■#■ &i:
'&^s-*/&h>s ■■■&■'■■
.;-jm*m*&m$
"'filft^
**\. 'whs
SKi*.
■ . ■,..;:-'-''^'-:?ft^.>'~"~.
%t~k*.
mmmm
i-.
^^^■S
%
f
■:C-:iB^?.-i.V"J^:^-'r
WW
: -tf;*rJ:-tfcr>x-
■^■-...jt^-r
J-** t.-.. sr". }$ h " ■ *.^*"
('■. :£,,„.■■ * *!--:
ifilij ■■■■P. -fA^itJft' ■■■ .-■^•SbHEW'-'.-.:
* 'iT-; ' Sjfc
sag^^m
'rSk
as*****
*
^
^m
-'**,'.
%
*►. i
'5- ,
**"":- .
•i*
.!>:
,**.:
•V;'
■:
fe:{
Hi,
-■->■$£&■
■j^::W$t
.."• '
%iij
En»s
f
'■ JiWi'^i
. ■.'iV,->.;.^
^. ^:>if>4
X** V
:V£>'° '.~*#fc*
&:lu£&&
iBMR r :
^■BR^'...
■■■«■ ":"
- ""i-""
■ "^y- /
-..- -. -tyf. .
- *r- *■*
:^
>'
Friedrich Hustedt
1886-1968
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
REIMER SIMONSEN
Atlas and Catalogue of the Diatom Types
of Friedrich Hustedt
Volume 1
Catalogue
J. CRAMER
in der Gebriider Borntraeger Verlagsbuchhandlung
BERLIN • STUTTGART 1987

u
v_ *"
A fcPf
Date of publication:
August 1987
-Vi -,' -1 2 ^
© 1987 by Gebriider Borntraeger, D-1000 Berlin - D-7000 Stuttgart
All rights reserved, including translation into foreign languages. This work, or parts
thereof, may nor be reproduced in any form without permission from the publishers.
Printed in Germany by Strauss offsetdruck gmbh, 6945 Hirschberg 2
(Vol. 1-3): ISBN 3-443-50007-2
(Vol. 1): ISBN 3-443-50008-0
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
ft
6P7*s
$* 4$r?*ze6*t^ty,*j£
This dedication, originally written in jest by the undersigned, is here respectfully
presented with admiration for the vast life-work of my teacher

-4 fcr- i
Date of publication:
August 1987
■:■: !''■> <i •
tw. [fc:;-.!OTHSK ■
* s t
V-
© 1987 by Gebruder Borntraeger, D-1000 Berlin ■ D-7000 Stuttgart
All rights reserved, including translation into foreign languages. This work, or parts
thereof, may not be reproduced in any form without permission from the publishers.
Printed in Germany by strauss offsetdruck gmbh, 6945 Hirschberg 2
(Vol 1-3): ISBN 3-443-50007-2
(Vol. 1): ISBN 3-443-50008-0
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
4
^7^
fi'l&m46*ty„yM£
-xv» _ ^v ^
This dedication, originally written in jest by the undersigned, is here respectfully
presented with admiration for the vast life-work of my teacher

SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
Contents
Volume 1
Foreword ix
The Hustedt Collection 1
Methods 4
Arrangement of this work 5
Detailed bibliography of Hustedt's publications 7
Catalogue of Hustedt's diatom types 17
Index 507
Addenda 523
Corrigenda 524
Volume 2
Atlas of Hustedt's diatom types. Plates 1—395, op 2—106
Volume 3
Atlas of Hustedt's diatom types. Plates 396—772, op 107—175

SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
Foreword
On 15 December 1986 Dr. Friedrich Hustedt would have been 100 years
old. The present work is intended as a tribute of his student to
commemorate this centennial.
Hustedt's biography has been made known mainly by K.E. Behre, sen.
(Abh. naturw. Verein Bremen 37, 97-108, 19^7; Revue Algologique, n.s.
9, 207-216, 1969; Nova Hedwigia, Beih. 31, xi-xxii, 1970), and nothing
needs to be added here.
Hustedt left behind a large scientific legacy. During his long life
he published and described the incredible number of 1942 new diatom taxa:
5 genera, 1448 species, 350 varieties, and 139 formae. The species number
comprises more than 12 % of that recognized as valid in the catalogue
of VanLandingham and thus of the diatoms known by 1968, the year of
Hustedt's decease. Aside from all his other merits and accomplishments,
it is beyond any doubt that Hustedt was a passionate describer of new
diatoms. A person in daily contact with his scientific products and
creations, whether they are his papers, books, or his slides, samples, or his
marvellous hand drawings, must realize that Friedrich Hustedt was the third
and last great pioneer of diatom research from the old school, behind
C.G. Ehrenberg (1795-1876) and F.T. KUtzing (1807-1893), and certainly
the leading diatomist of the current century. It is very fortunate that
his scientific belongings, among them the largest diatom slide collection
a private person ever owned, have become public property so that today
they are accessible to scientists.
The types of Hustedt's taxa are of primary interest to most guest
scientists who visit the Hustedt Collection today. Together with our
visitors- we have often spent days in search of many of these types, thus
losing precious time. This made me realize that we needed a catalogue
listing and locating all the types of Hustedt's taxa. At the same time
I decided that it would be best to publish an atlas with micrographs of
all types, sometimes including also a few parallel specimens to show
variability. Having fairly unique light microscopic equipment at my personal
disposal, the situation for producing such an atlas was optimal. One of
the reasons to publish micrographs is that Hustedt's illustrations are
largely line drawings or a few generally very poorly reproduced
photomicrographs. The drawing of a diatom must, of necessity, introduce a subjective
element, and it is also always an abstraction of reality. Nothing can
replace the impression of the microscopic image upon a person, and I am
certain that this impression can again be a subjective experience.
Notwithstanding, a micrograph does have many advantages over the drawing, provided
ix

X
that first-class equipment is used - which is here the case - and that
the final reproduction is optimal which today is much easier to accomplish
than twenty years ago.
The reader will easily recognize the advantages discussed above.
However, the draftsman does often have advantages over the photographer
in that he is able to bring an object from an oblique position into the
same plane, he can also omit all the dirt which sometimes obscures
structures or he can draw definite lines where there are only weak indications
of structures. Therefore the amount of information obtained from a drawing
can sometimes be greater than that obtained from a photograph, and the
specialist will know this. But also in these rather hopeless cases
micrographs were taken and are given here, because they show in turn how much
the original author can have seen and, sometimes, they demonstrate the
degree of "interpretation" applied by him.
Hustedt published more than 500 taxa in Schmidt's Atlas der Diatoma-
ceenkunde. By far the greatest part of these was never formally furnished
with a description or diagnosis. Although diatomists have always treated
these taxa as though they were valid, they represent formally nomina nuda
only. This is certainly an unsatisfying situation and therefore these taxa
are given here very short, sometimes ultrashort, diagnoses or descriptions
in order to formally validate them.
After this work is published, I expect a tide of inquiries flooding
my desk, asking for, e.g. "Slide Ral/73, plus finder," I shall have to
disappoint these colleagues. There has been much misuse of the collections
lately by treating them rather like mail order firms and expecting that
everything could be had just for the asking and the collection being
obliged to send everything. To send out diatom slides is always a hazard,
the slides may not only break, but the cover glasses can easily chip off
under the shocks of transportation, particularly when Hyrax is the
mountant. Therefore I wish to re-introduce the original state in which
the normal procedure is the visit of the scientist to the collection
and not vice versa.
Three persons have particularly contributed to the completion of this
atlas and catalogue. Friedel Hinz earned high merits with her dedication,
her diligence and patience in searching for the types of Hustedt, a work,
often frustrating, which took her almost six years. She did also all the
photographic processing and mounting of the plates. My sincerest thanks
are due to her. Mr Heinz Grube of Messrs. Carl Zeiss helped with hints
and advice and brought optical . equipment for trial which all greatly
contributed to improving and optimizing the micrograph quality. His service
and fast help in urgent cases are here gratefully acknowledged. I also
thank my wife Fraucken, who among other things not only tolerated, but
understandingly encouraged me to buy all the expensive instruments which
were necessary for an adequate and successful completion of this work.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
The Hustedt Collection
On 30 October 1963 the State of Bremen and Dr Friedrich Hustedt signed
a contract by which Hustedt's slide collection and library became property
of the State of Bremen. Hustedt was permitted to keep the slides and books
as long as he was able to work. The State of Bremen agreed not to separate
parts of the purchased objects and to establish a "Friedrich-Hustedt-
Arbeitsplatz" for the care of the library and the slide collection. This
"Friedrich-Hustedt-Arbeitsplatz fur Diatomeenkunde" was established on
1 July 1965 in the Institut fur Meeresforschung in Bremerhaven, with the
author as its curator. After Hustedt had deceased, on 1 April 1968, the
slides and books were transferred to Bremerhaven. Hustedt's collection
of about 17,000 diatom samples, not included in the contract, could also
be acquired so that the complete collection is now under the same roof.
Since 1968 the collection has been enlarged, partly by the author's
personal collection, by the purchase of the slide collection "Diatomees
du Monde entier" (1st edition) of Tempere & Peragallo, by the donation
of a collection of diatom samples of the Swiss mounter Eugene Mauler (1835-
1893), and finally by the deposition of many slides with types or type
material from colleagues from all over the world. Today the Hustedt
Collection in Bremerhaven has become one of the more important centres of diatom
research, with facilities for guest scientists. It received the acronym
BRM in Index Herbariorum. Since the Institut fur Meeresforschung was
dissolved at the end of 1985, the diatom collection has become part of the
Alfred-Wegener-Institut fur Polar- und Meeresforschung in Bremerhaven.
The slide collection comprised originally about 60,000 slides which
Hustedt had divided into two sections, the "Systematic Collection" with
some 15,000 slides and the "Geographic Collection" with about 45,000
slides. The Systematic Collection includes thousands of single mounts,
mostly mounted by Hustedt, and even more strewn slides arranged more or
less genus-wise in the older systematic order. The Geographic Collection
contains exclusively strewn slides with material from all parts of the
world, both freshwater and marine, Recent as well as fossil, in a very
rough geographic order. There are by no means sharp limits between the
two sections, many of the taxa treated in the present work are deposited
in the Geographic and not in the Systematic Collection. And, of course,
a strewn slide in a Navicula box can often contain marked specimens of
several other genera.
By far the greatest part of the slides was mounted by Hustedt himself.
In addition to these Hustedt was given many slides by amateurs and mounters
and also as deposits by professional scientists. Thus there are slides
mounted by B.J. Cholnoky, E. Debes, A. Elger, Fr. Fricke, H. Heiden,
G. Krasske, F. Meister, J.G. Moller, H. Reichelt, A. Schmidt, E. Thum.

2
Unfortunately Hustedt changed the original labels in several cases, putting
on the slides labels with his own name so that the original mounter cannot
be traced today.
Although Hustedt left behind hand-written catalogues, we started,
independently from these, at once with establishing new and more exhaustive
index card catalogues in order to make the collection accessible. For the
completion of this task, the better part of twelve years was needed, the
main though not quite full-time duty of one technician. We have now three
catalogues. The first and most important one is the systematic catalogue
listing all taxa named on slide labels or index sheets. This catalogue
currently comprises more than 4000 taxa belonging to some 250 genera. It
will be greatly increased after all of Hustedt1s taxa are included which
is presently not the case. The second catalogue lists all slides and
samples alphabetically, it is considerably larger than the systematic
catalogue. Then there is a third catalogue, of the same size as the
alphabetical one, in which the index cards of slides and samples are arranged
by Marsden square numbers, i.e. generally by 5° lat. x 5° long, squares
worldwide with Europe subdivided into squares of 0.5°• Particularly for
marine plankton this catalogue is very important, but also for other work
it is often practical to find out what we have from a particular area of
the world. The completion of these three catalogues was prerequisite for
the present work.
Hustedt had a peculiar and partly misleading system of numbering his
slides. Thus box no. 1 would contain slides no. 1-100, box 2 nos 101-200,
box 397 nos 39601-39700. To this we have added a new numbering by first
giving the box number and then the slide number, both separated by a slant
line (solidus, virgule): 397/42 instead of Hustedt's 39642 or N9/69 instead
of Hustedt's N869. The slide number with the slant line is our "official"
number, it is added in red ink and is thus easily recognizable from
Hustedt's original data which are always in black China ink. Hustedt's
own numbers are important in a very few cases, where he cited these numbers
for typification. These old numbers appear commonly and regularly on slides
of the Systematic Collection which has boxes numbered by letters instead
of numerals. In the Geographic Collection there are normally no original
numbers on the slide labels.
The types, as Hustedt left them behind, are in very different states.
Some types are nowhere marked, to say nothing of their name appearing
anywhere. It is, of course, these taxa that we had the greatest difficulties
with, and in several cases it took weeks of search before a type was
finally discovered, or the unsuccessful search brought to an end. It is
quite clear that a taxon like tx 11-4 Navicula digitoradiata var. elliptica
said in the protologue to be from the "Nordsee" cannot be found, unless
there are a few more indications on where to look for it. Such vague data
on localities are common throughout the Schmidt Atlas, and consequently
17 of the 27 taxa not found were published there. Other types are neither
marked nor named but are rather common on the slides and therefore not
posing any problems.
Fairly soon Hustedt started noting the coordinates of new and
interesting taxa in his records {often lying in the relevant boxes).
Unfortunately these coordinates are not regular mechanical stage values but are
of a system that has remained unknown to us so far. All attempts to solve
this problem have remained without success. None the less, the indication
of a particular taxon in the record sheet and its accordance with the
protologue were great aids in locating a type.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
3
Hustedt also took up the marking of diatom specimens on the slides.
At first he made - with the aid of a turntable - small lacquer circles
on the cover glasses, encircling the specimens to be marked after they
had been pre-marked by an ink-dot <cf. our Plate 1/4-6). Although the
circlets thus produced tend to be somewhat large, they have proved to be
of great help in finding several types. Unfortunately these circles wear
off by the time with the wiping off of immersion oil. Hustedt partly
anticipated this by re-circling the specimens with a diamond marker. Other
types are now fixed by our finder numbers. After about 1930 Hustedt used
a diamond marker, and slides made after this time posed far less problems
in finding the types. In very many cases Hustedt found fairly large numbers
of new or interesting taxa on the same strewn slide and therefore had to
draw many circles, in one case more than ninety. Then Hustedt would, with
the aid of a small projection microscope, map out all the circles on what
here is termed an "index sheet"; he would then give the individual circles
numbers and write down numbers and taxon names on the same sheet (cf. our
Plate 1/7-8). By far the greatest part of types is marked in this way by
using the diamond marker. Quite often the specimens are marked only and
nowhere named. Psychologically this is understandable, because the name-
giving is normally the last step in describing new taxa, and at that time
the slides are usually safely stowed away.
Since about 1922 Hustedt also took to making single mounts or mounts
with a few hand-picked specimens. For these slides he used cover glasses,
some of very small diameter, onto which discs of tin foil were glued. These
tin discs - Hustedt termed them "tin cells" - have larger or smaller holes
punched through their centres, and this the space were the picked specimen
is deposited. Some of these slides are illustrated on our Plate l/l-3.
The mounting method is described in great detail in op 69 and, less so,
in op 63. Hustedt did, to my knowledge, not mount "Typenplatten", i.e.
diatoms lined up in rows etc. but exclusively used these tin cells. The
mounts are often far from being fancy but are exclusively for scientific
purposes. Hustedt made thousands of these single mounts, many are still
in the boxes, unidentified, or at least without names.
One disadvantage of the single mount often becomes obvious under the
microscope. The diatom valve, partly sunk into the gelatine in order to
be fixed, is mounted in a mounting medium of considerably higher refractive
index, and the consequence of this is that the contact contour of silica-
gelatine-mountant will show more or less. To avoid stronger contact lines,
Hustedt always mounted his picked specimens in Styrax and not in higher
refracting media. These contact contours can give rise to
misinterpretation, e.g. Hustedt's illustration of tx 74-8 Triceratium sundbyense.
As for the typification, Hustedt very rarely cared to pinpoint
specimens as types, and in the rare instances where he did so, he often
demonstrated that he was not familiar with the modern type concept. Thus he
would not hesitate to term two specimens from two different localities
as "types", e.g. tx 167-2 Triceratium (Trigonium) vetustum. The word "type"
appears on no slide. In very many cases we have been able to identify the
illustrated specimen with a marked specimen on a slide. In these cases
typification is fairly easy. In other cases, and this may actually be the
greater part, the taxa had to be lectotypified. Although a type is,
ideally, a single specimen, the International Code of Botanical
Nomenclature permits for microscopic plants that a type can also consist of
more than one individual permanently preserved in one preparation
(Article 9-1). This has largely been taken as the rule in this work by
designating slides as types, normally with finder numbers leading to specimens.

4
An isotype in the present work is a specimen on another slide on which
the same material is mounted that was used for the type. As paratype is
considered a specimen on a slide with material from the same locality,
often from the same series of samples, but not the same material that
contains the type.
Methods
The micrographs were taken with two large research microscopes, one
being equipped for bright and darkfield illumination, the other exclusively
for Nomarski differential interference contrast (DIC). The photographic
objectives used with these two microscopes were all oil immersion
objectives: 16/0.5, 25/0.8, 40/1.0, and 63/1.4* No micrograph in this work was
taken with a dry system, nor was a lOOx objective ever used, the 63/1.4
being superior to these. In a few cases, when the cover slips were too
thick, an oil immersion 63/1.25 with long working distance (O.48 mm) was
applied. Both microscopes are furnished with achromatic-aplanatic con-
densors 1.4; the space between their front lenses and the slide was always
immersed. Oblique illumination was generated by a darkfield condensor
1.4/1.2. In addition to the filament lamps for visual observation, both
instruments are furnished with gas discharge lamps, mercury vapour lamps
HBO 200 W. The filters used were partly blue-green (Schott BG 18), partly
blue or violet glass (BG 12, BG 3) and later interference filters. The
cameras are automatic attachment cameras modified with objectives with
focal lengths of 160 mm, in accordance with the recommendations put forth
ealier by the author (Simonsen, J. Microscopy 119, 273-282, I98O). The
entire microscopic equipment is from Messrs. Carl Zeiss, Oberkochen, West
Germany.
As a rule brightfield illumination was used wherever possible. This
applies to "normal" slides with high-refracting mountants like Hyrax, Sirax
or Pleurax. Slides with the lower-refracting Styrax were routinely examined
with interference contrast, the disadvantage of the lower refractive index
being largely overcome by this method. Until 1929 and also later, after
the introduction of Hyrax, Hustedt mounted his slides in Styrax. Therefore
a great part of the types was photographed with DIC. The possibility of
applying the full condensor aperture (1.4) in DIC drastically minimizes
the depth of field. Therefore interference contrast was also used in cases
where valves lying on top of one another had to be separated optically,
e.g. in separating valves or thecal parts of Achnanthes, Cocconeis, Masto-
gloia etc. Oblique illumination with darkfield condensor and the objective
not stopped down was applied whenever maximum resolution was required.
The manipulation (and also sometimes the interpretation) is not quite easy
and needs experience, but, in addition to shortening the wavelength, it
is the only way to maximize the microscope resolution. In this way the
structure of an estimated 80 % of the taxa not resolved by Hustedt could
be photographed.
Hustedt's failure in resolving - on average - more than 38 striae in
10 urn was at first attributed to the inferior quality of his optical
equipment. Fortunately I own his older microscope that he used up to the fifties
and thus for the greatest part of his investigations. In an experiment
I screwed his 60 years old Seibert Apochromat 2mm/l.4 onto my microscope
and found that this objective performed beautifully, although the fluorite
lenses have become somewhat cloudy. Thus tx 126-28 Nitzschia paleaeformis,
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*':
5
which Hustedt said to have resolved in a few cases only, readily showed
its structure of about 38 striae in 10 urn in oblique illumination. In the
case of tx 126-35 Nitzschia vacua (= "the empty one") Hustedt reported
that he had been unable to resolve the striae, hence the name ("bisher
nicht aufgelbst; Hyraxpraparat, homog. Immersion 2 mm Apochr., num. Ap.
1.4"). With this very objective it is possible to resolve the structure
of about 40-42 striae in 10 urn, as our micrographs show. The elementary
mistake Hustedt made is that he never immersed his condensor; as a matter
of fact, the condensor of his microscope is not made for immersion. The
failure to immerse the condensor is a very common mistake among micro-
scopists. In addition, Hustedt did not know the proper application of a
' darkfield condensor. When I wanted to show him the advantage of this
accessory, about thirty years ago, he was not in the position to adjust
his darkfield condensor correctly. From these facts we may assume that
Hustedt could not discern striae numbering more than 38, at best 40 in
10 urn. This situation shows that particular attention should be paid
to the substage equipment and illumination in order to optimize the
microscope performance; only very little improvements can be made above the
stage. By trying to obtain the utmost performance we have been able in
a few favourable cases to resolve up to 56 striae in 10 urn. This is shown,
e.g. in a micrograph of tx 109-6 Navicula tenuicephala (Plate 457/13).
Our method of locating specimens on the slides, marked or unmarked,
is the finder method. Its main advantage for the use in larger collections
is that in most cases individual specimens can be pinpointed without having
to touch and to alter the slide by adding diamond-engraved markings or
the like. At the same time the change between microscopes is easy. The
finder used here is that made by Carl Zeiss, unfortunately no longer
produced. It is a glass slide with three larger squares A, B, C, each of which
is divided into 30x30 squares of 0.75x0.75 mm size numbered from 1-900;
these numbered squares are again subdivided into 3*3 squares. These
smallest squares were here given the numbers 1-9 which is preceded by a
point in our catalogue. If specimens were on the line separating two
squares, both subsquare numbers with a dash between are noted. Since all
specimens treated here are in the middle square B, this letter is never
mentioned in the catalogue.
Arrangement of this work
The arrangement of the catalogue and atlas is fairly simple. One of
the bases is the "Detailed bibliography of Hustedt's publications", the
following chapter of this introductory part. This is the most comprehensive
bibliography of Hustedt's works so far published. For our purpose it was
necessary to list every paper published by Hustedt in chronological order,
including contributions in papers of other scientists. This had to be
carried out very consequently and rather rigidly by listing every part
of a series or every instalment of his books as separate entry, according
to the year of publication. It is true that by doing this several of
Hustedt's larger works and his contributions in the Schmidt-Atlas had to
be taken apart, but the concept followed here left no better choice. Within
the same publication year no further chronological order was attempted,
the exact dates of publication not being known in most cases. As a rule
the serial publications like those in Schmidt's Atlas or instalments of
the "Kieselalgen" volumes in Rabenhorst's Kryptogamenflora are at the end

6
of the publications of the same year, being preceded by the shorter
contributions.
Each contribution was given a number, so to speak the "opus" number
of Hustedt's works. The complete bibliography lists 180 works (177 + 3
"A-numbers"). These numbered papers are here referred to as "op", e.g.
op 71 for the volume on freshwater diatoms in Pascher (1930).
The papers not containing new taxa are marked with an asterisk after
the publication year. In all other contributions the new taxa, and only
the new ones are here consecutively counted and numbered as they appear
in the text within one and the same paper. The number thus given to a new
taxon is preceded, separated by a dash, by the op number. The number
obtained in this way is the "tx" (from Taxon) number, e.g. tx 71-26 Navi-
cula pseudoscutiformis. The tx number is of great help in quickly and
simply finding the taxon in the catalogue without having to give the full
bibliography. The same applies to the op number.
The treatment of a taxon in the catalogue comprises the reference to
its original description, reference to the illustrations in the present
atlas, and reference to the types. This latter is particularly important,
because it enables the reader to judge the quality of a particular type.
There are no problems, of course, when a specimen, properly marked and
named, is identical with the specimen illustrated by Hustedt, it is the
holotype. Things become more complicated, when many specimens from as many
slides were illustrated by Hustedt. In these cases a lectotype is here
proposed, and normally the reader will be in the position to find the
reasons for my decision. Lectotypification had to be made in a very great
number of cases, perhaps in almost 50 %- I consider it important that this
was made by one and the same person throughout with constant criteria.
The taxa published in Schmidt's Atlas, which are generally without formal
description, are either provided with a reference to a description or
diagnosis given by Hustedt in another place or by other authors, or the
reference to the plate in the Schmidt-Atlas is followed by a validating
diagnosis or description which is generally very short.
Every slide is cited with its official number, a compound of either
a letter or a number, followed by a second number, separated by a virgule.
In a few cases Hustedt's old slide number is also included, when he had
given this number in the protologue. Then the text of the slide labels
is cited, but normally only the locality as written by Hustedt which
generally appears on the left label. Sometimes sample numbers are noted on the
right label (e.g. our Plate l/6: TJ7d), these are always included. As far
as possible the position of the types on the slides are here fixed by
finder grid numbers. This is always the case in marked specimens and often
also when the unmarked taxon is not frequent on the slide. In cases where
a specimen illustrated by Hustedt could be identified, this is indicated
by referring to this specimen as "i-type" (from iconotype) of Hustedt's
figure, the number of that - his - figure following.
It should be warned here against using the atlas alone as a picture
book. It is tempting, of course, to have these micrographs and to compare
them with what one has. However, I greatly urge using these micrographs
only in connection with the catalogue. One reason is that the names given
with the specimens in the atlas are Hustedt's original names, which for
several reasons may be synonyms of other names. The valid names appear
only in the catalogue and not in the legends of the plates. In addition
to this there are often important supplementary remarks in the catalogue.
For this reason the index at the end of this work leads only to the
catalogue and not to the plates which are referred to in the single catalogue
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
7
entries. It is also strongly recommended to use simultaneously the original
illustrations and descriptions, because some important details are
sometimes very difficult to photograph. This applies, e.g. to the direction
of the terminal raphe fissures which lie often on the slope between valve
face and mantle and thus out of focus of the otherwise important valve
face or within the darker fringe of stronger light refraction.
As was mentioned above, we were unable to locate 27 taxa. In these
cases no micrographs can be given, of course. These are here replaced by
copies of Hustedt*s illustrations, with the exception of tx 23-7 Pinnularia
appendiculata var. silesiaca and tx 73-3 Triceratium balearicum forma
quadrata of which no illustrations were given by Hustedt.
Detailed bibliography of Hustedt's publications
(Papers with an asterisk after the publication year do not contain new
diatom taxa)
1. 1908- - Beitrage zur Algenflora von Bremen. I. fiber den Bacillariaceen-
reichtum eines TUmpels der Umgebung von Bremen. Abh. Naturw. Ver.
Bremen 19, 353-358.
2. 1909 - Beitrage zur Algenflora von Bremen. II. Die Bacillariaceenvege-
tation des Torfkanals. Abh. Naturw. Ver. Bremen 19, 418-452.
3- 1909 - Beitrage zur Algenflora von Bremen. III. Bacillariaceen aus
der Ochtum. Abh. Naturw. Ver. Bremen 20, 91-120.
4. 1909"' - Anleitung zum Bestimmen der haufigsten Suftwasserdiatomeen fur
Anfanger. Mikrokosmos 1909, 87-91.
5. 1909" - Sufiwasser-Diatomeen Deutschlands. Ein Hilfsbuch fur Anfanger
bei der Bestimmung der am haufigsten vorkommenden Formen. Ed. 1 and 2.
Stuttgart: Franckh. 70 pp.
6. 1909" - Uber eine neue endophytisch lebende Dactylococcopsis-Art.
Hedwigia 48, 140-141.
7. 1910"- - Deutsche Salzwasser-Diatomeen. I. Mikrokosmos 4, 129-133.
8. 1910 - Beitrag zur Algenflora von Afrika. Bacillariales aus Dahome.
Arch. Hydrobiol. 5, 365-382.
9- 1911 - Beitrage zur Algenflora von Bremen. IV. Bacillariaceen aus der
Wumme. Abh. Naturw. Ver. Bremen 20, 257-315.
10. 1911- - Desmidiaceae et Bacillariaceae aus Tirol. I. Desmidiaceae.
Arch. Hydrobiol. 6, 307-346.
11. 1911 - A. Schmidts Atlas der Diatomaceenkunde, Heft 68, t 269-272.
Leipzig: Reisland.
11 A. 1911 - A. Schmidts Atlas der Diatomaceenkunde, Heft 69, t 273-276.
Leipzig: Reisland.
12. 1912 - Bericht uber einige Bacillariaceenproben des Achensees (Tirol).
Arch. Hydrobiol. 7, 693-700.
13. 1912 - A. Schmidts Atlas der Diatomaceenkunde, Heft 70, t. 277-280.
Leipzig: Reisland.
i
1
i
[

8
14. 1912 - A. Schmidts Atlas der Diatomaceenkunde, Heft 71, t 281-284.
Leipzig: Reisland.
15. 1913''- Deutsche Salzwasser-Diatomeen. II. Mikrokosmos 7, 180-186.
16. 1913*- Contributor (p. 263) in: A. Zahlbruckner, Schedae ad "Krypto-
gamas exsiccatas" editae a Museo Palatino Vindobonensi. Centuria 21.
Ann. K.K. Naturhist. Hofmus. Wien 27, 253-280.
17- 1913 - A. Schmidts Atlas der Diatomaceenkunde, Heft 72, t 285-288.
Leipzig: Reisland.
18. 1913 - A. Schmidts Atlas der Diatomaceenkunde, Heft 73, t 289-292.
Leipzig: Reisland.
19. 1913 - A. Schmidts Atlas der Diatomaceenkunde, Heft 74-75, t 293-300.
Leipzig: Reisland.
20. 1914"- Contributor (p. 129-130) in: A. Zahlbruckner, Schedae ad"Krypto-
gamas exsiccatas" editae a Museo Palatino Vindobonensi. Centuria 22.
Ann. K.K. Naturhist. Hofmus. Wien 28, 121-149-
21. 19i4K"— Deutsche Salzwasser-Diatomeen. III. Die Gattung Pleurosagma
W. Sm. Mikrokosmos 7, 286-289-
22. 1914*- Die Bacillariaceen-Gattung Tetracyclus. Abh. Naturw. Ver.
Bremen 23, 89-107.
23. 1914 - Bacillariales aus den Sudeten und einigen benachbarten Gebieten
des Odertales. Arch. Hydrobiol. 10, 1-128.
24. 1914"- Suftwasser-Diatomeen Deutschlands. Ein Hilfsbuch fiir Anfanger
bei der Bestimmung der am haufigsten vorkommenden Formen. Ed. 3-
Stuttgart: Franckh. 93 PP-
25. 1914 - A. Schmidts Atlas der Diatomaceenkunde, Heft 76, t 301-304.
Leipzig: Reisland.
26. 1914 - A. Schmidts Atlas der Diatomaceenkunde, Heft 77-78, t 305-312.
Leipzig: Reisland.
27. 1914 - A. Schmidts Atlas der Diatomaceenkunde, Heft 79, t 313-316.
Leipzig: Reisland.
28. 1920 - A. Schmidts Atlas der Diatomaceenkunde, Heft 80, t 317-320.
Leipzig: Reisland.
29- 1920 - A. Schmidts Atlas der Diatomaceenkunde, Heft 8l-82, t 321-328.
Leipzig: Reisland.
30. 1921*- Untersuchungen iiber die Natur der Harmattan-Trube. Deutsche
tiberseeische Meteorol. Beobacht. 1921, J1-J3-
31. 1921 - Bacillariales. In: B. Schroder (ed.), Zellpflanzen Ostafrikas,
gesammelt auf der Akademischen Studienfahrt 1910. Hedwigia 63, 117-173-
32. 1921 - A. Schmidts Atlas der Diatomaceenkunde, Heft 83, t 329-332.
Leipzig: Reisland.
33- 1921 - A. Schmidts Atlas der Diatomaceenkunde, Heft 84, t 333-336.
Leipzig: Reisland.
34* 1921 - A. Schmidts Atlas der Diatomaceenkunde, Heft 85, t 337-340.
Leipzig: Reisland.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*':
9
35. 1921 - A. Schmidts Atlas der Diatomaceenkunde, Heft 86, t 341-344.
Leipzig: Reisland.
36. 1922 - Bacillariales aus Innerasien, gesammelt von Sven Hedin. Jn:
S. Hedin (ed.), Southern Tibet 6 (3) Bot., 107-152. Stockholm.
37- 1922 - Die Bacillariaceen-Vegetation des Lunzer Seengebietes (Nieder-
Osterreich). Intern. Rev. ges. Hydrobiol. 10, 40-112,
38. 1922-;f- (jber rezente Diatomeen-Ablagerungen in Deutschland. Mikrobiol.
Monatshefte 12, 1-4.
39- 1922 - Bacillariales aus Schlesien. I. Ber. Deutsch. Bot. Ges. 40,
: 98-103.
40. 1922 - A. Schmidts Atlas der Diatomaceenkunde, Heft 87, t 345-348.
Leipzig: Reisland.
41. 1922 - A. Schmidts Atlas der Diatomaceenkunde, Heft 89, t 353-356.
Leipzig: Reisland.
42. 1923""- Vorlaufige Ergebnisse vergleichender Untersuchungen der
Bacillariaceen-Vegetation holsteinischer Seen. Verh. Internat. Verein. Limnol.
1, 98-107.
43* 1923"- Vom Sammeln und Praparieren der Kieselalgen. Schrift. freien
Ver. v. Freund. d. Mikrosk. 1, 1-15-
44- 1923""- Zur Morphologie und Auxosporenbildung von Melosira Jiirgensi
und M. arenaria. Arch, Hydrobiol. 14, 720-725.
45- 1923""- Suftwasser-Diatomeen Deutschlands. Ein Hilfsbuch fiir Anfanger
bei der Bestimmung der am haufigsten vorkommenden Formen. Ed- 4.
Stuttgart: Franckh. 77 PP-
46. 1924 - Die Bacillariaceen-Vegetation des Sarekgebirges. Naturwiss.
Lfnters. d. Sarekgeb. in Schwed.-Lappland 3 (Bot.), 525-626.
47. 1924 - A. Schmidts Atlas der Diatomaceenkunde, Heft 88, t 349-352.
Leipzig: Reisland.
48. 1925 - Bacillariales aus Schlesien. II. Intern. Rev. ges. Hydrobiol.
13, 337-349.
49. 1925 - Contribution ("Anliang", p. 317-341) in: H. Jarnefelt, Zur Limno-
logie einiger Gewasser Finnlands. Ann. Soc. Zool.-Bot. Fenn. Vanamo
2, 185-352.
50. 1925 - Bacillariales aus den Salzgewassern bei Oldesloe in Holstein.
Mitt. Geogr. Ges. u. Naturhist. Mus. Lubeck (ser. 2) 30, 84-120.
51. 1925 - Contribution (p. 41-43) in: G. Schonfeld, ein Torf- und Kiesel-
gurlager in den Seewiesen bei Dresden-Kaditz. Sitzungsber. Abh.
naturwiss. Ges. ISIS Dresden 1924, 40-44-
52. 1925 - A. Schmidts Atlas der Diatomaceenkunde, Heft 90, t 357-360.
Leipzig: Reisland.
53- 1925 - A, Schmidts Atlas der Diatomaceenkunde, Heft 91, t 361-364-
Leipzig: Reisland.
54- 1926 - Thalassiosira fluviatilis nov. spec, eine Wasserbliite im Weser-
gebiet. Ber. Deutsch. Bot. Ges. 43, 565-567-

10
55- 1926*- Zur Herstellung von Diatomeen-Einzelpraparaten. Mikrosk. f.
Naturfr. 4, 89-93-
56. 1926*- Untersuchungen iiber den Bau der Diatomeen. I. Raphe und Gallert-
poren der Eunotioideae. Ber. Deutsch. Bot. Ges. 44, 142-150.
57. 1926- Untersuchungen iiber den Bau der Diatomeen. II. Koloniebildung
bei der Cattung Pinnularia. III. Zur Anatomie der Triceratium-Membran.
Ber. Deutsch. Bot. Ges. 44, 394-402.
58. 1926*- Die europaischen Siifiwasserarten der Gattung Melosira. Verh.
Internat. Verein. Limnol. 3, 191-202.
59. 1927 - Die Diatomeen der interstadialen Seekreide. Contribution (p.
317-320) in: H. Gams, Die Geschichte der Lunzer Seen, Moore und Walder.
Intern. Rev. ges. Hydrobiol. 18, 305-387-
60. 1927 - Bacillariales aus dem Aokikosee in Japan. Arch. Hydrobiol.
18, 157-172.
6i. 1927»- Kritische Bemerkungen zu dem Aufsatz von Dr. H. Bethge: Melosira
und ihre Planktonbegleiter. Arch. Hydrobiol. 18, 173-179-
62. 1927 - Fossile Bacillariaceen aus dem Loa-Becken in der Atacama-Wuste,
Chile. Arch. Hydrobiol. 18, 224-251.
63. 1927 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil I, Lief. 1, 1-272. Leipzig: Akademische Verlags-
gesellschaft.
64. 1927 - A. Schmidts Atlas der Diatomaceenkunde, Heft 92, t 365-368.
Leipzig: Reisland.
65. 1928'»- Untersuchungen iiber den Bau der Diatomeen. IV. Zur Morphologie
und Systematik der Gattungen Denticula und Epithemia. V. Uber den
Bau der Raphe bei der Gattung Hantzschia. VI. Zur Kenntnis der Gattung
Cylindrotheca. Ber. Deutsch. Bot. Ges. 46, 148-I64.
66. 1928 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 1, Lief. 2, 273-464- Leipzig: Akademische
Verlagsgesellschaft.
67. 1929*- Untersuchungen uber den Bau der Diatomeen. VII. Weitere
Untersuchungen iiber die Kanalraphe der Nitzschioideae. VIII. Untersuchungen
iiber die Kanalraphe der Gattung Surirella. Ber. Deutsch. Bot. Ges.
47, 101-110.
68. 1929"- Untersuchungen iiber den Bau der Diatomeen. IX. Zur Morphologie
und Zellteilungsfolge von Eunotia didyma. Ber. Deutsch. Bot. Ges.
47, (59)-(69).
69. 1929"- Vom Sammeln und Praparieren der Kieselalgen sowie Angaben iiber
Untersuchungs- und Kulturmethoden. In: Abderhalden, Handbuch der biolo-
gischen Arbeitsmethoden, Abt. 11, Teil 4, 1-99-
70. 1929-- Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 1, Lief. 3, 465-608. Leipzig: Akademische
Verlagsgesellschaf t .
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
u
71. 1930 - Bacillariophyta (Diatomeae). In: A. Pascher Sufiwasserflora
Mitteleuropas, Heft 10, 466 pp. Jena: Fischer.
72. 1930"- Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 1, Lief. 4, 609-784- Leipzig: Akademische
Verlagsgesellschaft.
73- 1930 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 1, Lief. 5, 785-920. Leipzig: Akademische
Verlagsgesellschaft.
74. 1930 - A. Schmidts Atlas der Diatomaceenkunde, Heft 93, t 369-372.
Leipzig: Reisland.
75- 1931 - Diatomeen aus dem Feforvatn in Norwegen. Arch. Hydrobiol.
22, 537-545-
76. 1931 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 2, Lief. 1, 1-176. Leipzig: Akademische
Verlagsgesellschaf t .
77- 1931 - A. Schmidts Atlas der Diatomaceenkunde, Heft 94, t 373-376.
Leipzig: Reisland.
78. 1932 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 2, Lief. 2, 177-320. Leipzig: Akademische
Verlagsgesellschaft.
79- 1933 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 2, Lief. 3, 321-432. Leipzig: Akademische
Verlagsgesellschaft.
80. 1933 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 2, Lief. 4, 433-576. Leipzig: Akademische
Verlagsgesellschaft.
81. 1933 - A. Schmidts Atlas der Diatomaceenkunde, Heft 96, t 38I-384.
Leipzig: Reisland.
82. 1934 - Die Diatomeenflora von Poggenpohls Moor bei Dotlingen in
Oldenburg. Abh. u. Vortr. Bremer Wissensch. Ges. 8/9, 362-403.
83* 1934 - A. Schmidts Atlas der Diatomaceenkunde, Heft 97-98, t 385-392.
Leipzig: Reisland.
84. 1934 - A. Schmidts Atlas der Diatomaceenkunde, Heft 99-100, t 393-400.
Leipzig: Reisland.
85- 1935 - Untersuchungen iiber den Bau der Diatomeen. X. Die sogenannten
"Langslinien" in der Schalenstruktur pennater Diatomeen. XI. Struktur-
typen in der Gattung Diploneis. Ber. Deutsch. Dot. Ges. 53, 3-41.
86. 1935*- Untersuchungen uber den Bau der Diatomeen. XII. Raphe und Zell-
wand der Frustulia-artigen Naviculaceen. Ber. Deutsch. Bot. Ges.
53, 246-264.

12
87- 1935 - Die fossile Diatomeenflora in den Ablagerungen des Tobasees
auf Sumatra. Arch. Hydrobiol., Suppl. 14, 143-192.
87A. 1935 - Contributor (p. 73 and plate 8) in: 0. Wetzel, Die Mikropalae-
ontologie des Heiligenhafener Kieseltones (Ober-Eozan). Jahresber.
Niedersachs. geol. Vereins zu Hannover 27, 41-75-
88. 1936 - Contribution (p. 167-168) in: G. Huber-Pestalozzi, Phytoplankton
aus Seen und Sumpfen Javas, gesammelt von Prof. Schroter-Ziirich. Ber.
Schweiz. Bot. Ges. 46, 131-168.
89. 1936 - A. Schmidts Atlas der Diatomaceenkunde, Heft 101-102, t 401-408.
Leipzig: Reisland.
90. 1937 - Suftwasser-Diatomeen von Island, Spitzbergen und den Farber-
Inseln. Bot. Arch. 38, 152-207-
91 . 1937;'~ Zur Systematik der Diatomeen. I. Diatomeenvariationen und die
Moglichkeiten ihrer Benennung. Ber. Deutsch. Bot. Ges. 55, 185-193-
92. 1937*- Zur Systematik der Diatomeen. II. Der Begriff des "Typus" bei
den Diatomeen und der Umfang der Diagnosen. III. Konvergenzerschei-
nungen und Kummerformen. Ber. Deutsch. Bot. Ges. 55, 465-472.
93- 1937 - Systematische und okologische Untersuchungen iiber die
Diatomeenflora von Java, Bali und Sumatra nach dem Material der Deutschen Limno-
logischen Sunda-Expedition. Teil I. Systematischer Teil. Arch. Hydro-
biol., vSuppl. 15, 131-177.
94. 1937 - Systematische und okologische Untersuchungen iiber die
Diatomeenflora von Java, Bali und Sumatra nach dem Material der Deutschen Limno-
logischen Sunda-Expedition. Teil I. Systematischer Teil, Fortsetzung.
Arch. Hydrobiol., Suppl. 15, 187-295-
95- 1937 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 2, Lief. 5, 577-736. Leipzig: Akademische
Verlagsgesellschaft.
96. 1937 - A. Schmidts Atlas der Diatomaceenkunde, Heft 103, t 409-412.
Leipzig: Reisland.
97. 1937 _ a. Schmidts Atlas der Diatomaceenkunde, Heft 104, t 413-416.
Leipzig: Reisland.
98. 1938 - Systematische und okologische Untersuchungen iiber die
Diatomeenflora von Java, Bali und Sumatra nach dem Material der Deutschen Limno-
logischen Sunda-Expedition. Teil I. Systematischer Teil, SchlufJ.
Arch. Hydrobiol., Suppl. 15, 393-506.
99. 1938"- Systematische und okologische Untersuchungen iiber die
Diatomeenflora von Java, Bali und Sumatra nach dem Material der Deutschen Limno-
logischen Sunda-Expedition. Teil II. Allgemeiner Teil. Arch.
Hydrobiol., Suppl. 15, 638-790.
100. 1938'»- Systematische und okologische Untersuchungen iiber die
Diatomeenflora von Java, Bali und Sumatra nach dem Material der Deutschen Limno-
logischen Sunda-Expedition. Teil II. Allgemeiner Teil, Fortsetzung.
Arch, Hydrobiol., Suppl. 16, 1-155-
101. 1939 - Diatomeen aus den Pyrenaen. Ber. Deutsch. Bot. Ges. 56, 543-
572.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
13
102. 1939 - Die Diatomeenflora des Kiistengebietes der Nordsee vom Dollart
bis zur Elbmiindung. I. Die Diatomeenflora in den Sediment en der
unteren Ems sowie auf den Watten der Leybucht, des Memmert und bei
der Insel Juist. Abh. Naturw. Ver. Bremen 31, 572-677.
103- 1939"- Systematische und okologische Untersuchungen iiber die
Diatomeenflora von Java, Bali und Sumatra nach dem Material der Deutschen
Limnologischen Sunda-Expedition. Teil II. Allgemeiner Teil, Schlufi.
Arch. Hydrobiol., Suppl. 16, 274-394.
104- 1940 - A. Schmidts Atlas der Diatomaceenkunde, Heft 109-112, t 433-
448. Leipzig: Reisland.
105. 1941*- Botanische Mikrophotographie mit der Leica. In* H. Stockier,
Die Leica in Beruf und Wissenschaft. Frankfurt a.M.: Breidenstein
195-215.
106. 1941 - Contributions (p. 272 and 274) in: G. Krasske, Die Kieselalgen
des chilenischen Kiistenplanktons. Arch. Hydrobiol. 38, 260-287.
107. 1942 - Aerophile Diatomeen in der nordwestdeutschen Flora. Ber.
Deutsch. Bot. Ges. 60, 55-73.
108. 1942 - Sufiwasserdiatomeen des indomalayischen Archipels und der
Hawaii-Inseln, Intern. Rev. ges. Hydrobiol. 42, 1-252.
109- 1942 - Diatomeen aus der Umgebung von Abisko in Schwedisch-Lappland.
Arch. Hydrobiol. 39, 82-174.
110. 1942 - Beitrage zur Algenflora von Bremen. V. Die Diatomeenflora
einiger Sumpfwiesen bei Bremen, Abh. Naturw. Ver. Bremen 32, 184-221.
111. 1942 - Various contributions in: G. Huber-Pestalozzi, Das
Phytoplankton des Siifiwassers, 2. Teil, 2. Halfte, Diatomeen. Die Binnen-
gewasser 16, 2 (2), 367-549- Stuttgart: Schweizerbart.
112. 1943 - Die Diatomeenflora einiger Hochgebirgsseen der Landschaft Davos
in den Schweizer Alpen. Intern. Rev. ges. Hydrobiol. 43, 124-197.
113- 1943 - Die Diatomeenflora einiger Hochgebirgsseen der Landschaft Davos
in den Schweizer Alpen. Fortsetzung, Intern. Rev. ges. Hydrobiol.
43, 225-280.
114. 1944 - Neue und wenig bekannte Diatomeen. I. Ber. Deutsch. Bot, Ges.
61, 271-290,
115. 1944 - A. Schmidts Atlas der Diatomaceenkunde, Heft 95, t 377-380.
Leipzig: Reisland.
116. 1944 - A. Schmidts Atlas der Diatomaceenkunde, Heft 113-115, t 449-
460. Leipzig: Reisland.
117. 1945 - Diatomeen aus Seen und Quellgebieten der Balkanhalbinsel.
Arch. "Hydrobiol. 40, 867-973.
118. 1945*- Die Struktur der Diatomeen und die Bedeutung des Elektronen-
mikroskopes fiir ihre Analyse. Arch. Hydrobiol. 41, 315-332.
119- 1945";;- Die Diatomeenflora norddeutscher Seen mit besonderer Beriick-
sichtigung des holsteinischen Seengebietes. I-IV. Seen in Posen, der
Neumark, Pommern und der Mark Brandenburg. Arch. Hydrobiol. 41,
392-4U.

H
120. 1948 - Die Diatomeenflora des Beckens. In: A. Thienemann, Die Tierwelt
eines astatischen Wasserbeckens in vier aufeinanderfolgenden Jahren.
Schweiz. Zeitschr. f Hydrol. 11, 41-48.
121 . 1948 - Die Diatomeenflora diluvialer Sedimente bei dem Dorfe Gaj bei
Konin im Warthegebiet. Schweiz. Zeitschr. f. Hydrol. 11, 181-209-
122. 1949 - Suftwasser-Diatomeen aus dem Albert-Nationalpark in Belgisch
Kongo. Expl. Pare Natl. Albert. Mission Damas (1935-1936) 8, 1-199-
123. 1949«- Das Studium der Testdiatomeen als Einfiihrung in die mikro-
skopische Praxis. Mikrokosmos 38, 265-269-
124. 1949 - Diatomeen von der Sinai-Halbinsel und aus dem Libanongebiet.
Hydrobiologia 2, 24-55-
125. 1949 - Contribution (p. 439-443) in: I. Brendemiihl, Uber die Verbrei-
tung der Erddiatomeen. Arch. f. Mikrobiol. 14, 407-449*
125A. 1949 - Contribution (p. 8l) in: G. Krasske, Subfossile Diatomeen
aus den Mooren Patagoniens und Feuerlands. Ann. Acad. Sci. Fenn.,
Ser. A, IV, 14, 1-95-
126. 1950 - Die Diatomeenflora norddeutscher Seen mit besonderer Beriick-
sichtigung des holsteinischen Seengebietes. V-VII. Seen in
Mecklenburg, Lauenburg und Nordostdeutschland. Arch. Hydrobiol. 43, 329-458.
.127. 1950*- Eozane Diatomeen. Mikrokosmos 40, 66-71.
128. 1951""- Uber das Zeichnen von Diatomeen. Mikrokosmos 40, 123-126.
129. 1951 - A.A. Aleem & F. Hustedt, Einige neue Diatomeen von der Sudkuste
Englands. Bot. Notiser 1951, 1-20.
130. 1951 - F. Hustedt & A.A. Aleem, Littoral diatoms from the Salstone,
near Plymouth. J. Mar. Biol. Assoc. U.K. 30, 177-196.
131. 1952 - Neue und wenig bekannte Diatomeen. II. Ber. Deutsch. Bot.
Ges. 64. 305-315.
132. 1952 - Diatomeen aus der Lebensgemeinschaft des Buckelwals (Megaptera
nodosa Bonn.). Arch. Hydrobiol. 46, 286-298.
133. 1952;;- Georg Krasske zum Gedachtnis. Arch. Hydrobiol. 46, 617-622.
134- 1952 - Neue und wenig bekannte Diatomeen, III. Ber, Deutsch. Bot.
Ges. 65, 133-144-
135. 1952 - Neue und wenig bekannte Diatomeen. IV. Bot. Notiser 1952,
366-410.
136. 1952 - Neue und wenig bekannte Diatomeen. V. Ber. Deutsch. Bot.
Ges. 65, 272-276.
137. 1952;;- Die Struktur der Diatomeen und die Bedeutung des Elektronen-
mikroskopes fur ihre Analyse. II. Arch. Hydrobiol. 47, 295-301.
138. 1953"- Algunas observaciones sobre la vida de microorganismos en los
arroyos terminales de los Ausoles de El Salvador. Com. Inst. trop.
Invest. Cient. San Salvador 2, 103-108.
139. 1953 - La flora de Diatomeas en paredones sobrehumicidos en El
Salvador. Com. Inst. trop. Invest. Cient. San Salvador 2, 129-138.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweJ:
15
140. 1953 - Diatomeen aus dem Naturschutzpark Seeon. Arch. Hydrobiol. 47
625-635.
141. 1953 - Diatomeen aus der Oase Gafsa in Siidtunesien. Arch. Hydrobiol.
48, 145-153-
142. 1953:;- Die Systematik der Diatomeen in ihren Beziehungen zur Geologie
und Okologie nebst einer Revision des Halobiensystems. Svensk. Bot.
Tidskr. 47, 509-519.
143- 1953'"- Parallelismus in der Strukturentwicklung verwandter Diatomeen-
gattungen und seine Bedeutung fur die Systematik. Proc. 7th Intern.
Bot, Congr. Stockholm 1950, 839-840.
144- 1954*- Uber das Zeichnen von Diatomeen. II. Mikrokcfsmos 42, 87-90.
145- 1954 - Die Diatomeenflora der Eifelmaare. Arch. Hydrobiol.48, 451-496.
146. 1954 - Die Diatomeenflora von Oberohe in der Llineburger Heide. Abh.
Naturw. Ver. Bremen 33, 431-455.
147- 1954 - Neue und wenig bekannte Diatomeen. VI. Ber. Deutsch. Bot.
Ges. 67, 269-280.
148. 1955 - Marine littoral diatoms from Beaufort, North Carolina. Bull.
Duke Univ. Marine Station 6, 1-67.
149. 1955*- Dr. h.c. Fritz Meister zum Gedachtnis. Arch. Hydrobiol. 50,
291-297.
150. 1955 - Zellteilungsfolge und Variability bei Diatomeen. Arch.
Mikrobiol. 21, 391-400.
151. 1955*- Okologie in Zirkelschliissen. Arch. Hydrobiol. 51, 145-152.
152. 1955 - Neue und wenig bekannte Diatomeen. VII. Ber. Deutsch. Bot.
Ges. 68, 121-132.
153- 1955 - Neue und wenig bekannte Diatomeen. 8. Abh. Naturw. Ver. Bremen
34, 47-68.
i54. 1955*- Die grundsatzliche Struktur der Diatomeen-Membran und die
taxonomische Auswertung elektronenmikroskopischer Diatomeenaufnahmen.
Bot. Notiser 108, 446-460.
155. 1956 - Diatomeen aus dem Lago de Maracaibo in Venezuela. Ergebn.
deutsch. limnol. Venezuela-Exped. 1952, 1, 93-140. Berlin: Deutscher
Verlag der Wissenschaften.
156. 1956*- Kieselalgen (Diatomeen). Einfiihrung in die Kleinlebewelt.
Ed. I. Stuttgart: Franckh. 70 pp,
157. 1957 - Die Diatomeenflora des FluGsystems der Weser im Gebiet der
Hansestadt Bremen. Abh. Naturw. Ver. Bremen 34, 181-440.
158. 1958 - Phylogenetische Untersuchungen an Diatomeen. Osterr. Bot.
Zeitschr. 105, 193-211.
159. 1958 - Diatomeen aus der Antarktis und dem Sudatlantik. Deutsche
Antarkt. Exped. 1938/39, Wiss. Ergebn. 2 (3), 103-191.
160. 1958"- Preparation und Untersuchungsmethoden fossiler Diatomeen. In:
H. Freund (ed.), Handbuch der Mikroskopie in der Technik 2 (3),
425-450. Frankfurt a.M.: Umschau-Verlag.

16
161. 1958 - A. Schmidts Atlas der Diatomaceenkunde, Heft 105 and 116,
t 417-420 and 46I-464. Berlin: Akademie-Verlag. (These two "Hefte"
with the rather inconsecutive numbers actually appeared under one
and the same cover)
162. 1959 - Die Diatomeenflora der Unterweser von der Lesummundung bis
Bremerhaven mit Berucksichtigung des Unterlaufs der Hunte und Geeste.
Veroff. Inst. Meeresforsch. Bremerhaven 6, 13-176.
163- 1959 - Die Diatomeenflora des Salzlackengebietes im osterreichischen
Burgenland. Sitzungsber. Osterr. Akad. Wiss., Math.-nat. Kl., Abt.I,
168, 387-452.
164. 1959 - Die Diatomeenflora des Neusiedler Sees im bsterreichischen
Burgenland. Osterr. Bot. Zeitschr. 106, 390-430.
165. 1959'"- Bemerkungen uber die Diatomeenflora des Neusiedler Sees und
des Salzlackengebietes. Wiss. Arb. a.d. Burgenland, H. 23, "Landschaft
Neusiedlersee", 129-133.
166. 1959 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz,
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 2, Lief. 6, 737-845* Leipzig: Akademische
Verlagsgesellschaft.
167. 1959 - A. Schmidts Atlas der Diatomaceenkunde, Heft 117-118, t 465-
-472. Berlin: Akademie-Verlag.
168. 1959 - A. Schmidts Atlas der Diatomaceenkunde, Heft 119-120, t 473-
-480. Berlin: Akademie-Verlag.
169. 196T"- Kieselalgen (Diatomeen). Einfiihrung in die Kleinlebewelt.
Ed. 2. Stuttgart: Franckh. 70 pp.
170. 1961 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 3* Lief. 1, 1-160. Leipzig: Akademische
Verlagsgesellschaft.
171. 1962 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 3> Lief. 2, 161-348. Leipzig: Akademische
Verlagsgesellschaft.
172. 1964 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 3, Lief. 3, 349-556. Leipzig: Akademische
Verlagsgesellschaft.
173. 1965 - Neue und wenig bekannte Diatomeen. IX. Int. Rev. ges. Hydro-
biol. 50, 391-410.
174. 1965"""- Kieselalgen (Diatomeen). Einfiihrung in die Kleinlebewelt.
Ed. 3- Stuttgart: Franckh. 70 pp.
175. 1966 - Die Kieselalgen Deutschlands, Osterreichs und der Schweiz.
Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und
der Schweiz, Band 7, Teil 3, Lief. 4, 557-816. Leipzig: Akademische
Verlagsgesellschaft.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
17
176. 1967«~ Der ultramikroskopische Bau der Zellwand in Beziehung zur
Systematik der Diatomeen. Ber. Deutsch. Bot. Ges. 79, 445-452.
177. 1967*- Zellteilungsmodus und Formwechsel bei Diatomeen. Nova Hedwieia
13. 397-401.
Catalogue of Hustedt's diatom types
Abbreviations used in this catalogue:
f = figure
finder = number(s) of finder square(s) indicating specimen
positions) on a slide
i-type = iconotype, i.e. the specimen illustrated by Hustedt with
his figure number normally following
N,B. = (nota bene) indicating important taxonomic, morphologic,
or nomenclatural remarks at the end of a taxon treatment
op = opus with number applying to those in the Detailed
Bibliography (p 7-17)
P = page
t = plate (tabula)
tx = taxon with number applying to those in this catalogue
Op 2. Beitrage zur Algenflora von Bremen. II. Die Bacillariaceenvegetation
des Torfkanals. Abh. Naturw. Ver. Bremen 19, 418-452, 1909.
2-1 Navicula phoenicenteron var. irregularis Hustedt Plate 2/1
Op 2, p 441, f 7.
Since no marked or named specimen exists, the following is here selected
as lectotype:
213/15- Bremen. Torfkanal. 2.4.08.
Finder: 343-4
N.B. At finder position 162.4-5 of the same slide there is another
specimen having one valve with two isolated striae on one side of the
stauros, whereas the other valve has no striae in the stauros.
In op 166, p 767, Hustedt synonymizes this taxon with and includes
it in the species, Stauroneis phoenicenteron (Nitzsch) Ehrenberg.

18
Op. 3. Beitrage zur Algenflora von Bremen. III. Bacillariaceen aus der
Ochtum. Abh. Naturw. Ver. Bremen 20, 91-120, 1909-
3-1 Eunotia major var. curta Hustedt Plate 2/2
Op 3, p 100 (no illustration).
The following specimen of this nowhere marked or named taxon may be what
Hustedt had before himself and is therefore taken as lectotype:
212/28. Ochtum, Grund. 1908.
Finder: 379-9
N.B. In op 78, p 306, Hustedt includes this taxon in Eun. monodon
var. major (W. Smith) Hustedt.
3-2 Eunotia formica var. elongata Hustedt Plate 2/3-4
Op 3, p 101, f 3.
The taxon is nowhere marked or named, and we have not found the iconotype.
As lectotype is therefore chosen:
Ah/49- Ochtum bei Bremen, 1907. PI-
Finder: 413-8
N.B. In op 78, p 308, Hustedt includes this taxon in E. formica Ehrenb.
3-3 Caloneis silicula var. tumida Hustedt Plate 2/5-6
Op 3, p 103, f 9.
A specimen of this nowhere marked or named taxon, perhaps the i-type,
was found on the following slide which is here proposed as lectotype:
212/40. Ochtum. Grund. 1909-
Finder: 432.5-6.
3-4 Surirella splendida var. punctata Hustedt Plates 2/7, 3/l
Op 3, P 114, f 14.
The taxon was not marked by Hustedt, nor does its name appear on slides
or in records. Therefore the following slide is here taken as lectotype
Ah/49- Ochtum bei Bremen, 1907. PI.
Finder: 316.7; 344-4; 373.1
N.B. In op 9, p 312, Hustedt introduces the new combination Surirella
robusta forma punctata (Hustedt) Hustedt. Later, in op 157, P 36l, Hustedt
reinstates the original combination, but now as forma.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler.
19
0p 8. Beitrag zur Algenflora von Afrika. Bacillariales aus Dahome. Arch.
Hydrobiol. 5, 365-382, 1910.
8-1 Caloneis incognita Hustedt Plate 3/2-5
Op 8, p 373, f 7-
Holotype:
Nb2/5. Porto Novo.
, Marked specimens named on label.
* Finder: 343-2-3 (i-type); 462.2; 613-6
8-2 Navicula microstauron var. biundulata forma major Hustedt Plate 3/4-5
OP 8, p 374, f 3-
No specimen is marked, nor is the taxon named anywhere. In addition, the
dimensions given by Hustedt do not agree with his illustration. As
lectotype is therefore proposed:
Nb2/5. Porto Novo.
Finder: 560.5; 616.3
8-3 Navicula africana Hustedt Plate 3/2-3
0p 8, p 377, f 12.
Holotype:
Nll/81. Dahome. Porto Novo.
Marked specimens named on label.
Finder: 441.8-9; 526.7
N.B. In op 170, p 97, Hustedt synonymizes this taxon with and includes
it in Nav. hoefleri Cholnoky, because of Nav. africana Ehrenb. and Nav.
africana Petit.
8-4 Stauroneis dahomensis Hustedt Plate 3/5-6
Op 8, p 378, f 11.
Holotype:
Na2/66. Porto Novo.
Marked specimen named on label.
Finder: 311.2-5
Op 9. Beitrage zur Algenflora von Bremen. IV. Bacillariaceen aus der Wumme.
Abh. Naturw. Ver. Bremen 20, 257-315, 1911.

20
9-1 Achnanthes lanceolata var. rostrata Hustedt Plate 4/6-7
Op 9, p 279, t 3/34
Though not the iconotype, there is a marked, unnamed specimen which is
here selected as lectotype:
212/73. An Hypnum bei Borgfeld. 1910.
Finder: 584-4
9-2 Caloneis schumanniana var. linearis Hustedt Plate 4/1-2
Op 9, p 282, t 2/22.
No specimen being marked or named, the following is selected as lectotype:
212/68. Wumme, Borgfeld, an Hypnum. 1910.
Finder: 464-3
Isolectotype:
212/69. Borgfeld, an Hypnum. 1910.
Finder: 377-5-6 (i-type?)
9-3 Navicula tuscula var. rostrata Hustedt Plate 4/3
Op 9, p 287, t 3/22.
No marked or named specimen exists. Among the slides with material from
the type locality the following is chosen as lectotype, the specimen
perhaps representing the i-type:
212/69. Borgfeld, an Hypnum. 1910.
Finder: 321.4
9-4 Navicula placentula var. apiculata Hustedt Plate 4/4-5
Op 9, p 288, t 2/7-
The following specimen, unmarked and unnamed, represents perhaps the
i-type and is therefore taken as lectotype:
212/71. Borgfeld, an Hypnum. 1910.
Finder: 462.8
N.B. In op 71, p 304, Hustedt includes this taxon in Navicula
placentula forma latiuscula (Grunow) Meister.
9-5 Navicula lemmermannii Hustedt Plate 4/8-9
Op 9, p 288, t 2/2.
A specimen of this taxon is marked, but not named, on a slide from the
locality cited in the protologue. Since it is not the i-type, it is here
proposed as lectotype:
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
21
212/73. An Hypnum bei Borgfeld. 1910.
Finder: 316.4
N.B. In op 175, p 747, Hustedt synonymizes this taxon with and includes
it in Nav. lacustris Gregory.
9-6 Navicula integra var. truncata Hustedt Plate S/l-2
Op 9, p 289, t 2/29.
( Holotype:
* 212/60. Wumme, Burgdamm. Holz mit Hypnum.
Unmarked, unnamed specimen
Finder: 286.5
N.B. in op 171, p 315, Hustedt includes this taxon in Nav. integra
(W. Smith) Ralfs, because he considered his taxon as "Kummerform" or
"elliptische Kleinstform", product of the cell division mode.
9-7 Navicula pupula var. elliptica Hustedt Plate 5/3-4
Op 9, P 291, t 3/40.
In the absence of marked or named specimens the following is designated
here as lectotype:
212/76. Oberneuland, Wumme.
Finder: 346;2-5
9-8 Navicula pupula var. rostrata Hustedt Plate 5/5-7
Op 9, p 291, t 3/39.
No specimen being marked or named, the following slide is selected as
lectotype:
212/76. Oberneuland, Wumme.
Specimens were found, e.g. at finder positions 342.3; 373.8; 530.7.
9-9 Navicula pupula var. subcapitata Hustedt Plate 5/8
Op 9, P 291, t 3/38, 41-
This taxon, which is nowhere marked or named, is not uncommon on the
following slide which may serve as lectotype:
212/76. Oberneuland, Wumme.
N.B. In op 71, p 281, Hustedt includes this taxon in the species.
9-10 Cymbella minutissima Hustedt Plate 5/9
0p 9, p 295, f 7.

22
A specimen of this nowhere marked taxon, which is identical with Cymbella
sinuata Gregory, was found on the following slide which is therefore taken
as lectotype:
212/76. Oberneuland, Wumme.
Finder: 283.8
(9-11 Surirella biseriata var. constricta Hustedt)
Op 9, P 304, t 2/9.
In op 14, t 283/I, Hustedt makes the new combination "Surirella biseriata
var. constricta Grun.", "Herausgegeben in der Phykotheka universalis unter
dem Namen S. biseriata var. maxima forma constricta." Therefore the
combination S. biseriata var. constricta does not go back to a taxon described
or validated by Hustedt as is stated by VanLandingham (Catalogue 7, p 3870,
1978). It can therefore not be treated here.
9-12 Surirella linearis var, constricta forma lata Hustedt Plate 5/lO-H
Op 9, P 310, t 3/20.
No marked specimen exists of this taxon. As lectotype is therefore proposed
212/71. Borgfeld, an Hypnum. 1910.
Finder: 222.7] 466.1-4
9-13 Surirella tenera var. subconstricta Hustedt Plate 5/12-13
OP 9, p 312, t 2/6.
In the absence of a marked specimen the following slide is selected as
lectotype:
212/74. Kleine Wumme. 1910.
The taxon is not rare; our specimen was found at finder position 402.6.
Op 11. A. Schmidts Atlas der Diatomaceenkunde, Heft 68, t 269-272, 1911.
11-1 Tetracyclus lacustris var. rhombicus Hustedt Plate 6/l-3
Op 11, t 269/4-5.
Description in op 22, p 97; see also op 71, p 121.
The taxon is nowhere marked or named. It is fairly frequent on the
following slide which is therefore proposed as lectotype:
175/7. Diatomaceenerde von Oasjo. Jemshoy. Schweden.
A slide mounted by E. Thum.
N.B. In op 76, p 14, Hustedt includes this taxon in T. lacustris var.
strumosa (Ehrenb.) Hustedt.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler. ru
23
11-2 Tetracyclus lacustris var. capitatus Hustedt Plate 6/5-7
Op 11, t 269/6.
Description in op 22, p 96; see also op 76, p 14.
The depicted fragment could not be located, nor is this taxon recorded
in Hustedt's catalogues or marked. As lectotype is here taken:
175/7. Diatomaceenerde von Oasjo. Jemshoy. Schweden.
There are several specimens on this Thum slide.
I 11-3 Tetracyclus lacustris var. elongatus Hustedt Plate 6/4
Op 11, t 269/7-8.
Description in op 22, p 97; see also op 71, p 121 and op 76, p 14.
This taxon is not marked or named by the author. It occurs, though rather
rarely, on the following slide mounted by E. Thum which is here adopted
as lectotype:
175/7. Diatomaceenerde von Oasjo. Jemshoy. Schweden.
Specimens are at finder positions 466.5-8 and 556.9.
11-4 Navicula digitoradiata var. elliptica Hustedt Plate 7/5
op 11, t 272/40.
Validating diagnosis: Differt a typo habitu elliptico.
The taxon is nowhere marked or named, and Hustedt did not mention it in
his later works. In spite of elaborate search we have failed to locate
a specimen that could be associated with Hustedt's illustration.
Op. 11A. A. Schmidts Atlas der Diatomaceenkunde, Heft 69, t 273-276, 1911.
11A-1 Eunotia gibbosa var. paraguayensis Hustedt Plate 7, 1-2
Op 11A, t 273/7.
Validating description: Valvae constrictae apicibus cuneatis, rotundatis,
longitudine fere 60 nm, latitudine c. 17 M™.
In the Hustedt Collection there are only three slides labelled "Paraguay,
leg. Dr. Th. Herzog. 1912. St.", nos. 90/45-47, and there is no material.
The size of these three slides was originally rather short, and they were
subsequently mounted on 1x3" slides. The cover slips are square, one is
only a fragment. For Hustedt's standard these slides were made in a very
negligent fashion, and it is unlikely that Hustedt made these slides. I
suppose that Hustedt got these before 1912 from his teacher E. Lemmermann
and glued them onto properly sized slides in 1912. Lemmermann (Arch. Hydro-
biol. 5, 291-324, 1910) had earlier treated the same material and on
p 318, f 17, he describes a new taxon, Eunotia gibbosa var. gracilis with
which Hustedt's taxon, perhaps the very specimen, is probably identical.

24
The following slide which is here selected as lectotype contains one
unmarked, unnamed specimen of the taxon:
90/46. Paraguay, leg. Dr. Th. Heraog.
Finder: 402.4
N.B. Hustedt crossed out "gibbosa" and "var. paraguayensis nov. var"
in the legend of his Atlas copy and corrected the epithet to read "Eu.
didyma Grun. f. genuina."
11A-2 Eunotia serrata Hustedt Plate 7/3-4, 8/1-3
Op 11 A, t 274/1-2.
Validating diagnosis: A Eun. robusta lateribus ventralibus fere strictis
et striis intercalates differt.
Holotype:
L3/46. Foss. Marin. New Jersey, U.S.A.
A slide with the two illustrated valves, picked and mounted by E. Thum,
his Catalogue VII no. 1140.
Paratype:
L3/45- Diatomaceenerde von Atlantic City, N.J., U.S.A.
Marked and named specimens, both fragments.
Finder: 407-8-9; 523-3
A strewn slide by Thum, his Catalogue VII no. 3547-
Op. 12. Bericht iiber einige Bacillariaceenproben des Achensees (Tirol).
Arch. Hydrobiol. 7, 693-700, 1912.
12-1 Cymbella brehmii Hustedt Plate 8/4-7
Op 12, p 695, f 6.
One unmarked specimen was found which is here taken as lectotype:
Nel/ll. Graben bei Pertisau, Tirol.
Finder: 432.5-
Op. 13. A. Schmidts Atlas der Diatomaceenkunde, Heft 70, t 277-280, 1912.
13—1 Cymatopleura elliptica var. constricta forma lata Hustedt Plate 9/3
Op 13, t 280/1.
Holotype:
Xa/39- Fossil-Sussw. Siebenburgen.
A slide with several picked Cymatopleura valves mounted by E. Thum. Two
of these belong in Hustedt's taxon. They are not named.
N.B. This is, strictly speaking, not a new taxon but a species (Cym.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
25
kinkeri Pantocsek) which received the new status of a forma and a new name.
Hustedt's explanation suffices as valid description. The magnification
of Hustedt's illustration must be xlOOO, the specimen is identical with
that on our t 9/3.
Op. 14. A. Schmidts Atlas der Diatomaceenkunde, Heft 71, t 281-284, 1912.
Remarks on taxa 14-1 through 14-10:
In the legend of Plate 283 Hustedt says that the material used for
that plate came exclusively from Reichelt's collection. This is confirmed
in op 22, p 107, where Hustedt reports that the illustrations on Plate
28l were based on slides placed at his disposition by Reichelt. In the
Hustedt Collection there is only one slide labelled "Columbia River" which
was made in 19H, no. Xll/37, all other slides are younger than op 14.
Evidently Hustedt returned the slides from Columbia River to Reichelt.
However, he did keep two slides from Hainspach which also contributed to
Plate 281.
For the reasons explained above it is necessary to designate lectotypes
partly based on slides which are younger than 1912 and mainly based on
the above-mentioned slide no. Xll/37. None of the taxa concerned is
anywhere marked or recorded by name.
14-1 Tetracyclus lacustris var. compacta Hustedt
Op 14, t 281/3.
Description in op 22, p 96.
Lectotype:
Xll/37- Columbia River, Oregon. 10.
Our specimens were found at finder positions 376.2-3 and 527-4.
Pafalectotype:
XI1/33- Columbia River. 145- 8.
One specimen at finder position 523-6.
This slide is from 1913-
Plates 8/8-10, 9/1-2
14-2 Tetracyclus lacustris var. tenuis Hustedt
op 14, t 281/4.
Description in op 22, p 97-
Lectotype:
Xll/37- Columbia River, Oregon. 10.
Finder position of the unmarked specimen: 436.4-5
Plate 10/1
14-3 Tetracyclus ellipticus var. constricta Hustedt
Op 14, t 281/9.
Description in op 22, p 101.
Plate 10/2-4

26
Lectotype:
j/52. Fossile Diatomaceen. Breite Busch bei Hainspach.
This slide was mounted by Hugo Reichelt.
Our specimens were found at finder positions 559-6-9 and 647.1-4-
14-4 Tetracyclic ellipticus var. lancea forma lata Hustedt Plate 11/1-5
Op 14, t 281/11.
Description in op 22, p 102.
Hustedt's two figures represent valves from two very different localities.
Since Hustedt figures the German specimen with his description (op 22,
f 8), the following slide is taken as lectotype:
j/53. Fossile Diatomeen. Breite Busch bei Hainspach.
This is a Reichelt mount.
Specimens were found at finder positions 471.6, 525-4-5, and 616.7.
Further slide:
XI1/37- Columbia River, Oregon. 10.
Finder: 467-5 and 558.9
14-5 Tetracyclus ellipticus var. lancea forma elongata Hustedt
Plate 12/1-2
op 14, t 281/13-14.
Description in op 22, p 102.
Lectotype:
XI1/33- Columbia River. 145- 8.
The slide was mounted 1913-
Our unmarked, unnamed specimens are from finder positions 407-5-8 and 465*9
14-6 Tetracyclus ellipticus forma minor Hustedt Plate 12/5-7
Op 14, t 281/16.
Validating diagnosis: Differt a typo valvis minoribus.
Lectotype:
XI1/37- Columbia River, Oregon. 10.
Our specimens are at finder positions 375-3, 496.7, and 551-5
N.B. Hustedt incorporated his Atlas illustration in the species in
op 22, p 100.
14-7 Tetracyclus ellipticus var. lancea forma subrostrata Hustedt
Plate 12/3-4
op 14, t 281/17.
Description in op 22, p 102.
Lectotype:
XI1/37. Columbia River, Oregon. 10
The unmarked specimens are at finder positions 346.2 and 556.6
14-8 Tetracyclus ellipticus var. inflata Hustedt Plate 13/l
Op 14, t 281/19.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
27
Description in op 22, p 101.
Lectotype:
XI1/37- Columbia River, Oregon. 10.
Our specimen was found at finder position 498.6
Tetracyclus ellipticus var. latissima Hustedt
Op 14, t 281/20-22.
F 20-21 constitute Hustedt's forma major (tx 14-9) and f 22 his forma
minor (tx 14-10), q.v. - In op 14 Hustedt did not state which specimens
were to constitute his var. latissima. He evidently understood both "formae"
only as morphologic size variants and not as nomenclatural entities.
Nevertheless, the formal description of var. latissima is provided in op 22,
p 101.
14-9 Tetracyclus ellipticus var. latissima forma major Hustedt Plate 13/2-4
Op 14, t 281/20, 21.
Included in var. latissima by Hustedt in op 22, p 101.
Lectotype:
Xll/37. Columbia River, Oregon. 10.
Specimens were found at finder positions 345-3, 405-2, 613-4-5,and 613.8-9.
14-10 Tetracyclus ellipticus var. latissima forma minor Hustedt
Plate 13/5-7
Op 14, t 281/22.
Included in var. latissima by Hustedt in op 22, p 101.
Lectotype:
Xll/37. Columbia River, Oregon. 10.
Specimens were found at finder positions 406.2-3, 518.5, and 521.9.
14-11 Surirella frickei Hustedt Plate 14/1-3
op 14, t 282/15.
Validating description: Valvae late ovales, leniter heteropolares, longitu-
dine circiter I60um, latitudine fere 90 urn.
Holptype:
X5/39- Port Townsend, Wash. Surirella ... (illegible) Terry
The slide was mounted by W.A. Terry, the specimen is marked.
Finder: 375-2-5
N.B. In his Atlas copy Hustedt corrects the origin of the sample into
"r.m." In addition, there is a pencil note in Hustedt's hand: "Siehe S.
regina Jan. XXI,5-"
14-12 Surirella birostrata Hustedt Plate 15/1-8
Op 14, t 282/16-23.
Description in op 24, p 66; see also op 37, p 86 and op 71, p 434.

28
Holotype:
Xl/53- Gremsmiihlen, Holstein.
Marked specimens named on label.
Finder: 374-7-8; 376.9; 470.1; 620.6; 621.5; 647-7; 678.1; 678.3; 680.6.
Isotype:
24/30. Gremsmiihlen.
Marked specimen named on label.
Finder: 252.4-5-
14-13 Surirella costulata Hustedt Plate 16/1-5
Op 14, t 282/24-27.
Description in F. Meister, Kieselalg. Asien, p 39, f 109, 1932.
Holotype:
XI/95- Sgei Sangatta, Borneo.
The Taxon is rather frequent, unmarked, named on the label.
N.B. Hustedt synonymized his taxon Sur. lemmermannii (tx 46-H) with
S. costulata, assuming that it was a contamination.
14-14 Surirella distinguenda Hustedt Plates 17/1-3, l8/l
Op 14, t 283/5- Description included in plate explanation.
Holotype:
218/56. Togo, Westafrika 1912. Lagunenschlick.
Marked specimens, all valves slightly twisted, named on label.
Finder: 226.6 (i-type); 377-9; 435-1-4-
14-15 Surirella robusta var. splendida forma constricta Hustedt
Plate 18/2-3
Op 14, t 283/9-11-
Description in op 71 , p 437-
There is only one slide from the type locality Kitzbuhel in the collection
that was made at orprior to the publishing date of op 14- This slide does
not bear a Surirella that could be combined with the taxon in question,
and therefore no type can be produced. However, Hustedt mounted (1923)
a slide with three picked valves named "Surirella splendida f. constricta
Hust." on the label. This slide is here proposed as neotype:
X3/93. Hoikalampi. Finnland.
14-16 Surirella traunsteineri Hustedt Plate 19/1-2
Op 14, t 283/12. Description included in plate explanation.
Holotype:
71/22. Indischer Ozean.
Marked, unnamed specimen.
Finder: 317-2-5-
N.B. In op 53 (t 362) Hustedt corrects himself by combining this
fragment with S. curvifacies Brun, "die Bezeichnung S. Traunsteineri Hust.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
29
ist einzuziehen."
14-17 Stenopterobia intermedia var. densestriata Hustedt Plate 19/3
Op 14, t 284/13-
Description in op 23, p 115-
There is only one contemporaneous slide from Kitzbuhel in the collection,
and there is no specimen of this taxon on it. Since Hustedt did not care
to name or mark this forma on any slide, we are not in the position to
offer here any kind of a type.
Op. 17- A. Schmidts Atlas der Diatomaceenkunde, Heft 72, t 285-288, 1913.
17-1 Eunotia globosa Hustedt Plate 20/l
Op 17, t 285/1-
Validating description: Valvae latere dorsali fere semicircular!, apicibus
obtuse rotundatis, longitudine circiter 80 urn,
latitudine ca. 37 urn.
Holotype:
L2/l6. Demerara River.
Marked specimen named on label.
Finder: 318.6-9-
17-2 Eunotia geniculata Hustedt Plates 20/2-3, 2l/l-4
Op 17, t 285/2.
Description in op 173, p 395-
There are two contemporaneous slides, each with one marked specimen named
on the label. As lectotype is taken:
L2/9. Demerara R.
Finder: 366.8-9.
Isolectotype:
L2/10. Demerara River.
Finder: 322.1 (i-type in very oblique position)-
Since none of these two specimens is in a favourable position for
photography, pictures of two specimens are here included which Hustedt discusses
in op 173- These marked and named specimens are from the following slide:
322/20a. Igarape Grande. Brasilien. 211.a.2.
Finder: 228.8; 254-4 (f 24 in op 173).
17-3 Eunotia didyma var. tuberosa Hustedt Plate 22/2-3
Op 17, t 285/10.
Validating diagnosis: A typo differt media parte inflata.

30
The taxon is not marked or named. It is frequent on the following slide
(labelled "Eun. didyma") which is chosen as lectotype:
L2/76. Insel Banka.
17-4 Eunotia didyma var. media Hustedt Plate 22/l
Op 17, t 285/11.
Validating diagnosis: A varietate tuberosa habitu graciliore, a varietate
recta media parte inflata differt.
Holotype:
Li/49- Demerara River.
Marked specimen named on label.
Finder: 495-8.
17-5 Eunotia didyma var. recta Hustedt Plate 23/1-2
Op 17, t 285/12.
Validating diagnosis: A typo habitu stricto differt.
( In op 93j p 176j Hustedt discusses this taxon shortly which may also be
interpreted as description)
Holotype:
Ll/6l. Demerara River.
Marked specimen named on label.
Finder: 317-1.
17-6 Eunotia didyma var. elegantula Hustedt Plate 23/5-6
Op 17, t 285/14.
Description in op 68, p (59); also mentioned in op 93, p 175-
Of the two slides with marked specimens, both named on the labels, the
following shall be the lectotype:
Ll/56. Demerara River.
Finder: 648.4 (i-type).
Isolectotype:
Ll/55. Demerara River.
Finder: 404-9.
17-7 Eunotia didyma var. claviculata Hustedt Plate 23/3-4
op 17, t 285/16.
Validating diagnosis: A typo habitu claviformi differt.
(Mentioned without description in op 93, p 175)
The taxon is nowhere marked or named. As lectotype is therefore adopted:
L2/76. Insel Banka.
The taxon is fairly frequent.
17-8 Eunotia didyma var. maxima Hustedt Plate 24/1-5
Op 17, t 285/17-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
31
Validating diagnosis: Valvae magis maiores quam typus, longitudine circiter
150 u, latitudine in media parte c. 30 urn.
Holotype:
Li/57- Demerara River.
Marked specimen named "Eunotia gibbosa var. maxima Hust." on the label.
Finder: 703.1-4-
17-9 Eunotia didyma var. curta Hustedt Plate 22/4-7
op 17, t 285/23-24.
Validating diagnosis: Valvae curtiores obesioresque quam in typo.
The taxon is not marked or named. The following slide (labelled "Eun.
didyma") contains many specimens shaped like the taxon and is therefore
taken as lectotype:
L2/76. Insel Banka.
17-10 Eunotia reflexa Hustedt Plate 25/1-2
Op 17, t 285/25.
Description in Proshkina-Lavrenko, Diatomovyi analiz 3, p 68, 1950.
Holotype:
L3/10. Demerara River.
Marked specimen named on label.
Finder: 351-7-
17-10a Eunotia reflexa forma minor Hustedt Plate 25/3
Op 17, t 285/26(?)-27.
Description in Proshkina-Lavrenko, Diatomovyi analiz 3, p 68, 1950.
Holotype:
L3/1. Demerara River.
Marked specimen named on label.
Finder: 498.6.
17-11 Eunotia rabenhorstii var. maxima Hustedt Plate 25/4
Op 17, t 285/28
Description in op 122, p 69 (under E. rabenhorstii).
Holotype:
L3/2. Demerara R.
Marked specimen named on label.
Finder: 369.1-4.
17-12 Eunotia claviceps Hustedt Plate 25/5-7
Op 17, t 285/29-
Description in op 122, p 68 (under E. damasii).
Holotype:
Li/ll. Demerara River.

32
Marked specimen named on label,
Finder: 497*3-6.
17-13 Eunotia subrobusta Hustedt Plate 26/1-4
Op 17, t 286/2-8.
Validating diagnosis: A Eunotia robusta habitu magis graciliori et axe
apicali inflexiori differt.
Of the many slides with marked and named specimens the following is
declared as lectotype:
L3/67- Demerara River.
Finder: 344-8 {i-type f 5).
Isolectotypes:
Ll/57. Demerara River.
Finder: 496.6-9 (i-type f 6).
L2/95. Demerara River.
Finder: 441.1-2 (i-type f 7).
L3/3- Demerara River.
Finder: 492.4-7 (i-type f 4).
L3/62. Demerara River.
Finder: 523-8-9
L3/65- Demerara River.
Finder: 436.6.
L3/66. Demerara River.
Finder: 522.9-
17-14 Eunotia muelleri Hustedt
Plates 26/5-6, 27/1-4
Op 17, t 286/9-15-
Validating diagnosis: A Eunotia subrobusta valvis minoribus minusque
arcuatis differt.
The taxon is marked and named on six slides. As lectotype is chosen:
L2/4. Demerara River.
Finder: 342.1-2; 372.9 (i-type f 14?)-
Isolectotypes:
L2/5- Demerara River.
Finder: 459-9-
L2/97. Demerara River.
Finder: 554-5-
Ll/49- Demerara River.
Finder: 608.4-7-
La/8. Demerara River.
Finder: 311. 8.
S2/63- Demerara River.
Finder: 287-5-
17-15 Eunotia trigibba Hustedt Plate 27/5-8
Op 17, t 286/16-18.
Validating description: Valvae trigibbae apicibus longis, subrotundatis,
axe apicali modice arcuata, circiter 23-53 M™
longae, in media parte 8-11 urn latae.
Of the several slides, all with marked specimens named on the labels, the
following may serve as lectotype:
S2/63- Demerara River.
Finder: 430.1 (i-type f 16).
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
33
Isolectotypes:
14/22. Demerara River.
Finder: 532.7 (i-type f 18).
L3/88. Demerara River.
Finder: 319-2-5 (i-type f 17).
L3/89. Deme rara River.
Finder: 518.1.
L-3/87- Demerara River.
Finder: 672.6.
Plate 27/9
17-16 Eunotia trigibba var. abrupta Hustedt
Op 17, t 286/19.
Validating diagnosis: A typo apicibus abrupte cuneatis-rotundatis differt.
Holotype:
L,3/91. Demerara River.
Marked specimen named on label.
Finder: 706.6.
17-17 Eunotia pyramidata Hustedt Plate 28/1-3
op 17, t 286/20-24.
Validating description: Valvae in latere dorsali tribus tuberibus pyramidi-
formibus, longitude circiter 38-54 urn.
Two slides contain marked specimens named on the labels. Lectotype:
L2/97- Demerara River.
Finder: 556.1-2 (i~type f 23?).
Isolectotype:
L2/96. Demerara River.
Finder: 493.8 (i-type f 24?)-
17-18 Eunotia pyramidata var. depressa Hustedt
op 17, t 286/25.
Validating diagnosis: Differt a typo tuberibus depressis.
Holotype:
L2/98. Demerara River.
Marked specimen named on label.
Finder: 278.9.
Plate 28/4-5
Remark on tx 17-19 through 26 and 4i to 42:
Please compare the initial remarks to tx 14-1 through 10 on p 25.
17-19 Eunotia reicheltii Hustedt
Op 17, t 286/26-30.
Hustedt forgot to select and to name one of the two varieties
simultaneously described (the following tx 17-20 and 21) as the nominate variety
Eun. reicheltii var. reicheltii. Therefore the species Eun. reicheltii
as well as the two varieties are illegitimate.

34
17-20 Eunotia reicheltii var. triodon Hustedt Plate 28/6-14
Op 17, t 286/26-28.
The combination is illegitimate because no nominate variety exists (see
tx 17-19)• I therefore name here Hustedt's taxon
Eunotia hinziae Simonsen, nov, spec.
Syn.: Eun. reicheltii var. triodon Hustedt, op 17, t 286/26-28.
Valvae lineares, trigibbae, circiter 25-30 urn longae, 5-6 urn latae, cir-
citer 18 striae transapicales in 10 urn.
This species is dedicated to my technical assistant, Ms. Friedel Hinz,
who earned great merits in tracing Hustedt1s types for this work.
Lectotype:
L3/12. Oregon. Columbia River.
A single mount made 1924 by Hustedt labelled "Eunotia reichelti Hust.
var. triodon Hust."
Isolectotype:
XI1/37. Columbia River, Oregon. 10.
Our unmarked, unnamed specimens were found at finder positions 255*1,
287-3, 491.2, and 617.5-
Two further slides contain marked specimens with Hustedt's invalid epithet
on the labels. It is improbable, however, that these specimens belong
in this taxon. They must be conspecific with Eun. pyramidata Hustedt
(cf tx 17-17):
L3/3. Demerara River.
Finder: 46O.7.
L3/l1. Demerara River.
Finder: 674-7-8.
17-21 Eunotia reicheltii var. bidens Hustedt Plate 28/15-16
Op 17, t 286/29-30.
Because of the situation discussed under tx 17-19 and 17-20 this taxon
has to be redescribed:
Eunotia hinziae var. diodon Simonsen, nov. var.
Syn.: Eun. reicheltii var. bidens Hustedt, op 17, t 286/29-30.
Differt a typo marginibus dorsalibus bigibbis.
Lectotype:
XI1/37- Columbia River, Oregon. 10.
Unmarked, unnamed specimens; ours were found at finder positions 398.5
and 436.4.
17-22 Eunotia luna var. intermedia Hustedt Plate 29/I-3
Op 17, t 286/33.
Validating diagnosis: Differt a typo valvis aliquanto extensis.
Lectotype:
XI1/37. Columbia River, Oregon. 10.
The taxon is neither marked nor named, frequent.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej':
35
17-23 Eunotia luna var. elongata Hustedt Plate 29/4
Op 17, t 286/34.
Validating diagnosis: A typo differt valvis elongatis.
Lectotype:
XI1/33. Columbia River. 145. 8.
Unmarked, unnamed specimens were found at finder positions 550.2 and 618.7.
17-24 Eunotia luna var. aequalis Hustedt Plate 30/1-2
. Op 17, t 286/35.
Validating diagnosis: Differt a typo lateribus aequalibus. '
Lectotype:
XI1/37. Columbia River, Oregon. 10.
Unmarked, unnamed specimens of this frequent taxon were found at finder
positions 283-9 and 555-2, the latter being in a circle marking another
diatom.
17-25 Eunotia luna var. globosa Hustedt Plate 29/5-8
Op 17, t 286/36.
Validating diagnosis: A typo lateribus dorsalibus semicircularibus lateri-
busque ventralibus non vel leniter concavis differt.
Lectotype:
XII/37. Columbia River, Oregon. 10.
The taxon is frequent, not marked, not named.
17-26 Eunotia luna var. trapezica Hustedt Plate 30/5-8
Op 17, t 286/37-38.
Description in Proshkina-Lavrenko, Diatomovyi analiz 3, p 73, 1950.
Lectotype:
XIi/37« Columbia River, Oregon, 10.
The taxon is frequent, unmarked, unnamed.
17-27 Eunotia monodon var. undulata Hustedt Plate 30/3-4
op 17, t 287/2.
Validating diagnosis: A typo lateribus dorsalibus undulantibus differt.
Holotype:
Ll/57- Demerara River.
Marked specimen named on label.
Finder: 532.3.
17-28 Eunotia monodon var. constricta Hustedt Plate 31/1-3
Op 17, t 287/3
Description in op 93, P 171.
There are two contemporaneous slides with marked specimens named on the
labels. The lectotype, probably i-type, may be:

36
Ll/49- Demerara River.
Finder: 621.1.
Isolectotype:
L2/52. Demerara R.
Finder: 232.4.
17-29 Eunotia zygodon var. depressa Hustedt Plate 3l/4
Op 17, t 287/5
Validating diagnosis: A typo gibbis depressis differt.
Holotype:
L4/20. Demerara River.
Marked specimen named on the label.
Finder: 532.8.
17-30 Eunotia zygodon var. emarginata Hustedt Plate 32/1-2
Op 17, t 287/6.
Validating diagnosis: A varietate nominata gibbis obtusis differt.
Lectotype:
L3/65- Demerara River.
Marked, unnamed specimen.
Finder: 431-3 (i-type?).
17-31 Eunotia zygodon var. lata Hustedt Plate 33/1-3
Op 17, t 287/7.
Validating diagnosis: A typo valvis latioribus differt.
Holotype:
14/24. Demerara River.
Marked specimen, the i-type fragment, named on label.
Finder: 523-8.
There is another marked specimen named "Eunotia zygodon var. lata Hust."
on the label, but it is much closer to Hustedt's var. compacta (see next
taxon 17-32):
L2/3- Demerara River.
Finder: 521.2-3.
17-32 Eunotia zygodon var. compacta Hustedt Plate 32/4-5
Op 17, t 287/8.
Validating diagnosis: Differt a typo valvis apicaliter compressis.
Holotype:
L4/18. Demerara River.
Marked specimen named "Eunotia zygodon var." on label.
Finder: 439-6.
17-33 Eunotia zygodon var. curta Hustedt
Plate 31/5-6
SCANNED fcdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
37
Op 17, t 287/9-
Validating diagnosis: Differt a typo valvis curtis.
Holotype:
L2/98. Demerara River.
Marked specimen named on label.
Finder: 224-4-7-
17-34 Eunotia zygodon var. gracilis Hustedt Plate 34/1-3
Op 17, t 287/10.
Validating diagnosis: Varietas cum habitu graciliore quam typus.
Holotype:
L4/23. Demerara River.
Marked specimen named on label.
Finder: 372.5-
17-35 Eunotia zygodon var. elongata Hustedt Plate 32/3
op 17, t 287/14.
Validating diagnosis: Valvis elongatioribus quam typus.
Holotype:
L4/22. Demerara River.
Marked specimen named on label.
Finder: 699.5.
Isotype:
L4/18. Demerara River.
Marked specimen named "Eunotia zygodon var." on label.
Finder: 495.8-9.
17-36 Eunotia epithemioides Hustedt Plate 34/4-5
op 17, t 287/16-19.
Description in op 31, P 141; see also op 56, p 144-
There are three slides with marked specimens named on the labels. As
lectotype is chosen:
218/8. Kamerun. Lag. (Lag. = Lagune)
Finder: 319.2 (i-type fig. 18).
Isolectotypes:
218/22. Kamerun. Lag. 218/29. Kamerun-Lag.
Finder: 376.5-8 (i-type f 17). Finder: 373-9-
17-37 Eunotia frickei Hustedt Plates 35/1-5, 36/1
Op 17, t 288/2-5.
Validating description: Valvae leniter arcuatae, apicibus vix recurvatis,
obtuse rotundatis, circiter 90-120 um longae,
12-15 striis in 10 um.
Of the several slides with marked specimens, all named on the labels, the
following may serve as lectotype:

38
Ll/lOO. Demerara River.
Finder: 348.2.
Isolectotypes:
L2/l. Demerara R.
Finder: 582.7.
L2/2. Demerara River.
Finder: 709-5.
L2/3. Demerara River.
Finder: 230.4.
L2/4. Demerara River.
Finder: 526.6.
L2/5. Demerara River.
Finder: 252.5; 557-1.
L3/66. Demerara River.
Finder: 46O.7
17-38 Eunotia frickei var. elongata Hustedt Plate 36/2-4
Op 17, t 288/1.
Validating diagnosis: Differt a typo valvis elongatis gracilioribusque.
There are three slides with fitting marked specimens, all named "Eunotia
Frickei Hust," on the labels, of which the following may be the lectotype:
L2/95. Demerara River.
Finder: 198.6.
Isolectotypes:
L4/23. Demerara River.
Finder: 520.6-9.
L2/l. Demerara R.
Finder: 293*5-6.
17-39 Eunotia prolongata Hustedt 34/6-8
Op 17, t 288/6-8.
Validating description: Valvae bigibbae, leviter arcuatae, apicibus pro-
longatis rotundatis, circiter 50-90 urn longae.
Of the three slides with marked specimens named on the labels the
following is selected as lectotype:
L2/96. Demerara River.
Finder: 553-2 (i-type f 7)•
Isolectotypes:
Ll/l2. Demerara River.
Finder: 224-9 (i-type f 6)..
L2/95- Demerara River.
Finder: 588.7 (i-type f 8).
17-40 Eunotia prolongata var. simplex Hustedt Plate 34/9
Op 17, t 288/9.
Validating diagnosis: A varietate nominata lateribus dorsalibus agibbosis
differt.
Holotype:
Ll/12. Demerara River.
Marked specimen named on label.
Finder: 260.8
17-41 Eunotia recta Hustedt
Op 17, t 288/10-12.
Plate 37/1-6
iCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
39
Validating description: Valvae fere rectae marginibus linearibus, par-
allelis, apicibus rotundatis, circiter 50-150 jim
longae, 8-20 urn latae.
The following three slides are all mounts with 2-3 picked valves named
on the labels. All are younger than op 17 (1924 and 1926). Lectotype:
L3/5- Columbia River, Oregon.
Isolectotypes:
L3/4 Oregon, Columbia River.
L3/6. Columbia River.
' (With a girdle view, ventral side towards observer).
17-42 Eunotia submonodon Hustedt Plate 38/1-5
Op 17, t 288/18.
Description in op 56, p 143; see also op 78, p 307-
There is a small number of picked specimens on two slides, all properly
labelled. All are younger than op 17, Hustedt mounted them in 1924 and
1925- The following is selected as lectotype:
L3/60. Oregon. Columbia River.
Isolectotype:
L3/61. Columbia River. Oregon.
Further slides, both with picked specimens:
L3/56. Demerara River. S.Am.
L3/58. Demerara River.
Op 18. A. Schmidts Atlas der Diatomaceenkunde, Heft 73, t 289-292, 1913-
18—1 Eunotia didyma var. inflata Hustedt Plate 39/1-5
op 18, t 289/1-2.
Validating diagnosis: A Eun. didyma valvis inflatis differt.
The taxon is not marked or recorded anywhere, but the type slides, both
mounts of H. Reichelt, are preserved. The taxon is not infrequent on these,
perhaps a little more on the following which may serve as lectotype:
239/63. Kings River. Newada. U.S.A.
Isolectotype:
239/62. Kings River. Newada. U.S.A.
18-2 Eunotia rostellata Hustedt Plate 39/6-10
Op 18, t 289/3-4.
Description in R. Patrick, Farlowia 2, p 163, 1945-
The remarks made with the preceding taxon apply also to this species.
Lectotype:

40
239/63* Kings River. Nevada. U.S.A.
Isolectotype:
239/62. Kings River. Nevada. U.S.A.
18-3 Eunotia incurvata Hustedt Plate 40/1-3
op 18, t 289/13.
Validating description: Valvae lateribus dorsalibus leniter convexis,
lateribus ventralibus levissime concavis vel
rectis, apicibus subacutis, subito incurvatis,
circiter 60 nm longae, 8-10 urn latae.
Kith no marked or named specimens existing, the following slide is chosen
as lectotype:
XI1/37. Columbia River, Oregon. 10.
The taxon is not frequent, specimens were found at finder positions 313-2,
373*2, 402.3.
18-4 Eunotia clavata Hustedt Plate 40/4-6
op 18, t 289/14-15.
Validating description: Valvae axe apicali fortiter arcuata, marginibus
ventralibus concavis, marginibus dorsalibus quadri-
gibberis, circ. 50-100 urn longae.
The taxon is nowhere marked or named, Lectotype:
XI1/37. Columbia River, Oregon. 10.
Specimens were found at finder positions 405*5-6, 462.6, and 643-7-
Isolectotype:
S3/47. Columbia River. 145. 6.
At finder position 523*5-6 a specimen very similar to Hustedt's f 15 was
found.
18-5 Eunotia compacta Hustedt Plate 4l/l-3
op 18, t 289/19-20.
Validating description: Valvae plus minusve lineares apicibus subapiculatis
circiter 50-70 |im longae, 13-15 Mm latae.
The taxon is nowhere marked or named. As lectotype is therefore proposed:
XI1/33. Columbia River. 145- 8.
The taxon is not frequent, specimens are at finder positions 466.1, 501.6,
and 529.7.
18-6 Eunotia bidentula var. elongata Hustedt Plate 41/4-5
Op 18, t 289/40.
Validating diagnosis: Differt a typo valvis elongatis.
The taxon is not marked or named anywhere. As lectotype is therefore taken:
Kb/99- Christiania, Nordamerika.
Elongate specimens were found at finder positions 315*6 and 410.9-
This is, quite likely, a mount of Hugo Reichelt. Hustedt re-labelled it
BY pAhUTA yURI, Kiev-2007,e-mail pahutaqi
41
with his youngest type of slide labels. A mounting year is not noted,
contrary to Hustedt's habit.
N.B. In op 78, p 277, Hustedt includes this taxon in Eun. bidentula
W. Smith.
18-7 Eunotia tauntoniensis Hustedt Plate 42/1-6
Op 18, t 291/1-3.
Description in op 56, p 146, 1926, and not in Patrick (Farlowia 2, p 163,
1945), as is put down in Patrick & Reimer (Diat. United- States, Monogr.
Acad. Nat. Sci. Philadelphia 13, p 191, 1966), where the orthography of
the species name was also changed, incorrectly and without reason.
Holotype:
Ll/15. Taunton, Mass., U.S.A.
The taxon is frequent, not marked, named on the (replaced) label.
Op 19. A. Schmidts Atlas der Diatomaceenkunde, Heft 74-75, t 293-300, 1913.
19-1 Eunotia truncata Hustedt Plate 4l/9
Op 19, t 293/20.
Validating description: Valvae compactae, leviter arcuatae, apicibus
latissime rotundatae, longitudo circiter 42 urn,
latitudo c. 17 (int.
Holotype:
L2/9. Demerara R.
Marked specimen named on label.
Finder: 529-6 (the lacquer ring is almost rubbed off).
19-2 Eunotia tenuis Hustedt Plate 41/6-8
op 19, t 293/21-22.
Validating description: Valvae tenues, modice arcuatae, apicibus subrostra-
tis, aliquantum acutis, circiter 20-22 urn longae,
4-5-5 um latae.
Holotype:
88/68. Cabo Penas, Tierra del Fuega.
This is a slide mounted by E. Thum (his "Abtheilung Clev. No. 506 III").
Marked specimens named on label.
Finder: 466.4-5; 468.8.
N.B. Because of Eunotia (pectinalis var.) tenuis Grunow in Cleve
& Moller, Diatoms, no. 141, I878, Hustedt's taxon has to be renamed:
Eunotia tenuivalva Simonsen, nov, nomen,
Syn. E. tenuis Hustedt, op 19, t 293/21-22, 1913.

42
19-3 Eunotia thumii Hustedt Plate 43/1-4
Op 19, t 294/1-6.
Validating description: Valvae axe apicali valde arcuata, marginibus ven-
tralibus fortiter concavis, marginibusque dorsali-
bus bigibbis, apicibus latissime rotundatis,
c. 23-72 urn longae, 6-12 jum latae in media parte.
Holotype:
88/61. Isla Desolat ion, Tierra del Fuega. (probably Isla Desolacion)
A mount of Thum (his "Abtheilung Clev. No. 504,1").
The taxon is named on the label, frequent, unmarked.
19-4 Eunotia chilensis Hustedt Plate 43/5-10
Op 19, t 294/7-12.
Validating description: Valvae axe apicali leniter arcuata, margine dor-
sali trigibba, gibberis parvis, longitudine
22-50 urn.
Holotype:
88/68. Cabo Penas. Tierra del Fuega.
A mount of £. Thum (his "Abtheilung Clev. No. 506 III").
Marked specimens named on the label.
Finder: 319-4; 402.2 (2 specimens); 403-1-4 (2 specimens); 466.4-5; 468.8.
19-5 Eunotia aequalis Hustedt Plate 44/1-5
Op 19, t 294/16-21.
Validating description: Valvae leniter arcuatae, marginibus plus minusve
parallelis, apicibus paulo protractis, late
rotundatis, circ. 40-80 urn longae, 6.5-9 Mm latae.
Two marked, though unnamed, specimens occur on the following slide which
is therefore selected as lectotype:
88/71- Cabo Penas. Ti erra del Fuega.
Another Thum mount (his "Abtheilung Clev. No. 505.1").
Finder: 431-9; 491-3. The taxon is not rare, and a few additional unmarked
specimens are here included.
19-6 Eunotia sudetica var. bidens Hustedt Plate 44/6-7
Op 19, t 294/22-23.
Description in op 23, p 56; see also op 71, p 182 and op 78, p 300.
The taxon is not marked or named. It is fairly frequent on the following
slide and in accordance with the protologue and is therefore taken as
lectotype (the nominate variety is named on the label):
12/37. Lomnitz. Rsgb. 38. (Rsgb. = Riesengebirge)
19-7 Gomphocymbella ruttneri Hustedt Plate 43/11-14
Op 19, t 294/29-32.
Description in op 24, p 72.
SCANNED «***> B, P™ yORI. Kiev-2007,e-maiX ^t^-**".-
43
Holotype:
l/2. U.S. 2. Lunz. Schlegleck an Stein. (U.S. = Untersee)
The taxon is abundant, unmarked, named on label and recorded as "n. spec."
on record sheet.
N.B. In op 71 j, p 366, Hustedt synonymized and included this taxon in
Gomphocymbella ancyli (Cleve) Hustedt.
19-8 Rhopalodia novae-zelandiae Hustedt Plate 45/1-3
t Op 19, t 294/40.
Description in op 16, p 263; see also op 98, p 457-
The name occurs on two slides containing the same sample in which the taxon
is abundant. The slide in the "Rhopalodia box" (Vb) is mounted with highly
fragmented material, for which reason the other slide is here taken as
lectotype:
llO/ll. Neu Seeland. Rhopalodia Novae Zelandiae Hust. Ausg. Crypt, exsic-
catae. Wiener Hofmuseum.
Isolectotype:
Vb/l. Neu Seeland. Rhopalodia Novae Zelandiae Hust. Crypt, exsiccatae.
19-9 Tetracyclus rostratus Hustedt Plate 45/4-6
Op 19, t 294/41.
Description in op 22, p 99-
*s for the history of the Reichelt slides from Columbia River, see the
inxcial remarks ahead of tx 14-1, p 25.
Lectotype:
XIl/37. Columbia River, Oregon. 10.
Unmarked, unnamed specimens. The taxon is rare, our specimens were found
at finder positions 495-1-2 and 526.3-6.
19-10 Tetracyclus javaaicus Hustedt Plate 46/I-5
Op 19, t 294/42-43-
Description in op 22, p 99-
Only one specimen was found marked and named which may not even represent
one of the two illustrations. It must, nevertheless, be considered as the
holotype:
66/8. Java, Pangerango, 2500' hoch. Thum.
Finder: 590.4. - Unmarked specimens of this rather rare taxon were found
at finder positions 312.8, 461.4, and 619.8.
19-11 Surirella dumae Hustedt Plates 46/6-8, 47/1-3
Op 19, t 295/5-6.
Description in op 31, P 169.
This taxon is nowhere marked or named. In addition, there are no
contemporaneous slides with material from the Duma area, East Africa. I assume
that Hustedt re-mounted a set of part of his East African material later

44
and discarded the older slides. There are three samples from the Duma area,
and in one the taxon is frequent. It is on the following slide, mounted
1931, which is here proposed as lectotype:
222/72. D.O. Afrika. Regenpfutze im Dumagebiet.
(D.O. Afrika = Deutsch Ostafrika).
19-J 2 Navicula speciosa Hustedt Plates 47/4, 48/I
Op 19, t 295/8-9.
Description in Boyer (Proc. Acad. Nat. Sci. Philadelphia 78 Suppl., p 310,
1927).
Holotype:
N6/92. Jacoma, Wash. 110. (= Tacoma)
Marked specimens named Navicula pseudoschumanniana on the label.
Finder: 255-2 (i-type f 8); 467.8 (i-type f 9).
The magnification of Hustedt's figures is xlOOO and not x900.
N.B. In op 26, t 309 ("Nachtrag") Hustedt renames this taxon Navicula
pseudoschumanniana Hustedt, because of Nav. speciosa Mann 1907*
Boyer (loc. cit.) transfers this taxon to the genus Caloneis, but under
the illegitimate name speciosa. The correct transfer is made herewith:
Caloneis pseudoschumanniana (Hustedt) Simonsen, nov. comb.
Syn. Caloneis speciosa (Hustedt ex Boyer) Boyer, loc. cit., nom. illegit.
19-13 Fragilaria virescens var. elliptica Hustedt Plate 48/6-IO
Op 19, t 297/7, 17-19.
Description in op 23, p 37, where this taxon was also declared as "nov.
var." (cf. tx 23-1); see also op 71, p 142.
Hustedt's four illustrations represent specimens from three different
localities. The following slide contains many (unmarked) specimens of this
taxon, and Hustedt evidently used it for his illustrations. This slide
is here taken as lectotype:
Ka/41- Riesengebirge. Fragilaria virescens.
A mount with the labels of Hugo Reichelt.
19-14 Fragilaria robusta Hustedt Plate 50/1-10
Op 19, t 297/79-83.
Validating description: Valvae lineari-lanceolatae apicibus late rotun-
datae, 24-50 urn longae, 10-15 um latae, striae
circ. 6 in 10 urn.
There is no fossil material from Pensacola. This is evidently an erroneous
note by Hustedt, because also on the labels of all three slides cited below
there is the letter "R" for Recent. - There are three slides with marked
specimens named on the labels. As lectotype is chosen:
Ka/7* Pensacola.
Finder: -311.3-6 (i-type f 83)J 437-1-4 (i-type f 80).
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqweS>rambl<
Isolectotypes:
Ka/6. Pensacola.
Finder: 285-4-7 (i-type f 8l); 495-4 (i~type f 82).
Ka/31• Pensacola.
Finder: 467.7 (i-type f 79).
N.B. The striae of the specimen at 467.7 partly revealed their finer
structure. It is very similar to that of the lineolate Naviculas, with
about 48-52 "lineolae" in 10 um.
19-15 Fragilaria sublineata Hustedt Plate 49/5
Op 19, t 297/84-86.
Validating description: Valvae lineares marginibus parallelis apicibusque
leniter protractis, rotundis, circiter 45-65 pro
longae, 6 um latae.
This taxon is nowhere marked or recorded by name, and no specimens could
be located on the many contemporaneous slides. Therefore we cannot present
a type, and the species has to remain a species inquirenda for the time
being.
19-16 Fragilaria longissima Hustedt Plates 48/2-5, 49/1-4
op 19, t-298/9-13.
Validating description: Valvae angustissime lanceolatae ad lineares
apicibusque vix protractis, obtuse rotundatis, longi-
tudine plusquam 100 usque ad 200 um, latitudine
circiter 5-6 um.
The taxon is not marked or named anywhere. It is frequent on the following
slide which is selected as lectotype:
220/22. Victoria-See. Afrika.
This is a mount of E. Thum.
N.B. Valves were encountered with one labiate process at each end (the
normal situation) and some with apparently no processes at all.
19-17 Genus Fragilariopsis Hustedt
Op 19, t 299/9-14.
Description included in plate explanation.
The type is F. antarctica (Castracane) Hustedt, Syn. Fragilaria antarctica
Castracane.
N.B. The genus was subsequently proposed as section of the genus
Nitzschia by Hasle (Nova Hedwigia, Beih. 39, p 111, 1972).
19-18 Surirella tenuissima Hustedt Plate 51/1-7
op 19, t 299/15.
Description in op 98, p 504*

46
The taxon is not marked or named. The following slide is probably the one
mentioned in the description in op 98 and is therefore taken as lectotype:
65/98. Java. E. Thum. I.
Specimens were found at finder positions 313-7, 314*4, 377-1-2, 401.3,
and 493-1.
19-19 Surirella submarina Hustedt Plate 5l/ll
Op 19, t 299/16-17.
Validating description: Valvae elliptico-lineares marginibus parallelis
vel leniter constrictis apicibusque rotundatis,
circiter 118-162 nm longae, 45-48 urn latae.
Although all slides labelled "Kap Feuerland" were searched for the taxon,
no specimen could be discovered. It is therefore regretted that we are
unable to present a type.
19-20 Stauroneis schroederi Hustedt Plate 44/8-10
op 19, t 299/31.
Description in op 23, p 99.
Holotype:
Nal/100. Wilhelmstal, an Eurhynchium. 1884.
Marked specimen named on label.
Finder: 341.6-9.
19-21 Synedra pulchella var. lacerata Hustedt Plate 51/8-10
Op 19, t 300/32-33.
Description in Gemeinhardt (Pflanzenforschung 6, p 5, 1926); see also
op 78, p 192.
The taxon is nowhere marked or named. The nominate variety is abundant
on the following slide, among it all kinds of irregular axial areas can
be found. The slide may be the lectotype:
220/21. Victoria-See. Afrika.
A mount of E. Thum.
19-22 Synedra pulchella var. minuta Hustedt Plate 51/12-17
Op 19, t 300/34-35.
Description in op 71, p 160; see also op 78, p 192.
The taxon is nowhere marked or named. It is not uncommon on the following
slide from the type locality which is therefore proposed as lectotype:
K2/9- Gr. Ploner See, Plankton.
Op 23. Bacillariales aus den Sudeten und einigen benachbarten Gebieten
des Odertales. Arch. Hydrobiol. 10, 1-128, 1914.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler. ru
(23-1 Fragilaria virescens var. elliptica Hustedt)
Op 23, p 37, f 8.
This taxon was first published - also as nov. var. - in op 19, t 297/17-19,
see tx 19—13 -
23-2 Eunotia robusta var. tetraodon forma abrupta Hustedt Plate 52/1-3
Op 23, p 57, f 14-15.
No specimen being marked, the following slide is chosen as lectotype:
1
1 10/48. Schr. I884. 339. Eulengb. (Schr. = Schroder) ,
Our specimens are at finder positions 285.2-5 and 433*9.
N.B, In op 78, p 273-274 Hustedt includes this taxon in Eun. robusta
var. tetraodon (Ehrenb.) Ralfs.
23-3 Achnanthes lanceolata var. ventricosa Hustedt Plate 52/4-5
Op 23, p 64, f 32.
The taxon was not found on slides from the locality named in the proto-
logue, Friedersdorf. A specimen of the size of f 32 was found in a lacquer
ring on the following slide and is therefore taken as lectotype:
10/26. Schr. I884. 317. Dorfbach. Pinnularia mesogongyla E.
Finder: 432.1.
N.B. In op 71, P 208, Hustedt combined this taxon with the species.
In op 79, p 409, however, he separated it again.
Geitler (Plant. Syst. Evol. 126, 377-392, 1977) could show that this
form is untenable. The shape is due to the perizonium outline of the
species.
23-4 Caloneis silicula var. tenuis Hustedt Plate 52/6-7
Op 23, p 68 (no illustration).
There being no marked specimen, the following slide is here adopted as
lectotype:
12/3. Riesengb. Graben b.d. diirr. Fichte, Erdmannshof.
The taxon is rather rare, our specimens are at finder positions 493-2-5
and 551.1-4-
23-5 Neidium affine var. amphirhynchus forma undulata Hustedt Plate 52/10
Op 23, p 72 (no illustration).
With no marked specimen the following is chosen as lectotype:
12/95. Gr. Lessen. Schr. 1887.
Finder position of the unmarked specimen: 316.3-

48
23-6 Neidium productum var. constrictum Hustedt Plate 52/8-9
Op 23, p 73, f 42.
Holotype:
Nel/80. Riesengebirge, Erdmannshof. Graben b.d. diirren Fichte.
Marked specimens named on label.
Finder: 281.8; 430.5; 531-8 (i-type?); 621.3-6; 675-3-6.
23-7 Pinnularia appendiculata var. silesiaca Hustedt
Op 23, p 77 (no illustration).
We have been unable to locate slides or material labelled "Westfufi der
Eule" in which this taxon is to be "very rare". No type specimen can
therefor be produced here.
23-8 Pinnularia karelica var. stauroneiformis Hustedt Plate 53/1-3
Op 23, p 8l (no illustration).
The taxon is nowhere marked. As lectotype is here selected:
12/95. Gr. Lessen. Schr. 1887.
On the right label is written "Pinnularia karelica CI.". - The taxon is
not frequent. Our specimens were found at finder positions 467.3 and 584.3.
23-9 Pinnularia borealis var. brevicostata Hustedt Plate 53/7-8
Op 23, p 82 (no illustration).
No specimen is marked. Lectotype:
1.1/37. Eulengb. 1886. 5.
This slide contains material from Heinrichau, the type locality. Our
specimen is at finder position 522.5-8.
23-10 Pinnularia major var. hyalina Hustedt Plate 53/10
Op 23, p 90 (no illustration).
The taxon is nowhere marked. We found one specimen on slides from the type
locality that can be associated with what Hustedt had in his mind, and
this is here proposed as lectotype:
12/3. Riesengb. Graben b.d. diirr. Fichte, Erdmannsdorf.
Finder: 519*5.
23-11 Pinnularia viridis var. interrupta Hustedt Plate 53/9
Op 23, p 92, f 23.
A marked specimen does not exist. Therefore the following is taken as
lectotype:
10/54. Schr. 1884. 345- Eulengeb.
Finder: 524.8.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
49
23-12 Navicula bacilliformis var. cruciata Hustedt Plate 53/4-6
Op 23, p 94 (no illustration).
In the absence of marked specimens the following slide is selected as
lectotype:
10/53- Schr. I884. 344. Eulengb.
Finder: 407-1-2; 440.1.
Paralectotype:
10/54. Schr. I884. 345. Eulengeb.
Finder: 404-9-
23-13 Surirella apiculata var. constrieta Hustedt Plate 54/1-2
Op 23, p 126 (no illustration).
The following slide is selected as lectotype:
10/4. Schr. I884. 295. W. Giersdorf.
Finder positions of some unmarked specimens with appreciably concave sides:
348.5; 374-5; 553-3-
Op. 25. A. Schmidts Atlas der Diatomaceenkunde, Heft 76, t 301-304, 1914.
25-1 Synedra ulna var. impressa Hustedt Plate 54/3
op 25, t 302/18.
Description in op 31, P 139; see also op 71, p 152, and op 78, p 199.
The taxon is not marked or recorded by name. In addition, a locality named
"Heistritz", as given on t 301 and 302 cannot be found, and we have grave
doubts that such a village ever existed. Very likely it is a misreading
of the name Weistritz from where there is quite a number of slides in the
collection. The material was collected I884 by Bruno Schroder and given
to Hustedt. On one of these slides we found a specimen with an outline
similar to the illustration of Hustedt. This may here serve as lectotype:
10/33- Schr. 1884. 324. Weistritz.
Our specimen was found at finder position 468.2-3.
25-2 Synedra affinis var. obtusa Hustedt Plate 54/4-8
Op 25, t 304/13-16.
Validating diagnosis: Differt a typo apicibus obtuse et late rotundatis.
No species being marked or named, the following slide is taken as lectotype
144/96. Saline Artern.
The taxon is not rare, normally broken.
N.B. In op 78, p 219, Hustedt includes this taxon in Synedra tabulata
var. obtusa (Fantocsek) Hustedt. This latter taxon is not identical with
Syn. tabulata var. obtusa (Arnott ex Van Heurck) Ross.

50
Op. 26. A. Schmidts Atlas der Diatomaceenkunde, Heft 77-78, t 305-312, 1914
26-1 Climacosphenia truncata Hustedt Plate 55/1-8
Op 26, t 308/1-4, 11.
Validating description: Valvae angustissime cuneiformes, polis pedalibus
rotundatis, polisque capitalibus latissime trun-
catis, circiter 932-1132 urn longae, 35-40 um latae
prope polum capitalem.
There are two contemporaneous slides with marked specimens named on the
labels. As lectotype is selected:
Jd/98. Miang Besar. Borneo
Finder: 475-7 (i-type f 1,2, and 4).
Isolectotype:
Jd/99- Miang Besar. Borneo.
Finder: 432.8-9 (i-type f 3).
26-2 Surirella brevicostata var. elongata Hustedt Plate 56/1-5
Op 26, t 309/1.
Validating diagnosis: Differt a varietate nominata habitu elongate
Holotype:
XI/59- Tanganyika-See.
Marked specimen named on label.
Finder: 317-3-
The valve of this specimen is slightly twisted about its apical axis.
26-3 Surirella brevicostata var. constricta Hustedt Plate 57/1-2
Op 26, t 309/2
Description in op 111, p 505-
There are three slides with marked specimens, all named on the labels.
As lectotype is taken:
220/39. Tanganyika-S. West, Exp.
Finder: 465*9 (i-type).
Isolectotypes:
220/38. Tanganyika See. 220/40. Tanganyika-See. West, Exp.
Finder: 313-6. Finder: 705-6-9.
26-4 Surirella ceylanensis var. oblongistriata Hustedt Plates 57/3-4,
58/1-2
Op 26, t 309/4-5.
Description included in plate explanation.
The two illustrated specimens are on two slides, both marked with names
on labels.
Lectotype:
Jd/98. Miang Besar. Borneo.
Finder: 502.6 (i-type f 5)-
SCANNED &dJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*
Isolectotype:
Jd/99. Miang Besar. Borneo.
Finder: 489-7 (i-type f 4).
26-5 Surirella oblongo-elliptica Hustedt Plate 59/1-3
Op 26, t 309/6.
Validating description: Valvae lineari-ovales, levissime heteropolares,
apicibus late rotundatis, circiter 135Mm longae,
47 Mm latae.
Holotype:
X6/3I. Miang Besar, Borneo.
Marked specimen named on label.
Finder: 407-6-9-
26-6 Surirella pseudocorais Hustedt Plate 60/1-3
Op 26, t 309/7.
Validating description: Valvae late ellipticae apicibus rotundatis, leviter
heteropolares, longitudine circiter 100 um,
latitudine c. 73 um-
Holotype:
X6/43- Miang Besar, Borneo.
Marked specimen named on label.
Finder: 617-7-
26-7 Surirella borneensis Hustedt Plate 6l/l-2
Op 26, t 309/8.
Validating description: Valvae late lineari-ellipticae apicibus latissime
rotundatis, paulissime heteropolares, circ. 100 um
longae, c. 61 um latae.
Holotype:
X6/49. Miang Besar. Borneo.
Marked specimen named on label.
Finder: 432.8.
26-8 Surirella sparsipunctata Hustedt
Op 26, t 309/15.
Description in op 111, p 516.
Holotype:
X4/30. Tanganikasee. 3rd Tang. Exp. G.S. West
Marked specimen named on the label.
Finder: 469-5-
The above specimen is in a rather oblique position. Therefore an additional
specimen is here included from a slide younger than op 26. It is a single
mount made 1924:
X4/32. Tanganika See. 6.
Plates 62/1-3, 63/1-3

52
26-9 Surirella septentrionalis Hustedt Plate 64/1-2
Op 26, t 309, in an addendum to the unexplained f 32 on plate 2y9, op 19 •
Validating description: Valvae late ovales, leviter heteropolares, apicibus
late rotundatis, longitudine circiter 55 um,
latitudine c. 39 urn.
Holotype:
X6/87. See im nbrdlichen Norwegen.
Marked specimen named "Surirella subfastuosa Hust." on a new label.
Finder: 344-5-
N.B. In op 64, plate 367 ("Berichtigung"), Hustedt changes the name
to S. subfastuosa, because of S. septentrionalis 0strup.
26-10 Pinnularia esox forma minor Hustedt Plate 64/3-4
Op 26, t 310/5.
Validating diagnosis: Valvae minores quam eae typi.
The taxon is not marked or recorded by name. It is not uncommon on the
following slide which may serve as lectotype:
175/13- Diatomeen-Erde v. Areskutan. Schweden.
This is a strewn slide mounted by E. Thum. Specimens were found at finder
positions 253-8, 347-9, 433-9, 439-6.
26-11 Pinnularia esox forma major Hustedt Plate 65/1-3
Op 26, t 310/13-
Validating diagnosis: Valvae maiores quam eae typi.
No marked or named specimen exists of this taxon. The locality given by
Hustedt ("California, fossil, freshwater") is also rather vague. On all
contemporaneous slides we searched one specimen was found on the following
slide which is here proposed as neotype:
102/58. Diatomaceen-Erde v. Washoe. Newada, Calif. (sic!)
A strewn slide of E. Thum, his catalogue VII no. 3575-
The finder position of this unmarked specimen is 313*2.
Op. 27. A. Schmidts Atlas der Diatomaceenkunde, Heft 79, t 313-316, 1914-
27-1 Rhizosolenia eriensis var. europaea Hustedt Plate 65/4-5
Op 27, t 314/24-26.
Validating diagnosis: A typo copulis angustioribus crebris differt.
Holotype:
G/68. Nord-Finnland.
A dry mount with the i-type of f 24 marked, named "Rhizosolenia eriensis"
on the label.
Finder: 409-3-6.
N.B. In op 70, p 597- f 342, Hustedt includes this taxon in Rhizosol,
eriensis var. morsa W. G.S. West. - The nominate variety occurs also on
the slide, and it is far more frequent. This suggests that a separation
of the two taxa is not without problems.
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaq,
53
27-2 Rhizosolenia styliformis var. longispina Hustedt Plate 66/1-2
Op 27, t 316/5-7.
Description in op 70, p 586, f 334.
No marked or named specimens exist. The taxon is frequent, along with the
nominate variety, on the following slide which is here offered as neotype:
44/44. Plankton. Atlant. Ocean.
A mount of E. Thum.
Op. 28. A. Schmidts Atlas der Diatomaceenkunde, Heft 80, ,t 317-320, 1920.
28-1 Rhizosolenia karstenii Hustedt Plate 66/3
Op 28, t 318/9.
Hustedt's reference to a figure of Karsten replaces a description.
We were unable to locate any slide or material from the Valdivia Expedition
(Deutsche Tiefsee-Expedition 1898-1899) in Hustedt's collection. Since
the taxon is nowhere recorded by name, we are not in the position to
present a type of any sort of it.
Op. 29. A. Schmidts Atlas der Diatomaceenkunde, Heft 81-82, t 321-328,1920.
29-1 Chaetoceros denticulatus forma angusta Hustedt Plate 67/3
Op 29, t 324/5-
Validating diagnosis: A varietate nominata valvis cum axe apicali curtiore
differt.
This forma is not marked or named. A few specimens approaching the
dimensions of Hustedt's illustration were found on the following slide which
may serve as lectotype:
45/48. Hongkong.
Specimens are at finder positions 383-8-9 and 488.7-
29-2 Chaetoceros denticulatus forma lata Hustedt Plate 67/1-2
Op 29, t 324/6.
Validating diagnosis: A varietate nominata valvis cum axe apicale longiore
differt.
Holotype:
45/48. Hongkong.
No specimen on this slide is marked, only the name of the nominate variety
is on the label. However, at finder position 588.8 we found the i-type
of f 6; another specimen is at 771-2.
Op. 31. Bacillariales. In: B. Schroder (ed.), Zellpflanzen Ostafrikas,
gesammelt auf der Akademischen Studienfahrt 1910. Hedwigia 63,117-173,1921.

54
31-1 Achnanthes subhudsonis Hustedt Plate 68/1-9
Op 31, p 144, f 9-12.
Since no marked specimens exist, the following slide is here selected
as lectotype:
219/45- Amani. Urwald. Schr. 16.
The taxon is abundant, named on record sheet.
31-2 Achnanthes exigua var. constricta Hustedt Plate 68/10-13
Op 31, p 145, f 7-8.
The taxon is recorded from two slides on the record sheets, of one slide
coordinates were noted by Hustedt. This is therefore taken as lectotype:
219/19. Amani, Urwald. 25-8.10. Schr. 7
Finder: 706.2
Paralectotype:
219/33. Amani, Urwald. Schr. 12.
Finder: 497-5-8.
N.B. This taxon is identical with that bearing the same name described
by Torka (Zeitschr. Naturwiss. Abt. d. Naturwiss. Vereins Posen 16, p 8,
f 3a, 1909). Hustedt recognized this fact also in op 79, p 386, where his
own taxon is not even mentioned. However, Torka dealt with a different
combination, he implicitly transferred the nominate variety to the genus
Cocconeis and actually described our taxon as Cocconeis exigua var.
constricta. Hustedt (in op 79, P 386) must therefore be given the authorship
of the combination Achnanthes exigua var. constricta (Torka) Hustedt.
31-3 Caloneis aequatorialis Hustedt Plate 68/14-16
Op 31, p 148, f 5-6.
This taxon being nowhere marked, the following slide is taken as lectotype:
219/7. Ostusambara, Urwald bei Amani. Schr. Afrika, 3-
The taxon is very frequent, named on record sheet.
31-4 Caloneis aequatorialis var. capitata Hustedt Plate 68/17-18
Op 31, P 148, f 4.
In the absence of marked specimens the following slide is adopted as
lectotype:
219/7. Ostusambara, Urwald bei Amani. Schr. Afrika, 3«
The taxon is not as frequent as the nominate variety and not (nowhere)
named on the record sheet. Our specimens were found at finder positions
225.8 and 433.9.
31-5 Neidium inconspicuum Hustedt Plate 69/1-3
Op 31, p 149, f 21.
Holotype:
219/12. 0.Afrika 4* Amani, Urwald beim Ostusambarageb.
Marked specimen named on label and with stage coordinates on record sheet.
Finder: 521.9
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei':
55
31-6 Pinnularia amaniensis Hustedt Plate 68/19-20
Op 31, P 151, f 1.
Holotype:
219/13. Urwald b. Amani, Ostusambarageb. Schr. 5- 25.8.10.
Marked specimen named on label and with stage coordinates on record sheet.
Finder: 311.5-6.
At position 312.1-2 is a marked girdle view.
31-7 Navicula kwamkujii Hustedt Plate 69/4-9
Op 31, P 154, f 19.
Holotype:
219/41. Amani, Urwald. Schr. 14.
Unmarked specimens named with three sets of stage coordinates on the
record sheet.
Finder: 427.4-5j 458.4; 609.1-
Further slide:
N4/77. Amani. Ost-Afrika.
Marked specimens named on label.
Finder: 434-4-7; 436.4.
This slide was mounted 1925, after the publication. The exact sample cannot
be guessed, the specimens can be considered as paratypes.
31-8 Amphora schroederi Hustedt Plate 69/10-15
Op 31, p 161, f 16-18.
The taxon is nowhere marked. It is recorded on the record sheet of the
following slide which is therefore taken as lectotype:
219/83. Tavetaflufi, Schlamm, b. Lonjoro. 34.
The species is sufficiently frequent.
N.B. The central portions and the ventral striation differ
fundamentally from Hustedt's description.
31-9 Nitzschia goetzeana var. gracilior Hustedt Plate 69/16-20
Op 31, p 166, no illustration.
Illustrated in op 40, t 348/8.
Hustedt notes this taxon with stage coordinates only from a slide from
Lake Victoria. This is therefore taken as lectotype:
220/l. Victoria See, Afrika. Grund. 1.
Finder: 402.6.
Also cited in the protologue, though not in the record sheets, is the
following locality, the specimens are not marked:
219/85. Voifluli, an Algen. 35-
Finder: 228.5-
219/86. Voifluli, an Algen. 35-
Finder: 319-5.

56
31-10 Nitzschia lacustris Hustedt Plate 70/l-4
Op 31, p 166 (no illustration).
Illustration in op 40, t 348/1-2.
The taxon is nowhere marked. It was, among others, recorded from the
following slide which is therefore here adopted as lectotype:
219/94. Victoria See, Muanza, an Pflanzen. 38.
The species is not rare.
31-H Hantzschia amphioxys var. africana Hustedt Plate 71/3-4
Op 31, p 167, f 25.
Holotype:
219/14. Amani, Urwald. Schr. 5. 25.8.10.
Unmarked specimen named on record sheet.
Finder: 346.5-8.
31-12 Hantzschia amphioxys var. distincte-punctata Hustedt Plate 70/5-10
Op 31, p 167 (no illustration).
Hustedt recorded this taxon with a set of stage coordinates from the
following slide which is therefore proposed as lectotype:
219/86. Voiflufl, an Algen. 35.
The taxon is not rare but occurs in single specimens; ours were found at
finder positions 321.9, 411-3, and 619-8.
N.B. In op 32, t 329/21-22, Hustedt gives the first illustrations of
this taxon and at the same time raises it to species rank: Hantzschia
distincte-punctata Hustedt.
Op. 32. A. Schmidts Atlas der Diatomaceenkunde, Heft 83, t 329-332, 1921.
32-1 Hantzschia amphioxys var. major forma capitata Hustedt Plate 71/l-2
op 32, t 329/3.
Description in op 71, p 394.
Holotype:
209/63. Franz Josephs Land. Eismeer.
Marked, unnamed specimen.
Finder: 373-9.
A strewn slide of E. Thum, his no. difficult to read,410.1 or 410.2.
32-2 Hantzschia amphioxys var. gracilis Hustedt Plate 72/1-3
op 32, t 329/6-8.
Validating diagnosis: Differt a typo valvis gracilioribus.
The taxon is not marked or named. On the following slide it is fairly
frequent which is therefore selected as lectotype:
138/72. Passau, Sumpf.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
57
32-3 Hantzschia amphioxys var. rupestris forma capitellata Hustedt
Plate 71/5-6
Op 32, t 329/9.
Validating diagnosis: Differt a varietate rupestri forma rupestri apici-
bus capitellatis.
Holotype:
27/79. LUtzow b. Plathe, im Park.
Unnamed, unmarked specimen.
Finder: 195-4-
32-4 Hantzschia amphioxys var. rupestris forma rostellata Hustedt
Plate 71/7-8
op 32, t 329/10.
Validating diagnosis: Differt a varietate rupestri forma rupestri apici-
bus rostellatis.
Holotype:
27/80. Lutzow b. Plathe, Park.
Unmarked, unnamed specimen.
Finder: 195-7.
32-5 Nitzschia marginulata var. didyma forma elongata Hustedt Plate 72/4-5
Op 32, t 331/1.
Validating diagnosis: A varietate differt valvis elongatis.
The taxon is not marked or named. Several valves were found on the
following slide which was made with material from Reichelt and may here serve
as lectotype:
N10/12. Neapel. 60 m.
Specimens were found at finder positions 373-2-3, 379-1, 585-1-
32-6 Nitzschia mediterranea Hustedt Plate 73/1-4
Op 32, t 331/22.
Description included in plate explanation.
This taxon is nowhere marked or named; the following slide which contains
Reichelt material is therefore taken as lectotype:
N10/12. Neapel. 60 m.
Our specimens are at finder positions 287-4-5 and 407-7-
32-7 Nitzschia angustata var. lanceolata Hustedt Plate 74/1-5
Op 32, t 331/46.
Description in op 37, P 85.
The taxon is not marked. It is named on the record sheet of the following
slide, along with a (so far not transferable) set of coordinates. This
slide is here proposed as lectotype:
1/8. Lunz. U.S. III. Stein. (U.S. = Untersee)
There are several valves on the slide, ours were found at finder positions
493-4-5, 580.4-7, 584.6.

58
32-8 Nitzschia tryblionella var. subsalina forma subconstricta Hustedt
Plate 75/6-8
Op 32, t 332/15.
Description in op 162, p 86.
We have been unable to locate a marked or unmarked specimen from the given
type locality ("Bremen") which is far too vague. Therefore a neotype is
here introduced. It is based on Hustedt's record of this taxon in op 162,
p 86, 1959, from the Geeste River near the village of Bramel. In Hustedt's
type-written records of the slides he notes the taxon from no. 38
indicating that he marked specimens and from no. 39 ("fairly frequent"). As
neotype is now designated:
384/33b. Geeste. 38.
Marked specimen named on record sheet.
Finder: 643*2-5-
Paraneotypes with marked specimens:
384/34a. Geeste. 39- 384/34b. Geeste. 39.
Finder: 552.5- Finder: 427-4-5; 550.5-8; 580.9.
N.B. In op 162, p 86, Hustedt combines this taxon directly with the
species: N. tryblionella forma subconstricta.
Op. 33. A. Schmidts Atlas der Diatomaceenkunde, Heft 84, t 333-336, 1921.
33-1 Nitzschia insignis var. lanceolata Hustedt Plate 75/1-7
Op 33, t 333/16-17.
Validating diagnosis: A varietate nominate valvis lanceolatis differt.
The taxon is nowhere marked or named. It is frequent on the following slide
which was made with Thum material and which may serve as lectotype:
101/23. Kap Feuerland.
On the slide label id noted "R.B." for Recent - brackish water. But the
Thum sample lable says "R.M." for Recent - marine, and the flora on the
slide confirms the latter.
33-2 Nitzschia bremensis Hustedt Plate 76/1-5
Op 33, t 334/4-6.
Description in op 71, p 406, f 769.
Holotype:
213/15. Bremen. Torfkanal. 2.4-08.
The taxon is very frequent, unmarked, named on the label.
33-3 Nitzschia bremensis var. brunsvigensis Hustedt Plate 76/6-8
Op 33, t 334/7-10.
Description in op 71, p 406.
Holotype:
W2/81. Braunschweig-Weddel.
The taxon is fairly frequent, unmarked, named on the label.
SdJVUED BY pAMJTA yURI, Kiev-2007, e-mail pahutaqwe*
59
33-4 Nitzschia sublinearis Hustedt Plate 77/1-7
Op 33, t 334/27-29.
Description in op 71, P 4H, f 786.
There is no contemporaneous slide from the type locality in the collection.
The oldest slides from the Ache River near Kitzbiihel were made in 1933,
mounted in Hyrax. Unfortunately the samples prepared during this time -
eleven boxes with Tyrolian material - are all without collection dates
etc. It is therefore necessary to find a new type. This neotype shall be:
W5/78. Kitzbiihel, Tirol. Ache. 1. 567.
The taxon is frequent, unmarked, unnamed.
N.B. Fjarlier, in Lange-Bertalot & Simonsen (Bacillaria 1:54, 1978),
I cited slide no. 124/60 as type slide. Both slides are mounted with the
same material, but slide no. W5/78, of which I did not know then, is in
a "Nitzschia box", and it was apparently Hustedt's intention to include
this taxon with this latter slide. Slide no. 124/60 is then an isoneotype.
It is not clear to me, whether or not the valves of this taxon are
furnished with a central nodule. Many valves have the characteristic
central gap in fibula distribution, others lack this gap. Electron
microscopic investigations will be necessary to clarify this problem.
33-5 Nitzschia longissima f. costata Hustedt Plates 78/1-6, 79/l
Op 33, t 335/4.
Validating diagnosis: Valvae Nitzschiae longae similes, sed structura
crassiore, singulis interstriis latioribus.
This taxon is not marked or named. We found specimens on three slides with
type material, of which the following may be the lectotype:
66/90. Miang Besar. Borneo.
Our specimens are at finder positions 468.8-9 and 496.6-9-
Isolectotypes:
66/87. Miang Besar. Borneo.
Finder position of the unmarked specimen: 700.3-
66/88. Miang Besar. Borneo.
Finder position of the unmarked specimen: 586.3-6.
N.B. Correction by Hustedt on explanation text of t 350 (op 47):
"Taf. 335, 4 = N. ventricosa Kitton."
This taxon has 36-38 striae in 10 urn. Some of the interstriae are more
heavily silicified which brings about the peculiar structure. The taxon
is thus much coarser in structure than N. longissima (Brebisson) Ralfs
with 52-60 striae in 10 urn (cf. Hasle, Skr. Norske Vid.-Akad., M.-N. Kl.,
N.S. 16, p 21, 1964).
33-6 Nitzschia dissipata var. borneensis Hustedt Plate 77/8-16
Op 33, t 335/22-24.
Validating description: Valvae lineari-lanceolatae apicibus plus minusve
acutis, circ. 35-45 Mm longae, 4-7 (im latae.
The taxon is nowhere marked or named. A few specimens were found on the
following slide which may serve as lectotype:

60
69/67- Sgei Sangatta. Borneo. 3*
Specimens were found at finder positions 283.2; 314-2; 314.8; 374-8;
521.9; 734.8.
N.B. There remains some doubt that the specimen represented by
Hustedt's f 24 belongs in this taxon, it appears to be an ordinary
lanceolate Nitzschia species of which enough specimens occur in the samplek
33-7 Nitzschia obtusa f. parva Hustedt Plate 79/2-6
Op 33, t 336/25-26.
Validating diagnosis: Differt a N. obtusa valvis brevioribus.
The taxon is not marked or named. In this classical sample it is fairly
common. As lectotype is proposed:
69/59* Sgei Sangatta. Borneo. 1.
Specimens were found, e.g. at finder positions 369.4-5; 431-1; 520.4;
612.1.
33-8 Nitzschia clausii forma major Hustedt Plate 79/7-9
Op 33, t 336/27.
Validating diagnosis: A typo differt valvis maioribus.
The taxon is nowhere marked or named. We believe it is from the following
slide which can be considered as lectotype:
302/65. Sandbeke bei Dibbesdorf, Braunschweig.
Our specimens lie at finder positions 439-4-5 and 617.3-
33-9 Nitzschia submarina Hustedt Plate 79/10-14
oP 33, t 336/34-38.
Validating description: Valvae anguste lanceolatae apicibus plus minusve
protractis, circ. 32-55 urn longae, c. 5 l^n latae,
cum nodulo centrali leviter incurvato.
This taxon is also not infrequent in the sample. No specimens are marked.
As lectotype is therefore chosen:
69/59. Sgei Sangatta. Borneo. 1.
Specimens were found at finder positions 250.7; 369-4-5; 403-9; 492.8;
520.1.
Op. 34- A. Schmidts Atlas der Diatomaceenkunde, Heft 85, t 337-340, 1921.
34-1 Chaetoceros hamatus Hustedt Plate 80/3-4
Op 34, t 338/5-6.
Validating description: Valvae parvae, longitudo axis apicalis circiter
6 jLim, valva terminalis cum setis hamaeformibus.
The taxon is nowhere marked or recorded by name. We were unable to locate
specimens on the slides with material from Cohn 1912 and can therefore
not produce a type here.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
61
34-2 Chaetoceros compressus var. gracilis Hustedt Plate 80/1-2
Op 34, t 338/7-
Description in Skvortzow, Philipp. J. Sci. 46: 78, 1931-
The taxon is not marked or recorded by name. The following lectotype is
here designated:
45/65. Japan, Inlandsee.
The taxon is not frequent; our specimens are at finder positions 196.8-9
and 283.9.
34-3 Chaetoceros pseudocrinitus var. tropica Hustedt Plate 8l/4
^
Op 34, t 339/9.
Description included in plate explanation.
The situation is the same as with taxon 34-1, we have been unsuccessful
in finding a specimen that can be affiliated with this taxon with
sufficient certainty. We regret, therefore, that we have no type available.
Op. 35- A. Schmidts Atlas der Diatomaceenkunde, Heft 86, t 341-344, 1921.
35-1 Chaetoceros frickei Hustedt Plate 8l/l-2
Op 35- t 344/3-4.
Description included in plate explanation.
Holotype:
44/75. Diatomeen aus der Bay von Yeddo.
A slide with stained plankton mounted by E. Thum, his catalogue VII no.
3391 -
The specimens are unnamed, unmarked. At finder position 281.2-5 the i~type
of f 3 was found, at 461-3-6 that of f 4-
35-2 Chaetoceros reicheltii Hustedt Plate 81/3
Op 35, t 344/6.
Description included in plate explanation.
The taxon is neither marked nor named. We did not succeed in finding a
specimen that could be combined with the illustration with sufficient
certainty.
Op. 36. Bacillariales aus Innerasien, gesammelt von Sven Hedin. In: S.
Hedin (ed.), Southern Tibet 6 (3) Bot., 107-152. Stockholm, 1922.
36-1 Cyclotella lacunarum Hustedt Plate 82/1-8
Op 36, p 116, f 20.
This taxon is not marked but recorded for the following two slides, with
(so far not transferable) coordinates. The following slide is here selected

62
as lectotype:
67/17. Pamir, Asien, 36. Beim O.Rand v. Kl. Kara-Kul. 3720 m.
Finder: 437-5-6 (very oblique); 551.4 (i-type?); 347-8 (girdle view).
Isolectotype:
67/18. Pamir, Asien, 36. Beim Ostrand v. Kl. Kara-Kul. 3720 m.
Finder: 642.1-4 (very oblique); 406.4-5.
36-2 Cycletella tibetana Hustedt Plate 82/9-11
Op 36, p 117, f 19.
Lectotype:
67/59. Tibet. Lag. 76. B.
Unmarked specimens named on record sheet.
Finder: 46I.6; 462.7-8.
N.B. In Hustedt's copy of op 36 there is a pencil note beside the
species name in Hustedt's hand: "=C. ocellata Pant."
36-3 Fragilaria asiatica Hustedt Plate 82/12-17
Op 36, p 119, f 28-30.
Lectotype:
67/63. Tibet, D. Lager 27-28.
Unmarked specimens named on record sheet. The taxon occurs in masses. Each
valve has one labiate process on one end.
36-4 Achnanthes pamirensis Hustedt Plate 82/18-19
Op 36, p 122, f 10-11.
Holotype:
67/15. Pamirgebirge. Asien. 16. Jeschil-Kul, Quelle.
Unmarked specimen named with coordinates on record sheet.
Finder: 224-4-7-
N.B. Our micrographs show that the terminal raphe ends point to
opposite directions.
36-5 Achnanthes hedinii Hustedt Plate 83/I-I3
Op 36, p 122, f 12-14.
Lectotype:
67/63. Tibet, D. Lager 27-28.
The taxon occurs abundantly, named on record sheet.
36-6 Achnanthes pinnata Hustedt Plate 83/14-22
Op 36, p 123, f 15-18.
Lectotype:
67/66. Tibet, E. Lager 134-
Unmarked specimens named on record sheet; the taxon is frequent.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*:
63
N.B. Our investigations indicate that the striae of the rapheless valve
consist of double rows of alternating areolae.
36-7 Neidium rectum Hustedt Plate 83/23-24
Op 36, p 126, f 23-
Holotype:
Nel/75. Nordtibet. 12. Salzsee.
Marked specimens named on label.
Finder: 370.2-5; 374.1; 502.1 (i-type); the two first-named specimens are
girdle views.
36-8 Neidium mirabile Hustedt Plate 83/25-26
Op 36, p 126, f 21.
Holotype:
67/59- Tibet. Lag. 76. B.
Unmarked specimen named with coordinates on record sheet.
Finder: 370.4-
36-9 Neidium punctulatum Hustedt Plate 83/27-29
Op 36, p 127, f 24-
Of the two slides with marked specimens, both with names on the labels,
the following is taken as lectotype:
Nel/79. Mus-tagh-ata. Gletscherbach. Pamir. 25-
Finder: 343-2; 4H-9 (i-type).
Paralectotype:
Nel/78. Mus-tagh-ata. Gletscherbach, Pamir. 21.
Finder: 375-4-5; 555.2-5-
36-IO Neidium didelta Hustedt Plate 84/1-3
Op 36, p 127, f 22.
Holotype:
67/63. Tibet, D. Lager 27-28.
Specimen named with coordinates on record sheet.
Finder: 589-2-3.
There is another, younger (1925) slide with a marked specimen named on
the label which is to be considered as paratype:
Nel/74. Tibet.
Finder: 377-2-5-
36-H Pinnularia divergentissima var. capitata Hustedt Plate 84/4-7
Op 36, p 128, f 7-
Lectotype:
67/2. Pamirgeb. Asien. 24- Mus-tag-ata. Jambulak Baschi, 4300 in .
Unmarked specimens named on record sheet.

64
N.B. R.Ross (Bull. Natl. Mus. Canada 97: 202, 1947) renames this taxon:
Pinnularia divergent!ssima var. hustedtiana Ross, because of P. diver-
gentissima var. capitata Fontell 1917-
36-12 Pinnularia hedinli Hustedt Plate 84/11-12
Op 36, p 128, f 1.
Holotype:
P4/41• Pamir. 23* Mus-tagh-ata. Gletscherbach.
Marked specimen named on label.
Finder: 377-2.
36-13 Pinnularia tibetana Hustedt Plate 85/I-4
Op 36, p 129, f 3-5.
This taxon is not marked. Hustedt records it by name from the following
two slides of which the first-named may serve as lectotype:
67/60. Tibet. Lag. 76. B.
Finder positions of some specimens: 3H-9 (i-type f 3); 551.4.
Isolectotype:
67/59. Tibet. Lag. 76. B.
Finder: 256.1; 312.2; 351-7.
36-14 Pinnularia subborealis Hustedt Plate 85/5-12
Op 36, p 130, f 8-9-
Holotype:
67/2. Pamirgeb. Asien. 24. Mus-tagh-ata. Jambulak Baschi, See, 4300 m+.
Unmarked specimens named on record sheet.
Finder: 223-4; 427-9 (i-type f 8); 459-2 (i-type f 9).
36-15 Pinnularia fonticola Hustedt Plate 86/1-4
Op 36, p 130, f 2.
Holotype:
P4/40- Pamir. 37. b. Quelle am Kl. Kara-kul.
Marked specimen named on label.
Finder: 473-5-8.
In the collection there are two additional slides, both mounted in Hyrax
in 1954, with marked and named specimens, "forma" in one case, which may
be included here:
P4/42. Pamir. Quelle b. Jeschil-Kul. 16.
Finder: 192.6; 312.5.
P4/43- Pamir. Quelle b. Jeschil-Kul. 16.
Finder: 344-6.
This specimen is termed "forma".
N.B. Our micrographs show clearly that this taxon is a lineolate Navi-
cula species. No pseudoloculate structure with the typical outer membrane
can be made out, the striae show the characteristic Navicula lineolation.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
65
As a matter of fact, the type specimen and also the specimens on the two
other slides represent Navicula oblonga Kutzing. It is, in a way,
incomprehensible that Hustedt overlooked this affinity, particularly in the Hyrax
slide specimens. Perhaps he was too preoccupied by his misinterpretation
of the generic affinity.
36-16 Navicula subrhombica Hustedt Plate 87/1-4
Op 36, p 132, f 40-41-
The taxon is recorded by name for two slides, and coordinates are given
for the one mentioned below as second, but the coordinates cannot be
converted to stage coordinates. The first-mentioned slide contains specimens
which are marked with diamond-cut rings which were evidently made later.
This slide is taken as lectotype:
67/32. Tsaidam, Asien, 1. Tossun-nor.
Finder: 221.5; 226.6; 375-5-6; 380.3-6; 381.9; 428.5-8; 472.9; 493-7;
495•5-8.
Isolectotype:
Na2/48. Tsaidain, Asien, 1. Tossun-nor.
There is a third slide with several marked specimens, mounted i960 in
Hyrax with the type material, labelled "Navicula plicatoides Hust.":
N13/82. Tossun-nor. Tibet.
N.B. In op 171) p 332, f 1445, Hustedt gives this taxon the new name
Navicula plicatoides, because of Nav. subrhombica Marsson 1900.
36-17 Navicula hedinii Hustedt Plate 87/5-8
op 36, p 132, f 36.
Holotype:
67/84. Tibet, R. Mapiek-koll. "Dillpar".
Unmarked specimens named (with two sets of coordinates) on record sheet.
Finder: 226.4-5 (i-type); 253.1; 551.1-2.
36-18 Navicula viridula var. pamirensis Hustedt Plate 84/8-IO
0p 36, p 133, f 37-
Holotype:
67/17. Pamir, Asien, 36. Beim 0.Strand v. Kl. Kara-kul. 3720 m.
Unmarked specimens with a set of coordinates and the remark "h!" (=haufig).
36-19 Stauroneis laticeps Hustedt Plate 87/9-12
Op 36, p 135, f 27-
Holotype:
67/59. Tibet. Lag. 76. B.
Marked specimen named with coordinates on record sheet.
Finder: 430.3 (i-type f 27).
Isotype:

66
67/60. Tibet. Lag. 76. B.
Marked, unnamed specimen.
Finder: 285.7.
36-20 Gomphonema hedinii Hustedt Plate 88/8-10
Op 36, p 138, f 34-35.
Of the several localities that Hustedt cites in his protologue the
following is selected as lectotype:
67/23. Pamir, Asien. 31. Bulun-Kul, Quelle.
Unmarked specimens named on record sheet.
Finder: 373-4; 464-7 (i-type f 34?); 639-6-9 (i-type f 35?).
36-21 Cymbella tibetana Hustedt Plate 88/1-7
Op 36, p 139, f 67.
The taxon is nowhere marked. Hustedt recorded it from several samples of
which one, according to his notes, contains the species "sehr haufig".
A slide of this is selected as lectotype:
67/41b. Nordtibet, Asien, 5- Quelle.
Hustedt mounted 1944 a slide with the same sample in Hyrax. For the sake
of clarity a few micrographs made from this slide are here included:
67/41a. Kwen-lun, Nord-Tibet (5)- Sv. Hedin. 6.8.96.
36-22 Amphora ostenfeldii Hustedt Plate 89/I-6
Op 36, p 142, f 38-39-
The unmarked taxon is recorded, with stage coordinates, from the following
slide which must therefore be accepted as holotype:
67/88. Tibet, T. Tjallpak, Atjik-bulak.
The taxon is "zerstreut" (=scattered) on the slide.
36-23 Amphora geniculata Hustedt Plate 88/11-16
Op 36, p 142, f 25-26.
Holotype:
67/63. Tibet, D. Lager 27-28.
Unmarked specimens named on record sheet.
36-24 Hantzschia amphioxys var. compacta Hustedt Plate 89/7-9
Op 36, p 145, f 42.
Holotype:
W2/56. Pamir, 23. Mus-tagh-ata. Gletscherbach.
Marked specimens named on label.
Finder: 472.8; 561.1-2; 581.1; 617.2 (i-type f 42).
SCANNED adJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwei:
67
36-25 Nitzschia ostenfeldii Hustedt Plate 90/1-5
Op 36, p 146, f 58-59.
The first-named locality in Hustedt1s records with the following slide
is proposed as lectotype:
P4/41• Pamir. 23* Mus-tagh-ata. Gletscherbach.
The taxon is not marked, scattered on the slide.
N.B. The taxon was renamed by Hustedt in op 40, t 346, f 21-23, to
Nitzschia pamirensis, because of N. ostenfeldii Van Heurck 1909-
36-26 Nitzschia gradifera Hustedt - Plate 90/6-II
op 36, p 146, f 65-66.
The taxon is nowhere marked. Since we succeeded in discovering the i-type
of Hustedt' s f 65, that slide is here selected as lectotype, although the
taxon is otherwise rare:
67/32. Tsaidam, Asien, 1. Tossun-nor.
Finder: 526.4-
The following slide contains many more specimens which are also named
in Hustedt's records and in the protologue:
67/53. Nordtibet. 11. Salzsee, Lager 31.
N.B. The valves have a very high vault, they appear to be about
semicircular in cross section, which makes them difficult to photograph. The
striae could not be resolved.
36-27 Nitzschia bacillariaeformis Hustedt Plate 92/5-15
Op 36, p 147, f 48-50.
Holotype:
67/50. Nordtibet. 9- Nordlich v. Lager 15-
Unmarked specimens named on record sheet ("haufig").
N.B. The striation, not resolved by Hustedt ("striis inconspicuis"),
could be photographed in oblique light and amounts to 44-45 striae in
10 pm.
36-28 Nitzschia pseudolinearis Hustedt Plate 9l/l-5
Op 36, p 147, f 43-44-
Holotype:
67/59. Tibet. Lag. 76. B.
Unmarked specimens ("haufig") named on record sheet.
36-29 Nitzschia subvitrea Hustedt Plate 92/3-4
Op 36, p 148, f 46-47-
Holotype:
67/67. Tibet, F. Lager 136.
Unmarked specimens named on record sheet.

68
36-30 Nitzschia bacilliforrais Hustedt Plate 89/10-14
Op 36, p 148, f 62-64.
As lectotype is proposed:
67/73- Tibet, J. Lager 169.
Unmarked specimens ("haufig") named on record sheet.
36-31 Nitzschia jugiformis Hustedt Plate 86/7-13
Op 36, p 149, f 60-61.
The slide quoted as type slide in Lange-Bertalot & Simonsen (Bacillaria 1,
P 37j 1978) cannot be the type, because it was mounted later. As lectotype
is now designated:
67/85. Tibet, R. Mapiek-Koll. "Dillpar".
Unmarked specimens ("sehr haufig") named on record sheet.
N.B. Schoeman & Archibald (Diatom Flora of southern Africa 1, 1976)
synonymize this taxon with N. elegantula Grunow. Lange-Bertalot & Simonsen
(loc. cit.) concur with this.
36-32 Nitzschia tibetana Hustedt Plate 87/13-21
Op 36, p 149, f 53-55.
The taxon is nowhere marked. As lectotype is here selected the slide on
which it is recorded by Hustedt as "sehr haufig":
67/41b. Nordtibet, A sien, 5« Quelle.
A slide mounted 1944 in Hyrax with the original sample may here contribute
to better illustrations:
67/41a. Kwen-lun. Nord-Tibet (5). Sv. Hedin. 6.8.96.
36-33 Nitzschia bacillum Hustedt Plate 86/5-6
Op 36, p 149, f 51-52.
The following slide is talen as lectotype:
67/32. Tsaidam, Asien, 1. Tossun-nor.
Marked specimen named on record sheet (accidentally marked with tx 36-16).
Finder: 226.6.
Isolectotype:
Na2/48. Tsaidam, Asien, 1. Tossun-nor.
Unmarked specimen named on record sheet.
36-34 Nitzschia frustulum var. asiatica Hustedt Plate 91/6-10
Op 36, p 150, f 56.
Holotype:
67/73. Tibet, J. Lager I69.
The taxon is unmarked ("sehr haufig"), named N. frustulum v. obtusa n.v."
on record sheet.
36-35 Nitzschia regula Hustedt Plate 92/1-2
Op 36, p 150, f 57.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
69
Holotype:
W2/56. Pamir. 23. Mus-tagh-ata. Gletscherbach.
Marked specimen named on label.
Finder: 496.6-9.
Op. 37- Die Bacillariaceen-Vegetation des Lunzer Seengebietes (Nieder-
Osterreich). Intern. Rev. ges. Hydrobiol. 10, 40-112, 1922.
37-1 Achnanthes austriaca Hustedt ' Plate 93/1-11
Op 37, P 75, f 6-7.
There is no contemporaneous slide with marked or named specimens in the
collection. As lectotype is therefore proposed a slide on which the taxon
is less rare than stated by Hustedt, although it is cited in the proto-
logue:
1/39. Lunz. U.S. Gr. Fichte. Fontinalis. (U.S. = Untersee)
Finder positions of some specimens: 344-3-6 (2 specimens); 377.8-9 (2
specimens); 410.8-9; 499-7-8; 584.1; 619-7-8.
N.B. Hustedt misinterpreted the structure of the raphe valve. All
specimens encountered here have a unilateral central area, in addition
to the initially unnoticed diagonal symmetry of the raphe. That our speci
mens correspond to what Hustedt considered as Achn. austriaca could be
verified by another slide (Mal/8. Lunz, Untersee, an Fontinalis), a Hyrax
slide mounted 1929 which evidently contains the same sample as the
lectotype slide. On this slide there are five circles and the taxon's name is
on the label, and all raphe valves have the one-sided central area reaching
the margin.
37-2 Anomoeoneis zellensis var. linearis Hustedt Plate 93/15-17
Op 37, p 76 (no illustration).
The taxon is nowhere marked or named. As lectotype is therefore selected
a slide with material cited in the protologue:
l/92. Lunz. N.6. Unter-See. Ophrydium-Schleim.
The taxon is fairly frequent.
N.B. In op 166, p 753, f 1115b-c, Hustedt synonymizes this taxon with
and includes it in A. zellensis forma difficilis (Grunow) Hustedt. The
epithet A. zellensis var. linearis is also occupied by 0strup 1910.
37-3 Caloneis latiuscula var. subholstii Hustedt Plate 93/18-19
OP 37, P 76, f 3.
Holotype:
l/49. Lunz. N.Oest, U.S. an Schoenoplectus beim Bootshaus.
Marked, unnamed specimen.
Finder: 494-7.

70
Paratype:
1/47• Lunz. U.S. Schoenoplectus.
Unmarked, unnamed specimen.
Finder: 400.3.
37-4 Cyclotella operculata var. unipunctata Hustedt Plate 93/12-14
Op 37j p 77 (no illustration).
Since no specimens are marked or named, the following slide is proposed
as lectotype:
I/84. Lunz. U.S. Holz, 3.
The photographed specimens are at finder positions 255.2-5 and 524.9.
37-5 Cymbella helvetica var. punctata Hustedt Plate 94/1-3.
Op 37, p 78 (no illustration).
The taxon is not marked or named. Of the two slides made with material
cited in the protologue the following is here designated as lectotype:
2/12. Lunz. U.S. A, 16 m.
Finder: 339.1- 494-2.
Isolectotype:
2/11. Lunz. U.S. A, 16 m.
Finder: 398.6.
37-6 Cymbella sinuata var. ovata Hustedt Plate 94/5-7
Op 37, p 78 (no illustration).
Holotype:
l/2. U.S. 2. Lunz. Schlegleck a. Stein.
Unmarked specimens named on record sheet.
Finder positions of the photographed specimens: 398.9; 435-3; 520.1.
37-7 Diploneis marginestriata Hustedt Plate 94/8-12
Op 37, p 78, f 5.
There are two slides with marked specimens, several in each circle, both
unnamed. Lectotype:
2/6. Lunz. N.Oest. U.S. St. 5. 11 m.
Finder: 342.4-5 (7 specimens).
Isolectotype:
2/5. Lunz, U.S. 5. 11 tiw
Finder: 257.1 (several specimens).
37-8 Epithemia sorex var. gracilis Hustedt Plate 94/4
Op 37, p 79, f 4-
Holotype:
1/9. Lunz. U.S. III. Stein.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe*':
71
Marked specimen named on record sheet.
Finder: 590.1-2.
37-9 Frustulia styriaca var. ventricosa Hustedt Plate 95/i-2
Op 37, p 79, f 8.
Holotype:
1/27. Lunz. U.S. Stein. 3« Schizothrix.
Marked, unnamed specimen.
Finder: 411-4-5.
' The specimen is unfortunately covered with sediment particles which
interfere heavily with the light and thus disturb the image.
N.B. In op 71, P 265, Hustedt transferred this taxon to the genus
Anomoeoneis.
37-10 Navicula densestriata Hustedt Plate 95/3-16
Op 37, p 81, f 14-17.
As lectotype is here selected:
2/67. Lunz. O.S. an Potamogeton. 1.
The taxon is abundant, neither marked nor named.
N.B. In op 171, p 282, Hustedt points to the fact that this taxon
belongs in the genus Achnanthes. He failed, however, to present a formal
new combination. Since the epithet densestriata is occupied for Achnanthes
by Cleve-Euler, a new name has to be introduced:
Achnanthes grubei Simonsen, nov. comb., nov. nomen.
Syn.: Navicula densestriata Hustedt, op 37, p 8l, 1922.
This species is dedicated to Mr Heinz Grube of Messrs. Carl Zeiss, who
gave much valuable advice and support during my work.
37-11 Navicula mutica var. binodis Hustedt Plate 95/17-19
Op 37, P 81, f 10.
Holotype:
3/8. Lunz. Kanal, an Algen.
Marked specimen named on label.
Finder: 432.5-6.
N.B. In op 175, p 612, Hustedt combines this taxon with Navicula neo-
ventricosa, as forma binodis.
37-12 Navicula tuscula var. obtusa Hustedt Plate 95/20-22
Op 37, P 84 (no illustration).
The following slide is chosen as lectotype:
1/30. Lunz. U.S. Bootshaus. Stein.
The taxon is scattered, neither marked nor named except in the protologue.

72
37-13 Neidium distinctepunctatura Hustedt Plate 95/25-26
Op 37, p 84, f 2.
Hoiotype:
2/6. Lunz. N.Oest. U.S. St. 5. 11 m.
Marked specimen named on label.
Finder: 622.4.
37-14 Neidium dubium var. constricta Hustedt Plate 95/23-24
Op 37, p 85 (no illustration).
We had great difficulties in finding a specimen of this "variety" with
appreciably constricted margins. Hustedt's illustration in op 71, f 384b,
is doubtlessly exaggerated as far as the constriction is concerned. As
lectotype is proposed:
1/12. Lunz. U.S. III-IV. 3 m v. U. Stein.
Unmarked, unnamed specimen at finder position 559.7-8.
37-15 Neidium productum var. triundulata Hustedt Plate 95/27
Op 37, p 85, f 1.
We located only one slightly tri-undulate specimen which is marked, not
named, and not the iconotype:
1/67. Lunz. U.S. Phragmites. O.Ufer. 1.
Finder: 548.8.
Op. 39. Bacillariales aus Schlesien. I. Ber. Deutsch. Bot. Ges. 40,
98-103, 1922.
39-1 Caloncis schroederi Hustedt Plate 96/I—5
Op 39, p 100, f 1.
Of the two slides for which Hustedt records this nowhere marked taxon
("haufig") the following is selected as the lectotype:
13/92. Grotte am Zobten, Schlesien. 1.5.21.
At finder position 519-1 is a specimen which may represent the iconotype.
N.B, Krammer (in Krammer & Lange-Bertalot, Naviculaceae, p 112, 1985)
recombines this taxon: Pinnularia schroederi (Hustedt) Krammer.
Op. 40. A. Schmidts Atlas der Diatomaceenkunde, Heft 87, t 345-348, 1922.
40-1 Hantzschia virgata var. gracilis Hustedt Plate 96/9-I3
Op 40, t 345/8-9.
Description in op 71, p 395; also recorded in op 102, p 654.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej':
73
The taxon is not marked or named anywhere. It is not uncommon on the
following slide which is here selected as lectotype:
53/65. Cresswell - Serie No. 2.
A slide of E. Thum, his catalogue VII no. 316O.
Specimens were located, e.g. at finder positions 344-7; 499-2-5; 5^5.4;
582.83 585.9-
40-2 Hantzschia (?) robusta Hustedt Plate 97/1-4
Op 40, t 345/15-16.
Validating description: Valvae in congruentia generis Hantzschiae, lineari-
lanceolatae apicibus protractis, t plus minusve
acutis, longitudine 85-120 urn, latitudine 7-9 uro-
The taxon is not named. The following slide is here chosen as lectotype:
223/5- Siidufer der Schiratibucht, zwischen Papyrus. Victoria Nyanza,
0-Afrika.
Finder positions of the unmarked specimens: 160.6 (i-type f 16) £53-2-5•
Isolectotype:
223/7. Siidufer der Schiratibucht. Vict. Nyanza. 0-Afrika,
The specimen is marked, unnamed.
Finder: 278.9 (i-type f 15).
N.B. The hantzschioid symmetry, of which Hustedt was in doubt, can
be confirmed.
40-3 Hantzschia amphioxys var. obtusa Hustedt Plate 97/5-6
Op 40, t 345/17-
Validating diagnosis: Differt a varietate nominata apicibus vix vel non
protractis.
Holotype:
223/6. Siidufer der Schiratibucht. Vict. Nyanza. O.Afrika.
The specimen is unmarked, unnamed, and was located at finder position 501.8
40-4 Hantzschia amphioxys var. stricta Hustedt Plate 9S/I—4
Op 40, t 345/18,
Validating diagnosis: A typo differt valvis fere strictis.
With no marked or named specimen, the following slide is chosen as
lectotype:
223/6. Siidufer der Schiratibucht. Vict. Nyanza. O.Afrika. Zwischen Papyrus.
Finder position of the unmarked specimen which is not unlikely to represent
the i-type of f 18: 261.4-7-
Isolectotype:
223/5. Siidufer der Schiratibucht. Zw. Papyrus. Vict. Nyanza. O.Afrika.
Finder position of the unmarked specimen: 487-2.
40-5 Hantzschia pseudomarina Hustedt Plates 98/5-6, 99/1-7
Op 40, t 345/19-21.
Description in op 71, p 396, f 754.

74
No marked or named specimens were found on contemporaneous slides. However,
Hustedt mounted twice slides at later times with type material and marked
and named specimens on these. Therefore the following slide, made 1930,
is here designated as lectotype:
Wa/4- Kampsee b. Treptow.
Finder: 432.5-8; 461.6; two unmarked specimens are also included.
Still younger - 1956 - are the following two Hyrax mounts which are then
isolectotypes:
Wa/5- Kampsee bei Treptow. 854- Wa/26. Kampsee bei Treptow. 8.54.
Finder: 379-6; 408.5; 458.8. Finder: 254-2; 312.3.
40-6 Hantzschia virgata var. capitellata Hustedt Plate 100/1-4
Op 40, t 345/22-23.
Description in op 71, p 395, f 753.
The taxon is named on the label of the following slide which is here taken
as lectotype:
Wa/27. Kampsee.
The taxon is very frequent.
Marked, along with tx 40-12, though not named specimens were found on the
following slide which is therefore considered as isolectotype:
W3/64. Kampsee bei Treptow.
Finder: 404-4; 494.7-
40-7 Nitzschia solea Hustedt Plate 100/8-9
Op 40, t 346/1.
Validating description: Frustula halteriformes, apicibus rotundatis, circ.
165 urn longa, in media parte c. 28 urn lata.
Holotype:
W2/38. Island, leg. Conn, 1920.
Marked specimen named "Nitzschia groenlandica Ostr." on label.
Finder: 310.2.
N.B. Correction by Hustedt in op 47, t 350: "Taf. 346,1 = N.
groenlandica Oestrup."
40-8 Nitzschia guineensis Hustedt Plate 100/5-7
Op 40, t 346/8.
Validating description: Valvae lanceolatae, in media parte constrictae,
apicibus vix protractis, circiter 39 urn longae,
in media parte c. 4-5 urn latae.
Holotype:
W7/76. Blanche Bai. Cohn, 1912.
Marked specimen named "Nitzschia" on label.
Finder: 339-5-6.
N.B. The striation is very delicate, although not exceedingly dense.
About 37 striae in 10 um near the centre and 39 towards the apices could
be counted in our micrographs.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
75
40-9 Nitzschia thermalis forma curta Hustedt Plate 96/8
op 40, t 346/12-13.
Validating diagnosis: A N. thermalis forma thermalis valvis curtioribus
differt.
This taxon is nowhere named or marked, the locality given by the Bremen
citizen Hustedt ("Bremen") is far too vague to enable conclusions on the
origin. We can therefore not produce a type here. In addition, to my
knowledge Hustedt never recorded this taxon again from this or another
locality, it is also not mentioned in his treatment of the species in the
"Suftwasserflora" (op 71, p 403) so that I assume that Hustedt had "dropped"
his forma later without expressly stating this anywhere, or he was at that
time not aware of var. minor Hilse (cf. op 71, p 403, f 772) which agrees
largely with Hustedt's forma curta.
40-10 Nitzschia subhybrida Hustedt " Plate 99/8-12
Op 40, t 346/24-26.
Description in op 148, p 45, under Nitzschia pseudohybrida Hustedt.
This taxon is not marked or named on any contemporaneous slide. Hustedt
mounted type material from New Guinea later, 1938, and on one of these
slides he marked specimens and named them on the label. Since a lectotype
has to be designated in this situation, this slide may as well be taken:
W3/93. Neu-Guinea. 2. Cohn.
Finder: 432.1; 437.9; 460.5-6; 493-7; 498.7-
40-11 Nitzschia frickei Hustedt Plate 101/1-4
Op 40, t 347/8-10.
Description included in plate explanation.
The taxon is not marked or otherwise recorded by name. It is very frequent
on a slide mounted by F. Fricke, and I have little doubt that Hustedt used
this slide for the description of the species that he dedicated to Fricke.
This slide may be the lectotype:
Nal/29. D.-Ostafrika. XXX.
N.B. VanLandingham (Catalogue, vol 6, p 3044, 1978) attributes the
authority to "Reichelt ex Hustedt", For this statement no logic reason
can be found, the name of Reichelt appears nowhere in the protologue.
40-12 Nitzschia lacunarum Hustedt Plate 101/5-7
Op 40, t 347/11-12-
Description in op 71, p 406, f 777-
Holotype:
W3/64- Kampsee bei Treptow.
Marked specimens named on label.
Finder: 404-1-4 (i-type f 12); 494-4-5 (i-type f 11).
40-J3 Nitzschia stiliformis Hustedt Plate 96/6
Op 40, t 348/7-

76
Validating description: Valvae anguste lanceolatae apicibus acutis, non
protractis, circiter 75 um longae, 4 urn latae.
The taxon is nowhere recorded by name, nor were marked specimens found.
The "type locality" ("Nordatlantik") given by Hustedt is by far too vague
for any scientific standard, and we are therefore not in the position to
present any sort of type here.
N.B. There is a number of slides in the collection labelled
"Nordatlantik", and these were searched for Hustedt's species, of course. All
we found were specimens of Nitzschia seriata Cleve, and there remains a
strong suspicion that Hustedt's taxon is the same species and has to be
synonymized with and included in Cleve's taxon.
40-14 Nitzschia rostellata Hustedt Plate 103/1-5
Op 40, t 348/9.
Description in op 155, p 127, text f 69-70.
There is only one slide with freshwater material from Jamaica in the
collection, but the repeated search for this species by two persons remained
unsuccessful, so that a type cannot be presented. Fortunately Hustedt
formally described this species in op 155, p 127, and added the Lago
Maracaibo in Venezuela as locality. From this latter material he marked
and named three specimens, and one of these is consequently designated
here as neotype:
343/69h. Lago Maracaibo. Venezuela. St. 17-
Finder: 283-1-4.
Paraneotype:
X7/10. Lago Maracaibo. Venezuela. St. 7-
Finder: 465.1.
The taxon's name appears also on the index sheet of the following slide
indicating a marked specimen:
343/96b. Lago Maracaibo. Venezuela. St. 17.
Finder: 407.2-5-
This latter specimen has a central nodule, however, a character absent
in the other specimens. Prof. Lange-Bertalot who kindly brought this to
my attention, thinks that this specimen belongs to N. elegans Hustedt
(cf tx 155-26) which is furnished with a central nodule, it has also a
different outline.
40-15 Nitzschia schauinslandii Hustedt Plate 102/1-3
Op 40, t 348/20.
Validating diagnosis: A Nitzschia bicapitata Clevei valvis in media parte
leviter constrictis differt.
Since no marked or named specimens exist, the following is proposed as
lectotype:
43/4. Golf v. 01am.
The two specimens are at finder positions 585.3 and 617-4-5.
N.B. There is strong indication that these specimens are variants of
Nitzschia bicapitata Cleve which is also present in this material. Compare
also the following taxa.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
77
40-16 Nitzschia curvilineata Hustedt Plate 102/4-9
op 40, t 348/21-25.
Description in op 108, p 139, under Nitzschia towutensis Hustedt,
The taxon is marked - evidently later - though not named on a
contemporaneous slide which is here taken as lectotype:
43/5. Golf. v. Siam.
Finder: 316.8; 406.8; 434-7; 436.8; 440.7; 554-4-5; 583-4-5.
Hustedt mounted also type material in 1956 and marked and named specimens
on the following slide, thus an isolectotype:
- W2/83. Golf v. Siam. 1565-
Finder: 342.5; 464.6; 522.1; 617-6; 618.4.
N.B. In op 159, p 169, Hustedt synonymizes this taxon with and includes
it in Nitzschia bicapitata Cleve.
40-17 Nitzschia subinflata Hustedt Plate 102/10-21
Op 40, t 348/26.
Description included in plate explanation.
The taxon is not marked or named. Hustedt accidentally encircled specimens
along with the preceding taxon. Both are rather frequent in the sample.
As lectotype the following slide is taken, the finder positions are similar
to the ones of tx 40-16, and the rings were intended to mark this latter
taxon:
43/5. Golf v. Siam.
Finder: 316.8; 406.8; 440.7; 554-4-5; 434-7-
Isolectotype (cf also last taxon):
W2/83- Golf v. Siam. 1565-
Finder: 342.5; 464.6; 522.1; 618.4.
N.B. The micrographs make clear that also this taxon has to be included
in Nitzschia bicapitata Cleve. More slim-shaped specimens tend to have
less curved striae, or there are more straight striae along the main body.
Of the variability of N. bicapitata I have earlier given an idea (in Meteor
Forsch. Ergebn. D 19, t 35/3-15, 1974) which series is by no means
complete, because the specimens were all taken from the same slide.
Hustedt's description in op 98, p 480, t 40/l8-19, is based on
freshwater specimens from Java. Of these a number of (unmarked) specimens is
here included from slide Nal/74 "Java, R. Lamongan. Quelle 3. KI Qu 3b1.1
These show that both populations represent quite different taxa. This
applies also to the two specimens discussed by Hustedt in op 108, p 137,
f 320-321, which are also presented here from slide 397/39a "Celebes. 71.
Mahalone-See. 1." These latter specimens are marked (finder positions
289.5 and 412,5) and named.
40-18 Nitzschia naviculaeformis Hustedt Plate 96/7
op 40, t 348/27.
Validating description: Valvae lanceolatae, naviculiformes, apicibus
rotundatis, non protractis, longitudine circ.
20 urn, latitudine 4 um.
All efforts to locate specimens of sufficiently similar outline, size,

78
or structure have been without success. It is therefore impossible to
present here a type of any sort.
40-19 Nitzschia amphibia var. pelagica Hustedt Plate 101/8-13
op 40, t 348/48-51.
Validating diagnosis: A typo differt planctico modo vitae.
Since no marked or named specimens exist, the following is here proposed
as lectotype:
220/13. Victoria See.
The taxon is fairly frequent, particularly on Surirella valves.
40-20 Nitzschia capitellata Hustedt Plate 103/6-13
Op 40, t 348/57-59.
Description in op Jl, p 414, f 792.
The taxon is nowhere marked or named. A very extensive search among the
hundreds of slides labelled "Bremen" remained inconclusive. Therefore
recourse was had to the slides from "Kiathanebach'J the second locality
given in the protologue. The following slide is here proposed as lectotype:
62/l. Kiathane Bach. Bosporus.
Specimens were located at the following finder positions: 288.8; 313-7j
317.7; 382.5; 398.6; 412.1; 467-1; 529.2.
N.B. In an earlier paper (Lange-Bertalot & Simonsen, Bacillaria 1,
p 22, f 47-50, 1978) I wrote that I found some valves with and others
without central nodule, partly in the same frustule. This is an error and
partly due to contaminations and partly also to the technical facilities
which at that time were worse than now. Figure 50 in the cited paper
represents a taxon which does not belong here at all, namely N. palea (Kutzing)
W. Smith. In all other specimens the presence of a central nodule is
consistent.
40-21 Nitzschia subacicularis Hustedt Plate 97/7-14
Op 40, t 348/76.
Description in op 98, p 490, t 41/12.
No specimens of this taxon were ever marked or named by the author, except
on a slide from El Salvador mounted in 1955- This latter slide (Wl/67.
"Lago Ilopango, El Salvador 152") was designated as neotype by
Lange-Bertalot & Simonsen (Bacillaria 1: 50, f 124-125, 1978). More extensive search
has now revealed specimens from Lake Tanganyika which must represent the
taxon illustrated by Hustedt. The relevant slide was re-labelled with
newer labels, but the mounting date (4 Oct. 1913, Styrax) was noted by
Hustedt. A comparison showed that on this day the other slides from the
3rd Tanganyika Expedition were also mounted, so that there remains little
doubt that this is a slide with type material. It is here now proposed
as lectotype:
W3/58. Tanganyikasee.
The taxon is not rare, though not frequent, either. Our specimens are from
the following finder positions: 219.6; 224.2-5; 368.2; 459-8; 460.6;
465.4-5; 496.1; 584.6-9.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei>rambler.ru
79
N.B. None of these lectotype specimens has a central nodule, so that
the above-mentioned and now superseded neotype and virtually all other
records of Hustedt (op 98, p 490; op 155, P 127; op 157, P 357; op 162,
p 100) cannot be connected with this taxon.
40-22 Nitzschia planctonica Hustedt Plate 102/22-28
Op 40, t 348/77-80.
Validating diagnosis: A Nitzschia curvilineata Hustedtii valvis linearibus
differt.
The taxon was not marked or named by Hustedt. The following slide is here
chosen as lectotype:
43/3- Golf v. Siam.
Specimens were found at finder positions 197.2 (several), 261.2-5 and 314.1
Isolectotypes, also with unmarked specimens:
43/4. Golf v. S iam. 43/7. Golf v. Siam.
Finder: 165.8-9. Finder: 586.2 and 705-3-6.
N.B. Also these specimens belong into the variability range of
Nitzschia bicapitata Cleve, see the remarks at tx 40-17.
40-23 Nitzschia subacuta Hustedt Plate 104/1-6
Op 40, t 348/81-83.
Validating description: Valvae anguste lanceolatae, apicibus subacutis,
non vel vix protractis, 30-80 (vel plus) nm longae,
3-4 wm latae.
In the absence of marked or named specimens, the following is selected
as lectotype:
43/75- Neu-Guinea. C 3-
The taxon is not rare; the specimens shown here were located at finder
positions 318.5; 349-4; 433.8; 490.1-2; 499-7 (?); 558.7-8.
40-24 Nitzschia liebetruthii var. siamensis Hustedt Plate 103/14-19
op 40, t 348/88-91.
Description included in plate explanation.
No specimen is marked or named by the author. Therefore the following is
taken as lectotype:
43/19. Golf. v. Siam.
The material was calcinated on the cover slip. Therefore two rather large
clusters of the taxon are aggregated at finder positions 497-1-2 and
622.6-9.
40-25 Nitzschia tenuistriata Hustedt Plate 10l/l4-l6
Op 40, t 348/92-93.
Validating description: Valvae lanceolatae apicibus non protractis, rotun-
datis, circiter 20 nm longae. Nodulus centralis
conspicue longus. Striae invisibiles.

80
This taxon, not marked or named, is rather rare. On the following slide
two specimens were found, for which reason it is here proposed as lecto-
type:
43/75. Neu-Guinea. C 3.
Finder: 3U-7; 589*1.
N.B. All trials to resolve the striae in LM were unsuccessful.
Op. 41. A. Schmidts Atlas der Diatomaceenkunde, Heft 89, t 353-356, 1922.
Note on op 41:
The date of publication given on the explanations accompanying the four
plates is "Juni 1922". This is in contradiction with the date given as
"June 1924" in Hanna's Index (1969, page v). However, there is a list typed
by Hustedt in which all his publications are recorded, and in this list
the year 1922 is emphasized by an exclamation mark ("19221"). - On the
other hand, in a few cases, we found taxa described by Hustedt in this
instalment only on slides which were mounted in 1924-
41-1 Surirella subrobusta Hustedt Plates 104/7, 105/1-2
Op 41, t 353/1.
Validating description: Valvae heteropolae, elliptico-lanceolatae, cum
spina lamelliforme in polo capitalis, circiter
140 urn longae, c. 53 u™ latae.
Holotype:
X4/59. Lafirio-Fluft. Deutsch-O-Afrika.
Marked specimens named on label-.
Finder: 196.7-8; 280.1-4; 320.6-9; 414-1-4; 497-1; 504-3; 707-7.
41-2 Surirella spiraloides Hustedt Plates 106/1-4, 107/1
Op 41, t 353/2-3-
Description in op 111, p 507-
There are three slides in the collection, all with picked specimens named
on the labels. Of these the following is chosen as lectotype:
X4/45- Tanganika See. 6.
Isolectotypes:
X4/46. Tanganika See. 6.
X5/79. Tanganikasee. 6.
The latter slide was mounted in 1949, i.e. after the publication.
41-3 Surirella sparsipunctata var. laevis Hustedt Plate 107/2
Op 41, t 353/4.
Description in op 11, p 517 -
There is only one slide in the collection bearing the taxon's name on the
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
81
label, a single mount. It is from the type sample but was mounted in 1924.
This slide is here designated as lectotype:
X4/34- Tanganikasee. 6.
41-4 Surirella latecostata Hustedt Plate 108/1-2
Op 41, t 353/5-7.
Description included in plate explanation, see also op 111, p 504-
Of the two slides with the taxon's name on the labels, both single mounts,
the following is taken as lectotype:
' X2/70. Tanganyika See.
(I-type f 5)-
Isolectotype:
X2/71. Tanganyika See.
(I-type f 7).
41-5 Surirella gradifera Hustedt Plate 109/1-3
Op 41, t 353/8-9.
Description in op 111, p 501.
No contemporaneous slide with marked or named specimens exists. Since a
lectotype has to be selected, it may as well be a slightly younger (1924)
slide, a single mount, with the taxon's name on the label:
X2/57- Tanganikasee. 6.
Another, „ unmarked, specimen was found on the following slide and may serve
as isolectotype:
224/71. Tanganikasee. 6.
Finder: 468.6-9.
41-6 Surirella lancettula Hustedt Plates 108/3-5, IO9/4
Op 41, t 354/1-2.
Description in op 111, p 505-
There is one contemporaneous slide with one picked specimen named on the
label (along with specimens of tx 41-14), and this specimen, though not
illustrated by Hustedt, is nevertheless the holotype:
X7/58. Tanganikasee.
There are three further slides, all younger, with picked specimens which
must be considered as lectotypes:
X2/67- Tanganyikasee. 6.
X2/68. Tanganyikasee. 6.
X2/69- Tanganyikasee. 6.
41-7 Surirella reicheltii Hustedt Plate 110/1-3
Op 41, t 354/3-5-
Description in op 111, p 501.
Of the two contemporaneous slides, both with picked specimens named on
the labels, the following shall be the lectotype:

82
X3/69. Tanganyika See.
Isolectotype:
X3/71. Tanganyika See.
A valve in girdle view, probably i-type of f 3-
41-8 Surirella vasta Hustedt Plate 11l/l-3
Op 41, t 354/6-7.
Description in op 108, p 158 (under S. horrida), also in op 111, p 503.
There are four contemporaneous slides, all single mounts properly named.
The following may serve as lectotype:
X4/89. Tanganyika See.
Isolectotypes:
X4/90. Tanganyika See. 6.
X4/92. Tanganyika See. 6.
X4/93' Tanganikasee.
41-9 Surirella raargaritifera Hustedt Plate 112/1-2
Op 41, t 354/8.
Description in op 111, p 503; also mentioned in op 173, P 406.
No contemporaneous slide with marked or named specimens exists. There are
two younger (1924, 19^7) slides of which the older and better one is here
taken as lectotype:
X2/85. Tanganikasee. 6.
A slide with two picked specimens, named on the label: "Surirella margari-
tifera Hust. = S. aculeata Hust."
Isolectotype:
X2/86. Tanganikasee.
A single mount labelled like the preceding one.
41-10 Surirella aculeata Hustedt Plates 112/3-4, H3/l
Op 41, t 354/9, 355/1-
Description in op 111, p 503.
There are three contemporaneous slides with picked specimens, named on
the labels. The following is chosen as lectotype:
XI/l. Tanganyika See.
Isolectotypes:
Xl/2. Tanganyikasee.
XI/3. Tanganyika See.
224/91. Tanganyika See. Grund. 6, 2.
This latter is a strewn slide with a marked, unnamed specimen at finder
position 462.5-8.
41-11 Surirella heidenii Hustedt Plates 113/2-4, 114/1-3
Op 41, t 355/2-4.
Description included in plate explanation; see also op 111, p 502.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
83
There are five slides with picked and properly named specimens of which
four were made prior to the publication of op 41 • Of these latter the
following is taken as lectotype:
X2/58. Tanganyika See.
A single mount with the i-type of f 2.
Isolectotypes:
X2/59- Tanganyika See. 6.
X2/61. Tanganyika See.
.X7/57- Tanganikasee.
X2/60. Tanganikasee.
'This latter is a younger (1927) single mount.
41-12 Surirella acuminata Hustedt Plate 115/1-5
Op 41, t 355/5-6. .
Description in op 111, p 501.
Holotype:
Xl/7. Tanganyika See. 6.
A mount with three picked valves, among them the i-types of f 5 and 6.
Name on the label.
There are two further slides, both with picked specimens named on the
labels which are younger than op 41:
Xl/5. Tanganika-See. 6.
XI/6. Tanganikasee.
41-13 Surirella fuellebornii var. tumida Hustedt Plate ll6/l-2
Op 41, t 355/10.
Description in op 111, p 596.
Holotype:
X6/63. Tanganyika See.
A single mount with name on the label.
41-14 Surirella subcontorta Hustedt Plates 117/1-2, 118/1
Op 41, t 356/1-2.
Description in op 111, p 518.
There are three slides, all with picked specimens named on the labels.
As lectotype is proposed:
X4/57. Tanganyika See.
Isolectotypes:
X7/59. Tanganikasee.
X7/58. Tanganikasee.
41-15 Surirella debesii Hustedt Plates 118/2, 119/1-2
Op 41, t 356/3-4.
Description in op 111, p 518.
There are several contemporaneous slides with marked specimens. Some of

84
these (the X-slides) contain picked specimens named on the labels. As
lectotype is selected:
X7/59- Tanganikasee.
The specimen enclosed is perhaps the i-type of f 3-
Isolectotypes:
X2/l. Tanganyika See.
X2/3- Tanganikasee.
A mount from 1927 with several valves.
224/91. Tanganyika See. Grund. 6,2.
Markedj unnamed specimen.
Finder: 441.4-5*
224/92. Tanganyika See. Grund. 6,2.
Marked, unnamed specimen.
Finder: 408.6-9-
41-16 Surirella rudis Hustedt Plate 120/1-3
Op 41, t 356/5-6.
Description in op 98, p 505; also op 111, p 519-
Holotype:
X4/3- Tanganyika See.
Two picked valves, the illustrated ones.
A slightly younger (June 1922) slide contains another single valve:
X4/2. Tanganika see.
N.B. On both slides the name label reads: "Surirella rudis Hust. =
S. Terryi Ward,"
41-17 Surirella striolata Hustedt Plate 12l/l-3
Op 41, t 356/7.
Description in op 62, p 249; also in op 111, p 516.
There is a marked, though unnamed, specimen, not the i-type, on the
following contemporaneous slide which is proposed as lectotype:
224/92. Tanganyika See. Grund. 6,2.
Finder: 408.6.
Isolectotype:
X4/56. Tanganika See. 6.
A mount with two picked specimens, made 1924, named on the label.
Op. 46. Die Bacillariaceen-Vegetation des Sarekgebirges. Naturwiss. Unters.
d. Sarekgeb. in Schwed.-Lappland 3 (Dot.), 525-626, 1924-
46-1 Eunotia papilio forma minor Hustedt Plate 122/1-4
Op 46, p 543, t 18/21.
The Taxon is nowhere marked or named. As lectotype is proposed the
SCANNED MJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei>rambler.ru
85
following slide on which this diatom is not infrequent:
48/48. Sarekgebirge. Hutte Sakokspitz. Schlamm. 2.
This is sample no. 113 in op 46, p 530, which is quoted in the proto-
logue.
46-2 Eunotia pseudopectinalis Hustedt Plate 122/5-10
Op 46, p 547, t 18/1.
Since no marked specimens exist, the following slide is designated as
lectotype. The slide is with blank labels. The record sheet says, "Bach
ostlich der Hutte, an Moos. 13*7.1907." Our taxon is there recorded as
"Eunotia pectinalis, h! Hornchen vor den Polen!!" The h stands for "haufig"
(=frequent). This is in very good accordance with the occurrence of Eun.
pseudopectinalis. The slide number is 47/14-
46-3 Eucocconeis lapponica Hustedt Plate 123/1-10
Op 46, p 549, t 17/8-9.
The taxon is nowhere marked or named. Among the localities cited in the
protologue a slide from the following is proposed as lectotype: "Plateau
ostl. v. Laddepakte, an Felsen. 1.8.07. 136." This is sample no. 8l (136)
cited in the material section of op 46 (p 529) and the first one in the
protologue. The slide has number 48/H, its labels are blank. The locality
cited in quotation marks above is taken from the record sheet. - The taxon
is not infrequent on the slide.
N.B. In op 79, p 414, Hustedt transfers this taxon to Achnanthes.
The late Max Moller of Odense, Denmark, could show to Hustedt as well as
to me that this taxon is conspecific with Cocconeis quadratarea 0strup
(Danske Diatomeer, p 124, t 3/77, 1910) of which Hustedt already suspected
that it would be better placed in Achnanthes (op 79, p 363). Moller did
unfortunately not live long enough to publish the results of his
investigations of 0strup's material. I can confirm, however, that Hustedt accepted
and acknowledged the evidence. The correct specific epithet and combination
would then be Achnanthes quadratarea. To my knowledge this has first been
used, though in a confusing way, by Moller's friend Nils Foged (Freshwater
diatoms in Ireland, Bibl. Phycol. 34, p 25, 1977), also giving M. Moller
the authority of the combination. Therefore the proper denomination of
our taxon is Achnanthes quadratarea (0strup) Max Moller ex Foged. - The
re-combination with Achnanthes was also made by R, Ross (in B. Hartley,
J. mar. biol. Ass. U.K. 66, p 606, 1986), but since it is younger, the
authority of Moller has priority.
I may here point to the fact that the rapheless valve has a unilateral
central area reaching the margin. This has so far not been observed except
by M. Moller and myself, but was never published.
46-4 Navicula heufleriana var. septentrionalis Hustedt Plate 122/11-12
Op 46, p 556, t 17/4.
Holotype:
48/10. Sarekgebirge. 131. Laddepakte, SO Plateau. Tumpel. 1.8.07.
The specimen, the iconotype, is neither marked nor named, finder: 613-4-7.

86
N.B. In op 170, p 151, f 1283 Hustedt raises this taxon to species
rank under the name Navicula medioconvexa Hustedt (not "nov. spec" as
quoted there), see also tx 170-21.
46-5 Navicula soehrensis var. septentrionalis Hustedt Plate 123/11-12
Op 46, p 560, t 17/3.
The taxon is not marked nor named in the records. We found a specimen on
the following slide which is therefore adopted as lectotype:
47/96. Sarekgeb. 95. Sumpf S vom Stuor Jarta. 22.7.07.
Finder: 549.1.
N.B. In op 171, p 214, f 1331a-d, Hustedt includes this taxon in the
species, Navicula soehrensis Krasske.
46-6 Navicula hambergii Hustedt Plate 123/13-l8
Op 46, p 562, t 17/2.
Holotype:
48/73. Sarekgebirge. Hiitte-Sakokspitz, Schlamm 11.
Marked, unnamed specimens.
Finder: 256.1-2; 310.8 (2 specimens); 311.4; 317-3; 322.4-5; 381.4-5-
N.B. In op 114, p 281, Hustedt corrects the strial density which should
be 20 in 10 |xm. Also in op 114, p 282, Hustedt synonymizes tx 84-42 Nav.
quadripartita Hustedt with and includes it in Nav. hambergii.
46-7 Stauroneis obtusa var. lapponica Hustedt Plate 123/19-21
Op 46, p 563 (no illustration).
Hustedt refers to A. Cleve-Euler, Bih. K. Svenska Vet.-Akad. Handl. 21,
Afd. Ill (2), f 6, 1895.
Holotype:
Na2/37- Sarekgebirge 32. Kleiner Abflufi. 14.7.07.
Marked, unnamed specimens (slide in the "Stauroneis box").
Finder: 379-5-6; 408.4-7; 410.7; 492.6.
N.B. Strictly speaking the above slide cannot be considered as type,
because Hustedt refers to Cleve-Euler's f 6 in Lule Lappmark (1895) which
is there intended to represent Stauroneis obtusa Lagerstedt. - In op 166,
p 815, f 1160, Hustedt combines this taxon with Staur. javanica (Grunow)
Cleve: St. javanica var. lapponica (Hustedt) Hustedt.
46-8 Frustulia styriaca var. subrostrata Hustedt Plate 124/1-4
Op 46, p 565, t 17/5.
Holotype:
47/100. Sarekgebirge. 101. SO v. Stora Jarta. Sumpfloch. 23.7.07.
Unmarked specimens named on the record sheet with a set of coordinates.
N.B. In op 166, p 754, Hustedt synonymizes this taxon with and includes
it in Anomoeoneis styriaca (Grunow) Hustedt.
SCANNED 6 SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
87
46-8a Pinnularia undulata forma stauroneiformis Hustedt
Op 46, p 565, t 19/16 (no description).
Hustedt did evidently not intend to introduce this name as a separate
taxon, otherwise he would certainly have given a description. He simply
meant by this name - a technical term rather than a name - individuals
of the species Pinnularia undulata Gregory possessing a fascia. This is
confirmed in op 71, P 315, f 565a-b, where the same two figures published
in op 46, t 19/16 and 17, are presented under the specific epithet, and
the description there comprises fasciate as well as non-fasciate specimens.
>
i
46-9 Pinnularia interrupta var. minutissima Hustedt Plate 124/5-8
Op 46, p 566 (no illustration).
Holotype:
48/18. Sarekgebirge, 148. Sumpf-Quelle. 2.8.07-
Unmarked specimens - the taxon is rather frequent - named on record sheet.
46-IO Nitzschia regula var. robusta Hustedt Plate 124/10-14
Op 46, p 586 (no illustration).
Holotype:
49/15. Sarekgeb. Parekjaure, auf Steinen. 18/7.
Marked specimens named on record sheet.
Finder: 490.5-6; 523.2-5; 579-9; 642.1.
N.B. The specimens at 523-2-5 and 642.1 have Hantzschia symmetry,
i.e. the raphe of both valves of a frustule is on the same side.
46-H Surirella lemmemiannii Hustedt Plate 124/9
Op 46, p 587, t 17/1-
Holotype:
Na2/37. Sarekgebirge 32. Kleiner Abflufi. 14.7-07.
Marked specimen named on label.
Finder: 345-8-
N.B. On the slide label Hustedt noted: "Surirella lemmermannii Hust.
= S. costulata Hust. (verschleppt aus Sgei Sangatta)". See taxon 14-13-
Op. 47- A. Schmidts Atlas der Diatomaceenkunde, Heft 88, t 349-352, 1924-
47-1 Nitzschia fonticola var. pelagica Hustedt Plate 125/1-9
Op 47, t 349/15-16.
Description included in plate explanation; see also op 71, P 415-
Holotype:
W6/8. Gr. Eutiner See. 6.10.21.
The taxon is very frequent, unmarked, named "Nitzschia" on the label.

88
The taxon's name appears on the following slide on which many unmarked
specimens occur:
W3/38. Pribbernower See, Pommern.
This slide was mounted in 191,3, the sample is discussed in op 119, p 407,
and in the continuation of this the taxon is also illustrated (op 126,
t 41/25-26).
47-2 Nitzschia plana var. americana Hustedt Plate 125/10-11
Op 47, t 349/43-44.
Validating diagnosis: Differt a varietate nominata valvis linearibus
longioribusque, usque ad vel plus quam 226 um.
Of the two single mounts with the taxon's name on the labels the following
is considered as the lectotype:
Wl/25. Lake Champlain. N.A. (N.A. = Nordamerika)
This is the i-type of f 43•
The other slide:
Wl/26. New-York,
The i-type of f 44.
47-3 Nitzschia plana var. fennica Hustedt Plate 125/12—13
Op 47, t 349/45.
Description in Cleve-Euler, Kgl. Svenska Vetskakad. Hdlgr, ser. 4, 3 (3),
P 61, 1952.
The name of this taxon appears on the label of one contemporaneous slide
only, but that is from Lake Champlain (slide no. W4/83)- On the record
sheet of the following slide, mounted December 1923, Hustedt also uses
this name, and this slide is selected as lectotype:
85/28. Viborg 2b. Sannalahti Busen.
The taxon is not marked, but the ten or so specimens are easily found due
to their size. We found valves, e.g. at the following finder positions:
438.2; 472.6; 521.8; 533.7.
47-4 Nitzschia abbreviata Hustedt Plate 126/1-10
Op 47, t 349/46-48.
Validating description: Valvae ellipticae usque ad lanceolatae, apicibus
rotundatae, cum nodulo central!, 10-20 um longae,
circiter 2 um latae.
Holotype:
224/75. Tanganikasee. 6.
One marked (along with tx 47-10), unnamed specimen, the others presented
here are unmarked.
Finder: 675.5-
47-5 Nitzschia amoena Hustedt Plate 126/11-12
Op 47, t 351/5.
Validating description: Valvae in media parte amoene constrictae, apicibus
non protractis, rotundatis, circiter 176 urn longae,
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
89
21 um latae.
Holotype:
Wl/56. Miang Besar. Borneo.
A single mount named on the label.
47-6 Nitzschia gladiiformis Hustedt Plate 126/13-14
Op 47, t 351/6-7 ("gladiformis").
Validating description: Valvae lineares apicibus rotundatis, non
protractis, longitudine circ. 140-170 um, latitudine
15-17 ujn.
Holotype:
W2/24. Riouw bei Singapore.
This is a slide with picked specimens mounted by E. Debes. It contains
a number of Nitzschia valves, among them the two ones illustrated by
Hustedt.
47-7 Nitzschia holsatica Hustedt Plate 127/1-10
Op 47, t 351/14-15.
Description in op 71, p 416, f 803.
Holotype:
W2/100. Heidensee. PI. 3.5-1922.
The taxon is abundant, not marked, named on the label.
N.B. There are obviously two different populations on the slide which
is also indicated by Hustedt's drawings. One consists of long cells with
rather distant central fibulae and a much shorter population in which the
central nodule is only occasionally distinct. This was also discussed in
Lange-Bertalot & Simonsen (Bacillaria 1, p 36, 1978).
Whilst the structure of the longer valves is too delicate for LM
resolution, two evidently somewhat coarser valves of the shorter population
permitted a count of about 43 striae in 10 um. Unfortunately the material
is mounted in Styrax.
47-8 Nitzschia subregula Hustedt Plate 128/1-5
Op 47, t 351/16-17.
Validating diagnosis: Differt a Nitzschia regula Hustedtii valvis magis
angustioribus heteropolaribusque.
Holotype:
224/60. Tanganikasee. 5 ob.
Marked, unnamed specimens, both in the same circlet.
Finder: 431-9.
The taxon is not rare, a few additional unmarked specimens are here shown.
N.B. Note the radial terminal striae which remained unnoticed by
Hustedt. Another phenomenon is the evident tendency of forming slightly
heteropolar valves with different apices. Thus the species appears to
approach the genus Gomphonitzschia Grunow, which, by the way, shows the
same radial inclination of the terminal striae. Hustedt's statement that
this taxon is related with N. regula Hustedt (see tx 36-35) is purely
speculative and far from the real situation.

90
47-9 Nitzschia anfiustissiaa Hustedt
°P 47, t 352/4. P1ate 128/6-11
Validating description: Valvar h„
tractis, rotundatiT T- J"*' aPlci>>us non pro-
66/87. ^ ^;;:xned0.
^.j ^.j (am, circ. 37 striae in 10 urn.
There are marked, unnamed specimens on four slides. Of these the following
may serve as lectotype:
66/87. Miang Besar. Borneo.
Finder: 608.5-6.
Isolectotypes:
66/88. Miang Besar. Borneo. 66/89. Miang Besar. Borneo.
Finder: 500.5-6. Finder: 467-4 (2 specimens).
66/90. Miang Besar. Borneo.
Finder: 376.1.
N.B. In op 159, p 173, Hustedt gives this taxon a new name, Nitzschia
macera Hustedt, because of N. angustissima Van Heurck.
Hustedt evidently failed to resolve the striation which we found to
amount to only 37 striae in 10 um.
47-10 Cymbellonitzschia minima (genus novum et species nova) Hustedt
Plate 128/12-20
Op 47, t 352/12-13.
Description included in ,plate explanation.
Holotype:
224/75* Tanganikasee. 6.
Marked, unnamed specimen.
Finder: 675-5 (i-type f 12?).
A few more micrographs of this rather rare diatom are here included,
these specimens are unmarked.
N.B. Although the raphe is normally on the curved - dorsal ~ side,
two fragments were found with the raphe along the straight - ventral -
side which may indicate that also nitzschioid symmetries may occur in this
species.
Op. 48. Bacillariales aus Schlesien. II. Intern. Rev. ges. Hydrobiol.
13, 337-349, 1925.
48-I Caloneis schumanniana var. fasciata Hustedt Plate 129/1-5
Op 48, p 347, f 2.
Holotype:
14/24. Ogglischmuhlen-See. Grund, Ausflufi. 20/7-21.
Unmarked specimens named with one set of coordinates on record sheet.
Finder: 348.7 (i-type); 585-4-5-
Both specimens are in very oblique position.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
91
Isotype:
14/25. Ogglischmiihlen-See. Grund, am Ausfluft. 20/7.21.
Unmarked specimen.
Finder: 550.6-9-
48-2 Cymatopleura solea var. angusta Hustedt Plate 129/lO-H
Op 48, p 347, f 1-
Holotype:
14/6. Schlawasee, an Fontinalis. 19-7-21.
* Unmarked (very oblique) specimen named with coordinates on record sheet.
Finder: 38O.4.
48-3 Navicula bicapitellata Hustedt Plate 129/14-16.
Op 48, p 349, f 3-
Holotype:
N4/91■ Schlawasee bei Laubegast. 19-7-21. 2-4 m.
Marked specimen named on label.
Finder: 549-7-8.
N.B. In op 114, p 28l, Hustedt synonymizes this taxon with and includes
it in Navicula grimmei Krasske. See also op 175, p 769, f 1742.
48-4. Navicula laterostrata Hustedt Plate 129/6-9
Op 48, P 349, f 4-
Lectotype:
N4/91• Schlawasee bei Laubegast. 19.7*21. 2-4 m.
Marked specimen - not the i-type - named on label.
Finder: 490.4-5*
Further, unmarked, specimens were found on the following slide with
material which is also cited in the protologue:
14/22. Hammer-See. Grund. 20.7.21.
Finder: 519*6; 525*2.
Op. 49. Contribution ("Anhang", p 317-341) in: H. Jarnefelt, Zur Limnologie
einiger Gewasser Finnlands. Ann. Soc. Zool.-Bot. Fenn. Vanamo 2,
185-352, 1925-
49-1 Campylodiscus levanderi Hustedt Plate 130/1-4
°P 49, p 328 (no illustration).
Description in op 117, p 949, t 38/8-9; see also op 75, p 543 (no ill.).
There is one slide with material from one of the original localities which
must be considered as the holotype:
Zl/87. Lojosee, Finnland.
This is a mount with three picked valves.

92
49-2 Eunotia septentrionalis var. bidens Hustedt Plate 129/12-13
Op 49, p 334 (no decription, no illustration).
Description without illustration in op 78, p 292 (with no indication to
the original "mention" in the list of op 49).
The taxon is nowhere marked or named. Among the slides with material from
the type locality the following is proposed as lectotype:
74/49. Tuohilampi-See, 2 m, 27.5-22. Finnland.
The taxonis rather rare; the photographed specimens were found at finder
positions 491*5 and 521.1.
Op. 50. Bacillariales aus den Salzgewassern bei Oldesloe in Holstein. Mitt.
Geogr. Ges. u. Naturhist. Mus. Liibeck (ser. 2) 30, 84-120, 1925.
50-1 Chaetoceros thienemannii Hustedt Plate 131/1-2
Op 50, p 104, f 16-22.
Holotype:
Ga/14. Oldesloe, Holstein,
The taxon occurs almost purely and in masses; no specimen is marked, the
name is on the label. This is an air mount, evidently made of the plankton
sample from 0 IV of 28.6.1924, of which there exists another dry mount
with the number 144/52.
N.B. In op 71, p 117, and also in op 72, p 757, Hustedt includes this
taxon in Chaetoceros muelleri Lemmermann.
50-2 Fragilaria construens var. subsalina Hustedt Plate 131/3-8
Op 50, p 106, f 5-8.
As lectotype is here taken:
144/4. Oldesloe, Holstein. 1,2. 15-7-22.
The taxon occurs in great quantities, named on record sheet.
50-3 Navicula cryptocephala var. subsalina Hustedt Plate 132/1-3
Op 50, p 110, f 10.
This taxon is not marked. As lectotype is chosen:
144/3. Oldesloe, Holstein. 1,1. 15-7-22.
The taxon is not rare, it is noted as "N. cryptocephala var. nov." on the
record sheet.
N.B. In op 71, p 295, Hustedt includes this taxon in Navicula
cryptocephala van. veneta (Kiitzing) Grunow.
50-4 Amphora holsatica Hustedt Plate 132/11-16
Op 50, p 115, f 4.
The taxon is not marked. In the records it appears as "Amphora n. spec",
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
93
e.g. for the following slide which is here taken as lectotype:
144/15. Oldesloe. 1,5- Holstein. 25-7.23.
Although the cover slip is too thick for high-performance objectives, this
slide is adopted because the taxon is more frequent on this than on other
slides.
50-5 Nitzschia frustulum var. subsalina Hustedt Plate 132/4-10
Op 50, p 118, f 13.
No marked specimens exist. The following slide is chosen as lectotype:
144/1. Oldesloe, Holstein. 1,1. 15-7.22.
The taxon is frequent, named on record sheet.
50-6 Navicula longirostris Hustedt Plate 132/17-26
Op 50, p 99 (only citation of name, no description), f 12.
Description in op 71, P 285, f 476.
No contemporaneous slide containing the type material exists. There is
only one slide - mounted 1929 in Hyrax - which is here proposed as
lectotype :
N5/1. Aus 9 %iger Soole.
The taxon is unmarked, very frequent, named on the label.
N.B. When mentioning this species on p 99 of op 50, Hustedt remarks
that he found this taxon on a slide among other discarded slides of the
Biological Station Plon. There is therefore a possibility that Hustedt
took this slide and re-mounted it in Hyrax. There is no unmounted material
in the collection, and only this slide exists.
Op. 51. Contribution (p 41-43) in: G. Schonfeld, Ein Torf- mid Kieselgur-
lager in den Seewiesen bei Dresden-Kaditz. Sitzungsber. Abh. naturwiss.
Ges. ISIS Dresden 1924, 40-44, 1925-
51-1 Navicula schoenfeldii Hustedt Plate 133/7-12
Op 51, P 43, f 1-2.
No slide older than 1928 exists in the collection. In op 126, p 353,
Hustedt remarks, "...habe ich Hyraxpraparate (statt der fruheren in Styrax
eingebetteten) aus dem Originalmaterial... hergestellt." This was evidently
in 1944, and evidently Hustedt discarded the old Styrax slides. For these
reasons a holotype is no longer available. Therefore the following slide
is proposed as lectotype:
N7/50. Kaditz, Dresden. Seewiesen. b.
The taxon is abundant, not marked but named on the label.
Op. 52. A. Schmidts Atlas der Diatomaceenkunde, Heft 90, t 357-360, 1925-

94
52-1 Surirella effusa Hustedt Plate 133/1-6
Op 52, t 357/1-2.
Description included in plate explanation; see also op 111, p 506.
There are three slides, all single mounts with names on the labels, of
which the following is taken as lectotype:
X2/9. Tanganyika See.
The i-type of f 1.
Isolectotypes:
X2/11. Tanganika See. 6. X2/10. Tanganyika See.
The i-type of f 2 and
a valve fragment.
52-2 Surirella modesta Hustedt Plate 134/1-4
Op 52, t 357/8-9.
Description included in plate explanation.
Of the two slides with picked specimens, both with name on the labels,
the following may serve as lectotype:
X2/87. Kamerun, Lagune.
A single mount, i-type of f 8.
Isolectotype:
X2/88. Kamerun, Lagune.
Three specimens, among them the i-type of f 9.
52-3 Mastogloia emarginata Hustedt Plate 134/5-7
Op 52, t 358/8.
Description in op 80, p 477, f 896.
Holotype:
66/89- Miang Besar. Borneo.
Ah unnamed specimen marked together with tx 47-9 and Nitzschia sigma forma
maxima Grunow.
Finder: 467.5,
N.B. The magnification of Hustedt's illustration must be xl500 and
not xlOOO as given in op 52.
52-4 Mastogloia subminuta Hustedt Plate 134/8
Op 52, t 358/9.
Validating description: Valvae minutae, ellipticae, apicibus rostratis,
circiter l6„5 um longae, 10 urn latae.
The taxon is not marked on any of the numerous slides from Miang Besar.
We can therefore not present any sort of type here.
N.B. In op 80, p 533, f 966, Hustedt synonymizes this taxon with and
includes it in Mastogloia corsicana Grunow.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqweS>rambl<
95
52-5 Orthoneis horrathiana var. robusta Hustedt Plate 135/1-3
Op 52, t 358/12.
Description in op 80, p 471, f 890.
Although not the i-type, there is a marked, unnamed specimen on the
following slide which may therefore serve as lectotype. This specimen is in the
same circle as tx 47-9=
66/88. Miang Besar. Borneo,
Finder: 500.2-5-
N.B. In op 80, p 471, Hustedt synonymizes this taxon with and includes
it in the species, Mastogloia horvathiana Grunow.
52-6 Surirella galapagensis Hustedt Plate 136/1-2
Op 52, t 359/1 ("galla...").
Validating description: Valvae plus minusve lineares, in media parte con-
strictae, apicibus late rotundatis, circiter
127 pm longae, in media parte circ. 44 pro latae.
Holotype:
X6/46. Galapagos Ins.
A single mount with the i-type, named on the label.
52-7 Surirella affinis Hustedt Plate 137/1-2
Op 52, t 359/4.
Validating description: Valvae lineares, apicibus semicirculares, non
protractis, circ. 134 pm longae, 15 pm latae.
Holotype:
X6/17. Puerto Cabello. Venezuela.
A single mount with the i-type, named on the label.
52-8 Surirella strigosa Hustedt Plate 138/1-4
Op 52, t 359/5-6.
Description in Salah, J. Roy. Microscop. Soc. 72, p 168, 1953.
Holotype:
X4/55. Schottland.
A slide with a number of picked specimens, among them the illustrated
valves. Name on label.
N.B. It is far from certain that Salah (loc. cit.) had Hustedt's taxon
before himself when he made his peculiar description. Such descriptions
of authors who did not see the original specimens must necessarily remain
problematic.
52-9 Surirella subhybrida Hustedt Plate 139/1-2
op 52, t 359/7.
Validating diagnosis: A Surirella hybrida Grunowii infundibulis incrassa-
tis differt.
The taxon's name appears on the labels of two single mounts. The following

96
shall be the lectotype:
X6/15. Pernambuco.
This is the i-type of f 7.
Isolectotype:
X6/14* Pernambuco.
52-10 Surirella taeniata Hustedt Plates 140/1-2, 14l/l-2
Op 52, t 359/8-9.
Validating diagnosis: Valvae magis majores quam Sur. arabica Grun., circ.
120-130 (am longae, 50-60 um latae.
Two slides with picked specimens named on the labels were found. Lectotype:
X6/51. Port Townsend.
The mount contains four valves, among them the two ones illustrated.
Isolectotype:
X6/52. Port Townsend. Am.
A mount with two picked valves.
N.B. The right-hand label of both slides reads in Hustedt's hand:
"Surirella taeniata Hust. = S. arabica var. taeniata Hust." This is a
combination never published before now.
52-11 Surirella nankoorensis Hustedt Plate 142/1-2
Op 52, t 360/1.
Validating description: Valvae latissime lineares, in media parte
constrictae, apicibus semicircularibus, circiter
180 urn longae, in media parte circ. 70 urn latae.
Holotype:
X6/53. Nancowry.
A single mount with the illustrated fragment, named on the label.
52-12 Surirella tropica Hustedt Plate 143/1-2
Op 52, t 360/3-
Validating description: Valvae latae, in media parte constrictae, apicibus
latissime rotundatis, circiter 180 urn longae,
circ. 55 M™ latae in media parte.
Holotype:
X6/55- Sudsee.
Single mount with the i-type.
N.B. The right label reads "Surirella tropica Hust. - S. macraeana
Grev." (in Hustedt's hand).
52-13 Surirella mediterranea Hustedt Plate 144/1-2
op 52, t 360/4-5.
Validating description: Valvae late lineares, in media parte modice
constrictae, apicibus rotundatis, circiter 94-104
urn longae, in media parte 37-48 urn latae.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaql
97
Holotype:
X5/98. Neapel.
A mount with the two illustrated valves, named on the label.
52-14 Surirella campechiana Hustedt Plate 145/1-2.
op 52, t 360/6.
Validating diagnosis: Surirellae americanae Terryi similis, sed circulum
(anglico "circlet" dicitur) centralem habet.
(Holotype:
tZtl/32. Campeche Bay.
This is a "Typenplatte", a mount with slightly more than l00 valves from
the locality lying in rows. Among them is the i-type. No list with names
exists. I have some doubt that Hustedt mounted this slide, although it
bears his (not contemporaneous) labels. The fact that no mounting date
is given supports the assumption that he himself did not mount this slide.
Op. 53. A. Schmidts Atlas der Diatomaceenkunde, Heft 91, t 36I-364, 1925-
53-1 Surirella toamasinensis Hustedt Plate 146/1-2
Op 53, t 361/1.
Description included in plate explanation.
Holotype:
X6/30. Tamatave.
A single mount with the illustrated specimen named on the label.
53-2 Surirella solida Hustedt Plate 147/1-2
Op 53, t 361/3-4.
Description included in plate explanation.
Of the two slides with the taxon's name on the labels, both with picked
specimens, the following is selected as lectotype:
X5/21. China.
A mount with the i-type of f 4 and two other Surirella valves.
Isolectotype:
X5/20. China.
Single mount with the i-type of f 3.
53-3 Surirella imperfecta Hustedt Plate 148/1-2
Op 53, t 361/5.
Validating diagnosis: A Surirella hybrida Grunowii infundibulis rudimen-
tariis differt.
Holotype:
X6/18. Bass-Strasse.
A single mount with the i-type.

98
53-4 Surirella karstenii Hustedt Plates 149/1-3, 150/1-2
Op 53, t 361/6-7.
Description included in plate explanation.
Holotype:
X2/64. Mekong.
A mount with six picked valves, among them the ones illustrated, named
on the label.
53-5 Surirella elgeri Hustedt Plate 150/3-5
Op 53, t 362/7-9-
Validating description: Valvae lineares ad elliptico-lanceolatae, apicibus
rotundatis, in media parte nonnunquam leviter
constrictae, circiter 55-73 urn longae, circiter
15-19 urn latae.
The taxon's name appears on the labels of three slides with picked
specimens. Lectotype:
X2/14. Fagula, Samoa.
Isolectotypes:
X2/13. Fagula, Samoa.
X2/12. Fagula, Samoa.
53-6 Surirella wetzelii Hustedt Plates 15l/l-3, 152/1-2
Op 53, t 363/1-3.
Description in op 62, p 249, t 9/1-2.
Holotype:
X4/100. Calama, Chile.
A slide with four picked valves, among them the three specimens
illustrated. Named on the label.
Isotypes:
X4/99- Calama, Chile.
X4/98. Calama, Chile.
Both slides with picked specimens named on label. These slides were mounted
in 1925.
53-7 Surirella marginestriata Hustedt Plate 152/3-6
Op 53, t 363/4-6.
Validating description: Valvae lanceolatae apicibus anguste rotundatis,
circiter 50-65 um longae, 10-12 urn latae, margi-
naliter striatae.
We have been unsuccessful in finding marked specimens on contemporaneous
slides. Since the taxon has to be lectotypified, two younger (1928) slides
with picked specimens, named on the labels, must be considered. Of these
the following shall be the lectotype:
XI/29. Brasilien.
Isolectotype:
XI/30. Brasilien.
Both slides contain quite a number of picked valves.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe*':
99
53-8 Surirella sella Hustedt Plates 153/1-2, 154/1-3
Op 53, t 363/7.
Description included in plate explanation. See also op 62, p 249, t 9/5-
Of the two contemporaneous slides with picked specimens, both with name
on the labels, the following is designated as lectotype:
X4/7. Calama, Chile.
Four valves, among them the one illustrated.
Isolectotype:
X4/8. Calama, Chile.
Two further valves.
N.B. The magnification given by Hustedt is grossly incorrect. The
length of the illustrated valve is in reality 175um and not 93 um. The
factual magnification of the drawing thus approaches the value of x580
(really x530), a standard magnification used by Hustedt. Hustedt's
magnifications are rarely very exact, and a fairly wide error margin must often
be allowed.
53-9 Surirella seychellarum Hustedt Plate 155/1-3
Op 53, t 363/10, 364/6.
Validating diagnosis: Surrirellae ceylanensi Leud.-Fortm. similis, sed
infundibulis leviter crassioribus circuloque ali-
quanto latiore.
There are two slides with picked specimens named on the labels. Lectotype:
X6/80. Seychellen.
Two picked valves, one the i-type of f 10.
Isolectotype:
X6/82. Seychellen.
Single mount with the i-type of f 6.
N.B. The text on the right-hand label of both slides reads in Hustedt's
hand: "Surirella seychellarum Hust. = S. ceylanensis Leud.-Fortm."
53-10 Surirella meisteri Hustedt Plate 156/1-2
Op 53, t 364/1-2.
Description included in plate explanation.
Holotype:
X6/16. China.
This is a mount with four picked valves, among them the illustrated ones.
Named on label.
53-11 Surirella seychellarum var. biseriata Hustedt Plate 157/1-3
Op 53, t 364/7.
Validating diagnosis: Differt a typo absentia areae inter duobus seriebus
areolarum centralium.
Holotype:
X6/81. Seychellen.
A mount with two picked specimens including the illustrated one. The label

100
reads in Hustedt■s hand: "Surirella seychellarum Hust. = S. ceylanensis
Leud.-Fortm." This indicates that Hustedt did not value his taxon very
highly.
Op. 54- Thalassiosira fluviatilis nov. spec, eine Wasserbliite im Weser-
gebiet. Ber. Deutsch. Bot. Ges. 43, 565-567, 1926.
54-1 Thalassiosira fluviatilis Hustedt Plate 158/1-6
Op 54, P 565, f 1-4.
Holotype:
Ad/54. Ober-Weser. 1925.
The taxon occurs purely, in masses, named on the label. This is an air
mount.
N.B. Rivera (Beitrage zur Taxonomie und Verbreitung der Gattung
Thalassiosira Cleve, Bibl. Phycol. 56, p 130, footnote, 1981) designates the
above slide as "lectotype". This makes no sense, because this is the only
slide existing with the type material (mounted 1925), and evidently Hustedt
must have investigated this very slide when describing the taxon. Therefore
the slide must be considered as the holotype.
Fryxell & Hasle (Nova Hedwigia, Beih. 54, 67-98, 1977) have shown that
this taxon is identical with Micropodiscus weissflogii Grunow for which
they introduced the new combination Thalassiosira weissflogii (Grunow)
Fryxell & Hasle.
Op. 57- Untersuchungen uber den Bau der Diatomeen. II. Koloniebildung bei
der. Gattung Pinnularia. III. Zur Anatomie der Triceratium-Membran. Ber.
Deutsch. Bot. Ges. 44, 394-402, 1926.
57-1 Pinnularia debesii Hustedt Plates 158/7-8, 159/1-3
Op 57, p 396, f 1-5, 8.
There are five slides from the type locality, all with picked specimens
named on the labels. Since the following slide appears to contain the
i-type of Hustedt's f 8, I select it here as lectotype:
Pl/75- Wedel, Holstein.
Isolectotypes:
Pl/76. Wedel, Holstein.
Pl/77. Wedel, Holstein.
The following two slides were mounted by E. Debes:
Pl/73. Wedel in Holstein.
"Pinnularia socialis Palm."
Pl/74- Wedel in Holstein.
"Pinnularia major forma socialis Palmer."
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
101
Op. 59- Die Diatomeen der interstadialen Seekreide. Contribution
(p 317-320) in: H. Gams, Die Geschichte der Lunzer Seen, Moore und Walder.
Intern. Rev. ges. Hydrobiol. 18, 305-387, 1927-
59-1 Cyclotella distinguenda Hustedt Plate 159/4-11.
Op 59, P 320, f 4.
Holotype:
Acl/l9a. Lunz. Pr. Dc. 6.
The taxon is abundant, not marked, named on label.
Op. 60. Bacillariales aus dem Aokikosee in Japan. Arch. Hydrobiol. 18,
157-172, 1927.
60-1 Eunotia tropica Hustedt Plate I60/1-2
Op 60, p 159, t 5/1.
Holotype:
166/97- Japan. Aokiko-See.
Unmarked, unnamed specimen.
Finder: 195.1-
N.B. In op 8l, t 38l/3-8, Hustedt introduces the new combination Eun.
monodon var. tropica Hustedt nov. comb.
60-2 Achnanthes gracillima Hustedt Plate 160/3-12
Op 60, p 161, t 5/10-11.
There are two contemporaneous slides with marked specimens named on the
label or index sheet. Lectotype:
N12/42. Japan. Aokiko See.
Finder: 290.4; 311.3; 318.6; 463.8-9; 466.1-4; 489-3-6.
Isolectotype:
Zt6/4. Japan, Aokiko See.
Finder: 369.2-3; 459-9-
A micrograph of a marked specimen (named on index sheet) from a Hyrax slide
mounted after the publication of op 60 may be included:
N19/10. Aokiko, Japan.
Finder: 409-5-6.
This latter specimen also permitted the resolution of the striae near
the centre in which Hustedt had not succeeded: 44 striae in 10 urn,
60-3 Achnanthes pinnata var. japonica Hustedt Plate 160/13-24-
Op 60, p 161, t 5/12-15.
The taxon is not marked or named on a contemporaneous slide. Since it is
not rare, the following slide is here - randomly - adopted as lectotype:

102
166/94- Japan. Aokiko See.
N.B. Note the variable structure of the rapheless valve which also
differs from that illustrated by Hustedt.
60-4 Navicula semenoides Hustedt Plate 160/25-27
Op 60, p 163, t 5/8.
Holotype:
N12/41• Japan. Aokiko See.
Marked specimen named on label.
Finder: 350.5-8.
This is an aggregate of three valves, one on top of the other.
60-5 Navicula brehmii Hustedt Plate l6l/l-6
Op 60, p 163, t 5/6.
Three contemporaneous (plus one younger) slides contain marked specimens
with names on their labels. The following is probably the i-type and may
therefore serve as lectotype:
N12/42. Japan. Aokiko See.
Finder: 562.7.
Isolectotypes:
N12/41. Japan. Aokiko See^ N12/95. Japan. Aokiko See.
Finder: 352.1. Finder: 344-3-
60-6 Navicula globulifera Hustedt Plate 161/7-8
Op 60, p 164, t 5/7.
Holotype:
Zt6/4. Japan. Aokiko See.
Marked specimen named on label.
Finder: 558.8.
60-7 Navicula subdicephala Hustedt Plate I61/9-U
Op 60, p 164, t 5/9.
The taxon is nowhere marked or named. Specimens of this not infrequent
diatom were found on the following slide which is here selected as
lectotype:
166/96. Japan. Aokiko See.
60-8. Pinnularia karelica var. japonica Hustedt Plate 161/12-13
Op 60, p 165, t 5/3.
I regret that we were unable to locate a specimen on a contemporaneous
slide. Both slides quoted below are mounted in Hyrax, whereas all other
slides from this locality were mounted in Styrax. The slides quoted below
are undated but were evidently mounted after the publication of op 60,
because Hyrax is a younger invention, the oldest dated Hyrax mounts in
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqweJirambler.ru
103
the collection being from 1929* Nevertheless, the following slide is now
selected as lectotype:
N19/11. Aokiko, Japan.
Marked specimen named "Pinnularia karelica" on record sheet.
Finder: 613-5-
Isolectotype:
N19/10. Aokiko, Japan.
Marked specimens named "Pinnularia karelica" on record sheet.
Finder: 409-3; 491-2.
* 60-9 Pinnularia montana Hustedt . Plate l6l/l8
Op 60, p 166, t 5/2.
Holotype:
I66/7. Japan. Aokiko See.
Marked, unnamed specimen, the i-type.
Finder: 351*8.
60-10 Gomphonema vastum Hustedt Plate l6l/l4-17
Op 60, p 166, t 5/4-
There are no marked specimens on slides mounted prior to the publication
of op 60. Therefore a set of younger - Hyrax-mounted - slides on which
there are marked specimens named on index sheets is taken. Of these the
following is selected as lectotype:
N19/12. Aokiko, Japan.
Finder: 377-1; 583-2-5-
Isolectotypes:
N19/11. Aokiko, Japan. N19/10. Aokiko, Japan.
Finder: 529-6. Finder: 589-1-4-
60-11 Gomphonema lingulatum Hustedt Plate 162/1-7
Op 60, p 166, t 5/5-
There are two contemporaneous slides, each with one marked, unnamed
specimen. Lectotype:
N12/41. Japan. Aokiko See.
Finder: 438.4-7 (i-type?).
Isolectotype:
166/93- Aokiko See. Japan.
Finder: 558.6.
I include here micrographs from a Hyrax slide which was mounted after
the publication of op 60. The specimens are marked and named on index sheet
N19/11. Aokiko, Japan.
Finder: 351-5; 432.1-2; 463-1-2.
N.B. Our micrographs (and also Hustedt's own figure) show that the
length, given with "about 15 M™" in the description must be doubled to
more than 30 um.
Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 47, 1985)

104
recombines this taxon: Gomphonema grovei var. lingulatum (Hustedt) Lange-
Bertalot.
60-12 Surirella robusta forma lata Hustedt Plate 162/8
Op 60, p 170, text fig. 1.
There are two slides with picked specimens, both with the taxon's name
on their labels. Of these the following slide which also contains the
i-type is proposed as lectotype:
x3/79• Japan. Aokiko-See.
Isolectotype:
X3/8O. Japan. Aokiko-See.
60-13 Surirella capronii var. obtusa Hustedt Plate 162/9
Op 60, p 170, text fig. 2.
The taxon is nowhere marked or named. The following slide is therefore
- almost at random - selected as lectotype:
166/7- Japan. Aokiko See.
Finder position of the photographed specimen: 194-1-4*
Op. 62. Fossile Bacillariaceen aus dem Loa-Becken in der Atacama-WUste,
Chile. Arch. Hydrobiol. 18, 224-251, 1927.
62-1 Achnanthes atacamae Hustedt Plate 163/1-4
Op 62, p 237, t 7/1-2.
Holotype:
Ma1/5. Chile, Loa 34-
Marked specimens named on label.
Finder: 526.7; 587-9-
62-2 Achnanthes brevipes var. tumida Hustedt Plate 163/12-13
Op 62, p 238, t 7/7-
Holotype:
234/21. Loa, Chile, 11 . o.
Unmarked raphe valve named on record sheet with a set of coordinates.
Finder: 646.5.
62-3 Achnanthes chilensis Hustedt Plate 163/5-U
Op 62, p 238, t 7/3-4-
Holotype:
Ma1/5- Chile, Loa 34-
Marked specimens named on label.
Finder: 342.1-4; 526.7; 527-1; 587-9.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler. ru
105
62-4 Achnanthes speciosa Hustedt Plate 163/14-21
Op 62, p 238, t 7/5-6.
Holotype:
Ma2/8l. Chile. Loa 34.
Marked specimens named on label.
Finder: 314-4; 378.7; 405.1; 436.6-9; 439.6-9; 471.7.
62-5 Amphora chilensis Hustedt Plate 163/22-26
Op 62, p 239, t 7/8-10.
The taxon is nowhere marked. It is, however, noted to occur frequently
on the following slide from which the drawings are said to be made. This
slide is taken as the lectotype:
234/7. Chile, Toco. Profil Loa, 2. unt. a.
62-6. Amphora subrobusta Hustedt Plate 164/I—3
Op 62, p 239, t 7/11-12.
Holotype:
Ul/49- Chile. Loa 34-
The taxon is unmarked, frequent, named on the label.
62-7 Denticula seriata Hustedt Plate 164/4-12
Op 62, p 241, t 8/5.
The taxon is nowhere marked. As lectotype is therefore chosen a slide with
material in which the species is recorded to be frequent:
234/42. Chile. Loa, 39.
62-8 Diatoma sinuatum Hustedt Plate 165/1-2
Op 62, p 241, t 8/6.
Holotype:
234/23. Loa, Chile. 18.
Unmarked specimen recorded with a set of coordinates on record sheet.
Finder: 258.7-
62-9 Diploneis smithii var, chilensis Hustedt Plate 165/5
Op 62, p 242, t 8/9-
The taxon is not marked or named. As lectotype is therefore designated:
234/25. Loa, Chile. 34-
The taxon is frequent.
62-10 Fragilaria harrisonii var. sinuata Hustedt Plate 165/3-4
Op 62, p 242, t 7/19-

106
Holotype:
234/19. Loa, Chile. 11. u.
The taxon is not marked but named on the record sheet with a set of
coordinates.
Finder: 226.9.
62-1 ] Fragilaria spinulifera Hustedt Plate I65/6-I5
Op 62, p 242, t 7/20.
No marked specimen exists. There is a record sheet with a sketch of this
taxon. It belongs to a slide on which the taxon is frequent, for which
reason it may serve as lectotype:
234/16. Chile, Toco. Profil Loa. 3. b.
N.B. Lange-Bertalot (Nova Hedwigia 33, p 726, I98O) raises the question
as to whether this taxon may be conspecific with Navicula gallica (W.Smith)
Lagerstedt (Syn. Nav. fragilarioides Krasske). In the Chilean material
no raphe-bearing valve could be detected in spite of thorough search.
62-12 Mastogloia atacamae Hustedt Plate 166/1-6
Op 62, p 243, t 7/23.
This taxon is nowhere marked. It is recorded with some diagnostic notes
on the record sheet of the following slide on which it is frequent and
which slide is therefore taken as lectotype:
234/16. Chile, Toco. Profil Loa. 3. b.
62-13 Melosira spinifera Hustedt Plate 167/I-IO
Op 62, p 243, t 7/21-22.
No marked specimens exist. On a record sheet Hustedt remarks that he had
drawn valves of this taxon occurring on the slide that belongs to this
record sheet. This slide, which contains many specimens, is therefore
proposed as lectotype:
234/7. Chile, Toco. Profil Loa, 2 unt. a.
62-14 Navicula atacamae Hustedt Plate 166/7-12
Op 62, p 243, t 8/7.
Hustedt did evidently not mark this taxon. He recorded it from the
following slide which is taken as lectotype:
234/7. Chile, Toco, Profil Loa, 2 unt, a.
The taxon is by no means frequent, therefore a few finder positions where
valves were found are here given: 432.8; 585-5; 616.9.
N.B. It is quite clear that, as Hustedt already stated in his
description, this diatom belongs in the genus Anomoeoneis. The transapical striae
were counted with 40 in 10 urn.
62-15 Navicula dicephala var. chilensis Hustedt Plate 167/14—16
Op 62, p 244, t 7/30.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
107
Holotype:
234/21. Loa, Chile. II. o.
Unmarked specimen recorded as "Nav." on record sheet.
Finder: 464-9.
62-16 Navicula exigua var. elliptica Hustedt Plate 167/11—13
Op 62, p 244, t 7/27.
The taxon is nowhere marked or named. Only the list indicates that it is
to occur on the following slide which is taken as lectotype:
J 234/21. Loa, Chile. 11. o.
Finder positions of the unmarked specimens: 351.6; 407-5} 556'-7-
62-17 Navicula halophila forma minor Hustedt Plate 167/17-19
Op 62, p 244, t 7/26.
Holotype:
234/7. Chile, Toco. Profil Loa, 2 unt. a.
Marked, unnamed specimen.
Finder: 432-9-
N.B. In op 170, p 64, Hustedt includes this taxon in Navicula halophila
(Grunow) Cleve.
62-18 Navicula pseudogracilis Hustedt Plate 166/13
Op 62, p 244, t 8/4.
One specimen was found. It is not marked, named "Navic. n.sp. 23" on the
record sheet. The slide with this specimen is proposed as lectotype:
Ma2/8l. Chile, Loa, 34-
Finder: 560.2.
62-19 Navicula subvulpina Hustedt Plate 168/1-3
Op 62, p 244, t 7/28, 8/8a.
This taxon is nowhere marked or named. Two specimens were located on two
slides with the type material. The following is selected as lectotype,
it may actually represent the i-type, in spite of the little difference
in size:
234/25. Loa, Chile, 34-
Finder: 558.5-6.
Isolectotype:
Ma2/8l. Chile. Loa. 34-
Finder: 520-5-
62-20 Navicula wetzelii Hustedt Plate 168/4-5
Op 62, p 245, t 7/24.

108
Holotype:
234/7. Chile, Toco. Profil Loa, 2 unt. a.
Unmarked, unnamed specimen.
Finder: 555-5-
62-21 Nitzschia chilensis Hustedt Plate 169/1-7
Op 62, p 245, t 8/3.
This taxon is not marked, named "Ni. 6" in the records. The following
slide is designated as lectotype:
234/16. Chile, Toco. Profil Loa. 3- b.
The taxon is not infrequent; the finder position of a specimen resembling
the i-type is 339-9-
The following slides contain many specimens, mainly fragments, of this
taxon:
Ma2/8l. Chile. Loa 34- Ma2/21. Loa.
62-22 Pinnularia distincta Hustedt Plate 168/10-12
op 62, p 246, t 7/25.
Holotype:
234/22. Loa, Chile, ll.o.
Unmarked specimen recorded as "Caloneis" on the record sheet.
Finder: 499.1-
Further slide:
234/20. Loa, Chile, ll.u.
Unmarked, unrecorded specimen.
Finder: 496.1.
62-23 Rhopalodia wetzelii Hustedt Plates 170/1-3, 171/1-2
op 62, p 246, t 8/1-2.
The taxon, not being marked, is very frequent in material no. 34. Hustedt
noted it as "Rhopal. n.spec. tordiert!" on the record sheet of the
following slide which is here designated as lectotype:
234/28. Loa, Chile. 34-
62-24 Stauroneis atacamae Hustedt Plate 168/6-9
Op 62, p 247, t 7/29-
The taxon is recorded (as "Staur. spec. 10") on several sheets but marked
on one slide only which is therefore here declared as lectotype:
234/7- Chile, Toco. Profil Loa, 2 unt. a.
Finder: 404.1; 460.3; 463-1-
62-25 Surirella chilensis var. tumida Hustedt Plate 172/1—3
Op 62, p 248 (no illustration but reference to op 53, t 362/6).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwesrambler.ru
109
Holotype:
XI/78. Calama, Chile.
A slide with picked specimens named "Surirella chilensis Jan." on the
label. Along with specimens of this latter taxon, it contains the i-type
and another valve that belongs here.
Finder: 434-5 (i-type)] 434-6.
62-26 Surirella chilensis var. constricta Hustedt Plate 17^/3
Op 62, p 248 (no illustration).
the taxon is not marked on the slides but is noted by name on the record
sheet of the following slide which is proposed as lectotype:
234/34- Loa, Chile. 36.
Finder position of the unmarked specimen: 340.5-
62-27 Surirella chilensis var. rostrata Hustedt Plate 173/1
Op 62, p 248 (no illustration).
No marked specimen exists of this taxon. It is, however, included on the
record sheet by an indication of the rostrate valves. The relevant slide
is therefore taken as lectotype on which I point to two specimens by their
finder positions:
234/34- Loa, Chile. 36.
Finder: 348.1-2; 528.9.
62-28 Surirella wetzelii var. dubia Hustedt Plate 173/2
Op 62, p 250 (no illustration). 5
No marked specimen exists. The taxon is noted as "Sur. wetzeli var." on
the record sheet of the following slide which is here adopted as lectotype:
234/7. Chile, Toco. Profil Loa, 2 unt. a.
Op. 63. Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 1, Lief. 1, 1-272, 1927.
63-1 Melosira granulata var. angustissima
forma curvata vel spiralis Hustedt Plate 174/1-3
Op 63, p 251, f 80,7 (on p 142).
Holotype:
Al/48. Mitterteich, SUd-Mahren.
The taxon is abundant in the material, not marked. The slide label bears
the taxon's name, peculiarly with Grunow as authority and not Hustedt.
N.B. In op 108, p 10, Hustedt names this taxon Melosira granulata var.
angustissima forma curvata which latter epithet is valid, because of
Article 23.1 of the ICBN.

110
Op- 64. A. Schmidts Atlas der Diatomaceenkunde, Heft 92, t 365-368, 1927.
64-1 Surirella hians Hustedt Plate 175/1-5
op 64, t 365/1.
Validating description: Valvae heteropolares, ovales, circiter 186 um
longae, 95 um latae, cum hiato longo structurae
marginalis in polo lato.
Holotype:
X2/62. Java.
A single mount with the i-type, named on the label.
64-2 Surirella munda Hustedt Plate 176/1-2
op 64, t 366/1.
Validating description: Valvae latissimae, in media parte leviter con-
strictae, apicibus semicircularibus, circiter
190 um longae, in media parte circ. 52 um latae.
Holotype:
X6/54. Bass-Strasse.
A single mount with the illustrated specimen and in Hustedt's hand the
following text on the right-hand label: "Surirella munda Hust. = S. nan-
koorensis Hust." See also tx 52-11.
64-3 Surirella lata var. elliptica Hustedt Plate 177/1-2
Op 64, t 366/2.
Validating diagnosis: A Surirella lata W. Smithii var. lata valvis ellip-
ticis differt.
Holotype:
X6/58. Neapel.
Single mount with the illustrated valve, named on label.
64-4 Surirella ornatissima Hustedt
Op 64, t 366/6.
Description included in plate explanation.
Holotype:
X6/45- Java.
Single mount with the i-type, named on the label.
64-5 Cymatopleura calcarata Hustedt Plates 179/1-2, 180/1-3
Op 64, t 367/1-2.
Description in op 111, p 48O, f 579.
There are five slides with picked specimens, all named "Cymatopleura" on
the labels. As lectotype may serve:
Xa/20. Tanganika See.
A single mount with the valve illustrated by Hustedt as f 1.
Plate 178/1-2
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
111
Isolectotypes:
Xa/l8. Tanganika See. 6. Xa/48. Tanganyika See.
With the i-type of f 2. ^^^ Tanganyika See> 6>
Xa/l9. Tanganika See. 6.
N.B. The spines are hollow but appear to be closed at the tips, open
at the bottom. The basal openings are elongate, their configuration
resembles that of labiate processes, at least in the light microscope.
64-6 Surirella fastuosa var. splendida Hustedt Plate l8l/l
40p 64, t 367/3.
Validating diagnosis: A typo valvis linearibus differt.
Holotype:
X9/31. Sodertelge.
A single mount with the illustrated specimen.
64-7 Surirella arguta Hustedt Plates l8l/2, 182/1-4
Op 64, t 367/4-5.
Validating description: Valvae vix heteropolares, lanceolatae, apicibus
anguste rotundatis, circiter .190-240 um longae,
73-80 um latae.
Of the two slides with picked specimens, named on the labels, the following
is selected as lectotype:
XI/20. Neu-Fundland.
This slide contains also the i-type of f 4.
Isolectotype:
XI/l9. Neu-Fundland.
N.B. The magnification given by Hustedt is incorrect, it should be
about x600 and not xlOOO.
64-8 Surirella circumvallata Hustedt Plate 183/1-3
Op 64, t 367/7.
Validating description: Valvae heteropolares, oviformes, circiter 80 um
longae, c. 50 um latae.
Two single mounts bear the taxon's name on their labels. Since none can
be identified as the specimen illustrated, the following is proposed as
lectotype:
X6/37. Insel Paney. Malayischer Arch.
Isolectotype:
X6/36. Insel Paney. Malayischer Arch.
64-9 Mastogloia tropica Hustedt Plate 183/4-7
Op 64, t 367/8.
Description in op 80, p 49, where Hustedt synonymizes this taxon with and
includes it in Mast, kjellmanii Cleve.

IJ 2
No marked specimen on contemporaneous slides could be found. There is a
series of single mounts made in 1930 of which the following is taken as
lectotype:
Ri/33- Miang Besar. Borneo.
Isolectotypes:
Ri/34. Miang Besar. Borneo.
Rl/35- Miang Besar. Borneo.
Rl/36. Miang Besar. Borneo.
N.B. All right-side labels of the above slides read in Hustedt's hand,
"Mastogloia tropica Hust. = Kjellmanii CI."
64/IO Surirella kolbei Hustedt Plates 184/1-2, 185/1-2, 186/1-2
Op 64, t 368/1-3.
Validating description: Valvae latissime lineares usque ad leviter con-
strictae, sine structura in planitie central!,
126-180 urn longae, 55-100 urn latae.
There is. a series of eight slides with picked specimens, all named on the
labels. As lectotype is designated:
X5/8. Bass-Strasse.
isolectotypes:
X5/4. Bass-Strasse. X5/9- Bass-Strasse
X5/5* Bass-Strasse. X5/1O. Bass-Strasse
X5/6. Bass-Strasse. X5/11. Bass-Strasse.
X5/7- Bass-Strasse.
64-11 Surirella incerta Hustedt Plate 186/3-4
Op 64, t 368/4.
Validating description: Valvae lineares, in media parte amoene constrictae,
apicibus semicircularibus, circiter 62 urn longae,
20 urn latae.
Holotype:
X5/97- Campeche Bank. (not Campeche-Bai as noted in the legend)
A single mount named on the label.
64-12 Surirella angustemarginata Hustedt Plate 188/1-2
Op 64, t 368/5.
Validating description: Valvae latissime lineares, in media parte
constrictae, apicibus late rotundatis, circiter
84 um longae, 39 Mm latae.
Holotype:
XI/l2. Campeche Bank. (not Campeche Bai as given in the legend)
A single mount with name on the label.
64-13 Surirella brasiliensis Hustedt Plate 189/1-2
Op 64, t 368/7.
Validating diagnosis: Sur. fastuosae Ehrenbergii similis, sed cum infun-
sCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
113
dibulis angustissimis.
Holotype:
X6/48. Victoria. Brasilien.
Single mount named on the label.
64-14 Mastogloia biapiculata Hustedt Plate 186/8
Op 64, t 368/11.
Description in op 80, p 513, f 943-
J No slide with marked or named specimens could be located. It must be
stated here that the specimens depicted by Hustedt in op 64 and in op 80,
f 943, differ greatly, and it is totally impossible that they are con-
specific. With this very insufficient and inadequate material in hand it
may be forgiven that no type can be presented here or at least a neotype
be established.
64-15 Mastogloia borneensis Hustedt Plates 186/5-7, 187/1-3
Op 64, t 368/12.
Description in op 80, p 559, f 991.
No contemporaneous slide with marked or named specimens was found. We
located two marked specimens on younger (1931) slides, however, both
unnamed. Of these the following may here serve as lectotype:
Zt2/65. Miang Besar, Borneo. 2.
Finder: 524-9-
Isolectotype:
Zt2/62b. Miang Besar, Borneo.
Finder: 229.4.
64-I6 Mastogloia subaffirmata Hustedt Plate 187/4-12
Op 64, t 368/13
Description in op 80, p 526, f 960a-f.
The situation with this taxon is the same as with the preceding one, no
contemporaneous marked specimen, but marked younger (1931) specimens named
"Mastogl." on the index sheet of the following slide which is here
considered as lectotype:
Zt2/65- Miang Besar. Borneo. 2.
Finder: 311-4; 347.2; 525-2; 552.4-7; 649-3-6.
Op- 66 Die Kieselalgen Deutschlands Osterreirh a ,
L. Rabenhorsts Kryptogamenflora von' nln^ m , ""d der Sch*ei*- Dr.
Schweiz, Band 7, Teil lfLief/2, 273 464^928 ^ ^erreich und d
er
rLC°ST°dlSCUS ~»"*» -. fasciculata Hustedt Plate 190/l ,
Op 66, p 3Q0 f 20? (» „ j. • riaie iVO/l-3
y f ow, 1 c\)L {".. .excentricus ").

114
We did not succeed in locating the specimen illustrated by Hustedt, nor
did we find any slide that contained marked and/or named specimens and
that was made prior to the appearance of op 66 in 1928. We are therefore
compelled to create a neotype. Luckily this taxon is marked and properly
recorded by name on the index sheet accompanying three slides which are
all from the same sample. As neotype I select here:
202/18a. Norwegen. Snigsfjord. 1. B. e. 1.
Finder: 282.2-3; 462.9; 492.7.
Isoneotypes:
202/l3a. Norwegen. Snigsfjord. 7« B. a. 1.
Finder: 258.3.
202/18b. Norwegen. Snigsfjord. 7. B. f. 1.
Finder: 462.6; 470.1; 528.9; 610.9.
Op. 71. Bacillariophyta (Diatomeae). In: A. Pascher, Suliwasser-Flora
Mitteleuropas, Heft 10, 466 pp., 1930.
71-1 Fragilaria undata var. quadrata Hustedt Plate 190/4-7
Op 71, p 144, f H9B.
The taxon is nowhere marked or named. As lectotype is therefore a slide
proposed on which it is frequent and which contains material cited in
the protologue:
142/50. Sager Meer. Grund. (the correct orthography is Saager Meer)
N.B. In op 76, p 166, f 674d-e, Hustedt includes this taxon in
Fragilaria constricta forma stricta A. Cleve.
71-2 Synedra pulchella var. lanceolata forma constricta Hustedt
Plate 191/1-3
Op 71, p 160, f 190.
Holotype:
Kl/30. Bremerhaven. Kaiserhafen.
The taxon is frequent, not marked, named on the label.
N.B. Hustedt's epithet is a younger homonym of Synedra pulchella var.
lanceolata forma constricta Liebetanz (Bull. Internatl. Acad. Polon. Sci.
Lettres, Classe Math.-Nat., ser. B, vol. 1925, p 110, 1926). The latter
author's illustrations (t 4/1-2) make it appear probable that both taxa
are identical.
71-3 Eunotia arcus var. fallax Hustedt Plate 191/4-6
Op 71, p 175, f 219.
The Taxon is nowhere marked. There is a slide without labels which,
according to Hustedt's notes, contains material from the Sarek Mountains,
"Westlich der Hiitte, an Moos." Hustedt records an "Eunotia, ahnl. arcus,
mxt weiten Streifen" which note is crossed out with pencil and replaced
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
115
by "fallax A. CI." This slide is here selected as lectotype. The taxon
is not frequent, therefore we give a finder position where two specimens
were found.
Slide no. 47/45• (Originally without labels).
Finder: 499-3-
71-4 Eunotia trinacria var. undulata Hustedt Plate 191/8-11
Op 71, P 176, f 222.
The taxon is nowhere marked or named. As lectotype is therefore proposed:
Ll/87- Sachsische Schweiz. 1.
71-5 Eunotia exigua var. bidens Hustedt Plate 191/7
Op 71, P 176, f 224.
The taxon is nowhere marked or named. On the following slide labelled
"Eunotia exigua Grun." there are a few specimens that can be identified
with this "variety". It is therefore proposed as lectotype:
Ll/70. Rudolfswaldau, Schlesien.
71-6 Eunotia exigua var. compacta Hustedt Plate 19l/l8-23
Op 71, P 176, f 225.
Although there is a slide in the collection, mounted in 1929, with marked
specimens named on the label, Hustedt adopted an illustration from his
Sarek Mountains paper in his description (op 46, t 18/17). It is not very
likely either, that the markings were made much prior to the publication
of op 71. I have therefore selected one of three slides from the Sarek
Mountains from which Hustedt recorded "Eunotia nymanniana (V.H. 34-8
rechts)". The three specimens present on the slide are not marked, but
two of them are evidently the iconotypes of the illustrations cited above.
The slide has completely blank labels. The record leaflet in the box bears
the note: "8. Im Tal ostlich der Hiitte, an Moos, 13.7.1907." This slide
is designated as lectotype:
Slide no. 47/8.
Finder position of the unmarked specimens: 494*9 (i-type f 16 in op 46);
497-3; 584.9 (i-type f 17 in op 46 and f 225 in op 71).
The younger slide - with marked and named specimens - may have been used
for the illustrations in the "Kieselalgen" (op 78, p 287, f 751s-u):
Ll/75. Riesengebirge. Lomnitz. 34-
Finder: 286.9; 434.3; 463-7; 526.2-3.
71-7 Eunotia valida Hustedt Plate 191/24-27
Op 71, p 178, f 229-
Holotype:
L4/7. Sachs. Schweiz. Edmundskamm. (sic! orthogr. error of —klamm)
The taxon is frequent, unmarked, named on the label.

116
71-8 Eunotia meisteri Hustedt Plate 19l/l2-l6
Op 71, P 179, f 230.
Holotype:
L2/39- Sachsische Schweiz. 1.
Marked specimens named on the label.
Finder: 285-5; 374-4-5; 430.3-6; 46O.8; 520.6-9; 527-6; 585-5.
71-9 Eunotia meisteri var. bidens Hustedt Plate 19l/l7
op 71, p 179, f 231.
Holotype:
Ll/87. Sachsische Schweiz. 1.
Marked specimen named on label.
Finder: 496.8
This specimen is in outline not very similar to the one illustrated by
Hustedt. In op 78, p 290, f 755m, however, Hustedt gives another
illustration which evidently represents the specimen of the above type slide.
71-10 Achnanthes ploenensis Hustedt Plate 192/1-6
Op 71, p 199, f 280.
Holotype:
Ma2/67. Schweriner See. 18.9-18.
Three specimens marked in the same circle named on the label.
Finder: 524.2-3.
71-11 Achnanthes conspicua var. brevistriata Hustedt Plate 192/10-17
Op 71, p 202, f 292.
Among the localities cited in the protologue a slide from the following
is chosen as lectotype:
19/6. Gr. Madebroken-See. Grund. 5 m.
The taxon is not marked and not named, it occurs not frequently on the
slide.
71-12 Achnanthes clevei var. rostrata Hustedt Plate 192/18-24
Op 71, P 204, f 295-
Two marked, unnamed specimens, not the illustrated valves, were found on
the following slide which may serve as lectotype:
18/75. Gr. Uklei-See. 10 m, unten. 4-10.21.
Finder: 289.8; 585-9-
Further specimens are here shown from another slide where the taxon occurs
within diamond rings marking other taxa:
N15/73. Gr. Madebrokensee. 5 1/2 m. Plon.
Finder: 339-4; 341-3; 428.6-9.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
117
71-12a Achnanthes dispar var. angulata Hustedt Plate 192/25-26
Op 71, P 204, f 296b.
Holotype:
Mal/97- C
Marked sp
Finder: 400.7-8.
Holotype:
Mal/97. Gr. Madebrokensee. Plbn. 5 l/2
Marked specimen named on label.
m.
71-13 Achnanthes kolbei Hustedt Plate 192/29-38
Op 71, P 204, f 279-
The taxon is marked on two slides containing the same sample. It is named
on the label of the first-cited slide, on the second on an index sheet.
As lectotype is here designated:
Mal/97. Gr. Madebrokensee. Plon. 5 l/2 m.
Finder: 224-9; 401.3; 433-2.
Isolectotype:
N15/73. Gr. Madebrokensee. 5 1/2 m. Plon.
Finder: 339-4; 341-3; 489-3-6; 490.7-8.
N.B. In the micrographs the rapheless valves appear to have also a
raphe. This is, however, only the impression of the sibling valve's raphe
which is here found remarkably regularly.
71-14 Achnanthes lacunarum Hustedt Plate 192/7-9
op 71, p 205, f 297.
Holotype:
Mal/99. Gr. Tuczen-See. Grund. 6.9.18.
Marked specimen named on label.
Finder: 465.1.
71-15 Frustulia rhomboides var. saxonica forma undulata Hustedt
Plate 192/27-28
Op 71, p 221 (no illustration).
Illustration in op 74, t 369/7 ("Titisee, Schwarzwald"), see also op 95,
p 729, f 1099b.
The taxon is nowhere marked, nor does its name appear anywhere. Since
Hustedt simultaneously published a drawing of this forma in op 74 (op.
cit.) which is a specimen from the Titisee, the following slide, on which
our taxon is frequent, is chosen as lectotype:
40l/l7. Torfmoor am Titisee, Schwarzwald. Rabh. Exs. 761.
71-16 Caloneis ladogensis var. densestriata Hustedt Plate 193/1-3
Op 71, P 234, f 354.
Holotype:
Nel/13. Wollingst, See.
The taxon is very frequent, not marked. - On the right label the
combination "Caloneis ladogensis CI." is crossed out and replaced by "Neidium

118
ladogense (CI.) Hust.", a combination never published by Hustedt.
N.B. The relation between this taxon and Caloneis ladogensis var.
densestriata 0strup (Danske Diatomeer, p 12, t 1/4, 1910) can only be
clarified after a thorough examination of both types. 0strup's variety
was transferred to Neidium by Foged (Botan. Notiser 1952, p 165, 1951)•
This was better substantiated by Hustedt (op 162, p 74). The taxon, i.e.
0strup's taxon, was subsequently raised to specific rank by Krammer (in
Krammer & Lange-Bertalot, Naviculaceae, p 105, 1985)* Neidium densestri-
atum (0strup) Krammer.
71-17 Caloneis silicula var. peisonis Hustedt Plate 193/7-9
Op 71, p 238, f 368.
Of the four slides with marked specimens, all named on the labels, the
following is taken as lectotype:
Nbl/27- Neusiedler See.
A mount with three picked specimens, one of them perhaps the i-type.
Three further slides - isolectotypes - are strewn slides with marked
specimens:
327/6. Neusiedler See. 327/8. Neusiedler See.
Finder: 491.6. Finder: 526.9.
327/7. Neusiedler See.
Finder: 497-8-9-
71-18 Caloneis schumanniana var. lancettula Hustedt Plate 193/4-6
Op 71, p 240, f 371-
Hustedt gave no locality when describing this taxon, nor did he mark or
name specimens on his slides. It was not before 1941 that he mounted
samples from the Schmaler Lucin, a lake in Mecklenburg (cf op 126,p 336-338,
samples no. 2 (69) and 3 (70)). Two slides of these are deposited in a
box containing Caloneis species, and on each slide a specimen is marked
and the name is on the labels. Of these slides I designate now as neotype:
Nbl/37. Schmaler Lucin. 14 m. 17-8.24.
Finder: 405-6-9-
Paraneotype:
Nbl/20. Schmaler Lucin. 13 m. 16.8.24-
Finder: 471.2.
71-19 Diploneis pseudovalis Hustedt Plate 193/10-14
Op 71, P 253, f 403-
Holotype:
02/68. Oldesloe. 11,2.
Marked specimens named on label, often more than one in a circle.
Finder: 315-6-9; 344-1-4; 376-7; 380-7; 407-3; 467-7; 468.8.
BY pAhUTA yURI, Kiev-2007,e-mail pahutaql
119
71-20 Navicula disjuncta Hustedt Plate 194/1-3
Op 71, P 274, f 451-
The taxon is net marked or named, at least not on contemporaneous slides.
One unmarked specimen was found on the following slide of which I am sure
that Hustedt examined it. This specimen probably represents the holotype:
19/6. Gr. Madebroken-See. Grund. 5 m.
Finder: 433-9- ,
71-21 Navicula kotschyi forma undulata Hustedt Plate 194/4-5
Op 71, p 275 (no illustration).
Illustration in op 74, t 370/33-
The taxon is nowhere marked or named. The following slide with material
named in the protologue, on which the taxon is not infrequent, is here
proposed as lectotype (the right label bears the species name):
13/96. Hangesteinhohle am Zobten, Schlesien, 17/5.17-
71-22 Navicula pupula var. capitata Hustedt Plate 194/6-7
Op 71, P 281, f 467c
There is one slide in the collection, a mount with two picked specimens,
which bears the taxon's name in pencil, added to "Navicula pupula Ktz.
var. rectangularis Greg." This slide may serve as lectotype:
N6/100. Henriksberg. Finnland, Lagune.
N.B. This combination is preceded by Navicula pupula var. capitata
Skvortzow & Meyer 1928 which is evidently the same taxon. Hustedt (op 170,
p 121) refers to this latter combination and not to his own (adding an
exclamation mark behind 1928), but fails to synonymize his own taxon with
that of Skvortzow & Meyer.
71-23 Navicula subhamulata var. undulata Hustedt Plate 194/8
Op 71, p 282, f 468b.
The taxon is nowhere marked or named, at least not on contemporaneous
slides. Hustedt's notes in the protologue about distribution are too vague
and sweeping to enamble a successful search for unmarked specimens.
Therefore a type cannot be produced here, and the taxon must lastly remain
doubtful, in spite of Hustedt's taxonomic actions mentioned below.
N.B. In op 171 j P 179, f 1314, Hustedt synonymizes this taxon with
and includes it in Navicula helensis Schulz.
71-24 Navicula fluens Hustedt Plate 194/9-10
Op 71, p 285, f 474.
Holotype:
Mal/97. Gr. Madebrokensee. PIon. 5 l/2 m.
Marked specimen named on label.
Finder: 645-1-2.

120
71-25 Navicula krasskei Hustedt Plate 194/13-20
Op 71, p 287, f 481.
Holotype:
N4/73. Elbsandstein-Gebirge.
The taxon is not marked, occurs in masses, named in the label. - The
mountant of this slide has deteriorated and also turned brownish which
both interferes with photomicrography. Therefore a younger slide - made
1934 - is here also consulted on which the taxon is virtually pure:
N4/71• Sachsische Schweiz.
The taxon is named on the label.
N.B. The structure of this taxon is, indeed, very difficult to make
out, our counts resulted in 36-40+ striae in 10 |im. The characteristic
central part appears to be brought about by the valve sculpture. Some of
our micrographs indicate a continuous striation crossing the "valleys",
other micrographs show an interruption of the striae, resulting in
longitudinal side areas which, however, are not connected with the central area.
71-26 Navicula pseudoscutiformis Hustedt Plate 194/11-12
Op 71, p 291, f 495.
Holotype:
Mal/97-.Gr. Madebrokensee. PIon. 5 1/2 m.
Marked, unnamed specimen.
Finder: 345-9-
71-27 Navicula verecunda Hustedt Plate 194/21-25
Op 71, p 302, f 522.
No marked specimen could be found, nor does the taxon's name appear on
one of the contemporaneous slides. Hustedt simultaneously published in
op. 74, t 370/39-40, illustrations of this taxon from the Madebrokensee.
A slide with material from this locality, on which the taxon is not
infrequent, is therefore proposed as lectotype:
19/9. Gr. Madebrokensee, 5 l/2 m. Muschelzone. 2/10.21.
N.B. In op 145, p 473, Hustedt synonymizes this taxon with and includes
it in Navicula vitabunda Hustedt (see tx 71-28).
71-28 Navicula vitabunda Hustedt Plate 194/26-29
Op 71, p 302, f 523.
Holotype:
l8/89b. Krummen-See. 11m, oben. 4-10.21.
Several specimens marked in the same circle, not named.
Finder: 490.6,
71-29 Navicula subocculta Hustedt Plate 194/30-32
Op 71, p 307, f 546.
Two marked specimens, both not named, exist on two slides from two separate
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
121
samples. As lectotype is here selected:
18/71. Gr. Ukleisee, Holstein. an Nuphar-Stengeln. 4.10.21.
Finder: 431.2.
Paralectotype:
18/73. Gr. Uklei-See. 10 m. 4/10.21. oben.
Finder: 431.4-7-
N.B. All dimensions given in the description of this taxon in op 71
are incorrect, the magnification of the figure is x2000. Hustedt
complemented and corrected this in the "Kieselalgen" (op 170, p 131), along with
j corrections of the structure misinterpreted in the original description.
71-30 Navicula tuscula forma minor Hustedt Plate 194/33-37
Op 71, P 308, f 553-
There is only one slide with marked specimens which are named on the label.
Although the material on this slide was collected in 1923, there remains
some suspicion that the slide was mounted later than 1930. Notwithstanding,
this slide is here adopted as lectotype:
N10/58. Finnland. Pojovik. 188.
Finder: 311.6; 370.5; 378.3; 404.1-4; 468.5-6; 490.2.
71-31 Pinnularia gibba var. linearis Hustedt Plate 195/1-2
Op 71, p 327, f 604.
Hustedt failed to mark or name specimens of this taxon. Since he recorded
it from the following slide, on which there are several specimens, this
is here taken as lectotype:
80/15. Synddalen. 67. Lagune. 25.7-23.
71-31a Amphiprora costata Hustedt Plate 195/13-15
0p 71, p 338, f 623.
Two slides with marked specimens named on the labels exist. Of these the
following is proposed as lectotype:
Rb/13. Moravia meridion. Nikolsburg. leg. J. Bily.
This slide was mounted by E. Sprenger.
Finder: 397-5-6; 472.1-2; 523-3; 582.2-5; 583-3-6; 652.4; 653-6;
676.1-4; 742.4.
Isolectotype:
Rb/l2. Nikolsburg. S-Mahren.
This slide was mounted by Hustedt.
Finder: 3U.2-5; 375-7-8; 402.3; 437-7-
N.B. Because of Amphiprora costata 0'Meara 1869 VanLandingham
(Catalogue, p 163, 1967) renamed this taxon A. cholnokyi VanLandingham, after
Cholnoky (Nova Hedwigia 2, p 20, i960) had already given it an
illegitimate name, A. hustedtii Cholnoky, non Meister 1937.

122
71-32 Gomphonema angustatum var. linearis Hustedt Plate 195/7
Op 71, P 373, f 692.
The taxon is nowhere marked or named. We have therefore no indication or
other handhold where to look for it and can here not produce a type of
any sort.
71-33 Gomphonema longiceps var. subclavata forma gracilis Hustedt
Plate 195/3-6
Op 71, p 375, f 706.
Holotype:
S2/48. Waldensee.
The label on the right side bears the inscription, "Gomphonema mustela
var. subclavata f. gracilis Hust." The specimens are marked.
Finder: 255-2; 341.2; 378.2-5; 403-4; 437.2-3; 498.4-7; 529-5-8; 615.5-
71-34 Gomphonema olivaceum var. minutissima Hustedt Plate 195/8-11
Op 71, p 378, f 720.
Holotype:
Sl/52. Passau, Brunnen.
The taxon is unmarked, very frequent, named on the label.
N.B. All specimens" of this taxon on the type slide have apparently
four pore-like structures in the centre. Each of these four pores is
situated in front of one stria pointing to the two central raphe pores, within
the axial area. This variety is thus very similar to Gomphonema oliva-
ceoides Hustedt (tx 126-11; see op 126, p 397, t 37/9-12, 1950). However,
the two are perhaps not conspecific, because the variability ranges seem
to be different. On the other hand, Krammer & Lange-Bertalot (Naviculaceae,
p 49, 1985) did not hesitate to combine G. olivaceoides with this taxon.
71-35 Surirella angusta var. constricta Hustedt Plate 195/12
Op 71 , P 435 (no illustration).
This taxon is nowhere marked or named. Valves with more or less concave
margins are not infrequent on the following slide which may represent the
lectotype here:
Xl/ll. Sandgrube bei Wulsdorf, bei Wesermunde.
"Surirella angusta Ktg." is written on the right label.
N.B. In op 162, p 101, Hustedt remarks that Skvortzow described this
taxon one year earlier (Bacill. Hankasee, p 55, 1929) so that it has to
be attributed to Skvortzow, under the same name.
Op. 73. Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 1, Lief. 5, 785-920, 1930.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
123
73-1 Triceratium ischaboense Hustedt Plate 196/1-2
Op 73, P 801, under Tr. favus. (no illustration).
Syn.: Triceratium megastomum sensu Brightwell, nee Ehrenberg,
Hustedt refers to Brightwell's illustration (Qu. J. Micr. Sci. 1, p 249,
t 4/7, 1953)- Later, in op 168, t 476/4, Hustedt presents an own
illustration with description and discussion. At the same time he designates slide
no. H 312 as type.
Holotype:
H4/12 (old no. H 312). Ischaboe-Guano. Afrika.
Marked specimen named on label.
) Finder: 619.3-6.
-4
73-2 Triceratium antediluvianum forma pentagona Hustedt, Plates 196/3, 197/1
Op 73, p 812, f 473.
Holotype:
H2/29. Ceylon.
Slide with two picked specimens of which one represents the i-type. Name
on the label.
There are two more slides with three picked specimens each and the name
on the labels:
H2/30. Hafen von Korfu.
A slide mounted by E. Debes, Leipzig.
H7/9- Korfu, Hafen.
Probably also mounted by Debes, but re-labeled with Hustedt's labels (the
youngest type).
N.B. All specimens except one possess one enlarged ocellus like the
one illustrated by Hustedt.
73-3 Triceratium balearicum forma quadrata Hustedt
Op 73, p 815 (no illustration).
We have so far been unable to locate a marked specimen of this taxon, the
name of which appears nowhere in Hustedt's records. We did also not
succeed in finding an unmarked specimen that could with sufficient
certainty be connected with this taxon. It must therefore remain invalid.
73-4 Triceratium reticulum forma quadrangularis Hustedt Plate 197/2
°P 73, p 824 (no illustration).
Holotype:
H4/88. Samoa.
A single mount labeled "Triceratium reticulum E. f. quadrigona".
73-5 Triceratium reticulum forma pentagona Hustedt Plate 197/3
Op 73, p 824, f 487.

124
Holotype:
H4/86. Padang. Sumatra.
A slide with picked specimens mounted by E. Debes, Leipzig. The taxon is
named on the label: "Tricerat. punctatum Brightw. forma 5-gona".
Op. 74- A. Schmidts Atlas der Diatomaceenkunde, Heft 93, t 369-372, 1930.
74-1 Navicula maeandrinoides Hustedt Plate 198/1-4
Op 74, t 370/3.
Description in op 171, P 308 {under Nav. rhombiformis Hustedt).
Holotype:
N5/57* Columbia River, Oregon.
A single mount with the taxon's name on the label.
N.B. In op 175, P 667, f 1666b (under Nav. maeandrina Cleve), Hustedt
suspects that his taxon may be a "Sporangialform" of either N. maeandrina
or N. theta Cleve.
74-2 Navicula typografica Hustedt Plates 198/5-6, 199/1-2
Op 74, t 370/6.
Validating description: Valvae elliptico-lanceolatae apicibus rostratis,
55-65 urn longae, 20-26 nm latae.
There are three slides, all single mounts, with the taxon's name on the
labels. None can be identified with sufficient certainty with the specimen
illustrated by Hustedt. Lectotype:
N8/80. Columbia River.
Isolectotypes:
N8/8l. Columbia River, Oregon.
NIO/l. Columbia River.
74-3 Navicula subplacentula Hustedt Plates 199/3-4, 200/1-3
Op 74, t 370/7.
Description included in plate explanation; see also op 114, p 28l.
The illustrated specimen could not be identified with those on the slides.
There is quite a number of slides with picked specimens or single mounts,
all named on the labels. Among these the following single mount may serve
as lectotype:
N8/24. Tanganikasee. 6.
Isolectotypes:
N8/23. Tanganikasee. 6. N8/28. Tanganikasee. 6.
N8/25. Tanganikasee. 6. N8/29- Tanganyikasee.
N8/26. Tanganjika-See. 6. N9/70. Tanganikasee. 6.
N8/27. Tanganyikasee. 6.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
125
74-4 Navicula rhynchocephaloides Hustedt Plate 201/1-3
Op 74, t 370/8.
Description included in plate explanation.
There are two single mounts with the taxon's name on their labels, but
none contains the illustrated specimen. As lectotype is chosen:
N7/32. Tanganikas ee. 0.
Isolectotype:
N7/31• Tanganjika-See. 6.
74-5 Navicula pseudodemerarae Hustedt Plate 202/1-7
Op 74, t 370/9.
Description included in plate explanation; also mentioned in op 114, p
282; see also op 175, p 679, f 1679-
There are three slides with marked and named specimens. The following is
designated as lectotype:
Mal/8l. Demerara River.
Finder: 523-1-2 (i-type?).
Isolectotypes:
NlO/44. Demerara River. Na2/i9. Demerara River. 6.
Finder: 350.6. Finder: 381.2.
N.B. Hustedt1s illustration in op 74 is rather inadequate, that in
°P 175 gives the raphe symmetry much better.
74-6 Navicula lagerheimii var. intermedia Hustedt Plate 201/4
Op 74, t 370/22.
Description in op 94, p 234.
One slide with a marked, unnamed, specimen was found, it is probably the
one illustrated in op 94, t 17/12, but not the one presented in op 74.
Therefore, lectotype:
151/19. Java. D5aa. Dieng Plateau. Kawah Toxiwa.
Finder: 375-3-6.
N.B. In op 175, p 585, f 1593, Hustedt re-combines this taxon: Navicula
mutica forma intermedia (Hustedt) Hustedt.
74-7 Navicula kotschyi var. robusta Hustedt Plate 201/5-7
Op 74, t 370/34-36.
Validating diagnosis: A typo structura crassiore differt.
Marked, unnamed, specimens were found on two slides. Of these the following
is here chosen as lectotype:
209/63. Franz Josephs Land. Eismeer.
A strewn slide mounted by E. Thum, his no. 410,2.
Finder: 226.9; 284-2; 343,1-4; 460.2; 498.2; 556.4 (3 specimens), 586.4.
Isolectotype:
209/65. Franz Josephs Land. Eismeer.
Another Thum slide, his no. 410.1.
Finder: 373-4-

126
N.B. In op 175, P 603, f 1606, Hustedt synonymizes this taxon with
Navicula plausibilis Hustedt (see tx 175-4).
74-8 Triceratium sundbyense Hustedt Plate 203/1-2
Op 74, t 371/6.
Validating description: Valvae triangulares, angulis rotundatis, non pro-
tractis, marginibus trigibbis, lateribus circiter
80 urn longis.
Holotype:
H5/40. Moleer von Sundby (Jutld.).
A single mount made by Debes. Named on label.
N.B. The lines drawn by Hustedt in the valve face and which also appear
in the micrographs are contact lines between the Styrax mountant, the valve
and the gelatine into which the valve is partly sunk. These lines are
therefore no structural part of the valve as Hustedt's drawing suggests.
74~9 Triceratium subundosum Hustedt Plate 204/1-2
Op 74, t 371/7.
Description included in plate explanation.
Holotype:
H5/81. Ananino
A single mount with the illustrated specimen, named on the label.
N.B. The lines in the valve face drawn by Hustedt, which show also
in the micrographs, are artefacts, see the remarks at the last taxon.
74-10 Triceratium pileolus var. minuta Hustedt Plate 204/3-4
Op 74, t 371/9.
Validating diagnosis: Differt a Trie, pileolo Ehrenbergii var. pileolo
magnitudine humili, longitudo laterium circiter
24 urn.
Holotype:
H4/57• Archangelsk.
A single mount with the i-type, named on the label. - Unfortunately the
specimen lies with the valve face away from the observer.
N.B. Pencil note on the label in Hustedt's hand: "A.S.Atl. 111.26-29?"
These figures represent Trie, nobile Witt.
74-11 Triceratium trinitas var. stricta Hustedt Plates 205/1-3, 206/1-2
Op 74, t 372/1-2.
Validating diagnosis: A typo differt marginibus rectis.
Three slides exist, all single mounts with the taxon's name on the labels.
As lectotype is here chosen:
H5/61. Abashiri, Japan.
The i-type of f 2.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
127
Isolectotypes:
H5/62. Abashiri, Japan. H5/6O. Abashiri, Japan.
The i-type of f 1.
74-12 Triceratium gracile Hustedt Plate 207/1-3
Op 74, t 372/3.
Validating description: Valvae triangulares lateribus concavis, apicibus
rotundatis, sparsim areolatae, longitidine laterum
circiter 38 urn.
\ Holotype:
H2/45- Mejillones.
A mount with the two illustrated valves, named on the label.
74-13 Triceratium kolbei Hustedt Plate 208/1-2
Op 74, t 372/4.
Validating description: Valvae triangulares, apicibus rotundatis, lateri-
busque amoene concavis, eorum longitude circiter
132 urn.
Holotype:
H4/20. Kusnetzk.
A single mount with the i-type, named on the label.
74-14 Triceratium archangelskianum var. magnifica Hustedt Plate 209/1-4
Op 74, t 372/5.
Validating diagnosis: Triceratio archangelskiano Witti simile sed valvis
magis majoribus.
Holotype:
H2/73- Archangelsk.
Single mount named on the label.
74-15 Triceratium occultum Hustedt Plate 208/3-4
Op 74, t 372/6.
Validating description: Valvae triangulares, apicibus paulo acutis, lateri-
busque leviter concavis, eorum longitudo circiter
70 urn.
Holotype:
H4/48. Abashiri, J apan.
A single mount with the illustrated specimen, named on the label.
74-16 Triceratium varians Hustedt Plate 210/1-2
Op 74, t 372/7.
Validating description: Valvae triangulares, apicibus rotundatis, lateri-
busque rectis nonnumquam costatis, eorum
longitudo circiter 100-120 um.
There are two single mounts with names on the labels of which the
following is selected as lectotype:

128
H5/82. Sa. Monica.
The i-type of f 7.
Isolectotype:
H5/83. Sa. Monica.
74-17 Triceratium hannaianum Hustedt Plate 210/3-4
Op 74, t 372/8.
Validating diagnosis: Triceratio variante Hustedtii simile, sed marginibus
levissime concavis.
Holotype:
H4/2. Sa. Monica.
A single mount with the i-type, named on the label.
Op. 75* Diatomeen aus dem Feforvatn in Norwegen. Arch. Hydrobiol. 22,
537-545, 1931.
75-1 Achnanthes (montana Krasske var?) norvegica Hustedt Plate 211/1-7
Op 75, p 542, f 1-2. ("nov. var.").
Holotype:
Mal/83. Norwegen. Feforvatn. 4. 25-30 m.
Marked specimens named "Achnanthes holstii Cleve" on the label.
Finder: 366.9; 519.1; 577.2-3.
N.B, In op 79, P 399, Hustedt synonymizes this taxon with and includes
it in Achnanthes holstii Cleve.
Hustedt did not notice that the terminal fissures of the two raphe
branches point to opposite directions.
75-2 Cymbella aequalis forma undulata Hustedt Plate 211/8
Op 75, p 543 (no illustration).
Holotype:
191/4. Norwegen. Feforvatn. 2. an Steinen.
Marked, unnamed specimen.
Finder: 429-4-7.
75-3 Navicula stroemii Hustedt Plate 211/9-16
Op 75, P 544, f 3.
Holotype:
191/3. Norwegen. Feforvatn. 1. an Steinen.
Marked, unnamed specimens, often more than one in a circle.
Finder: 461.7; 468.6-9; 470.6; 471.8-9; 495-5-8; 496.6; 522.3; 559.1-4.
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaq!
129
Op. 76. Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 2, Lief. 1, 1-176, 1931.
76-1 Licmosphenia taylorii Hustedt Plate 25-27
Op 76, p 88, f 622.
We found two slides with marked specimens but not the one illustrated.
Lectotype:
58/7. Pola. 1906. 1301.
Finder: 440.8-9.
*
Isolectotype:
58/34. Pola. 1307.
Finder: 253-1 (a valve without septum).
76-2 Fragilaria atomus Hustedt Plate 211/19-24
Op 76, p 164, f 672B.
Hustedt recorded this taxon under its proper name only on a record draft
concerning slide no. "7924" (new number 80/24) from "Syndalen 70". The
slot of slide 80/24 is empty whereas 80/25 and 26 are Syndalen 70 slides.
The slide that was most probably in slot 24 was found in box 431/76. It
was made on the same day as the other two and is of the same glass with
- unusual for Hustedt - unground edges. The taxon is rather frequent on
all three slides, there are no marking rings. As lectotype I select now:
80/25. Synddalen. 70. Lagune. 25.7.23.
Isolectotypes:
80/26. Synddalen. 70. Lagune. 25.7-23-
431/76. Synddalen. 70. Lagune. 25-7-23-
76-3 Fragilaria constricta forma trinodis Hustedt Plate 211/17-18
Op 76, p 166, f 674f-
Holotype:
74/49- Tuohilampi-See, 2 m, 27.5.22. Finnland.
An unnamed specimen, originally marked with an ink-dot, which we rubbed
away during our work with this slide.
Finder: 285-5-8.
Op. 77- A. Schmidts Atlas der Diatomaceenkunde, Heft 94, t 373-376, 1931.
77-1 Gomphocymbella gracilis Hustedt Plates 212/1-3, 213/1-2
Op 77, t 373/1-2.
Validating description: Valvae falcatae, heteropolares, apicibus subacutis,
stigma in latere dorsali, 120-200 urn longae,
circiter 50 urn latae.

130
The taxon's name appears on the labels of three slides with picked
specimens. Lectotype:
Tl/3. Tanganikasee.
Two valves of which one may represent the illustrated specimen.
Isolectotype:
Tl/6. Tanganika See. 6.
Paralectotypes:
Tl/4. Tanganikasee. 1/2.
224/60. Tanganikasee 5 ob.
This latter is a strewn slide with a marked, unnamed specimen.
Finder: 458.3-
77-2 Cymbella grossestriata var. javanica Hustedt Plate 214/1-6
Op 77, t 373/8-9.
Description in op 98, p 425, t 26/1-4, where Hustedt introduces the new
combination Cymbella muelleri var. javanica (Hustedt) Hustedt.
The taxon's name is on the labels of two strewn slides on which it is
abundant, not marked. As lectotype is chosen:
T2/22. Java. R. Bedali. Wasserfall. KBlb.
Paralectotype:
T2/23. Java. R. Bedali, Gr. Badequelle. KB5k.
77-3 Cymbella alpinoides Hustedt Plate 213/3-8
Op 77, t 373/10-12.
Description in op 98, p 418, t 25/21-22.
The taxon's name is on the labels of two contemporaneous slides. One of
these contains the illustrated specimens and is therefore taken as
holotype:
Tl/32. Java.
Marked specimens.
Finder: 315.6 (i-type f 12); 375-4-5 (i-type f 10); 555-4 (i-type f 11).
The other slide:
Tl/31. Telaga Warna. Java. B5c.
The taxon is very frequent, not marked.
77-4 Cymbella placentula Hustedt Plate 216/1-2
Op 77, t 373/14.
Validating description: Valvae rhombiformes, levissime arcuatae, apicibus
rotundatis, non rostratis, longitudine circiter
38 urn, latitudine 27 M-m.
Holotype:
224/61. Tanganikasee. 5- ob.
Marked, unnamed specimen, the illustrated valve.
Finder: 257-8-9-
N.B. Note the peculiar course of the outer raphe fissures near the
valve ends which Hustedt did evidently not observe.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
131
77-5 Cymbella ruttneri Hustedt Plate 215/5-11
Op 77, t 373/39-44-
Description in op 87, p 164, t 5/33; see also op 98, p 421, t 25/4-6.
The taxon is nowhere marked or named. In addition, no contemporaneous slide
could be found. In accordance with the protologue in op 87 the following
slide is proposed as lectotype:
l6l/34. Sumatra. Tobasee. TD1.
The taxon is very frequent.
N.B. Krammer & Lange-Bertalot (Bacillariophyceae 2 (1), p 327, 1986)
j include this taxon as synonym in C. microcephala Grunow. The justification
of this appears to be doubtful.
77-6 Cymbella subturgida Hustedt Plate 215/1-2
Op 77, t 374/4.
Description in op 108, p 105.
Holotype:
T2/18. Mexiko, Suftwassersee.
Marked specimen named on label.
Finder: 430.2-3.
77-7 Cymbella triangulum var. gracilis Hustedt Plate 216/3
Op 77, t 374/5.
Validating diagnosis: A typo valvis cum apicibus leniter protractis differt
Holotype:
T2/30. Mexiko, Suftwassersee.
Marked specimen named on label.
Finder: 461.7.
77-8 Cymbella ornata Hustedt Plate 215/3-4
Op 77, t 374/6.
Validating description: Valvae late lanceolatae, modice arcuatae, apicibus
acutis, longitudine circiter 84 um, latitudine
25 um, area axialis punctis ornata.
Holotype:
T2/4- Columbia River, Oregon.
A slide with picked specimens, among them one frustule of Cymb. ornata,
name on the label.
77-9 Cymbella procera Hustedt Plate 216/4
Op 77, t 374/7-
Validating diagnosis: A Cymbella hauckii Van Heurckii habitu graciliore
valvisque majoribus differt.
Holotype:
T2/17. Columbia River, Oregon.
A single mount with the i-type, named on the label.
N.B. VanLandingham (Catalogue 3, PP 1223/1224, 1969) renames this

132
taxon: Cymbella neoprocera VanLandingham, because of Cymb. procera Pan-
tocsek & Greguss 1913 -
77-10 Cymbella turnida var. gracilis Hustedt Plate 216/5
Op 77, t 376/3.
Description in op 98, p 433, t 26/5-
Holotype:
T2/77. Tanganyika See. 6.
A single mount with the illustrated specimen-
Op. 78. Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 2, Lief. 2, 177-320, 1932.
78-1 Synedra utermoehlii Hustedt Plate 217/1-2
op 78, p 185, f 687.
Holotype:
Kl/10. Dobersdorfer S. 12.5.21.
An air mount with calcinated material. A colony is marked and named on
the label.
Finder: 4II.5. Another unmarked colony at 435-7•
78-2 Synedra distinguenda Hustedt Plate 2l8/l-8
Op 78, P 214, f 707.
As lectotype is here proposed:
K2/51. Pola, Valle lunga.
This slide says "Synedra" on the label, and there are several lacquer
circles which all contain Synedra laevigata Grunow. One of these circles
encloses also a valve fragment of Syn- distinguenda. Another, entire, valve
is situated just outside this same circle, partly below the lacquer, at
2 o'clock direction at finder position 372.5-8.
Finder position of the enclosed fragment: 401.2-5-
The only slide with a marked specimen of this taxon, named on the index
sheet, was made in 1959=
413/71b. Golf v. Neapel. Vervece. 50 m. 97a.
Finder: 644-3.
N.B. The valves have one labiate process at each end, in diagonal
pattern. We counted 44 striae in 10 urn, and it is doubtful that Hustedt
could have seen 45 in 10 urn as he states in op 78.
78-3 Synedra brockmannii Hustedt Plates 218/9-12, 219/1-4
Op 78, p 228, f 716.
There is only one slide in the collection bearing this taxon's name. It
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqweJ'rambler.
is a slide with three picked specimens between two Aulacodiscus valves
as markers. This slide was most likely not made by Hustedt who mounted
single specimens in perforated tin foils. Unfortunately there is no
locality given on the label, but it is said to be Recent marine.
Notwithstanding this shortcoming, I select it as the lectotype:
K2/42. Fundort?
There is another slide containing marked specimens of this taxon, on the
label is noted in pencil, "Synedra fulgens/n. spec", the latter evidently
referring to our taxon which is frequent, in the lacquer circles as well
as outside, along with Synedra fulgens:
, Kl/33. Dalmatien. 3034-
N.B. I have so far been unable to locate any labiate process at the
ends.
78-4 Eunotia denticulata var. fennica Hustedt Plate 217/3-7
Op 78, p 291, f 757e-i.
Holotype:
Ll/39- Finnland, 0-Fu0 des Wuokatti, Sphagnumsumpf.
The right label bears only the species name, but only the var. fennica
is on the slide; it is frequent and not marked.
Op. 79- Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 2, Lief. 3, 321-432, 1933-
79-1 Cocconeis diruptoides Hustedt Plate 219/5-14
Op 79, p 356, f 810.
The taxon is frequent in the material quoted by Hustedt. No marked
specimens exist, nor is its name noted anywhere. There are several individuals
in a circle, made to mark Mastogloia splendida, on the following slide
which is designated as lectotype:
58/77. Grotte auf Ravnik b. Lissa. Juli 04- 1150.
Finder: 229.8-9.
79-2 Achnanthes austriaca var. helvetica Hustedt Plate 220/1-9
Op 79, p 385, f 831g-k.
Holotype:
Mal/12. Kl. Fliielasee. 135- Grund. Davos. Schweiz.
The taxon's name is on the label, it is frequent and not marked.
79-3 Achnanthes lemmermannii Hustedt Plate 220/10-12
Op 79, P 390, f 837.
Of the two slides containing marked - though unnamed - specimens, I select

134
as lectotype:
212/70. An Hypnum bei Borgfeld. 1910. 1200.
Finder: 651-3-
The initially present lacquer ring is more or less rubbed away.
Isolectotype:
212/73. An Hypnum bei Borgfeld. 1910. 1199.
Finder: 583*3 (rapheless valve).
79-4 Achnanthes orientalis Hustedt Plate 220/13-17
Op 79, p 390, f 838.
Holotype:
62/5. Kiathane-Fluft. Bosporus. 2.5. 4105-
Marked, unnamed specimen.
Finder: 490-3 (i-type f 838 left); unmarked specimen at 375-1-4.
N.B. VanLandingham (Catalogue 1, p 54, 1967) renames this taxon: Achn.
triconfusa VanLandingham, because the epithet is occupied by Petit 1904-
79-5 Achnanthes laterostrata Hustedt Plate 220/18-26
Op 79, p 392, f 840.
Holotype:
Ma2/l4- Schwarzsee. 126; Grund. Davos. Schweiz.
The taxonj named on the label, is frequent, unmarked.
Paratype:
P3/48. Schwarzsee. 38. Grund. Davos. Schweiz.
One marked specimen named on index sheet.
Finder: 519.9.
79-6 Achnanthes stroemii Hustedt Plate 220/30-34
Op 79, P 393, f 84IB.
There are three slides with marked specimens, the two first-cited with
names on index sheets, the last one recording only "Achn." As lectotype
I designate:
199/93. Nordasot. 87 m. A. Norwegen. 1. ("Nordasot" = misread Nordasvatn)
Finder: 285.4 (two almost coinciding circlets with 2 specimens); 314-4-7
(i-type f 841B).
Isolectotypes:
199/94. Nordasot. 87 m. A. Norwegen. 2.
Finder: 376.8-9.
199/99. Nordasot. 87 m. A. Norwegen.,9.
Finder: 380.1-4; 463-2-3.
N.B. Ross (Bull. Brit. Mus. (Nat. Hist.) Bot. 3, p 72, 1963) has shown
that Hustedt's taxon is conspecific with Achn. fimbriata (Grunow) Ross.
79-7 Achnanthes lapidosa var. lanceolata Hustedt Plate 220/27-29.
Op 79, P 401, f 852d-f.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
135
Holotype:
P3/48. Schwarzsee, 38. Grund. Davos. Schweiz.
Marked specimen named on index sheet.
Finder: 489-1-2 (i-type f 852d).
79-8 Achnanthes subsalsoides Hustedt Plate 22l/l-4
Op 79, p 402, f 853B.
Holotype:
199/93- Nordasot. 87 m. A. Norwegen. 1. ("Nordasot" = misread Nordasvatn)
\ Marked, unnamed specimen.
Finder: 554-9.
79-9 Achnanthes levanderi Hustedt Plate 221/9-12
Op 79, P 404, f 856.
As lectotype is proposed:
N12/84. See am Ostfufi des Wuokatti, Finnland.
Two specimens in the same circle, named on index sheet.
Finder: 403.2.
Isolectotype:
Ma2/60. See am Ostfufi des Wuokatti, Finnland.
Marked specimen, unnamed.
Finder: 434.6.
79-10 Achnanthes levanderi var. helvetica Hustedt Plate 221/13-18
Op 79, P 404, f 856B.
Holotype:
N4/97. Totalpsee, Ufer. Davos. 146.
Marked specimen named on label.
Finder: 431.4-
Further slide with marked specimens named on index sheet:
P3/48. Schwarzsee. 38. Grund. Davos. Schweiz.
Finder: 549.6 (2 specimens).
79-H Achnanthes didyma Hustedt Plate 221/19-28
Op 79, P 405, f 857.
As lectotype is designated:
Mal/53. Schwarzsee. 38. Grund. Davos. Schweiz.
Marked specimens named on label.
Finder: 311-4-7; 342.2-5; 372.7; 490.3; 551.6-9-
Further specimen cited in the protologue:
N12/84. See am Ostfuft des Wuokatti, Finnland.
Marked specimen named on index sheet.
Finder: 316.2.

136
79-12 Achnanthes lutheri Hustedt Plate 221/5-8
Op 79, p 405, f 858.
Holotype:
76/6. Pellonkylatrask. Carexschlamm. 9-8.23.
Marked, unnamed specimen.
Finder: 285.2.
79-13 Achnanthes suchlandtii Hustedt Plate 221/29-37
Op 79, p 406, f 859B.
As lectotype is selected:
Ma2/86. Schwarzsee. 38. Grund. Davos. Schweiz.
Marked specimens named on label.
Finder: 3H-8; 489-3-6; 519-3; 521.3-6.
Isolectotype:
P3/48. Schwarzsee. 38. Grund. Davos. Schweiz.
Marked specimens named on index sheet.
Finder: 313-5-8; 490.5-8; 519-9; 549-6; 525-2.
Op. 80. Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 2, Lief. 4, 433-576, 1933-
80-1 Mastogloia splendidula Hustedt
Op 80, p 468, f 886.
Holotype:
Zt2/65- Miang Besar. Borneo. 2.
Marked, unnamed specimen.
Finder: 313-9.
80-2 Mastogloia ovulum Hustedt Plate 222/1-11
Op 80, p 474, f 892.
There is one slide with a marked specimen named on an index sheet, from
Lissa. But this specimen does not agree with Hustedt's illustrations.
Therefore I select as lectotype:
66/88. Miang Besar, Borneo.
Three marked, unnamed specimens in the same circle.
Finder: 500.5 (one specimen is i-type f 892 upper right, another is i-type
of f 892 lower right).
Isolectotype:
66/89. Miang Besar, Borneo.
Two marked, unnamed specimens in the same circle.
Finder: 467.5.
The slide with the above-mentioned questionable specimen:
Plate 221/38-40
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
137
Rl/l. Grotte auf Ravnik bei Lissa. a.
Marked specimen named "M. ovulum" on index sheet.
Finder: 435-8.
80-3 Mastogloia subaspera Hustedt Plate 221/41-42
Op 80, p 478, f 898.
So far we found only one specimen that can be attributed to this taxon.
It is unnamed and in a circle with Mast, smithii. For the time being this
specimen is chosen as lectotype:
\ Rl/l. Grotte auf Ravnik bei Lissa. a.
Finder: 411-6.
80-4 Mastogloia sublatericia Hustedt Plate 222/12-15
Op 80, p 479, f 900.
There are two slides with marked specimens named on the labels. Of these
I select as lectotype:
R2/23- Manilla. 38.
Finder: 349-7-8 (i-type f 900 left).
The second slide:
R2/30. Funafuti. 1.
Finder: 465-1-
80-5 Mastogloia asperuloides Hustedt Plate 223/1-2
Op 80, p 482, f 902.
So far we could find only one marked, unnamed specimen of this taxon which
must therefore constitute the type:
Zt2/65. Miang Besar. Borneo. 2.
Finder: 501.9 (i-type f 902a).
80-6 Mastogloia delicatissima Hustedt Plate 222/16-19
Op 80, p 482, f 903.
We can offer two marked specimens, named "Mast." on the index sheet, that
can be combined with this taxon. Holotype:
Zt2/65- Miang Besar. Borneo. 2.
Finder: 371-1-4; 554-5 (i-type f 903).
80-7 Mastogloia tenuissima Hustedt Plate 222/20-22
Op 80, p 486, f 908.
Holotype:
Rl/3. Seychellen.
Marked specimen named on index sheet.
Finder: 377-7.

138
80-8 Mastogloia varians Hustedt Plate 223/3-6
Op 80, p 486, f 909-
As lectotype is chosen:
R2/6la. Funafuti. 2.2.
Marked, unnamed specimens.
Finder: 283.5-6; 313-5-6; 459-3-
Isolectotype:
R2/67a. Funafuti. 2. Sudsee.
Marked, unnamed specimen.
Finder: 527.2.
80-9 Mastogloia subaffinis Hustedt Plate 223/7-8
Op 80, p 488, f 911.
Holotype:
R2/12. Campeche Bay. 66.a.
Marked specimen named on the label.
Finder: 407-2.
80-10 Mastogloia campechiana Hustedt Plate 223/9-12
Op 80, p 489, f 912.
Holotype:
R2/12. Campeche Bay. 66.a.
Marked specimen named on the label.
Finder: 441-4-
80-11 Mastogloia minima Hustedt Plate 223/13-15
Op 80, p 490, f 913-
Holotype:
113/20. Funafuti. Sudsee. 2.
Marked, unnamed specimen.
Finder: 404-8-9-
80-12 Mastogloia dissimilis Hustedt Plate 224/3-7
op 80, p 492, f 916.
As lectotype is chosen:
431/73- Seychellen. 1.
Marked, unnamed specimen.
Finder: 562.8 (i-type f 916 right).
Isolectotype:
Rl/3- Seychellen.
Marked, unnamed specimen.
Finder: 588.7.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
139
80-13 Mastogloia lata Hustedt Plate 225/1-2
Op 80, p 494, f 918.
Holotype:
Zt2/65. Miang Besar. Borneo. 2.
Marked, unnamed specimen.
Finder: 345-2.
80-14 Mastogloia tenera Hustedt Plate 223/16—18
» Op 80, p 494, f 919-
We found only one marked, unnamed, specimen which fits into Hustedt1s
description and must therefore be considered as the type:
Zt2/65- Miang Besar. Borneo. 2.
Finder: 432.9 (i-type f 919 left).
N.B. This taxon is possibly conspecific with Mastogloia delicatissima
Hustedt, see tx 80-6.
80-15 Mastogloia gigantea Hustedt Plate 224/1-2
Op 80, p 499, f 925.
Holotype:
R2/28. Campeche Bay. 68.b.
Marked specimen named on the label.
Finder: 502.2.
80-16 Mastogloia decipiens Hustedt Plate 225/3-5
op 80, p 504, f 929.
We found only one specimen that can, perhaps, be connected with this taxon.
It is marked, along with others, and not named.
R2/l00b. Grotte auf Ravnik bei Lissa. Juli 04.
Finder: 412.5.
80-17 Mastogloia ignorata Hustedt Plate 225/6-8
Op 80, p 506, f 932.
Hustedt never gave sufficient and conclusive differences between Mastogloia
smithii, M. decipiens, and M. ignorata. As a matter of fact, the index
sheet of a slide containing material from Ravnik near Lissa (Ri/l), one
of the type localities given by Hustedt, names two specimens "M. smithii"
which may also belong to one of the two other taxa. For these reasons I
quote here - as lectotype - only one specimen which Hustedt very probably
combined with M. ignorata:
428/30. Sur algues. Castellamare. Naples. 4000.
This slide was mounted by J. Brun and contains M. punctifera Brun. Mastogl.
ignorata is marked by a lacquer ring, but not named.
Finder: 281.5 (i-type f 932 left?).

HO
80-18 Mastogloia gracilis Hustedt Plate 225/11-15
Op 80, p 507, f 933.
Holotype:
Zt5/40. Funafuti. Sudsee. 2.1.
Marked specimens named "Mastogl." on the index sheet.
Finder: 288.8-9 (i-type f 933 right); 312.8 (two specimens in the same
circle, one of them is the i-type of f 933 centre).
80-19 Mastogloia graciloides Hustedt Plate 225/9-10
Op 80, p 508, f 934-
Holotype:
Rl/3. Seychelles
Marked specimens named on index sheet.
Finder: 399*3 (too oblique for photography); 519-4-7•
80-20 Mastogloia regula Hustedt Plate 226/1-2
op 80, p 508, f 935.
Holotype:
R2/6la. Funafuti. 2.2.
Marked specimen, unnamed.
Finder: 279-4-5 (i-type f 935 right).
80-21 Mastogloia achnanthioides var. elliptica Hustedt Plate 226/3-8
Op 80, p 510, f 937d.
Holotype:
R2/54a. Ovalau. 1. Sudsee.
Marked, unnamed specimen.
Finder: 437-2 (i-type).
Isotype:
R2/6lb. Ovalau. 1. Sudsee.
Marked, unnamed specimen.
Finder: 286.6.
80-22 Mastogloia angusta Hustedt Plate 226/9-14
op 80, p 512, f 940.
Holotype:
Rl/89. Morris Cove, Conn. U.S.A.
Marked specimens, unnamed.
Finder: 343-5 (i-type f 940 right); 528.8; 621.4 (i-type f 940 left).
80-23 Mastogloia densestriata Hustedt Plate 226/15-18
Op 80, p 513, f 941-
No marked or named specimen of this taxon could be found. However, we
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwearambler.ru
141
succeeded in locating one unmarked specimen which evidently belongs here
and may be considered as lectotype:
Zt2/64- Miang Besar. Borneo. 1.
Finder: 495*7-8.
80-24 Mastogloia parva Hustedt Plate 227/1-4
Op 80, p 513, f 942.
Holotype:
Zt2/65. Miang Besar. Borneo. 2.
Marked, unnamed specimen.
Finder: 404.1-2.
N.B. Simonsen (Meteor Forsch.-Ergebn. ser D 19, p 40, 1974) synonymizes
this taxon with and includes it in M. minuta Greville.
80-25 Mastogloia oblonga Hustedt Plate 227/7-10
Op 80, p 514, f 944-
Holotype:
Zt2/89. Labuan. Borneo.
Marked, unnamed specimen.
Finder: 469.2.
80-26 Mastogloia staurophora Hustedt
Op 80, p 514, f 945-
Holotype:
Rl/4- Seychelles
Marked specimen named on index sheet.
Finder: 375-1-
Isotype:
Rl/3. Seychellen.
Marked specimen named on index sheet.
Finder: 463.8.
80-28 Mastogloia laterostrata Hustedt
Op 80, p 516, f 948.
Holotype:
R2/25- Upolu. 4- Samoa.
Marked specimen named on the label.
Finder: 409.3.
Plate 227/13-18
Plate 227/11-12
80-27 Mastogloia acutiuscula var. elliptica Hustedt Plate 227/5-6
Op 80, p 516, f 947c-d.
Only one of the two illustrated specimens could be found, it is marked
but not named. Holotype:
Zt2/65. Miang Besar. Borneo. 2.
Finder: 352.1-2 (i-type f 947d).

142
80-29 Mastogloia labuensis var. lanceolata Hustedt Plate 227/19-20
Op 80, p 518, f 950c.
We have not been able to locate a marked specimen of this nowhere named
taxon. As lectotype is therefore chosen:
R2/67a. Funafuti. 2. Sudsee.
Finder position of the unmarked specimen: 373*1-2 (just above the circle).
80-30 Mastogloia robusta Hustedt Plate 228/1-4
Op 80, p 518, f 951.
No marked or named specimen could be located. As lectotype is selected:
Zt2/64. Miang Besar. Borneo. 1.
Two specimens at finder positions 345.7 and 499-7-8.
80-31 Mastogloia pseudoparadoxa Hustedt Plate 229/1-3
Op 80, p 521, f 954.
The illustrated specimen could not be found. As lectotype is here chosen:
Zt2/72b. Miang Besar. Borneo.
Marked, unnamed specimen.
Finder: 257.8.
Another unnamed specimen .found lacks the partectal ring:
Zt5/l• Sabang, W von Sumatra. 1.
Finder: 405.3-
80-32 Mastogloia similis Hustedt Plate 229/4-9
Op 80, p 522, f 955-
As lectotype is selected:
R2/50b. Miang Besar. Borneo.
This is a single mount the cover of which is too thick for high-power
objectives. The specimen is simply named "Mastogloia" on the label.
A specimen very similar to the one illustrated by Hustedt, though unmarked
and unnamed, was found on the following slide and is an isolectotype:
N14/96. Miang Besar. Borneo.
Finder: 194.3-
80-33 Mastogloia subacuta Hustedt Plate 230/1-4
Op 80, p 523, f 957.
Holotype:
Rl/4. Seychell en.
Marked specimens named on index sheet.
Finder: 373-5-6; 432.6-9; 461.4 (i-type f 957 right).
80-34 Mastogloia subaffirmata var. angusta Hustedt Plate 228/5-9
Op 80, p 527, f 960g.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
143
We were unable to locate a marked specimen of this taxon which is frequent
on the Miang Besar slides. An unmarked and, of course, unnamed specimen
very similar to the one illustrated by Hustedt is here selected as
lectotype:
Zt2/78. Miang Besar. Borneo.
Finder: 429-3-
Another unmarked specimen ~ isolectotype - was found on:
Zt2/72b. Miang Besar.
Finder: 501.5-
N.B. Our specimens have a hyaline zone, without any structure, along
»the valve face - valve mantle edge upon the valve face.
80-35 Mastogloia rigida Hustedt Plate 230/8-9
Op 80, p 531, f 964.
Holotype:
R2/22. Honduras. I.
Marked specimen named on label.
Finder: 341-3-
80-36 Mastogloia multicostata Hustedt Plate 231 /l-3
op 80, p 532, f 965.
Holotype:
R2/65- Honduras. c.
Marked, unnamed specimen.
Finder: 497-8.
80-37 Mastogloia frickei Hustedt Plate 230/5-7
Op 80, p 534, f 967-
Holotype:
R2/62. Seychellen. 1.
Marked, unnamed specimen (in very oblique position).
Finder: 403-4-
8O-38 Mastogloia meisteri Hustedt Plate 231/4-6
Op 80, p 537, f 970.
Holotype:
R2/22. Honduras. I.
Marked specimen named on label.
Finder: 6l8.2.
80-39 Mastogloia strigilis Hustedt Plate 232/1-4
Op 80, p 541, f 974-

144
Holotype:
R2/92a. Cebu. 10a.
Marked, unnamed specimen.
Finder: 379.5.
80-40 Mastogloia elegantula Hustedt
Op 80, p 541, f 975-
Holotype:
R2/27. Andamanen Insel. 5a.
Marked specimen named on label.
Finder: 405.6.
80-41 Mastogloia vasta Hustedt
Op 80, p 553, f 984.
Holotype:
Zt2/65. Miang Besar. Borneo. 2.
Marked, unnamed specimen.
Finder: 341.9-
80-42 Mastogloia exilis Hustedt
Op 80, p 553, f 985.
Holotype:
Zt2/6o. Miang Besar. Borneo. 3*
Marked, unnamed specimens, 1 valve
ring, in same circle.
Finder: 403.1-4-
80-43 Mastogloia depressa Hustedt
Op 80, p 554, f 986.
Holotype:
Rl/3- Seychellen.
Marked specimen named on index sheet.
Finder: 580.2; 614-7-8.
80-44 Mastogloia impressa Hustedt
Op 80, p 555, f 987-
Holotype:
R2/30. Funafuti. 1.
Marked specimen named on the label.
Finder: 463.2.
80-45 Mastogloia baculus Hustedt
op 80, p 564, f 998.
Plate 233/1-2
Plate 232/5-6
Plate 233/9-13
fragment and a valve with partectal
Plate 233/14-18
Plate 233/7-8
Plate 232/7-8
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
145
Holotype:
W6/l7- Ovalau. 1. Sudsee.
Marked, unnamed specimen.
Finder: 583-4.
N.B. The specimen is laterally compressed and consequently deformed.
I have the impression that it was originally of linear-elliptic outline.
This taxon should be treated with some reservation.
80-46 Mastogloia gomphonemoides Hustedt Plate 234/8-13
; op 80, p 568, f 1001.
Holotype:
R2/6la. Funafuti. 2.2.
Marked, unnamed specimens.
Finder: 310.1-2 (i-type f 1001 left); 310.8-9 (i-type f 1001 right); 373-6.
80-47 Mastogloia pusilla var. subcapitata Hustedt Plate 233/3-6
Op 80, p 569, f 1002e.
Holotype:
Zt2/65- Miang Besar. Borneo. 2.
Marked, unnamed specimens.
Finder:'431.2; 524-9 (i-type?).
8O-48 Mastogloia tenuis Hustedt Plate 234/14-17
Op 80, p 570, f 1004-
Holotype:
Zt2/65. Miang Besar. Borneo. 2.
Marked, unnamed specimen.
Finder: 431-9.
80-49 Mastogloia mediterranea Hustedt Plate 234/1-7
Op 80, p 570, f 1005-
There are several specimens of this otherwise nowhere named taxon enclosed
by circles on different slides, perhaps partly accidentally. Within the
presently treated Rabenhorst instalment Hustedt generally means his Lissa
slides when talking of the "nordliche Adria". Therefore I select the
following as lectotype:
R2/l00b. Grotte auf Ravnik bei Lissa. Juli 04-
Finder: 56O.9.
Isolectotypes:
M2/61. Grotte auf Ravnik bei Lissa. Juli 04-
Finder: 439-5-
Ul/44- Grotte auf Ravnik bei Lissa. Juli 04-
Finder: 493-1-2.

146
Op. 8l. A. Schmidts Atlas der Diatomaceenkunde, Heft 96, t 38I-384, 1933.
8l-1 Eunotia didyma var. recurvata Hustedt Plate 235/1-7
Op 81, t 381/9-10.
Description in op 93, P 175•
There are two single mounts representing the two illustrated specimens,
with names on the labels. Of these the following may be the lectotype:
L3/8. Sgei Sangatta. Borneo.
The i-type of f 10.
Isolectotype:
L3/9. Sgei Sangatta. Borneo.
The i-type of f 9.
Further slide:
L3/7. Bach. Subang-Paft. Sumatra. SKBla.
Marked specimen named on label.
Finder: 522.7-
This is the i-type of tl2/22 in op 93-
N.B. In op 93, p 175, t 12/22, Hustedt raises this taxon to species
rank: Eunotia recurvata (Hustedt) Hustedt.
8l-2 Eunotia praerupta var. thermalis Hustedt Plate 236/1-2
op 81, t 381/11.
Description in op 93, p 164, t 11/12.
Holotype:
L2/93- Java, Tjibodas, heiGe Quellen. Ajer Panas. TJ7d.
Marked specimen named on the label.
Finder: 492.8-9-
81-3 Eunotia lata Hustedt Plate 234/18
Op 81, t 381/12.
Validating description: Valvae leviter arcuatae, trigibbae, latissimae,
apicibus obtusis, longitudine circiter 70 um,
latitudine 29 urn.
Holotype:
L2/26. Atlantic City. N.A.
A single mount with name on the label.
81-4 Eunotia (trigibba var.?) paucistriata Hustedt Plate 236/3-5
op 81, t 381/13.
Validating diagnosis: Eunotiae trigibbae Hustedtii similis sed valvis
paulae striae sunt,
Holotype:
L3/92. Demerara-River.
A single mount named on the label "Eunotia trigibba v. paucistriata."
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej':
147
81-5 Eunotia sendaiensis Hustedt ' Plate 237/1-6
Op 81, t 381/14-17.
Validating description: Valvae lineari-lanceolatae, leniter arcuatae,
apicibus late obtuseque protractis, circiter
60-82 urn longae, 13-16 um latae.
Holotype:
L3/38. Sendai - Japan. Lignit.
A slide with the four illustrated specimens picked, name on the label,
, 81-6 Eunotia oestrupii Hustedt Plate 236/6-8
* Op 81, t 381/18.
Validating diagnosis: Eunotiae robustae Ralfsii similis, sed cum valvis
bigibbis.
Holotype:
L2/56. Siam. Klong Prao. Wasserfall.
Marked specimen named on label.
Finder: 594-8.
81-7 Eunotia sulcata Hustedt Plate 238/1-5
Op 81, t 381/29-33.
Description in op 93, p 173, tll/7-9-
Holotype:
L3/75- Java, Dieng-Plat. Telaga Warna. D2aa.
Marked specimens named on label.
Finder: 313-6 (i-types f 30 and 32); 409-5 (i-type f 29); 462.2-5 (i-type
f 31); 469.4 (i-type f 33).
8l-8 Eunotia subaequalis Hustedt Plate 239/1-7
op 81, t 382/5-10.
Description in op 93, p 170, t 12/1-4.
Holotype:
L3/55- Java, Buitenzorg. Quellrinnsal. B2fa.
The taxon is not marked, frequent, named on label.
8l-9 Eunotia similis Hustedt Plate 239/8-15
Op 81, t 382/11-24.
Description in op 93, p 165, t 12/5-8.
There are two slides with marked specimens named on the labels, from the
two localities named in op 8l. Of these the following is selected as
lectotype:L3/52. Java, Gunung Lawu, Quelle, an Moos. SLa.
Finder: 3U.5-8; 316-7; 348.4-5; 400.2-3; 410.3; 462.7-8; 557-2-3 (i-type
fig. 24).
Further slide:
L3/51. Java, Tjibodas. TJ71a.
Finder: 375-2-3; 401.1.

148
81-10 Eunotia fastigiata Hustedt Plate 240/8-16
Op 81, t 382/25-32.
Description in op 93, p 168, t 12/13-18.
Holotype:
Ll/88. Java, Telaga Warna. D2b.
The taxon is abundant, not marked, named on the label.
81-11 Eunotia levistriata Hustedt Plate 240/1-7
Op 81, t 382/33-38.
Description included in plate explanation; see also op 93, p 167•
Holotype:
L2/29. Sumatra, R4e- Ranau-See.
Marked specimens named on the label, partly more than one in a circle.
Finder: 404.8; 432.1; 463-9; 497.8-9; 522.3.
The taxon occurs virtually purely on two further slides with material cited
in op 93j p 168. Specimens were photographed from the following:
L2/28. Sumatra, TWlgg. Samosir. Tobasee. Solfatarenfeld.
81-12 Eunotia dissimilis Hustedt Plate 240/17-19
Op 81, t 382/101-102.
Description in op 93, P I64, t ll/lO-ll.
Holotype:
153/70. Java. B5c. Telaga Warna, an Steinen.
Marked, unnamed specimens.
Finder: 250.7 (i-type f 102); 253-4 (i-type f 101).
N.B. The illustrations of these two specimens are more exact in op
93, t 11/10-11, also in size.
Op. 82. Die Diatomeenflora von Poggenpohls Moor bei Dotlingen in Oldenburg.
Abh, u. Vortr. Bremer Wissensch. Ges. 8/9, 362-403, 1934-
82-1 Achnanthes exigua var. capitata Hustedt Plate 241/21-24
Op 82, p 377, f 8-9.
Holotype:
N2/49• Poggenpohls Moor. Dotlingen. 77-
Marked, unnamed specimens.
Finder: 346.3-6; 409-4-5-
N.B. Handwritten note in Hustedt's proof copy of "Kieselalgen", vol
2, p 387 (in the possession of RS): "Achn. exigua var, capitata Hust.
Pogg. Moor -> A. exigua var. heterovalvata."
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
149
82-2 Achnanthes subexigua Hustedt Plate 241/l-H
Op 82, p 377, f 5-7-
Holotype:
Ma2/82. Poggenpohls Moor. Dotlingen. 51. Hypnum.
The taxon is not marked, very frequent, named on the label.
82-3 Achnanthes delicatula var. robusta Hustedt Plate 241/31-32
Op 82, p 378, f 1-2.
J Holotype:
Mal/50. Poggenpohls Moor. Dotlingen. 74.
Marked specimen named on the label.
Finder: 554-5-8.
N.B. Handwritten note in Hustedt's proof copy of the "Kieselalgen",
vol. 2, p 390 (in the possession of RS): "A. delicatula v. robusta
* A. delicatula."
82-4 Achnanthes kryophila var. densestriata Hustedt Plate 241/12-20
Op 82, p 378, f 3-4.
Holotype:
P2/19- Poggenpohls Moor. Dotlingen. Moos. 56.
Marked specimens named "Achnanthes" on label.
Finder: 371-6-9 (2 specimens); 433-7-
82-5 Stauroneis montana var. lanceolata Hustedt Plate 241/25-28
Op 82, p 381 (no illustration).
Holotype:
N4/90. Poggenpohls Moor. Dotlingen. 74.
Marked specimens named "Staur. montana Kr." on label.
Finder: 430.8; 439-9 (2 specimens); 490.5-8.
N.B. In op 107, p 72, f 48-49, Hustedt gives another description of
this taxon, erroneously also as "nov. var." - In op 166, p 801, Hustedt
transfers this taxon as variety to St. thermicola (J.B. Petersen) Lund,
with which latter he synonymizes St. montana Krasske.
82-6 Navicula brockmannii Hustedt Plate 241/29-30
Op 82, p 382, f 11.
Holotype:
Nl/75. Poggenpohls Moor. Dotlingen. 78.
Marked specimen named on label.
Finder: 411-3-
82-7 Navicula subfossalis Hustedt Plate 241/37-40
0p 82, p 383, f 14-15.

150
Two slides contain marked specimens named on the labels. Of these tl
following is proposed as lectotype:
N4/44. Poggenpohls Moor. Dbtlingen. Moos. 54-
Finder: 407.6; 462.2; 468.1-2 (2 specimens).
Paralectotype:
N8/16. Poggenpohls Moor. Dbtlingen. 50. Hypnum a. Salix.
Finder: 229.2; 292.2-5.
N.B. In op 171, p 166, f 1299, Hustedt synonymizes this taxon with
and includes it in Navicula fossalis Krasske.
82-8 Navicula declivis Hustedt Plate 241/33-36
Op 82, p 384, f 12.
Two slides have marked specimens named on the labels. The following is
selected as lectotype:
N2/45. Poggenpohls Moor. Dotlingen. 74.
Finder: 288.7; 465-5; 473.4;
Paralectotype:
N2/44. Poggenpohls Moor. Dotlingen. 77-
Finder: 433-6-9-
(82-9 Navicula lagerstedtii var. palustris Hustedt)
Op 82, p 385 (no illustration).
This taxon was simultaneously published (also as Hnov. var.H) in op. 84,
t 400/27-29. See tx 84-44-
82-10 Navicula subcostulata Hustedt Plate 241/41-44
Op 82, p 386, f 13.
Holotype:
N2/49. Poggenpohls Moor. Dbtlingen. 77-
Marked specimens named on the label.
Finder: 375.9 (the i-type and another valve); 439-9; 530.7.
82-11 Nitzschia palustris Hustedt Plate 242/1-6
Op 82, p 395, f 17-19.
The following lectotype is here designated:
Wl/41. Poggenpohls Moor. Dbtlingen. Moos. 55.
Marked specimens named on label.
Finder: 520.8; 590.5-
Paralectotypes:
W2/62. Poggenpohls Moor. Dbtlingen. 77-
The taxon is unmarked, frequent, named on the label.
N2/49. Poggenpohls Moor. Dbtlingen. 77-
Marked, unnamed specimens.
Finder: 495-5-8; 552.5-8 (2 specimens).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
151
N7/73- Poggenpohls Moor. Dotlingen. 75.
Marked specimen named on the label.
Finder: 349-4*
Op. 83. A. Schmidts Atlas der Diatomaceenkunde, Heft 97-98, t 385-392. 1934
83-1 Pinnularia triumvirorum Hustedt Plates 242/7-8, 243/1-2
* Op 83, t 385/3-4-
Description in op 94, p 290, t 21/1-2.
Holotype:
P3/96. Java. Ranu Lamongan. Quelle.
A slide with a few picked specimens, among them the illustrated ones.
83-2 Pinnularia triumvirorum var. linearis Hustedt Plate 243/5
Op 83, t 385/1.
Description in op 94, p 291, t 21/4.
There is one slide with the taxon's name on the label:
P3/97. Java. Wasserfall des Pasergede. SWlg.
However, no specimen is marked, nor does the slide contain a specimen that
is sufficiently similar to this taxon. Other slides from the same locality,
the only one named in the protologue, were also searched, also without
success. Therefore we cannot present any type here.
83-3 Pinnularia triumvirorum var. ventricosa Hustedt Plate 243/3-4
Op 83, t 385/2.
Description in op 94, p 291, t 21/3.
The taxon's name appears, along with that of the preceding one, on the
label of one slide. Also in this case we were unable to locate a specimen
which looked appreciably similar to Hustedt's illustrations. The slide:
P3/97- Java. Wasserfall des Pasergede. SWlg.
On another slide containing the same material a specimen was found that
is more or less similar to Hustedt's drawings, although a substantial
difference from the species is difficult to make out:
150/H. Java. SW.l.g. Wasserfall des Pagargede. (sic!)
Finder position of the unmarked specimen: 464.8.
I cannot consider this specimen as lectotype.
83-4 Pinnularia caloneiformis Hustedt Plate 244/1-2
Op 83, t 385/8
Description in op 98, p 397, t 23/6.
Holotype:
Pl/49* Fischteich am Puntjakpass, Java. B6a.
Marked specimen named on label.
Finder: 284.4-7-

152
83-5 Pinnularia similis Hustedt Plate 244/3-5
Op 83, t 385/10-12.
Description in *op 94, P 291, t 23/12-13-
Marked, unnamed specimens occur on two slides of which the following is
proposed as lectotype:
152/79. Java. TJ7m. Ajer Panas.
Finder: 462.4 (i-type f 11).
Isolectotype:
152/80. Java. TJ7m. Ajer Panas.
Finder: 461.2-5 (i-type f 10).
83-6 Pinnularia controversa Hustedt Plate 244/6-10
Op 83, t 385/16-17.
Description included in plate explanation. See also op 98, p 400, t 23/4-5-
Holotype:
Pl/58. Sumatra. Sawah bei Banding Agung.
Marked specimens named on the label.
Finder: 403-4; 520.1; 645.1-2.
83-7 Pinnularia leptosoma var. gracilis Hustedt Plate 245/1-4
Op 83, t 385/18-20.
Description in op 94, P 287, t 23/10-11.
Holotype:
P2/80. Java. Ajer Panas. TJ7i.
Marked specimen named on the label.
Finder: 406.1-4; another unmarked specimen at 466.1,
83-7a Pinnularia borealis var. elegans Hustedt Plate 245/5-6
Op 83, t 385/26.
Description in op 98, p 394, t 21/5-6.
Holotype:
153/50. Java. B7bB. Sindanglaja, Quelltumpel.
Marked, unnamed specimen.
Finder: 614-5.
83-8 Pinnularia borealis var. undulata Hustedt Plate 246/1-2
op 83, t 385/27.
Description in op 98, p 393•
No slide from the type locality with marked specimens of this taxon exists,
and we were unable to locate an unmarked specimen on these slides. Hustedt
did mark, however, specimens from another locality which, on the other
hand, is omitted in his records in op 98. The specimens are not only marked
but also named on the labels. One of these is here designated as neotype:
Pi/36. Ajer Panas. Tjibodas. Java. TJ71a.
Finder: 494-5-8.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
153
Isoneotype:
Pl/32. Java. Tjibodas. Ajer Panas - Quelle. TJ71a.
Finder: 494-4-
83-9 Pinnularia borealis var. rectangulata Hustedt Plate 245/7-9
Op 83, t 385/28.
Description in op 98, p 394, t 21/8.
Holotype:
Pl/33- Java. R. Lamongan. Quelle - Austritt. Moos.
J Marked specimen named "Pinnularia borealis var." on label.
Finder: 379-9-
Further slide:
Pl/35. Sumatra. TBo.lg. Balige, Bachtal.
Marked specimen named on label.
Finder: 437.8.
N.B. In op 122, p 105, Hustedt raises this taxon to species rank and
gives it the name Pinn. dubitabilis Hustedt.
83-10 Pinnularia major var. clavata Hustedt Plate 247/1
Op 83, t 386/3.
Validating diagnosis: A Pinnularia majore var. majore habitu claviforme
differt.
Holotype:
P2/91. Tanganikasee. 6.
A single mount named on the label.
83-11 Pinnularia robusta Hustedt Plate 246/5-6
Op 83, t 387/1-2.
Description included in plate explanation.
Holotype:
P3/50. Pernambuco.
A mount with two picked specimens, the i-type3, named on the label.
83-12 Pinnularia major var. sendaiensis Hustedt Plate 247/2
Op 83, t 387/3-
Validating diagnosis: A typo valvis majoribus differt, longitudo circiter
360 urn.
Holotype:
P2/92. Sendai - J apan. Lignit.
A single mount named on the label.
83-13 Pinnularia major var. capitata Hustedt Plate 247/3-4
Op 83, t 387/4-
Validating diagnosis: A typo apicibus capitatis obtuse truncatis differt.

154
Holotype:
P2/90. Bonkerville. N.H,
A mount with three picked specimens named on the label.
83-14 Pinnularia dactylus var. sumatrana Hustedt Plate 248/1-2
Op 83, t 388/2.
Description included in plate explanation. See also op 87, p 162.
Holotype:
P4/23. Toba-See, Sumatra. PI. 1 m.
Marked specimen named on the label.
Finder: 469-3-
83-15 Pinnularia rhombica Hustedt Plate 246/3-4
Op 83, t 388/8.
Description in op 112, p 184, f 42.
Holotype:
P3/48. Schwarzsee. 38- Grund. Davos. Schweiz.
Marked specimen named on label.
Finder: 432-3-
83-16 Pinnularia suchlandtii Hustedt Plate 247/5-8
Op 83, t 388/9-H.
Description in op 112, p 184, f 39-41-
There are two slides with marked and named specimens. The following is
taken as lectotype:
P3/83- Davos. Totalpsee. Grund. 145. Schweiz.
Finder: 226.4; 314-3; 342.7-8; 490.7; 617-5-8.
Isolectotype:
277/10. Davos. Totalpsee. Grundschl. 145- Schweiz.
Finder: 406.3-6; 439-7; 466.6; 494-3; 611.9; 674-2-5.
83-17 Pinnularia rostellata Hustedt Plate 249/1-3
Op 83, t 388/12.
Description in op 112, p 182, f 43-
Holotype:
P3/49- Schottensee. 107. Grund. Davos.
Marked specimen named on label.
Finder: 613.8.
N.B. This taxon was renamed by Hustedt in op 89, t 406: Pinnularia
rhynchocephala Hustedt, because of P. rostellata (Kutzing 1844) Raben-
horst 1853 and P. rostellata Gregory 1857.
83-18 Pinnularia borealis var. lanceolata Hustedt Plate 249/4-7
Op 83, t 388/16-17.
Description in op 112, p 186, f 44-
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
155
Of the two specimens - both marked and named on index sheets - the
following is selected as lectotype:
Nel/70. Schwarzsee, 41• Ausfluli. Schweiz.
Finder: 381-5 (i-type f 16).
The other specimen:
Nel/62. Davos. Unterer Grialetschsee. Algen. 173-
Finder: 345-2-5 (i-type f 17).
83-19 Pinnularia obscura var. constricta Hustedt Plate 246/7-8
I op 83, t 388/22.
Description in op 112, p 182, f 46.
Holotype:
277/49- Davos, Oberer Grialetschsee. Grund. 237.
Marked specimen named on index sheet.
Finder: 470.2.
83-20 Pinnularia vasta Hustedt Plate 245/10-12
op 83, t 388/25.
Description in op 112, p 187, f 45-
Holotype:
277/57. Davos, Unterer Grialetschsee. Bach. 171.
Marked specimen named on index sheet.
Finder: 318.5-6.
83-21 Pinnularia subflexuosa Hustedt Plate 248/3-4
op 83, t 389/1-2.
Description included in plate explanation.
Holotype:
P3/77- Puebla, Mexico.
A slide with three picked specimens named on the label, among them the
two i-types.
83-22 Pinnularia ventricosa Hustedt Plate 249/lO-H
Op 83, t 389/3-
Description in op 108, p 86 (with Pinn. lacunarum).
Holotype:
P3/98. Columbia River. Oregon.
This is a single mount with the i-type.
83-23 Pinnularia lacunarum Hustedt Plate 250/1-6
Op 83, t 389/4-5-
Description included in plate explanation, also in op 108, p 85, f 164-I65.
Four slides contain marked and named specimens of this taxon, of which,
however, none can be associated with the illustrated specimens with
sufficient certainty. As lectotype is therefore chosen:

156
P2/52. Wawontoa-See. Celebes. 74.
Finder: 525-5-6.
Isolectotypes:
P2/53. Wawontoa-See. Celebes. 74- Nbl/13. Wawontoa-See. Celebes. 74.
Finder: 496.3- Finder: 496.3-
Paralectotype:
397/46b. Wawontoa-See. Celebes. 75-
Finder: 346.9.
N.B. The polar fissures are in reality not pointing to opposite
directions, as said by Hustedt. Their angles and degrees of curvature are
very different by which the impression of diagonal symmetry is brought
about.
83-24 Pinnularia brevicostata var. sumatrana Hustedt Plate 251/1-4
op 83, t 389/7-9.
Description included in plate explanation, also in op 98, p 398, t 22/4-6.
Holotype:
Pl/47. Sumatra. Toba-Heide. THly'.
Marked specimens named on label.
Finder: 286.2 (i-type f 9)J 342.7-8 (2 specimens, one is i-type f 7);
438.5-8 (i-type f 8).
Further specimen:
Pl/48. Danau di Atas. Sumatra. A3a.
Marked specimen named on label.
Finder: 643-4-
83-25 Pinnularia brasiliensis Hustedt Plate 249/9
op 83, t 389/10.
Validating description: Valvae lineares apicibus rotundatis, non pro-
tractis, circiter 65 urn longae, 8 urn latae.
Holotype:
103/53* See b. Porto do Campo a. Sepotuba. PI. Bras. 12.
Marked specimen, not named.
Finder: 373-2-5-
83-26 Pinnularia ornata Hustedt Plate 249/8
Op 83, t 389/11-12.
Description in op 108, p 91-
Two slides contain marked and named specimens. Lectotype:
P2/53- Wawontoa-See. Celebes. 74-
Finder: 286.9 (a specimen in very oblique position); 429.2-5.
Isolectotype:
397/47b. Wawontoa-See. Celebes. 74-
Finder: 490.7-8 (this specimen is broken).
N.B. The dimensions of the specimens illustrated by Hustedt and the
size given by him in op 108 cannot be correct. Of the three marked speci-
sCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
157
mens two measure 66 and 60 um in length, compared with Hustedt's 72 and
- 75 urn of the drawings and 70-80 jxm in his description.
83-27 Pinnularia ruttneri Hustedt Plate 252/1-3
Op 83, t 390/6-7-
Description included in plate explanation, see also op 87, p 162.
Holotype:
. P3/6O. Tobasee, Sumatra. TD3.
Marked specimens named on label.
I Finder: 343.1; 497-4 (i-type f 6?).
83-28 Pinnularia (ruttneri var.?) paludosa Hustedt Plate 252/4-5
Op 83, t 390/8.
Description in op 98, p 405-
Holotype:
155/73• Sumatra. Banding Agung. RSb.
Marked, unnamed specimen.
Finder: 620.3-
N.B. in op 98, p 405, Hustedt recombines this taxon: Pinnularia viridis
var. paludosa (Hustedt) Hustedt.
83-29 Pinnularia tenuistriata Hustedt Plate 253/1-3
Op 83, t 390/10.
Description included in plate explanation.
Holotype:
P4/71• Demerara-River. Guyana.
Marked, unnamed specimen.
Finder: 402.7-
Isotype:
P4/72. Demerara-River. Guyana.
Marked, unnamed specimen.
Finder: 283.8.
83-30 Pinnularia tenuistriata var. rostrata Hustedt Plate 253/4-6
Op 83, t 390/9.
Validating diagnosis: A typo apicibus leniter capitatis differt.
Holotype:
P4/72. Demerara-River. Guyana.
Marked, unnamed specimen.
I Finder: 285-9-
83-31 Pinnularia parvula Hustedt Plate 254/1-2
Op 83, t 390/11-12.
Description in op 94, p 289, t 23/14-

158
Holotype:
P3/l6. Sumatra. Ranausee. R4a.
Marked specimen named on label.
Finder: 462.2-5.
N.B. This taxon has to be renamed because of Pinnularia parvula Cleve-
Euler 1932:
Pinnularia ranauensis Simonsen, nov. nomen.
Syn.: P. parvula Hustedt, op 83, t 390/11-12, 1934.
This specimen documents fairly well the difficulties Hustedt had with
his magnification standards. Hustedt's three illustrations of this same
single specimen in op 83 and 94 measure 28.5 M™, 31 urn, and 29 urn in
length. The exact length is 30 l^ni.
83-32 Pinnularia acoricola Hustedt ' Plate 254/3-9
Op 83, t 390/13-16.
Description in op 87, p 159, also in op 94, p 293, t 21/11-16.
There is no slide with marked or named specimens from the type locality.
Therefore the following slide is here proposed as lectotype:
15l/ll. Java. D3b. Dieng Plateau. Tel. Pengilon. (correct: Pengilan)
The taxon is fairly scarce. Our specimens were found at the following
finder positions: 284.8; 404-3; 434-9; 526.6; 554.8.
There is a number of slides with the taxon's name on their labels, not
from the type locality, on which this species occurs very abundantly, e.g.
Pl/3. Sumatra. TWld. Samosir. Tobasee. Solfatarenfeld.
83-33 Pinnularia acoricola var. lanceolata Hustedt Plate 254/18-21
op 83, t 390/17-19.
Description in op 87, p 159; see also op 94, P 293, t 2l/l7-l8.
Holotype:
Pl/4. Tobasee. Sumatra. TD4-
Marked specimens named on the label.
Finder: 341.5; 346.1-4; 463.2-5; 523-5-6; 615-5-
83-34 Pinnularia atomus Hustedt Plate 254/10-17
Op 83, t 390/20-23.
Description included in plate explanation.
No marked or named specimens exist of this taxon. As lectotype is here
chosen:
157/82. Sumatra. SKBlffi. Subangpafl. Bach.
The taxon is fairly frequent.
N.B. In op 94, p 241, t 20/29, Hustedt gives a full description of
this taxon and recombines it: Navicula mediocris Krasske var. atomus
(Hustedt) Hustedt.
83-35 Pinnularia stricta Hustedt Plate 254/22-30
op 83, t 390/24-27.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
159
Description in op 94, P 285, t 21/9-10.
One marked, unnamed specimen exists from the type locality which is
therefor the holotype:
393/78. Bach, Subang-Paft. Sumatra. SKBla.
Finder: 436-9-
A few more unmarked specimens are here given to show that Hustedt1 s
drawings of the valve ends are not quite correct.
Two further slides contain marked specimens named on the labels:
P3/l6. Sumatra, Ranausee. R4a.
Finder: 320.6.
P3/74- Buitenzorg. Bot. Garten. Java. B2ca.
Finder: 500.6.
83-36 Pinnularia flexuosa var. gibbosa Hustedt Plate 255/1-2
Op 83, t 391/1-2.
Validating diagnosis: A typo valvis in media parte gibbosis differt.
Holotype:
P2/3. Hatfield Swamp, N.J.
This is a mount with two picked specimens named on the label.
83-37 Pinnularia splendida Hustedt Plate 256/1-4
Op 83, t 391/5-6.
Description included in plate explanation.
Of the two slides with marked - unnamed - specimens the following is here
adopted as lectotype:
91/27. Sudgeorgien, Grytviken; See, 5-
Finder: 287-8; 380-9; 437-6-9 (i-type f 6); 470.4-7-
Para- (iso- ?) lectotype:
91/37. Sudgeorgien, Grytviken; See, 4-
Finder: 523-8-9 (i-type f 5)-
83-38 Pinnularia krasskei Hustedt Plate 257/1-3
Op 83, t 391/7-8.
Description included in plate explanation.
Holotype:
91/30. Sudgeorgien, Grytviken; See, 8.
Marked, unnamed specimens.
Finder: 284-5-6; 465-3-6; 521.3-
83-39 Pinnularia krasskei var. ventricosa Hustedt Plate 257/4-6
Op 83, t 391/9-10.
Validating diagnosis: A typo habitu lanceolato-ventricoso differt.
Holotype:
91/30. Sudgeorgien, Grytviken; See, 8.

160
Marked, unnamed specimens.
Finder: 347.8; 465-3-6.
An unmarked specimen of this fairly frequent taxon is included here.
83-40 Pinnularia laxa Hustedt Plate 258/1-6
Op 83, t 391/H-13.
Description in op 173, P 400 (under Pinnularia delicata Frenguelli).
There are two slides containing marked specimens named on the labels.
Of these the following shall be the lectotype:
P2/73- Demerara River. 86.c.
Finder: 285-9; 439.1; 465.6-9.
Isolectotype:
P2/72. Demerara River. 86.a.
Finder: 431-1-
83-41 Pinnularia rivularis Hustedt
Op 83, t 392/1.
Description in op 87, p 160; see also op 98, p 393,
Holotype:
155/54. Sumatra. Ajer Upi. RBI a.
Marked, unnamed specimen.
Finder: 560.1.
Further slide:
l53/i7. Java. B2de. Buitenzorg. Teich. Hydrilla.
Marked, unnamed specimen (cf op 98, p 393).
Finder: 503-4-
83-42 Pinnularia gracilis Hustedt Plate 259/1-4
op 83, t 392/2-3.
Description in op 87, p 159, f 13; see also op 94, p 293, t 22/9-10.
In the absence of marked specimens from the type locality the following
slide, on which the taxon is frequent, is selected as lectotype:
146/76. R. Lamongan. Java. Quelle. KLQu3a.
Specimens were found, e.g. at finder positions 227.2; 341-3; 341-9; 375.1-
Further slide:
146/16. Java. R. Lamongan. SW-Ufer. Ceratophyll. 4-5 m- KL.l.b.
Marked, unnamed specimens.
Finder: 349-2; 532-3-
N.B. In op 89, t 406 ("Berichtigungen"), Hustedt renames this taxon
because of the priority of several other authors: P. graciloides Hustedt.
83-43 Pinnularia legumen var. cuneata Hustedt Plate 258/7-9
Op 83, t 392/6-7, 11.
Description in op 112, p I83.
Plate 255/3-5
t 23/3-
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
161
The taxon was originally described from two very different localities.
The following slide is chosen as lectotype:
191/16. Norwegen. Feforvatn. 4. 25-30 m.
Marked, unnamed specimen.
Finder: 377-5-8 (i-type f 7); another unmarked specimen at 465-2-3.
A further unmarked and not named specimen was found on the following
slide:
Pl/83- Davos. Oberer Grialetschsee. Grund. 237-
Finder: 497.7 (i-type f 11?).
* 83-44 Pinnularia gracilis var. americana Hustedt , Plate 259/5-6
Op 83, t 392/12-13.
Description in Cholnoky (Nova Hedwigia 8, p 78, 1964) who also recombined
this taxon: Pinn. graciloides var. americana (Hustedt) Cholnoky.
Holotype:
103/6. Matto Grosso, Nebenfluss d. Sepotuba. Jan.1914. Bras. 39.
Marked specimens named on record sheet.
Finder: 429-1 (i-type f 12); 551-3 (i-type f 13).
83-45 Pinnularia substomatophora Hustedt Plate 260/l~3
Op 83, t 392/14-15.
Description included in plate explanation. See also op 87, p 160.
Of the two slides with marked specimens the following is selected as
lectotype:
P5/49- Hudson River.
A single mount named "Pinnularia" on the label.
The other slide:
P5/90. Tobasee. Sumatra. TD2d.
Marked, unnamed specimen.
Finder: 529-7-
N.B. In op 98, p 396, under Pinnularia stomatophora, Hustedt withdraws
this taxon and includes it in the last-named species.
83-45 Pinnularia subnodosa Hustedt Plate 26l/l-2
Op 83, t 392/16.
Validating diagnosis: Pinnulariae nodosae Ehrenbergii similis, sed cum
valvis levibus.
Holotype:
P3/78. Columbia River.
A single mount with name on the label.
83-46 Pinnularia (gibba var.?) hyalina Hustedt Plate 260/4-6
Op 83, t 392/17-18.
Description in op 108, p 90 (with P. curtistriata Hustedt). There the taxon
is named P. gibba var. hyalina Hustedt.

162
Holotype:
P2/12. Montgomery, Ala. N.Am.
A slide with eight picked specimens named on the label "Pinnularia gibba
var. hyalina".
83-47 Pinnularia elongata Hustedt Plate 261/3-8
Op 83, t 392/19-21.
Description in op 173, p 399, under Pinn. elongatoides Hustedt.
There are four slides, all single mounts with the taxon's name on the
labels. Lectotype:
Pl/89. Columbia River, Oregon.
Isolectotypes:
Pl/87. Columbia River, Oregon. Pl/90. Columbia River.
Pl/88. Columbia River, Oregon.
83-48 Navicula uniseriata Hustedt Plate 255/6-10
op 83, t 392/24-27.
Description in op 94, p 259, t 18/11-12 (under the new name Nav. tenera).
Of the three slides with marked and named specimens the following may serve
as lectotype:
N8/51. Java, Ranu Klindungan, 2.
Finder: 348.1-2 (2 specimens); 376.2; 495.5-6.
Paralectotypes:
N8/50. Java, R. Klindungan. 1. N8/49- Java. Ranu Klindungan. 1.
Finder: 496.8. Finder: 345.6-9; 437-5-
N.B. In op 89, t 405 (1936; "Berichtigungen") Hustedt renames the
taxon Navicula tenera Hustedt, because of Nav. uniseriata 0strup 1913-
In op 94, p 259 (1937), he repeats this new denomination.
Op. 84. A. Schmidts Atlas der Diatomaceenkunde, Heft 99-l00,t 393-400, 1934
84-1 Navicula duerrenbergiana Hustedt Plate 262/1-6
Op 84, t 393/8-9.
Description in Krammer & Lange-Bertalot (Bacillariophyceae, pt 1, p 119,
1986).
Holotype:
N8/9. Saline Durrenberg.
Marked specimens named on label.
Finder: 467-5-6; 495-2-5.
The taxon is not rare, though not frequent either, so that we were able
to photograph a few more unmarked specimens. The mountant appears to be
disintegrated, which would explain our difficulty in obtaining acceptable
micrographs.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwesrambler.ru
163
84-2 Pinnularia trigibba Hustedt Plate 262/13
Op 84, t 393 ("Nachtrag zu Tafel 392"), illustration in op 83, t 392/9.
Description included in plate explanation; cf also op 173, P 399 (under
Pinn. amoena Hustedt).
Holotype:
P3/89- Demerara River.
A single mount named on the label.
84-3 Navicula permulsa Hustedt Plate 263/1-2
Op 84, t 394/22.
Validating description: Species eadem est ac Pinnularia constricta Clevei
(Syn. Navic. Diat. 2, p 98, 1895).
Holotype:
N14/98. Galapagos-Inseln. 12.
Marked specimen named on index sheet.
Finder: 314-2.
N.B. Remark written in Hustedt's hand in the plate explanation:
"(=Pinnularia constricta C1.)M. - Hustedt's illustration and our
micrographs show clearly the lineolate structure of the striae which excludes
this taxon from the genus Pinnularia. Since Cleve's (loc. cit.) epithet
cannot be applied for a new combination as was done by M. Peragallo
(Catalogue general des diatomees, p 537, 1903), Hustedt's combination
remains valid.
84-4 Navicula obtusangula Hustedt Plate 263/3-4
Op 84, t 394/23-
Validating description: Valvae lanceolatae vel anguste rhombicae, apicibus
rotundatis, non protractis, circiter 37-42 um
longae, 8-10 urn latae.
So far we have not been able to locate the illustrated holotype. Therefore
another specimen, marked but not named, may serve as lectotype:
N14/98. Galapagos-Inseln. 12.
Finder: 442.7.
84-5 Navicula subcancellata Hustedt Plate 263/5-7
Op 84, t 394/25.
Description included in plate explanation.
Holotype:
N14/98. Galapagos-Inseln. 12.
Marked, unnamed specimen.
Finder: 462.4-5-
84-6 Navicula perrhombus Hustedt Plate 262/7-12
Op 84, t 394/28-31-
Validating description: Valvae rhombicae, apicibus acutis, non protractis,
16-25 um longae, 7-8 um latae.

164
There are two slides with marked, unnamed specimens. As lectotype is here
chosen:
Zt2/64. Miang Besar. Borneo. 1.
Finder: 227.1; 412.9-
Isolectotype:
N15/51- Miang Besar, Borneo. 4-
Finder: 281.7.
N.B. Beside the plate legend for this taxon there is a remark in
Hustedt's hand: "= N. raphoneis (E.?) Grun."
84-7 Navicula emendata Hustedt Plate 263/8-12
Op 84, t 394/32.
Validating description: Valvae anguste lanceolatae apicibus plus minusve
acutis, non protractis, 74-128 urn longae, 6-10
urn latae.
Two slides with marked but not named specimens were found. Lectotype:
Zt2/64. Miang Besar. Borneo. 1.
Finder: 259-5-8; 343-3 (?); 375-4-7 (i-type?); 462.1-4-
Isolectotype:
N15/51- Miang Besar. Borneo. 4-
Finder: 468.1-2.
84-8 Navicula woltereckii Hustedt Plate 264/1-4
Op 84, t 395/1-4-
Description in op 108, p 68.
The taxon is marked on two slides, with the name on the index sheets. As
lectotype is chosen:
397/47a. Wawontoa-See. Celebes. 74-1-
Finder: 437-8 (4 specimens).
Isolectotype:
397/47b. Wawontoa-See. Celebes. 74-2.
Finder: 316.7.
N.B. In op 108, p 68, Hustedt recombines this taxon: Navicula
helvetica var. woltereckii (Hustedt) Hustedt.
84-9 Navicula oblongiformis Hustedt Plate 264/5-7
Op 84, t 395/16-18
Validating diagnosis: Navicula oblongae Kuetzingii similis, sed cum striis
terminalibus plus minusve strictis, non flexis.
There are three slides with picked specimens, two are single mounts, all
have the taxon's name on their labels. As lectotype is selected:
N10/7- Columbia River.
I-type f 16?
Isolectotypes:
NlO/5. Columbia River. N10/6. Columbia River, Oregon.
I-type f 17? (2 specimens).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler.
165
84-10 Navicula perobesa Hustedt Plate 265/1-5
Op 84, t 395/22-25.
Validating description: Valvae late lanceolatae apicibus plus minusve
acutis, circiter 29-55 pm longae, 13-18 urn latae.
Only one slide with marked specimens - named on the index sheet - was
found. This must be considered as the holotype, although the marked
specimens are not those illustrated:
N16/88. Rumanien. 8.
Finder: 340.2; 491.1.
84-H Navicula rumaniensis Hustedt ' Plate 265/7-8
Op 84, t 395/26-27.
Validating description: Valvae anguste lanceolatae, apicibus late rotun-
datis, non protractis, circiter 60 urn longae,
12 urn latae.
Holotype:
X7/34- Rumanien.
Marked, unnamed specimen.
Finder: 615.I.
84-12 Navicula paludinarum var. maculata Hustedt Plate 266/1-5
Op 84, t 396/2.
Validating diagnosis: Differt a typo interstriis maculatis.
Three slides with marked - none named - specimens were found. As lectotype
is chosen:
184/59- Rumanien. Tertiar.
Finder: 466.1 (i-type f 2); 440.1-2 (very oblique).
isolectotype:
N17/32. Rumanien, Tertiar.
Finder: 588.1-4.
Paralectotype:
184/88. Rumanien. 4-
Finder: 257-8.
N.B, We measured lengths between 105 and 156 urn.
84-13 Navicula wetzelii Hustedt Plate 267/1-4
Op 84, t 396/4-5-
Description in op 170, p 115, f 1249 (as Nav. deliberata).
The taxon is marked on three slides and named on the index sheets of two.
Of these latter the following is selected as lectotype:
N17/31. Rumanien. Tertiar.
Finder: 465.8 (i-type f 4).
Isolectotypes:
N17/30. Rumani en. Tertiar. 5-
Finder: 433-9 (girdle view); 584.2.

166
184/57. Rumanien. Tertiar.
Marked, unnamed specimen.
Finder: 317-5 (i-type f 5).
Further isolectotype with unmarked, unnamed specimens:
184/55- Rumanien. Tertar.
Finder: 318-5-6; 319-2; 530*4-
N.B. In op 89, t 405, "Berichtigungen", Hustedt changes the above name
to Navicula deliberata Hustedt, because of Nav. wetzelii Hustedt 1927.
84-14 Navicula magnifica Hustedt Plate 268/1-4
Op 84, t 396/6.
Description in op 114, p 282; also in op 175, p 760, f 1734-
Two contemporaneous slides contain marked and named specimens, though not
the i-type. Lectotype:
N17/31. Rumanien. Tertiar.
Finder: 348.2-3.
Isolectotype:
NI.7/3O. Rumanien. Tertiar. 5.
Finder: 346.8 (very oblique position).
A younger (1935) slide, a single mount named on the label, may be here
included:
Nll/42. Rumanien.
84-15 Navicula bacillum var. intermedia Hustedt Plate 265/6
Op 84, t 396/45.
Validating diagnosis: Differt a typo valvis lanceolatis, in media parte
linearibus, marginibus parallelis.
Holotype:
397/47b. Wawontoa-See. Celebes. 74.2.
Marked specimen named on index sheet.
Finder: 492.9 (i-type??).
N.B. In op 170, p 115, Hustedt includes this taxon in Navicula bacillum
forma lanceolata (0strup) Hustedt.
84-I6 Navicula carminata Hustedt Plate 263/13-15
Op 84, t 397/4-6.
Description in op 155, p 117 (under Nav. teneroides); also in op 172,
p 542, f 1579-
Holotype:
N19/12. Aokiko, Japan. 4-
Marked specimen named on index sheet.
Finder: 402.3-6 (i-type f 5 and 6).
84-17 Navicula farta Hustedt Plate 269/1-7
Op 84, t 397/7-9.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
167
Description in op 175, P 644, f 1646.
Holotype:
N19/12. Aokiko, Japan. 4.
Marked specimens named on index sheet.
Finder: 289-7; 343-1-4; 462.8.
84-I8 Navicula viminea Hustedt Plate 268/5-7
Op 84, t 397/10-11.
Description in op 148, p 28, t 7/21.
» Holotype:
Rl/3. Seychellen.
Marked specimen named on index sheet.
Finder: 530.9-
84-19 Navicula subhexagona Hustedt Plate 269/8-9
Op 84, t 397/12-14-
Description in op 135, P 405 (under Nav. meridionalis Hustedt); see also
op 175, p 737, f 1714.
Of the two slides with specimens, both single mounts with names on the
labels, the following may serve as lectotype:
N10/2. Columbia River, Oregon.
I-type f 13.
Isolectotype:
N10/3- Columbia River, Oregon.
I-type f 12.
84-20 Navicula radiopunctata Hustedt Plate 269/1O-I3
■ op 84, t 387/15-16.
Description in op 175, p 736, f 1713.
Holotype:
N10/4. Columbia River.
A single mount with the i-type, named on the label.
; Isotype:
N14/93* Columbia River, Oregon. 1.
; Marked specimen named on index sheet.
I Finder: 402.2.
';:' 84-21 Navicula cymbelloides Hustedt Plate 270/1-2
i OP 84, t 397/17-19.
: Description in op 108, p 74, f 123-125; see also op 175, p 742, f 1719.
The taxon occurs marked and named on two slides. As lectotype is proposed:
397/47a. Wawontoa-See. Celebes. 74.1 -
Finder: 317-5-8 (i-type f 123 in op 108); 321.3 (i-type f 17).

168
Isolectotype:
397/47b. Wawontoa-See. Celebes. 74-2.
Finder: 493-7-
84-22 Navicula vara Hustedt Plate 269/14-15
Op 84, t 397/20-21.
Description in op 148, p 25, t 7/5-7; see also op 175, p 647, f 1649.
Holotype:
Zt3/24. Campeche Bay.
Marked, unnamed specimen.
Finder: 504-6-9.
84-23 Navicula virgata Hustedt Plate 270/3-6
Op 84, t 397/22-24.
Mentioned without description in op 114, P 282. Description in op 175,
p 743, f 1720.
Holotype:
N19/12. Aokiko, Japan.
Marked, unnamed specimens.
Finder: 413-4; 436.3 (i-type f 22 and 23).
Isotype:
N8/96. Aokiko, Japan.
Marked specimen named on the label.
Finder: 591.1-
84-24 Navicula levanderi Hustedt Plate 271/10-13
Op 84, t 397/30-32.
Description in op 90, p 195J also mentioned in op 112, p 174.
Holotype:
N12/84. See am OstfuG des Wuokatti, Finnland.
Marked specimens named on label.
Finder: 345-2-5; 404-2-3-
84-25 Navicula denticuloides Hustedt Plate 27l/l-9
Op 84, t 397/33-35-
Description included in plate explanation.
Of the two contemporaneous slides with marked specimens, all named on
index sheets, the following is proposed as lectotype:
Zt3/65- Campeche Bay. 63a. k.
Finder: 284.1; 313-5-8; 370.6; 401.1-4.
Isolectotype with marked girdle views:
Zt3/64- Campeche Bay. 63a. i.
Finder: 287.1; 375-7.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
169
84-26 Navicula pertenuis Hustedt Plate 272/1-3
Op 84, t 397/36.
Validating description: Valvae lineares, marginibus parallelis, apicibus
longe protractis, lateque capitatis, circiter
46 urn longae, 12 urn latae, striis pertenuibus,
punctatis.
Holotype:
Zt3/64- Campeche Bay. 63a. i.
Marked specimen named on index sheet.
Finder: 321.3.
IJf.B. The polar raphe fissures point to opposite directions.
t
84-27 Navicula delicatissima Hustedt Plate 27l/l8-19
Op 84, t 397/37-38.
Validating description: Valvae lineares, marginibus parallelis vel leviter
concavis, apicibus late rotundatis, circiter
14.5 urn longae, 7-5 urn latae.
Holotype:
Zt3/64- Campeche Bay. 63a. i.
Marked, unnamed specimen.
Finder: 311-8-9-
84-28 Navicula subdelicata Hustedt Plate 271/l4-17
Op 84, t 397/39-40.
Validating description: Valvae lineares, marginibus triundulatis, apicibus
cuneato-rotundatis, circiter 20 urn longae,
6.5 Jim latae.
Holotype:
Zt3/64- Campeche Bay. 63a. i.
Marked, unnamed specimen.
Finder: 347-1-
N.B. Hustedt*s illustration is incorrect. The striation is apparently
interrupted by a fairly wide longitudinal rib on each side so that each
stria seems to consist of two areolae.
84-29 Navicula subgastrum Hustedt Plate 272/4-9
Op 84, t 398/3-7.
Description in op 87, p 157, f 12, where this taxon is also denominated
as "nov. spec." (tx 87-10)- description also in op 175, p 801, f 1772.
Four contemporaneous slides with marked specimens, all with names on the
labels, were found. Two of these contain specimens which can be identified
with illustrations of Hustedt. Of these latter the following is designated
as lectotype:
N8/17. Tobasee. Sumatra. TD17.
Finder: 437-8 (i-type f 5).
Paralectotypes:
N8/20. Sumatra. Tobasee. TD2b.
Finder: 399-6-9; 401.7; 430.2; 521.6.

170
N8/21. Sumatra. Tobasee. TD2.C.
Finder: 344.2; 409-6-9; 584.6-9.
Further slide:
N8/I9. Sumatra. Meer v. Singkarak. 130m.
Finder: 317-1 (i-type f 3).
84-30 Navicula balcanica Hustedt Plate 273/1-3
Op 84, t 398/13-16.
Description in op 114, p 282; better in op 117, p 928, t 40/12-15; see
also op 175, P 815, f 1787.
Of the two slides with marked specimens, both with the name on the label,
the following is taken as lectotype:
N9/99- Ochrida-See. Plankton. 30 m.
Finder: 522.1.
Paralectotype:
N9/98. Ochrida-See. Plankton. Oberfl.
Finder: 466.2-3.
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 85, 19§5) include this
taxon as synonym in Navicula porifera Hustedt (cf. tx 114-20). In several
respects I have doubts that this is correct, both taxonomically and nomen-
claturally.
84-31 Navicula gastriformis Hustedt Plate 273/4-10
Op 84, t 398/17-19.
Description in op 87, p 157, f 8, where this taxon was also designated
as "nov. spec." (tx 87-11). See also op 117, p 928.
Holotype:
N3/20. Sumatra. Tobasee. TD1.
Marked specimens named on the label.
Finder: 312.6; 552.1-4 (i-type f 18).
Isotype:
161/34. Sumatra. Tobasee. TD1.
Marked, unnamed specimen.
Finder: 588.8.
Paratype:
161/66. Tobasee. Sumatra. TD19b.
Marked, unnamed specimen.
Finder: 318.3 (i-type f 8 in op 87).
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 71, 1985) include this
taxon as synonym in Navicula gastrum var. signata Hustedt (cf. tx 89-41)*
84-32 Navicula perlata Hustedt Plate 273/11-16
Op 84, t 398/43-48.
Description in op 114, p 282.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
171
Holotype:
—-tf 10/43 - Tanganikasee.
Marked specimens named on the label.
Finder: 288.3; 400.6-9; 441.6-9; 46O.7-8; 461.9; 615.6; 678.5.
N.B. In op 175, p 814, f 1786, Hustedt renames this taxon: Navicula
perlatoides Hustedt, because of N. perlata Marsson 1900.
■ >-.
j.-:.'-64-33 Navicula placentula var. raaculata Hustedt Plate 274/1-2
'pOp 84, t 399/18.
[Description in op 117, p 928, t 40/16.
y .Holotype:
X7/30. Rumanien.
= Marked, unnamed specimen.
J' Finder: 493-9-
v *£*■ * -
■; -84-34 Navicula angustissima Hustedt Plate 274/3-5
rOp 84, t 399/19.
I. Validating description: Valvae anguste rhombicae, apicibus rotundatis,
I* non vel levissime rostratis, circiter 44-86 urn
£;=■'• longae, 7-9 um latae.
j The illustrated specimen could not be located so far. For the time being
I another marked, unnamed specimen, which exhibits the peculiar structure
J^ very well, is offered here as lectotype:
"SN17/28. Rumanien. 3.
■'■Finder: 620.3-6.
I;?4 N.B. The spelling "augustissima" in the legend of t 399 is a
typographic error which Hustedt corrected in his copy. The same was also realized
!.by VanLandingham (Catalogue 5, p 2411, 1975).
i; 84—35 Navicula acutissima Hustedt Plate 275/1-2
{0p 84, t 399/23-
[Validating description: Valvae lineari-lanceolatae, apicibus leviter
)'p~ rostratis, acutis, circiter 34 um longae, 5 um
latae.
.Holotype:
)..Zt3/24. Campeche Bay.
■Marked, unnamed specimen.
i Finder: 647-4-5.
■ \ -
C84-36 Navicula suchlandtii Hustedt Plate 275/9-17
i op 84, t 399/24-28.
Description in op 112, p 168, f 33-34.
There are two slides with marked and named specimens, of which the
following is chosen as lectotype:
'277/52. Davos. Mittlerer Grialetschsee. 166.
Finder: 258.8; 312.7.

172
Paralectotype:
Nel/70. Schwarzsee, 41 • Ausflufl. Schweiz.
Finder: 370.8; 494-2.
84-37 Navicula amplectens Hustedt Plate 274/6-9
Op 84, t 399/29.
Validating description: Valvae late lanceolatae, apicibus rostratis, circi-
ter 52-58 urn longae, 18-19 Mm latae.
We were unable to locate the holotype but found another marked, unnamed,
specimen, a frustule, which is unfortunately in a very oblique position.
This may serve as lectotype as long as the holotype has not been found:
224/59. Tanganikasee. l/2.
Finder: 371.2-5.
84-38 Navicula regressa Hustedt Plate 275/3-8
Op 84, t 399/34-36.
Validating description: Valvae lineari-ellipticae, apicibus rotundatis
vel cuneatis, circiter 20-30 urn longae, 6-8 um
latae.
Holotype:
Zt3/26. Campeche Bay. 3-
Marked, unnamed specimens.
Finder: 194-6; 254-2-5; 402.8 (2 specimens).
84-39 Navicula tantula Hustedt Plate 275/20-26
Op 84, t 399/54-57-
Recorded without description in op 82, p 383. Description in op 94, p 223
(under Stauroneis fonticola Hustedt). See also op 171, p 250, f 1375.
Holotype:
N8/44- Poggenpohls Moor. Dotlingen. 46. Hypnum.
The taxon is very frequent, not marked, named on the label.
84-40 Navicula recondita Hustedt Plate 275/30.-35
Op 84, t 400/6-9.
Description in op 107, p 68; see also op 171, p 168, f 1301.
Holotype:
N12/30. Sachsische Schweiz. 1.
Marked specimens named on the label.
Finder: 405-5; 586.2.
The taxon is not rare; a few unmarked specimens are here also shown,
N.B. Our micrographs show that Hustedt misinterpreted the striation,
the axial area is partly much narrower.
Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 58, 1985)
recombines this taxon: Navicula atomus var. recondita (Hustedt) Lange-Ber-
talot. I have grave doubts that this is correct. The micrographs show very
clearly, particularly near the valve centres, that this is a taxon com-
sCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler.
173
pletely separate from Navicula atomus (Kutzing) Grunow. Such a combination
appears quite impossible to me.
84-41 Navicula elaborata Hustedt Plate 275/18-19
Op 84, t 400/10-11.
Description in op 94, P 240, t 17/36.
Holotype:
N2/81. Java, R.Bedali, Gr. Badequelle. KB5k.
Marked specimen named on label.
tinder: 436.8-9-
We could find only this single valve. Slides with material from the other
locality given by Hustedt in op 94 ("An Moosen im Wasserfall Tjurug Tji-
kundul") do not contain marked specimens of this taxon.
84-42 Navicula quadripartita Hustedt Plate 275/36-42
op 84, t 400/12-15.
Description in op 94, p 263, t 18/35-37-
The taxon's name appears on the labels of three slides. As lectotype is
here selected:
N7/7- Poggenpohls Moor. Dotlingen. 50. Hypnum an Salix.
The taxon is very frequent, not marked.
Further slides:
N6/45. Poggenpohls Moor. Dotlingen. 76.
There are only a few unmarked specimens.
N7/8. Java, Ranu Pakis. Quelle 4- KPQu4.
Marked specimen named on the label.
Finder: 348.7 (i-type f 35 in op 94)-
N.B. In op 114, p 282, Hustedt synonymizes this taxon with and includes
it in Navicula hambergii Hustedt (cf. tx 46-6).
84-43 Navicula geitleri Hustedt Plate 276/1-7
Op 84, t 400/16-18.
Description in op 94, p 263, t 18/34-
There are three slides with marked specimens named on the label. According
to the protologue in op 84 and op 94 the following must be considered as
the holotype:
N3/26. Sumatra. Zufluft des Ranau-Sees. RE2a.
Finder: 399.4-7-
The other slides:
N8/66. Sumatra. Ajer Upi beim Ranausee. R.B.lh.
Finder: 585-6.
N3/27. Sumatra. Ajer Upi am Ranausee. RBlh.
Finder: 559.6-9-

174
84-44 Navicula lagerstedtii var. palustris Hustedt Plate 276/8-16
Op 84, t 400/27-29.
Description included in plate explanation. Also (simultaneously) in op
82, p 385, without illustration, also designated as "nov. var."
Three slides have marked specimens named on the labels, often more than
one specimen in a ring. As lectotype is selected:
N4/85. Poggenpohls Moor. Dotlingen. 79*
Finder: 226.1-4; 286.7; 436.2.
Isolectotype:
N4/83. Poggenpohls Moor. Dotlingen. 79-
Finder: 403-4.
Paralectotype:
N4/84. Poggenpohls Moor. Dotlingen. 60.
Finder: 341.1; 345-3; 349.1; 374-1; 380.l.
N.B. In op 157, p 286, Hustedt raises this taxon to species rank under
the name Navicula paludosa Hustedt. - The central stigma, first mentioned
by Hustedt in op 157, cannot always be made out with certainty.
84-45 Navicula lucens Hustedt Plate 275/27-29
op 84, t 400/30-32.
Description in op 107, p 169; see also op 171, p 177, f 1311.
Holotype:
N15/51. Miang Besar. Borneo. 4-
Marked specimen named on label.
Finder: 315-8-9.
84-46 Navicula mediopunctata Hustedt Plate 276/17-21
Op 84, t 400/43-45-
Description in op 94, p 249, t 17/40-41; see also op 170, p 88, f 1233.
Holotype:
N5/67. Java. R.Lamongan. Quelle 1. KLQulb.
Marked specimens named on label.
Finder: 373-6-9; 379-5-8.
N.B. We were able to resolve some striae of one valve and counted
48-52 striae in 10 urn. They are of parallel direction.
84-47 Navicula schmassmannii Hustedt Plate 276/22-30
oP 84, t 400/48-52.
Description in op 112, p 165, f 36^37; see also op 171, p 221, f 1338.
There is quite a number of slides with marked and named specimens from
the Davos area. Lectotype:
277/22. Kl. Fliielasee. 129- Grund. Davos. Schweiz.
Finder: 341.1-4; 461.2; 491.4-7; 520.6-9.
Further slides, e.g.:
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
175
Nel/70. Schwarzsee. 41. Ausflufl. Schweiz.
Finder: 429*8-9.
Nel/62. Davos. Unterer Grialetschsee. Algen. 173*
Finder: 381.8.
84-48 Navicula hustedtii var. obtusa Hustedt Plate 276/31-33
Op 84, t 400/57-58.
Description in Krammer & Lange-Bertalot (Naviculaceae, p 74, 1985), who
include this taxon as synonym in Navicula absoluta Hustedt (tx 126-22).
Holotype:
277/76. Davos. Unterer Grialetschsee. Grund. 230.
Marked, unnamed specimen.
Finder: 409.4-
84-49 Navicula hustedtii var. japonica Hustedt Plate 276/34-38
Op 84, t 400/59-61.
Holotype:
N19/12. Aokiko, Japan. 4-
Marked specimens named on index sheet.
Finder: 256.2; 617-8-9.
N.B; In op 170, p 146, f 1279? Hustedt synonymizes this taxon with
and includes it in Navicula laterostrata Hustedt (tx 48-4).
84-50 Navicula ventralis var. simplex Hustedt Plate 277/1-3
Op 84, t 400/77.
Description in op 112, p 162, f 38.
Holotype:
Nel/62. Davos. Unterer Grialetschsee. Algen. 173-
Marked specimen named on index sheet.
Finder: 318.2-3.
84-51 Navicula spirans Hustedt Plate 277/4-10
bp 84, t 400/80-84.
Description in op 107, p 63.
The taxon is nowhere marked or named. As lectotype is therefore proposed:
N17/57. Ovalau 1. Sudsee.
The taxon is very frequent.
84-52 Navicula minuscula var. alpestris Hustedt Plate 277/11-18
Op 84, t 400/92-95.
Description in op 112, p 164, f 31; see also op 170, p 137, f 1271.
Three slides with marked specimens, all named on index sheets, were found.
As lectotype is chosen:

176
277/76. Davos. Unterer Grialetschsee. Grund. 230.
Finder: 463-5; 492.6-9-
The other slides:
277/49- Davos. Oberer Grialetschsee. Grund. 237.
Finder: 553-9-
Nel/70. Schwarzsee. 4* • Ausflufi. Schweiz.
Finder: 371.2-5.
N.B. In op 112, p 164, Hustedt raises this taxon to species rank and
renames it: Navicula detenta Hustedt.
Op. 85. Untersuchungen uber den Bau der Diatomeen. X. Die sogenannten
"Langslinien" in der Schalenstruktur pennater Diatomeen. XI. Strukturtypen
in der Gattung Diploneis. Ber. Deutsch. Bot. Ges. 53. 3-41, 1935•
85-1 Caloneis heterocostata Hustedt Plate 277/19-21
Op 85, p 12, f 10. Hustedt refers also to A.S. Atl. t 50/6.
Holotype:
Nb2/54. Tamatave.
On the right-hand label is noted: "Caloneis. A.S. Atl. 50, 6-7."
This is a single mount with a specimen 124 |int long.
Op. 87. Die fossile Diatomeenflora in den Ablagerungen des Tobasees auf
Sumatra. Arch. Hydrobiol., Suppl. 14, 143-192, 1935-
87-1 Melosira granulata var. valida Hustedt Plate 278/I-4
Op 87, p 145, f 1.
As lectotype is here designated:
161/55. Tobasee. Sumatra. TDF5-
The taxon is unnamed and unmarked, the material contains hardly diatoms
other than this taxon, although virtually only in single valves.
Isolectotype:
l6l/56. Tobasee. Sumatra. TDF5-
Colonies are better preserved in plankton samples like the following:
159/26. Sumatra, Toba-Meer. Pangururan-Becken. 15-4.29.
N.B. This taxon was transferred to the genus Aulacoseira Thwaites by
Simonsen (Bacillaria 2, p 59, 1979).
87-2 Melosira granulata var. valida forma curvata Hustedt Plate 278/5-7
Op 87, p 145, f 2.
The following slide is selected as lectotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
177
161/38. Tobasee. Sumatra. TD4,
The taxon is neither marked nor named, it is frequent on the slide, though
mostly in single valves.
The colony shape is better shown by plankton samples like that on the
following slide:
159/23. Sumatra. Toba Meer. Nordbeck. PI. 12.4.29.
N.B. This taxon was also transferred to Aulacoseira by Simonsen
(Bacillaria 2, p 59, 1979).
B7-3 Cyclotella stelligera var. robusta Hustedt Plate 279/1-6
Op 87, p 147, f 4.
Of the three slides bearing marked specimens and the taxon's name on the
labels I select as lectotype:
Acl/63. Tobasee. Sumatra. TDF15.
Finder: 439-1; 619*3-6 (i-type f 4).
Isolectotype:
Acl/6l. Tobasee. Sumatra. TDF15.
Finder: 253-6; 287.1.
Paralectotype:
Acl/62. Tobasee. Sumatra. TD20a.
Finder: 465-9-
87-4 Cyclotella stelligera var. hyalina Hustedt Plate 279/9-10
Op 87, p 147, f 5-
Holotype:
Acl/63. Tobasee. Sumatra. TDF15-
Marked specimen named on the label.
Finder: 400.1.
87-5 Cyclotella areolata Hustedt Plate 279/7-8
Op 87, p 147, f 6.
Holotype:
Acl/64. Sumatra. Tobasee. TDF4-
Marked specimen named on the label.
Finder: 531.1-4-
87-6 Eunotia formica var. sumatrana Hustedt Plate 280/12-14
Op 87, p 149, f 21.
There is only one slide in the collection that bears the name of the taxon
on its label. It may therefore be considered as the holotype. No specimens
are marked, but the taxon is sufficiently frequent and characteristic to
be correctly identified:
Ll/99. Tobasee. Sumatra. TD2.c.

178
87-7 Achnanthes similis Hustedt Plate 280/2-8
Op 87, p 151, f 20.
Only one - unmarked and unnamed - rapheless valve of this taxon was found
on a slide made from sample TD17:
N8/I7. Tobasee. Sumatra. TD17-
Finder: 377-2-5-
There are several slides made from living material bearing the taxon's
name on their labels ("Achnanthes similis Hust. = A. simplex Hust."). Of
these the following is particularly rich and therefore designated as the
lectotype:
Ma2/79- Sumatra. Ranausee. R4hB.
N.B. In op 89, t 408/21-25, Hustedt renames this taxon Achnanthes
simplex Hustedt, because of A. similis McCall.
87-8 Stauroneis anceps var. javanica Hustedt Plate 280/9-11
Op 87, p 154, f 10.
We have been unable to locate a marked and/or named specimen of this taxon.
However, we did find a few specimens on slides with material from the cited
localities. As lectotype is selected:
l6l/35. Sumatra. Tobasee. TD2.
Finder: 342.2; 373-4-
Isolectotype:
161/36. Sumatra. Tobasee. TD2.
Finder: 375-9-
87-9 Navicula subrhynchocephala Hustedt Plate 281/1-6
Op 87, p 156, f 11.
We have examined all the slides made from the material cited by Hustedt
(161/31-33. Sumatra. Tobasee. P.2. 5 m. ). There are no marked specimens
on these. We found a few mainly fragmented valves that could be connected
with this taxon. In order to avoid errors, I designate here the following
slide as neotype, because it contains marked specimens named on the label:
N9/94. Java. R.Lamongan. Quellaustritt, an Felsblock.
Finder: 346.4-5; 401.7; 407-4-
(87-10 Navicula subgastrum Hustedt)
Op 87, p 157, f 12.
This taxon was first published - without description - in op 84, t 398,
f 3-7. See tx 84-29-
(87-11 Navicula gastriformis Hustedt)
Op 87, p 157, f 8.
This taxon was previously published - without description, in op 84, t 398,
f 17-19. See tx 84-31.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe»rambl<
179
87-12 Gomphonema undulatum Hustedt Plate 280/1
Op 87, P 166, f 34.
Holotype:
V/50. Sumatra. Tobasee. TD2.
Marked, unnamed specimen.
Finder: 346.8.
87-13 Denticula costata Hustedt Plate 282/1-5
, Op 87, P 169, f 25-
t
There are four slides with marked specimens from TD2, and the taxon's name
on their labels. Of these I determine as lectotype:
V/50. Sumatra. Tobasee. TD2.
Finder: 340.7 (i-type).
Isolectotypes:
V/47- Tobasee. Sumatra. TD2.d. V/49- Sumatra. Tobasee. TD2. b.
Finder: 341-5- Finder: 554-1.
V/48. Tobasee. Sumatra. TD2.c.
Finder: 407-7-
87-14 Denticula rhynchocephala Hustedt Plate 28l/7-8
Op 87, p 170, f 26a-b.
Because of Hustedt's excellent drawings we are able to identify the
individual specimens that he illustrated. These are marked and named on the
slide labels. However, the specimen illustrated on f 26 a-b is from
material from TD21b, whereas the variety is marked on two slides, one from
> TD21a, one from TD21b. Although the specific name occurs on the label of
slide V/40, it contains only a marked specimen of the variety.
Holotype:
£.. V/42. Tobasee. Sumatra. TD21b.
':; Finder: 3H-4-5.
V" 87-15 Denticula rhynchocephala var. tenuis Hustedt Plate 281/9-14
p: Op 87, p 170, f 26c-f.
*; See the remarks given with the preceding taxon. Two slides contain this
I taxon, marked specimens, named on the slide selected here as lectotype,
I; whereas the paralectotype bears erroneously only the specific epithet.
j> Lectotype:
w V/42. Tobasee. Sumatra. TD21b.
$ Finder: 312.2-3 (i-type f 26e); 315.4-5 (i-type f 26c-d).
^ Paralectotype:
k- V/40. Tobasee. Sumatra. TD21a.
f Finder: 318,7 (i-type f 26f).
:■ 87-16 Denticula amphicephala Hustedt Plate 283/1-3
V Op 87, p 170, f 27.

180
Holotype:
V/46. Sumatra. Tobasee. TDF4.
The taxon's name is on the label. No specimen of this abundant species
is marked.
87-17 Denticula amphicephala var. simplex Hustedt Plate 283/4-7
Op 87, p 170 (no illustration).
Hustedt did evidently not care to mark this rather rare taxon. We did find
very few specimens that can be connected with the taxon in question which
is, then, illustrated here for the first time. Lectotype:
V/46. Sumatra. Tobasee. TDF4*
Finder position of the unmarked specimen: 526.6.
Isolectotype:
l6l/54. Sumatra. Tobasee. TDF4.
Finder position of the unmarked specimen: 436.5.
87-18 Denticula lanceolata Hustedt Plate 283/8-12
Op 87, p 170, f 28.
Holotype:
V/45. Sumatra. Tobasee. TDK
Several specimenst including the i-type of f 28b, of this abundant species
in one circle. Name on the label.
Finder: 465*1*
87-19 Denticula vanheurckii var. trigona Hustedt Plate 282/6-8
Op 87, p 171, f 29*
There is only one slide with a marked specimen named on the label which
is therefore the holotype:
V/50. Sumatra. Tobasee. TD2.
Finder: 493*2.
87-20 Denticula robusta Hustedt Plate 284/1-6
Op 87, p 171, f 30a (only!).
Two slides contain marked specimens of this taxon and bear its name on
their labels. Of these I select as lectotype:
V/38. Tobasee. Sumatra. TD21a.
Finder: 289.5-8; 436.1; 472.6-9; 492.1-4; 583*8.
Isolectotype:
V/40. Tobasee. Sumatra. TD21a.
Finder: 254*1; 341.5-8; 372.1-2; 465.I; 583*2-3*
N.B. In op 98, p 448, Hustedt transfers the specimen depicted by him
as f 30b and c to a new taxon, Denticula robusta var. dubia Hustedt, see
tx 98-31.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*:
181
87-21 Denticula pelagica Hustedt Plate 285/1-8
Op 87, p 172, f 31*
There are three slides bearing the taxon's name on their labels, all
without marked specimens of this almost purely occurring species. As
lectotype is designated:
V/31. Sumatra. Toba-Sediment; P.l, 0.5 m.
Isolectotype:
V/32. Sumatra. Tobasee. PI. 0.5 m.
Paralectotype:
V/30. Tobasee. Sumatra. PI. 2.5 m.
%7-Tl Denticula pelagica var. intermedia Hustedt Plate 285/9-15
Op 87, p 172, f 32.
Holotype:
V/33. Tobasee. Sumatra. TDeB.
The taxon is very abundant, not marked, named on the label.
N.B. Virtually all specimens of this taxon are asymmetrical about the
transapical axis, i.e. on one side of the raphe the valve is broader than
on the other.
87-23 Epithemia zebra var. denticuloides Hustedt Plate 286/1-12
Op 87, p 173, f 19.
The taxon is marked, though not named, on two slides of which I select
as lectotype:
V/42. Tobasee. Sumatra. TD21b.
Finder: 252.8; 290.5; 317*6; 341*3; 376.8.
Paralectotype:
V/40. Tobasee. Sumatra. TD21a.
Finder: 351-7-8; 352.2 (2 specimens, of which one is i-type of f 19d/f,
the other probably of f 19e).
87-24 Nitzschia rugosa Hustedt Plate 283/13-15
Op 87, p 175, f 7* See also op 98, p 467, t 40/ll.
Hustedt's description is evidently based on Recent material. No marked
specimen from Lake Toba exists. We found one specimen, in a very oblique
position and therefore ill-suited for photography, on one slide (161/31.
Sumatra. Tobasee. P.2. - Finder position 410.3). In accordance with the
protologue I select here as lectotype a specimen from Recent material:
Wl/35. Java, Rami Lamongan. Quelle 3, Abfluft. KLQu3b. 19*11*28.
Two marked, unnamed specimens in the same circle.
Finder: 374*5-8.
N.B. In op 103, p 38l, Hustedt renames this taxon: Nitzschia pseudo-
hungarica Hustedt, because of N. rugosa 0strup.

182
87-25 Nitzschia ingenua Hustedt Plate 287/1-5
Op 87, p 175, f 22.
Hustedt did not mark or name any specimen of this taxon. In the Toba Lake
sediments we found two specimens on two slides:
l6l/35. Sumatra. Tobasee. TD2.
Finder: 430.7*
161/46. Tobasee. Sumatra. TD8.
Finder: 41*.8.
None of the two specimens above agrees with Hustedt's illustration, both
are longer (l60 and 113 |im respectively). I am certain that Hustedt used
Recent material for his drawing. The species is abundant on the following
slide, quite in accordance with what Hustedt wrote in op 98, p 470,
t 40/9-10, and this slide is here selected as neotype:
Wl/35- Java, Ranu Lamongan. Quelle 3, Abfluft. KLQu3b. 19.11.28.
87-26 Surirella spinifera Hustedt Plate 288/1-3
Op 87, p 178, f 36.
In the collection there are three slides with the taxon's name on the
labels, one of them being the holotype:
X2/95. Sumatra. Toba See. TD2.
This is a single mount with the i-type.
Paratype:
X2/94. Toba-See. Sumatra.
Also a single mount, made somewhat later than the preceding one and made
with Recent material.
Further specimen:
X2/96. Musi bei Palembang. Sumatra. M.12.
Marked specimen named on the label.
Finder: 345.6.
N.B. All these slides have in common the following inscription on the
right-hand label: "Surirella spinifera Hust. = S. Mulleri Forti."
87-27 Surirella pseudosplendida Hustedt Plate 287/6-7
Op 87, p 178, f 37.
There is only one slide with a marked - unnamed - specimen which I
determine as lectotype:
X10/12. Tobasee. Sumatra. PI. 2m.
Finder: 552.8.
We found another specimen which is not marked:
l6l/21. Sumatra. Tobasee. P.2. 0.3 m.
Finder position of this unmarked specimen: 530.2.
87-28 Surirella biseriata var. robusta Hustedt Plate 289/1-3
Op 87, p 179, f 38.
There are three slides with picked specimens, all bearing the taxon's name
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
183
on their labels and all with otherwise identical labels. The lectotype
shall be:
Xl/49. Sumatra. Toba See. TD2.
Isolectotypes:
Xl/50. Sumatra. Toba See, TD2. Xl/51. Sumatra, Toba-See. TD2.
87-29 Surirella feuerbornii Hustedt Plate 290/1-5
Op 87, p 179, f 17.
There are two slides with picked specimens, both with the taxon's name
on their labels. Of these I select the i-type as lectotype, although it
is from Recent material:
X2/41. Toba-See. Sumatra.
Paralectotype:
X2/40. Sumatra. Toba See. TD2,
87-30 Surirella thienemannii Hustedt Plate 291/1-4
Op 87, p 179, f 18.
Two slides with picked specimens bear the taxon's name on their labels.
Of these I determine that containing the i-type as lectotype:
X4/78. Sumatra. Toba See. TD2.
Isolectotype:
X4/77- Sumatra. Toba See. TD2.
Op. 87A. Contribution (p 73 and t 8) in: 0. Wetzel, Die Mikropalaeonto-
logie des Heiligenhafener Kieseltones (Ober-Eozan). Jahresber. Nieder-
sachs. geol. Vereins zu Hannover 27, 41-75, 1935-
Initial remark:
The taxa included by Hustedt in this paper are all on a single slide, a
"Typenplatte" mounted by Albert Elger, Eutin. Since no descriptions
accompanied the - rather poorly executed and very small - illustrations, all
these taxa represent formally nomina nuda, except nos. 2 and 3, which
Hustedt described later in A. Schmidts Atlas. In order to validate the
remaining taxa, short diagnoses/descriptions are here given.
87A-1 Coscinodiscus pseudomarginatus Hustedt Plates 292/1-3, 293/1
Op 87A, p 73, t 8/3 and 7.
Validating diagnosis: This taxon differs from Coscinodiscus marginatus
Ehrenberg by the marginal zone which is much less
sharply offsett. The outer vela appear to be finer
in structure, because they could not be resolved
in LM, which latter is the case in C. marginatus.

184
Holotype:
Ztl/l8. Heiligenhafen in Holstein. marin fossil. Typenplatte mit 20 Formen,
There are two specimens of this taxon on the slide, row 1 no. 3 (i-type
f 3) and row 2 no. 2 (i-type f 7)-
87A-2 Triceratium subvenosum Hustedt Plate 294/1
Op 87A, p 73, t 8/13.
Holotype:
2tl/l8. Heiligenhafen in Holstein. marin fossil. Typenplatte mit 20 Formen.
N.B. In the same paper (op 87A, p 75, "Nachtrag") Hustedt synonymizes
this taxon with Triceratium polycystinorum Pantocsek. The same specimen
is also figured in op 168, t 478/22, as T. polycystinorum. There the paper
of Wetzel is also referred to, although with incorrect date.
87A-3 Triceratium wetzelii Hustedt Plate 293/2-3
Op 87A, p 73, t 8/15.
Holotype:
Ztl/l8. Heiligenhafen in Holstein. marin fossil. Typenplatte mit 20 Formen,
N.B. In the same paper (op 87A, p 75, "Nachtrag") Hustedt synonymizes
this taxon with Triceratium radiopunctatum A. Schmidt. - However, in op
167, t 469/1, Hustedt figures the same specimen as above, with reference
to the above paper, including a description, but now he rejects the
combination with Tr. radiopunctatum A. Schmidt.
87A-4 Triceratium pseudotrisulcum Hustedt Plate 295/1-2
Op 87A, p 73, t 8/16.
Validating diagnosis: Differs from Triceratium trisulcum J.W. Bailey by
the more slender and more capitate poles which are
not separated from the central part by pseudosepta
or ribs. The entire valve is much flatter in
sculpture, the poles being only slightly raised above
the general valve face plane.
Holotype:
Ztl/l8. Heiligenhafen in Holstein. marin fossil. Typenplatte mit 20 Formen.
87A-5 Stictodiscus hardmanianus forma trigona Hustedt. Plate 294/2, 487/1-2
Op 87A, p 73, t 8/l7; op 116, t 452/2; see also remarks under tx 116—8.
Validating diagnosis: This taxon differs from Stictodiscus hardmanianus
Greville by the triangular outline.
Holotype:
Ztl/l8. Heiligenhafen in Holstein. marin fossil. Typenplatte mit 20 Formen.
87A-6 Triceratium wittii forma pentagona Hustedt Plate 296/1-2
Op 87A, p 73, t 8/18-19.
Validating diagnosis: This taxon differs from Triceratium wittii A. Schmidt
by its five-sided outline.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
185
Holotype:
Ztl/18. Heiligenhafen in Holstein. marin fossil. Typenplatte mit 20 Formen.
87A-7 Hemiaulus elgeri Hustedt Plate 297/1-2
Op 87A, p 73, t 8/2].
Validating description: This taxon is unique within the genus Hemiaulus
by the sculpture of its valves which are similar
to viking helmets, with the horns being first bent
outwards, then parallel, and near the tips again
outwards, thus forming a wide lyra. The horns are
circular in cross section. .The valve face is only
sparsely and apparently irregularly ornamented
by areolae. A labiate process could not be found.
Holotype: .
Ztl/l8. Heiligenhafen in Holstein. marin fossil. Typenplatte mit 20 Formen.
N.B. This taxon would belong in the genus Dicladiopsis De Toni,
according to the ideas put forth by Ross & Sims (Bull. Br. Mus. nat. Hist.
(Bot.) 13, 277-381, 1985), and Mr Ross just informs me that it should be
included as synonym in Dicladiopsis perlonga (Pantocsek) Ross & Sims (op.
cit., p 322).
Op. 88. Contribution (p 167-168) in: G. Huber-Pestalozzi, Phytoplankton
aus Seen und Sumpfen Javas, gesammelt von Prof. Schroter-Zurich. Ber.
Schweiz. Bot. Ges. 46, 131-168, 1936.
88-1 Surirella huberi Hustedt Plate 298/1-4
Op 88, p 167, f 13.
There are two slides made with the original material, both without marked
specimens of the frequent taxon. As lectotype is chosen:
X3/60. Kratersee des Kelout, Ostjava. PI.
Isolectotype:
X3/61. Kratersee des Kelout, Ostjava. PI.
N.B. The right-hand label of both slides reads: "Surirella Huberi
Hust. = S. inducta A.S." - In op 108, p 168 (footnote), Hustedt
synonymizes this taxon with and includes it in Surirella rorata Frenguelli.
It may be interesting to note that the following two slides in the
box, nos. X3/62 and 63, are from the collection of J. Frenguelli. On the
labels of these is written in Hustedt's hand: "Sur. inducta A.S. (= S.
rorata Fr.)".

186
Op. 89. A. Schmidts Atlas der Diatomaceenkunde, Heft 101-102, t 401-408,
1936.
89-1 Navicula perventralis Hustedt Plate 298/5-11
Op 89, t 401/3-5.
Description in op 94, p 241, t 17/49-50, where this taxon was also declared
as "nov. spec." (tx 94-41). See also, op 171, p 224, f 1342.
Two slides bear the taxon's name on their labels and contain marked
specimens. Of these the following is selected as lectotype:
N6/42. Danau di Atas. Sumatra. A2a.
Finder: 494-2-5; 496.7; 501.2.
Paralectotype:
N17/l6. Danau di Atas. Sumatra. Alaa.
Finder: 521.1.
89-2 Navicula semlaperta Hustedt Plate 298/15-17
op 89, t 401/14-16.
Description in op 170, p 71, f 1215.
Holotype:
N12/99. Norwegen. Framvaren. 164m. ob. b.
Marked specimen named on the label.
Finder: 375.8.
89-3 Navicula arvensis Hustedt Plate 299/1-6
Op 89, t 401/22-26.
Description in op 94, p 249, t 20/19-20, where this taxon was also declared
as "nov. spec." (tx 95-50. See also op 170, p 86, f 1229.
Holotype:
Nl/13. Sumatra. Sawah bei Singkarak. SKS3.
Marked specimens named on label.
Finder: 464.6; 494.2; 494.8; 495-1-2.
N.B. We were able to resolve the structure of part of a valve and
counted about 44 striae in 10 um.
89-4 Navicula agrestis Hustedt Plate 299/7-15
Pp 89, t 401/27-29.
Description in op 94, p 246, t 20/21-22, where this taxon was also declared
as "nov. spec." (tx 94-46).
Holotype:
Nl/13- Sumatra. Sawah bei Singkarak. SKS3.
Marked specimens named on label.
Finder: 463.4 (2 specimens); 495-7; 496.8-9.
SCANNED SdJVUED BY pAhUTA yDRI, Kiev-2007, e-mail pahutaqwe.rambler.,
TV
187
89-5 Navicula marginestriata Hustedt Plate 298/12-14
Op 89, t 401/34-36.
Description in op 94, p 252, t 20/26, where this taxon was also declared
as "nov. spec." (tx 94-53)-
Holotype:
394/85• Tobasee. Sumatra. TSlc.
Marked, unnamed specimen.
Finder: 408.2-5.
89-6 Navicula adnata Hustedt Plate 299/16-20
Op 89, t 401/37-40.
Description in op 94, P 264, t 19/l6-17, where this taxon was also declared
as "nov. spec." (tx 94-60).
Of the two slides with the taxon's name on the labels none is with marked
specimens, the species being abundant. Lectotype:
N13/51- Java. Quelle am Lamongan-See. KL Qu lb.
Isolectotype:
Nl/ll. Java. R.Lamongan. Quelle-Austritt. Kalktuff. KLQulb. 17-11-28.
89-7 Navicula brevissjjna Hustedt Plate 299/21-27
Op 89, t 401/41-43-
Description in op 94, P 273, t 19/22-24, where this taxon was also declared
as "nov. spec." (tx 94-72). See also op 171, p 238, f 1362.
The taxon is abundant on the following slides, not marked, name on the
I labels. Lectotype:
i Nl/74- Java, Telaga Warna. D2cB.
Paralectotype:
; Nl/73* Telaga Warna. Java. D2aa.
89-7a Navicula curta Hustedt Plate 299/28-33
■Op 89, t 401/44-49-
: inscription in op 94, p 272, t 20/1-3, where this taxon was also declared
5 as "nov. spec." (tx 94-70).
*:' The taxon is unmarked, abundant on the following slides which have both
I the name on their labels. Lectotype:
§] N2/31. Java, Die. Dieng Plateau. Telaga Merdodo.
I' Isolectotype:
f N2/32. Telaga Merdodo, Java. Die.
|;V N.B. This species was renamed by VanLandingham (Catalogue 5, p 2494,
H 1975): Navicula diengensis VanLandingham, because of Nav. curta Peragallo.
*5T"
P ""
|: 89-8 Navicula pseudomuralis Hustedt Plate 300/1-8
|.0p 89, t 401/64-67.
I Description in op 94, p 245, t 19/25-27, where this taxon was also declared

188
as "nov. spec." (tx 94-45). See also op 171, p 236, f 1360.
Holotype:
N6/89* Java, R.Lamongan. Quelle 1. KLQulb.
The taxon is frequent, unmarked, named on the label.
N.B. The structure of the transapical striae is very different from
that illustrated by Hustedt.
89-9 Navicula seminuloides Hustedt Plate 300/9-15
Op 89, t 401/68-71.
Description in op 94, p 239, t 17/29-31, where this taxon was also declared
as "nov. spec." (tx 94-38). See also op 171, P 244, f 1369.
Holotype:
N7/62. Sumatra. Quelle am Tobasee. TW3e.
Marked specimens named on label.
Finder: 499.6-9} 527-1-4; 527-4-7; 560.1.
89-10 Navicula seminuloides var. sumatrana Hustedt Plate 300/16-20
Op 89, t 401/72-76.
Description in op 94, p 239, t 17/32-33, where this taxon was also declared
as "nov. var." (tx 94-39), and where this variety was erroneously named
"sumatrensis".
The taxon is nowhere marked or named. We found it on a slide in appreciable
number, also, accidentally with another taxon, enclosed in a circle. This
is here designated as lectotype:
W8/88. Tobasee. Sumatra. TNla.
Finder: 440.6 (several specimens).
N.B. In op 171, p 244, Hustedt includes this taxon in the species,
Navicula seminuloides Hustedt.
89-11 Navicula vasta Hustedt Plate 300/21-28
Op 89, t 401/77-80.
Description in op 94, p 273, t 19/19-21, where this taxon was also declared
as "nov. spec." (tx 94-70- See also op 109, p 112 (under Nav. rivularis
Hustedt) and op 126, p 351 (under N. muraloides).
Holotype:
N8/90. Java. Tengger. Quelle. TGld.
Marked specimens named on the label.
Finder: 437.8; 464.1; 465-3; 471.1; 472.2-5; 473-3-6; 474-1-
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 96, 1985) include this
taxon in Navicula stroemii Hustedt (cf. tx 75-3).
89-12 Navicula tenerrima Hustedt Plate 300/29-38
op 89, t 401/81-83.
Description in op 94, p 247, t 18/30-31, where this taxon was also declared
as "nov. spec." (tx 94-49)- See also op 171, p 260, f 1388.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
189
Two slides contain marked specimens named on the labels. As lectotype is
'here chosen:
N8/48. Java, Tengger. Quelle 1. TGla.
Finder: 290.3-6; 344-5-
Isolectotype:
N8/47- Java, Tengger, Quelle 1. TGla.
Finder: 315-4-7-
'89-13 Navicula bella Hustedt Plate 300/39-42
* Op 89, t 401/84.
Description in op 94, p 245, t 17/37, where this taxon was'also declared
as "nov. spec." (tx 94-44).
There are two slides with one marked specimen each named on the label.
Due to the statements in the protologue in op 94 the following must be
considered as the holotype:
Nl/59. Tobasee. Sumatra. TBlg.
^Finder: 282.5-
* Paratype:
i".- N12/20. Sumatra, Tobasee. TBlc.
Finder: 438.6.
: 89-14 Navicula nympharum Hustedt Plate 301/1-6
JyQp 89, t 401/85-87.
;■ Description in op 94, p 247, t 18/32-33, where this taxon was also declared
; as "nov. spec." (tx 94-48).
rHolotype:
L-N6/8. Java, R.Bedali, Gr. Badequelle. KB5i.
irMarked specimens named on the label.
'Finder: 373-3; 428.6-9; 429-7; 459-5-
?89-15 Navicula subnympharum Hustedt Plate 301/7-12
i?0p ; 89, t 401/88-89.
'Description in op 170, p 144, f 1276.
& There are two slides with marked specimens named on the labels. As lecto-
itype is here proposed:
IH12/53. Dagmar-Quelle. Pojoviken. Finnland.
^Finder: 369-3; 399-8; 459-5-6.
f; Isolectotype:
|f;;N8/89. Dagmar-Quelle. Pojoviken. Finnland.
V. Finder: 440.1; 500.4-
f$9-16 Navicula lenzii Hustedt Plate 301/l3-20
pop 89, t 401/90-92.
I Description in op 126, p 347; see also op 170, p 128, f 1260.
£ Of the two slides with marked and named specimens the following is here
^selected as lectotype:

190
Nll/26. Gr. Madebroken S. 5 l/2 m, Plon. (correct: Madebrokensee)
Finder: 616.2-5; 619.2-5-
Isolectotype:
N15/73- Gr. Madebroken S. 5 l/2 m. Plon.
Finder: 309-5; 557-2-5-
89-17 Navicula perlucida Hustedt Plate 301/21-28
Op 89, t 401/93-94-
Description in op 94, p 250, t 17/43-44, where this taxon was also declared
as "nov. spec." (tx 94-50-
Two slides have the name of this (rather frequent) taxon on their labels,
one of them contains marked specimens and is therefore taken here as
leetotype:
N8/66. Sumatra, Ajer Upi beim Ranau-See. RBlh.
Finder: 345.1; 494-5-6 (4 specimens).
Isolectotype:
N3/27. Sumatra, Ajer Upi am Ranausee. RBlh.
N.B. The transapical striae, "invisible" to Hustedt, could now be
resolved, we counted about 42 in 10 um.
89-18 Navicula rupicola Hustedt Plate 301/32-37
op 89, t 401/103-105.
Description in op 94, p 242, t 17/45-48, where this taxon was also declared
as "nov. spec." (tx 94-42). See also op 171, p 218, f 1335-
The taxon's name is on the labels of two slides, but only one contains
marked specimens and is here taken as lectotype:
N8/66. Sumatra. Ajer Upi beim Ranau-See. RBlh.
Finder: 345-1; 374-2-3; 404-5-6; 435-2.
Isplectotype:
N3/27- Sumatra, Ajer Upi am Ranausee. RBlh.
89-19 Navicula spirata Hustedt Plate 302/1-7
Op 89, t 401/114-115 (erroneously printed 113-114)-
Description in op 94, p 240, t 17/34-35, where this taxon was also declared
as "nov. spec." (tx 94-40). See also op 171, p 237, f 1361.
The taxon is nowhere named, marked only on one slide which must therefore
be considered as holotype:
160/73. Sumatra. TH5d. Toba-Heide. Tiimpel,
Finder: 584.7-
A few more unmarked specimens of this infrequent taxon were photographed.
89-20 Navicula pseudoventralis Hustedt Plate 301/38-42
op 89, t 401/116-118.
Description in op 126, p 351 (under Navicula modica); see also op 140,
p 631, and particularly op 170, p 153, f 1285-
sCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei>rambler.ru
191
Holotype:
N15/73- Gr. Madebroken S. S 1/2 m, P16n.
Marked specimens named on index sheet.
Finder: 223-2; 341-5-8; 428.6-9; 582.5-6.
89-21 Navicula brekkaensis var. bigibba Hustedt Plate 301/29-31
Op 89, t 402/28.
Description in op 94, p 243, t 18/28, where this taxon was also declared
as "nov. var." (tx 94-43)- See also op 171, p 212, f 1329h (there as forma).
Holotype:
Nl/83. Sumatra. Ranau-See. R5aB.
Marked specimen named on the label.
Finder: 437-5-6.
Two unmarked specimens are included in the atlas.
89-22 Navicula ruttneri Hustedt Plate 302/12-22
Op 89, t 402/30-38, 49-52.
Description included in plate explanation. Better description in op 94,
p 238, t 17/18-23, where this taxon was also declared as "nov. spec."
(tx 94-35)-
Slides with unmarked specimens of this frequent or abundant taxon exist
with material from two of the three localities named in the protologue.
The taxon's name is on two slides. Lectotype:
N7/38. Java, R.Pakis, Quelle 3- KLQu3b.
The other slide:
N7/37- Java, R.Lamongan. Quelle 1. KLQulaB.
89-23 Navicula ruttneri var. capitata Hustedt Plate 302/23-29
op 89, t 402/47-48.
Description in op 94, p 238, t 17/24-26, where this taxon was also declared
as "nov. var." (tx 94-36).
We were unable to find any marked or unmarked specimens from the locality
cited in the protologue (samples nos. 667-683 in op 99, P 773)- The taxon
is marked, with name on the label, on a slide from another locality,
however. This slide is here designated as neotype:
Nal/35. Java, Telaga Pasir, AbfluB. SP5ba.
Finder: 312.9 (2 specimens); 314-1 (2 specimens); 373*3 (2 specimens).
The taxon is not rare, a few unmarked specimens are here also shown.
89-24 Navicula ruttneri var. rostrata Hustedt Plate 302/30-35
Op 89, t 402/39-46.
Description in op 94, P 238, t 17/27-28, where this taxon was also declared
as "nov. var." (tx 94-37)-
One slide from one of the two localities recorded in the protologue bears
the taxon's name on the label. It is therefore taken as lectotype:

192
N7/39- Sumatra. Heifie Quellen Wai Panas am Ranau-See. RWlb.
The taxon is abundant, not marked.
89-25 Navicula thienemannii Hustedt Plate 303/1-7
Op 89, t 402/53-56.
Description in op 94, p 235, t 17/16-17, where this taxon is also declared
as "nov. spec." (tx 94-33).
There are three slides, each with one marked specimen named on the label.
Of these the following is chosen as lectotype:
N9/94- J ava, R.Lamongan; Quellaustritt, an Felsblock.
Finder: 315.2-5-
Paralectotypes:
N9/95- J ava, R.Lamongan. Quelle-Austritt. Moos. KLQulca.
Finder: 375-4-5-
N12/52. Java, R.Lamongan. Quelle-Austritt. KLQulaB.
Finder: 553-5-6.
89-26 Navicula gibbosa Hustedt Plate 303/8
Op 89, t 402/57-58.
Description in op 94, p 253, t 18/10, where this taxon was also declared
as "nov. spec." (tx 94-54)- See also op 171, p 220, f 1337-
Holotype:
N3/28. Tobasee. Sumatra. TBlf,
Marked specimen named on the label.
Finder: 406.9.
89-27 Navicula subsulcata Hustedt Plate 303/9-10
op 89, t 402/59-60.
Description in op 94, P. 251, t l8/7, where this taxon was also declared
as "nov. spec." (tx 94-52).
Holotype:
Nll/92. Subang Pad. Sumatra. Bach. SKBlia.
Marked specimen named on the label.
Finder: 584-3.
89-28 Navicula margaritacea Hustedt Plate 302/8-11
Op 89, t 402/61-62.
Description in op 94, p 253, t 17/38-39, where this taxon was also declared
as "nov. spec." (tx 94-55)- See also op 171, p 217, f 1333-
Two slides, from the localities given in the protologue, contain marked
specimens named on the labels. As lectotype is here taken:
N4/82. Java. Telaga Pasir. Abfluft. SP5cB.
Finder: 526.4-5-
The other slide:
N5/59- Sumatra. SKB2c. Bach am Subangpali.
Finder: 586.3-
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
193
89-29 Navicula invicta Hustedt Plate 303/17-20
Op 89, t 402/63.
Description in op 94, P 254, t 17/42, where this taxon was also declared
as "nov. spec." (tx 94-56).
Holotype:
Nll/92. Subang Pali. Sumatra. Bach. SKBlia.
Marked, unnamed specimen.
Finder: 558.5-8.
N.B. The striae, so far not resolved ("Struktur nicht auflosbar!"),
1 amount to 36-38 in 10 urn only, but they are too delicate to be resolved
'in ordinary direct brightfield illumination.
89-30 Navicula subcostulata var. rostrata Hustedt Plate 303/11-16
op 89, t 402/65.
Description included in plate explanation.
Holotype:
N17/27. Rumanien. I.
Marked specimen named "Nav. subcostulatoides" on the index sheet.
Finder: 584.1-4-
Isotype:
N15/42. Rumanien. 2.
Marked specimen named "Nav. subcostulatoides" on the index sheet.
Finder: 342.5-8.
89-31 Navicula gradata Hustedt Plate 303/21-22
op 89, t 402/67-68.
Description in op 94, p 271, t I9/8, where this taxon was also declared
as "nov. spec." (tx 94-69)-
Holotype:
N3/31. Bach. Subang-Pafi. Sumatra. SKBlb.
Marked specimen named on the label.
Finder: 558-4-
89-32 Navicula plana Hustedt Plate 303/23-24
Op 89, t 402/69-70 (nee 68!).
Description in op 94, p 275, t 19/7, where this taxon was also declared
as "nov. spec." (tx 94-74).
Holotype:
N6/57. Manindjau-See. Sumatra- FM2e.
Marked specimen named on the label.
Finder: 528.5-8.
89-33 Diatomella mimita Hustedt Plate 303/25-26
op 89, t 403/1-2.
Validating description: Valvae lineari-ellipticae, apicibus rotundatis,

194
circiter 8-10 um longae, 3-3*5 urn latae, duobus
septis angustis.
Holotype:
199/94. Nordasot. 87 m. A. Norwegen. ("Nordasot" = misread Nordasvatn)
Marked, unnamed specimen in very oblique position.
Finder: 406.2-3.
89-34 Navicula cingulata Hustedt Plate 304/1-5
Op 89. t 403/3-4.
Of the two slides with marked specimens, both with names on the index
sheets, the following is taken as lectotype:
199/96. Nordasot. 87 m. A. Norwegen.
Finder: 469.3.
Isolectotype:
199/97a. Nordasot. 87 m. A. Norwegen.
Finder: 371.1-4-
Nordasot is a misreading by Hustedt of the abbreviated form written by
K.M. Strom "Nordasvt." = Nordasvatn, a lake near Bergen.
N.B. In op 135, p 405 (under Navicula areolata) Hustedt synonymizes
this taxon. with and includes it in Nav. entoleia Cleve. See also op 175,
p 66l, f l66l. - In Hustedt's copy of the Atlas is a pencil-written note
in Hustedt*s hand "= Nav.-entoleia CI. 1896".
89-35 Navicula diploneoides Hustedt Plate 303/27-29
Op 89, t 403/5-6.
Description in op 148, p 22, t 8/21.
Holotype:
199/97b. Nordasot. 87 m. A. Norwegen.
Marked, unnamed specimen.
Finder: 282.7.
89-36 Navicula dissipata Hustedt Plate 303/30-35
Op 89, t 403/7-8.
Description in op 114, p 273 (under Navicula auriculata Hustedt). See also
op 155, p 117 (under Navicula teneroides Hustedt) and op 172, p 549, f
1587.
Holotype:
199/93. Nordasot. 87 m. A. Norwegen.
Marked specimen named on index sheet.
Finder: 281.9 (i-type f 7-8).
Isotype:
199/97b. Nordasot. 87 m. A. Norwegen.
Marked specimen named on index sheet.
Finder: 401.1.
N.B. "Nordasot" is a misreading of Nordasvatn, a lake near Bergen.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler. i
195
89-37 Navicula glabriuscula Hustedt Plate 304/6-12
Op 89, t 403/9-12.
Validating description: Valvae late lanceolatae, apicibus leviter protrac-
tis, subacutis, 18-31 urn longae, 9-13 Mm latae,
striis brevis marginalibus.
There are six slides with marked specimens, all named on the relevant index
sheets. As lectotype is selected:
N14/61. Campeche Bay. 63.
Finder: 495.7-
1Isolectotypes:
5Zt3/64. Campeche Bay. 63a. Zt3/68. Campeche Bay. 63a.
Finder: 291.3-6. Finder: 408.6.
Zt3/66. Campeche Bay. 63a. Zt3/69- Campeche Bay. 63a.
Finder: 281.6-9; 314-3; 402.7- Finder: 403.3-6; 470.8.
Zt3/67. Campeche Bay. 63a.
Finder: 552-4-5-
89-38 Navicula radiostriata Hustedt Plate 305/1-6
op 89, t 403/13-15.
Validating description: Valvae latissime lanceolatae, apicibus protractis,
subacutis, 27-42 urn longae, 14-20 urn latae.
Holotype:
2t3/69. Campeche Bay. 63a.
Marked specimens named on sheet.
Finder: 342.6-9 (i-type f 14); 437-8 (i-type f 13)-
Isotypes:
Zt3/72. Campeche Bay. 63a.
Marked, unnamed specimen.
Finder: 405-9 (i-type f 15?).
Zt3/63- Campeche Bay. 63a.
Marked specimen with the taxon's name plus interrogation mark on the
index sheet.
Finder: 374.8-9.
89-39 Navicula feuerbornii Hustedt Plate 305/11-17
Op 89, t 403/21-24.
Description in op 94, p 269, t 19/9-10, where this taxon was also declared
as "nov. spec." (tx 94-66).
There are two slides with marked specimens named on the labels. As
lectotype is here chosen:
N2/98. Tjibeureum. Wasserfall. Java. TJ2 IIIc.
Finder: 432-7; 461.4-5; 528.7 (2 specimens); 530.5; 584.5-8.
Paralectotype:
N2/99. Tjibeureum, Wasserfall. Java. TJ2 Illb (l).
Finder: 411.2; 524.4-

196
89-40 Navicula obscura Hustedt Plate 305/7-8
Op 89, t 403/25-26.
Description in op 94, p 278, t 20/15, where this taxon was also declared
as "nov. spec." (tx 94-75)-
Holotype:
N7/l6. Danau di Atas, Sumatra. Alaa.
Marked specimen named on the label.
Finder: 490.1.
N.B. The structure of the transapical striae near the apices is
different from Hustedt's illustrations. The striae are interrupted,
resulting in short ribs of apical direction, a phenomenon which is also known
in other species.
There is a discrepancy as for the type locality of this taxon.
Hustedt's record in op 89 ("AbfluO des Singkaraksees, Sumatra") must be
erroneous, because in op 94, P 278, he states that this is a single
observation in material from the east bank of the Danau di Atas, the material
contained on the above type slide. The taxon is also not recorded in the
list of the Singkarak Lake.
Because of the priority of other authors (e.g. Pantocsek 1908) this
taxon has to be renamed: Navicula atasensis Simonsen, nov. nomen, synonym
Navicula obscura Hustedt, op 89, t 403/25-26, op 94, p 278.
89-41 Navicula gastrum vaf. signata Hustedt Plate 306/8-10
Op 89, t 403/27-28.
Description in op 114, p 283J also in op 175, P 799*
We were able to locate a slide with Ancylus clay from Finnland. Therefore
the following slide is here proposed as lectotype:
N13/28. Ladoga-See. 50 m. c.
Marked, unnamed specimen.
Finder: 339-5.
89-41a Navicula cinctaeformis Hustedt Plate 306/1-7
op 89, t 403/29-31.
Description in op 94, p 265, t 19/11-12, where this taxon was also declared
as "nov. spec." (tx 94-62).
Of the two slides with marked and named specimens the following is here
selected as lectotype:
Nl/90. Danau di Atas. Sumatra. A2b.
Finder: 458.9; 463-3-6; 497-4-
Paralectotype:
N7/16. Danau di Atas. Sumatra. Alaa,
Finder: 518.3-6; 551-1-2.
89-42 Navicula brevirostrata Hustedt Plate 306/15-21
Op 89, t 403/32-34.
Validating description: Valvae late lanceolatae, apicibus rostratis, sub-
acutis, circiter 12-15 urn longae, 4-5 urn latae,
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
197
striis radiantibus, 24-26 in 10 urn.
The taxon is nowhere marked or named, and we are not in the position to
present a type. On one slide with material from the type locality a very
similar specimen was found which was probably accidentally marked along
with another taxon (tx 89-62) which latter is named by its generic name
on the index sheet. We present this specimen here without intention to
combine it definitely with Hustedt's taxon. It is on the following slide:
Zt3/99- Campeche Bay. 63a.
Finder: 379-7-
A fragment, unmarked, was found on the following slide:
Zt3/67. Campeche Bay. 63a.
Finder: 379-5-
N.B. The strial density amounts to 24-26 in 10 \xm only, however, the
striae are extremely delicate and consequently difficult to make visible.
89-43 Navicula kuripanensis Hustedt Plate 307/1-7.
Op 89, t 403/38-42.
Description in op 94, P 270, t 20/23-24, where this taxon was also declared
as "nov. spec." (tx 94-67).
Holotype:
N4/76. Java. Kuripan. Quellabflufi. BK5a.
The taxon is abundant, not marked, named on the label.
89-44 Navicula subvasta Hustedt Plate 306/22-31
Op 89, t 403/49-50.
Description in op 109, p 112 (under Navicula rivularis Hustedt), also in
op 117, P 930, t 41/38-40.
The taxon is marked on three slides but never named. As lectotype is here
chosen:
N17/27. Rumanien. 1.
Finder: 497-8; 527.6-9.
Isolectotypes:
N17/29. Rumanien. 4, N15/42. Rumanien. 2.
Finder: 554-3- Finder: 528.4.
N.B. In op 117, p 973, in "Berichtigungen und Nachtrage", Hustedt
synonymizes this taxon with and includes it in Navicula helensis Schulz.
89-45 Navicula obtusangula Hustedt Plate 305/9-IO
Op 89, t 403/54-55.
Description in op 171, p 274, f 1404 (as Nav. paanensis).
Holotype:
N13/28. Ladoga-See. 50 m. c. (old slide no. N1228)
Marked, unnamed specimen.
Finder: 317-2-5-
N.B. Because of Navicula obtusangula Hustedt 1934 (tx 84-4) the epithet

198
of tx 89-45 was not tenable. In op 171, p 274, Hustedt synonymized his
taxon with Navicula paanensis Cleve-Euler.
89-46 Navicula cryptocephaloides Hustedt Plate 307/8-15
Op 89, t 403/56-59.
Description in op 94, p 26l, t 18/1-2, where this taxon was also declared
as "nov. spec." (tx 94-59)-
The taxon's name appears on four slides, three of which are from different
samples of the type locality. The taxon occurs in masses on these slides,
and no specimens are marked. As lectotype is here proposed:
N2/30. Java, Kuripan. Quellabflufi. BK4d.
Paralectotypes:
N2/27. Java, Kuripan. Salz-Quelltumpel. BK4b.
N2/28. Java, Kuripan. Salzquelle, Pfutze. B.29.C.
Further slide:
N2/29. Telaga Pengilan. Java. D3.
This slide contains marked specimens.
Finder: 378.1; 431-5; 436.7-8; 556.2-5.
89-47 Navicula amygdalina Hustedt Plate 307/16-20
Op 89, t 404/1-5-
Description in op 108, p 62.
The taxon was originally illustrated with specimens from two different
localities. As lectotype is therefore chosen:
N13/28. Ladoga-See. 50 m. c.
Marked, unnamed specimen.
Finder: 409.2-5 (i-type f 1-2).
Further slide:
N13/89. Suistamonjarvi. 17 m. 6.7.31- Finnland. c.
Marked specimen named on index sheet.
Finder: 312.9 (i-type f 3-4).
N.B. In op 175, p 643, f 1645, Hustedt synonymizes this taxon with
and includes it in Navicula aboensis (Cleve e.p.) Hustedt.
89-48 Navicula jaernefeltii Hustedt Plate 308/1-9
Op 89, t 404/6-13.
Description included in plate explanation. More exhaustive description
in op 109, p 111. See also op 170, p 138, f 1272.
The following slide is here taken as lectotype:
N12/84. See am Ostfuft des Wuokatti, Finnland.
Marked specimens named on the label.
Finder: 314-1-4; 315-4-5; 318.1; 348.4-7; 370.8-9-
Further slide:
N19/12. Aokiko, Japan. 4-
Marked specimens named on the label.
Finder: 373-4; 376,4-7 (2 specimens); 432.1-4; 469-4 (with interrog. mark).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweSrambler.
199
89-49 Navicula utermoehlii Hustedt Plate 306/11-14
Op 89, t 404/31-32.
Description in op 108, p 62; see also op 112, p 164; op 157, p 280;
description also in op 171, p 272, f 1401.
Holotype:
N15/73. Gr. Madebroken S. 5 l/2 m. Plbn.
Marked specimens named on index sheet.
Finder: 497.1-2; 585-7.
89-50 Navicula subatomoides Hustedt Plate 308/15-24
Op 89, t 404/33-35-
Description included in plate explanation. Description also in op 126,
P 437, t 38/77-79, and in op 171, p 271, f 1400.
Holotype:
NI2/84. See am Ostfuft des Wuokatti. Finnland,
Marked specimens named "Nav." on index sheet.
Finder: 285-5-8 (3 specimens); 46I.I; 500,2.
N.B. Lange-Bertalot & Archibald (in Krammer & Lange-Bertalot, Navicu-
laceae, p 97, 1985) recombine this taxon: Achnanthes subatomoides (Hustedt)
Lange-Bertalot & Archibald. The slide cited by them (Ma2/60) contains the
type material but no marked specimens. Their decision is correct, however,
as our micrographs demonstrate.
89-51 Navicula (bryophila var.?) suchlandtii Hustedt Plate 308/lO-U
Op 89, t 404/49-51.
Description included in plate explanation.
Holotype:
N6/86. Davos. Mittlerer Grialetschsee. Moos. 167.
Marked specimens named on the label.
Finder: 289-8; 371-7; 401.1.
N.B. In op 109, p 114, Hustedt renames this taxon: Navicula pseudo-
bryophila Hustedt, because of Navicula suchlandtii Hustedt 1934 (tx 84-36).
There he also presents a more exhaustive description.
89-52 Navicula perrostrata Hustedt Plate 308/25-27
Op 89, t 404/59-61.
Description in op 175, p 773, f 1746.
Only one marked specimen was found. On the index sheet the taxon's name
is given with interrogation mark, but this index sheet is written with
ballpoint pen and therefore after about 1950. This specimen is apparently
represented by Hustedt1s f 59 and 6l. Holotype:
N15/42. Rumanien. 2.
Finder: 371.1-

200
89-53 Navicula concamerata Hustedt Plate 309/1-7
Op 89, t 405/1-3.
Description in op 94, p 280, t 19/5-6, where this taxon was also declared
as "nov, spec." (tx 94-76).
Holotype:
N2/8. Sumatra, Musigebiet: Aer Djermih. M4ae.
Marked specimens named on the label.
Finder: 259-6-9; 349-4-7; 376.9; 431-3-
89-54 Navicula jugifera Hustedt Plate 308/28-32
Op 89, t 405/4-5.
Description included in plate explanation.
Holotype:
N17/27. Rumanien. 1.
Marked specimen named on index sheet.
Finder: 379-4.
N.B. Hustedt was not entirely certain about the nature of the
"longitudinal lines". These appear dark in high and bright in low focus. This
shows that they are solid ribs interrupting the striae, and they are
thicker than the general thickness of the interstriae.
89-55 Navicula viridula var. linearis Hustedt Plate 310/1-5
op 89, t 405/13-14.
Description in op 94, p 264, t 19/1-2, where this taxon was also declared
as "nov. var." (tx 94-61).
Holotype:
N8/99. Tobasee. TBlb. Sumatra.
Marked specimens named on the label.
Finder: 437-1 (i-type f 14); 552.5-8 (i-type f 13).
Paratype:
N3/28. Tobasee. Sumatra. TBlf.
Marked, unnamed specimen.
Finder: 467-3-
89-56 Navicula turris Hustedt Plate 311/1-6
op 89, t 405/15-18.
Validating description: Valvae lanceolatae marginibus convexis vel leviter
undulatis, apicibus cuneato-protractis, 29-46 um
longae, circiter 11-12 nm latae.
There are four slides with marked and named specimens. As lectotype is
here selected:
N17/27. Rumanien. 1.
Finder: 378.7 (i-type f 18); 646.1-2 (i-type f 16).
Isolectotypes:
N15/42. Rumanien. 2.
Finder: 437-4-5; 584-5-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
201
N17/29. Rumanien. 4. Nlo/87- Rumanien. Tertiar.
Finder: 377.1 (i-type f 15). Finder: 370.1-2.
89-57 Navicula globulifera var. robusta Hustedt Plate 309/8-14
op 89, t 405/20-22.
Description in op 94, p 266, t 19/3-4, where this taxon was also declared
as "nov. var." (tx 94-63).
The taxon is marked on two slides with names on the labels. As lectotype
is here taken:
'N3/31. Bach. Subang-Pafl. Sumatra. SKBlb.
'Finder: 225-9; 317-8-9; 490.8; 550.2-3; 583-9-
Isolectotype:
N3/30. Sumatra, Bach am Subangpaft. SKBlb,
Finder: 349-6; 467-7 (2 specimens).
89-58 Navicula grimmei var. rostellata Hustedt Plate 310/6-10
Op 89, t 405/30-34.
Description in op 94, p 236, t 17/13, where this taxon was also declared
as "nov. var." (tx 94-34).
The taxon occurs in masses, and therefore unmarked, on two slides which
bear its name on the labels. As lectotype is proposed:
N3/45. Sumatra. Warme Quelle v. Kadjaj. SKW2ba.
Isolectotype:
N3/46. Sumatra. Warme Quelle v. Kadjaj. SKW2ba.
89-59 Navicula mutica var. capitata Hustedt Plate 3H/7
Op 89, t 405/35-36.
Description in op 94, p 233, t 17/5, where this taxon was also declared
as "nov. var." (tx 94-31).
Only one marked, unnamed, specimen of this taxon was located which must
therefore be considered as the holotype:
N9/95- Java. R.Lamongan. Quelle-Austritt. Moos. KLQulca. 17.11.28.
Finder: 352-7 (i-type f 36).
N.B. Because of Navicula mutica var. capitata 0strup 1920, Hustedt
renamed this taxon in op 103, P 381: Nav. mutica var. distinguenda Hustedt.
In op 175, p 620, f I6l8, Hustedt synonymizes this taxon with and includes
it in Navicula nivalis Ehrenberg.
89-60 Navicula mutica var. gracilis Hustedt Plate 31l/13-l8
Op 89, t 405/37-38.
Description in op 94, P 233, t 17/4, where this taxon was also declared
as "nov. var." (tx 94-30).
There are three slides with marked specimens named on the labels. Two of
these are with material from the type locality, and the following may serve
as lectotype:

202
N5/89. Sumatra. Zufluli des Ranau-Sees. RE2a.
Finder: 256.4 (i-type f 38).
Isolectotype:
N.5/90. Sumatra. Zufluft des Ranau-Sees. RE2a.
Finder: 344.8 (i-type f 37).
Further slide (with material mentioned in op 94)*
Nll/32. Musi-Gebiet. Quelle. Sumatra. M3a.
Finder: 493.8; 494.9; 500.8-9; 502.7.
N.B. In op 175, p 592, f 1597, Hustedt raises this taxon to species
rank and renames it: Navicula obligata Hustedt.
89-61 Navicula mutica var. tropica Hustedt Plate 311/8-12
Op 89, t 405/39-42.
Description included in plate explanation. Description also in op 94, p
233, t 17/6, where this taxon was also declared as "nov. var." (tx 94-32).
Two slides have the taxon1 s name on their labels, both contain the same
material in which the unmarked taxon is very frequent. As lectotype is
here chosen:
N5/91. Java, R.Lamongan. Quelle 3* KLQu3a.
Isolectotype:
N9/96. Java, R.Lamongan. Quelle 3- KLQu3a.
N.B. In op 175, P 589, f 1594, Hustedt raises this taxon to specific
rank under the name Navicula terminata Hustedt.
Lange-Bertalot & Bonik (Botanica Marina 21, p 36, 1978) synonymize
this taxon with Navicula goeppertiana (Bleisch) Grunow.
89-62 Amphipleura campechiana Hustedt Plate 311/1-3
Op 89, t 406/4.
Validating description: Valvae lineares marginibus parallelis, apicibusque
rotundatis, non protractis, circiter 48 urn longae,
8 um latae,
Holotype:
Zt3/99- Campeche Bay. 63a.
Marked specimen named "Amphipleura" by name on the index sheet.
Finder: 379.7-
89-63 Frustulia splendida Hustedt Plate 311/9-12
op 89, t 406/5-6.
Description in op 94, p 2l6, t 16/4, where this taxon was also declared
as "nov. spec." (tx 94-16).
Holotype:
Nc/38. Sumatra. Bach Ajer Upi beim Ranau-See. RBlg.
Marked specimen named on label.
Finder: 434-1-4.
Two further, unmarked, specimens are here also illustrated.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweSrambler.
203
89-64 Frustulia veinholdii Hustedt Plate 311/4-8
op 89, t 406/7-8.
Description in op 95, p 731, f 1101.
The taxon's name appears on the labels of two slides which contain marked
specimens. The following shall be the lectotype:
Nc/44- Wallengriin, Sachsen. Waldgraben.
Finder: 468.2; 552.4 (i-type f 7)-
Isolectotype:
Nc/43- Wallengriin, Sachsen. Waldgraben.
1 Finder: 385.7 (i-type f 8).
l
89-65 Frustulia javanica Hustedt Plate 313/1-4
op 89, t 406/9-10.
Description in op 94, p 215, t 16/3, where this taxon was also declared
as "nov. spec." (tx 94-15)-
Holotype:
Nc/42. Sumatra, Bach am Subangpaft. SKBib.
The taxon is frequent, not marked, named on the label.
89-66 Frustulia submarina Hustedt Plate 314/1-3
op 89, t 406/11.
Description included in plate explanation. Description and discussion in
op 147, p 271.
Holotype:
Nc/56. Sgei Sangatta. Borneo. 3>
The taxon is abundant, not marked, named on the label.
89~67 Cocconeis brevicostata Hustedt Plate 315/1-12
Op 89, t 407/12-17.
Description in op 94, p 190, t 13/8-9, where this taxon was also declared
as "nov. spec." (tx 94-3)-
The taxon is nowhere marked or named. As lectotype is therefore selected:
147/68. Ranu Pakis. Java. Quelle. KPQ2a.
The taxon is abundant on this slide.
It is also frequent on the following slide with material cited in the
protologue:
M2/48. Java, Tjibeureum. Wasserfall. TJ2 Ill.b.
89-68 Cocconeis cataractarum Hustedt Plate 315/23-31
op 89, t 407/18-23.
Description in op 94, p 189, t 13/10-14, where this taxon was also declared
as "nov. spec." (tx 94-2).
Holotype:
M2/48, Java, Tjibeureum. Wasserfall. TJ2 Ill.b.
The taxon is very frequent, not marked, named on the label.

204
89-69 Cocconeis feuerbornii Hustedt Plate 315/32-37
Op 89, t 407/44-48.
Description in op 94, p 188, t 13/1-2, where this taxon was also declared
as "nov. spec." (tx 94-1).
Holotype:
M2/49- Buitenzorg, Java. Bot. Gart. B2fa.
Marked specimens named on the label.
Finder: 316.1-4; 349-4-7; 403-7; 525-5-6; 590.1.
89-70 Achnanthes holsatica Hustedt Plate 315/13-22
oP 89, t 407/67-72.
Description included in plate explanation. See also op 126, p 344-
The taxon is nowhere named, nor were marked specimens found. Therefore
the following slide is here designated as lectotype:
N15/73- Gr. Madebroken S. 5 1/2 m. Plon.
The taxon is by no means frequent, our specimens were found at finder
positions 258.7; 378.8; 408.5; 584-1-2; 588.2.
89-71 Achnanthes radiosa Hustedt Plate 316/14
Op 89, t 408/47-48.
Validating description: Valvae lanceolatae apicibus levissime protractis,
rotundatis, circiter 47 urn longae, 11.5 um latae,
striis raphovalvae valde radiantibus.
In spite of a long and thorough search we have been unable to locate any
marked or unmarked specimen of this taxon. We are therefore not in the
position to present a micrograph or any other further data.
89-72 Achnanthes dispar var. rumaniensis Hustedt Plate 316/1-13
op 89, t 408/55-60.
Validating diagnosis: Differt a typo raphovalva cum area axiali majore
striisque centralibus curtioribus.
So far three slides with marked specimens, all unnamed, could be located.
As lectotype is proposed:
N15/42. Rumanien. 2.
Finder: 492.7-8; 551.8.
Isolectotypes:
N17/27- Rumanien. 1. N17/29. Rumanien. 4«
Finder: 525-5- Finder: 437-7; 473-6.
Op. 90. SUfiwasser-Diatomeen von Island, Spitzbergen und den Faroer-Inseln.
Bot. Arch. 38, 152-207, 1937.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
205
90-1 Eunotia arctica Hustedt Plate 3l6/l5-19
Op 90, p 169, f 1-3.
Holotype:
Ll/5. Island, Allmannerschlucht. Moos. b.
Marked specimens named on the label.
Finder: 285-5-6; 313-3; 347.6-9; 372.2; 406.6.
90-2 Eunotia arctica var. simplex Hustedt Plate 316/20-21
Op 90, p 169, f 4-
Holotype:
Li/5* Island, Allmannerschlucht. Moos. b.
Marked specimen named on the label.
Finder: 256.2-3-
90-3 Eunotia rhynchocephala Hustedt Plate 317/1-5
Op 90, p 170, f 5-6.
As lectotype is here proposed:
209/H• Faroer-Ins. Moos. c.
Marked, unnamed specimens.
Finder:. 490.1-2; 498.2-3.
Paralectotype:
Ma2/84- Faroer-Ins. Moos. a.
Marked, unnamed specimen (probably accidentally marked with tx 90-6).
Finder: 252.1.
90-4 Eunotia rhynchocephala var. undulata Hustedt Plate 317/6-7
Op 90, p 170, f 7-9.
Since none of the two marked specimens is named, the following slide is
here designated as lectotype:
209/1. Faroer-Ins. Sphagnum.
Finder: 401.2-3-
Paralectotype:
209/11. Faroer-Ins. Moos. c.
Finder: 492.1-2.
90-5 Achnanthes petersenii Hustedt Plate 317/11-18
Op 90, p 179, f 10-14.
Holotype:
Ma2/6l. Spitzbergen, Gletscher-AbfluB. d.
The taxon is not marked, it occurs in masses; name on label.
90-6 Achnanthes sublaevis Hustedt Plate 317/19-26
Op 90, p 180, f 15-16.

206
Holotype:
Ma2/84- Faroer-Ins. Moos. a.
Marked specimens named on the label.
Finder: 225-7-8^ 250.3; 252.1; 308.1.
(90-7 Navicula petersenii Hustedt)
Op 90, p 197, f 17.
In op 89, t 402/1-7, Hustedt gives this taxon already the "nomen novum"
Navicula petersenii. We are, therefore, not dealing with a "nova species"
as stated by Hustedt, because the taxon is based on Gomphonema angustatum
forma curta J.B. Petersen.
90-8 Navicula petersenii forma gomphonemoides Hustedt Plate 317/27-33
Op 90, p 192 (no figure specified, but f 18-20 fit the description).
Holotype:
209/21. Island. Allmannerschlucht. Moos. a.
Marked, unnamed specimens.
Finder: 284.6; 340.2 (i-type f 18); 461.5-8 (i-type f 20 and another
specimen); 551.8 (i-type f 19); 553-5-8.
90-9 Nitzschia frustulum var. bryophila Hustedt Plate 317/8-10
Op 90, p 204, f 25-
In Lange-Bertalot & Simonsen (Bacillaria 1, p 21, 1978) I designated as
type slide no. 209/8 "Faroer-Ins. Moos, b." In the meantime we found the
marked, unnamed holotype:
209/II. Faroer-Ins. Moos. c.
Finder: 530.5-8.
There are more unmarked specimens on this slide.
N.B. In op 113, p 232, f 66-71, Hustedt raises this taxon to species
rank: Nitzschia bryophila Hustedt.
Op. 93. Systematische und okologische Untersuchungen iiber die Diatomeen-
flora von Java, Bali und Sumatra nach dem Material der Deutschen Limno-
logischen Sunda-Expedition. Teil I. Systematischer Teil. Arch. Hydrobiol.,
Suppl. 15, 131-177, 1937.
93-1 Melosira ruttneri Hustedt Plates 318/1-6, 319/1-3
Op 93. p 140, t 9/11-16.
There are three slides bearing the taxon's name on their labels, with
unmarked specimens, with material from three different localities. Of these
I designate as lectotype:
A2/l8. Java. R.Lamongan. Quelle, Austritt. KLQulaB. 17-H.28.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
207
The other slides:
A2/23. Sumatra. TBo.l.d. Balige. Bachtal.
An auxospore, marked at finder position 404-2.
A2/27. Tjibeureum. Wasserfall. Java. TJ2.III.C.
N.B. It is noteworthy that on slide A2/23 some, though not all, valves
appear to have varying numbers of marginal labiate processes.
93-2 Melosira cataractarum Hustedt Plate 320/1-9
op 93. p 142, t 9/6-7.
Holotype:
A2/27. Tjibeureum. Wasserfall. Java. TJ2.III.C
Marked, unnamed specimens.
Finder: 468.6; 495-4-7; 528.7 (2 specimens).
A few unmarked specimens are here included.
93-3 Cyclotella atomus Hustedt Plate 320/10-13
Op 93. P 143, t 9/1-4.
Holotype:
Acl/48. Java, Sindanglaja, Stausee, Pi.
The taxon is very frequent, not marked, named on the label.
93-4 Cyclotella stelligera var. tenuis Hustedt Plate 320/14-20
Op 93- P 143, t 9/5-
This taxon is nowhere marked or named. It is very frequent on the type
slide of the preceding taxon which is here chosen as lectotype:
Acl/48. Java, Sindanglaja, Stausee, PI.
93-5 Hydrosera triquetra var. hexagona Hustedt Plate 319/4
Op 93. P 147, t 9/10.
Holotype:
Gc/22. Sumatra. Musi-Gebiet, Wasserfall Kapala Tjurup.
Marked specimen named on the label.
Finder: 496-5*
93-6 Fragilaria fonticola Hustedt Plate 320/21-26
Op 93. P 151, t 10/61-62.
Hustedt did not mark or name specimens of this taxon which is abundant
in the sample no. 416 (= Mlda) quoted by him. Of the three slides made
of this sample I designate as lectotype:
156/1. Sumatra. Musigebiet. Wasserfall. Mlda.
Isolectotypes:
S2/94. Sumatra. Wasserfall im Quellgebiet des Musi. Mlda.
W3/39. Sumatra. Wasserfall im Quellgebiet des Musi. Mlda.

208
N.B. We observed one labiate process at each end, both on the same
side of the axial area.
93-7 Fragilaria fonticola var. angusta Hustedt Plate 320/27-30
Op 93- P 151, t 10/63-64.
Of the two samples cited by Hustedt, no. 222 (= TJ2Iae) contains the taxon
most abundantly. No marked or named specimens exist. Therefore the lecto-
type may be:
151/68. Java. TJ2IaB. Tjibeureum.Tjurug Tjikundul,
Isolectotypes:
151/69. Java. TJ2Ia8. Tjibeureum. Tjurug Tjikundul.
151/70. Java. TJ2Iap. Tjibeureum. Tjurug Tjikundul.
93-8 Fragilaria densestriata Hustedt Plates 320/31-38, 321/l-7
Op 93. P 153, t 10/65-67.
Holotype:
Ka/50. Java, Buitenzorg. Bot. Garten. B2dB.
Name on the label, there are no marked specimens of this very abundant
taxon.
N.B. Our SEM micrographs (from the type sample, no. As 502) show that
there is a considerable difference between Hustedt's illustrations and
the real morphology of the valves. The striation amounts to about 32 in
10 urn but can hardly be made out due to its marginal position. Note the
nose-like structures at the apices and their counterparts on the valve
inside which may be labiate processes or structures homologous to these.
93-8 Fragilaria javanica Hustedt Plate 322/1-6
Op 93. P 154, t 10/59-60.
Holotype:
Ka/48. Buitenzorg. Bot. Garten. Java. B2ca.
Marked specimens named on the label.
Finder: 374-6-9 (i-type f 59); 407-1-4.
Isotype:
Ka/49. Java, Buitenzorg. Bot. Garten. B2ca.
Unmarked specimens named on label.
Further slide:
Ka/52. Sumatra. FH2c. Harau-Kloof. Wasserfall.
Masses of this taxon, unmarked, named on the label.
93-10 Synedra ulna var. tenuirostris Hustedt Plate 322/7-10
Op 93- P 156, t 13/60.
The taxon is not marked or named on the pertaining slides. Therefore the
following is selected as lectotype:
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
209
149/50. Java. Telaga Pasir, 5.12.28. oben.
The taxon is not uncommon, though not frequent, on the slide.
Isolectotypes:
149/51. Java. Telaga Pasir. 5.12.28. oben.
149/52. Java. Telaga Pasir. 5.12.28. oben.
93-H Synedra ulna var. fonticola Hustedt Plate 323/I-6
Op 93. p 156, t 10/37-39.
The taxon's name appears on the labels of three slides with material from
as many localities. All contain marked specimens. As lectotype I designate:
K2/28. Sumatra. Bach bei Balige, Tobasee. TBo2g.
Finder: 255-2-5; 260.8 (i-type f 38); 527-1-4-
Paralectotype:
Pl/35. Sumatra. Tbolg. Balige, Bachtal.
Finder: 523-6.
Further specimen:
K2/11. Java, R.Bedali. Wasserfall. KBld.
Finder: 319-6-9 (i-type f 37).
93-12 Synedra ulna,var. claviceps Hustedt Plate 324/I-6
Op 93. p 157, t 10/36.
The taxon's name appears on the labels of two slides, of which one contains
marked specimens. This latter is here designated as lectotype:
K2/27. Sumatra. Tobasee. 15a. 77 m. Mitte. a.
Finder: 377-7-8; 465.6.
Paralectotype:
K2/22. Sumatra. Tobasee. Sudbecken. TSlh.
93-13 Synedra rumpens var. fragilarioides forma constricta Hustedt
Plate 323/7-8
op 93. p 159, t 10/51-52.
Of the three samples stated by Hustedt to contain this taxon I have
selected the one in which it occurs most frequently. Hustedt did not care
to mark or name any slide. As lectotype is therefore determined:
148/97. Java. KK1. Ranu Klindungan. Najas.
Isolectotype:
148/98. Java. KK1. R. Klindungan. Najas.
93-14 Eunotia exigua var. gibba Hustedt Plate 323/13-14
Op 93. p 166, t 10/13-18.
We found only two marked specimens of this taxon, both unnamed. Lectotype:
157/72. Sumatra, SKBlc. Subangpafl. Bach.
Finder: 647-2-5-

210
Paralectotype:
393/78. Bach, Subang-Pafi. Sumatra. SKBla.
Finder: 585-9.
93-15 Eunotia fallax var. aequalis Hustedt Plate 323/15-18
Op 93. P 167, t 10/30-31.
Hustedt neither marked nor named this taxon on his slides. The slide cited
below bears the species name on its label. Our taxon is rather frequent
in the material. Lectotype:
Ll/84. Harau-Kloof. Wasserfall, Sumatra. FHlda.
93-16 Eunotia thienemannii Hustedt Plate 323/9-12
Op 93- P 169, t 12/9-12.
Holotype:
L3/85- Harau-Kloof, Sumatra. FH2a. Kl.Wasserfall.
Several specimens in same circle named on the label.
Finder: 469.6.
Op. 94- Systematische und okologische Untersuchungen iiber die Diatomeen-
flora von Java, Bali und Sumatra nach dent Material der Deutschen Limno-
logischen Sunda-Expedition. Teil I. Systematischer Teil, Fortsetzung.
Arch. Hydrobiol., Suppl. 15, 187-295, 1937-
(94-1 Cocconeis feuerbornii Hustedt)
Op 94, p 188, t 13/1-2.
This taxon was originally published - without description - in op 89,
t 407/44-48. See tx 89-69.
(94-2 Cocconeis cataractarum Hustedt)
Op 94, p 189, t 13/10-14.
This taxon was originally published - without description - in op 89,
t 407/l8~23. See tx 89-68.
(94-3 Cocconeis brevicostata Hustedt)
Op 94, p 190, t 13/8-9.
This taxon was originally published - without description - in op 89,
t 407/12-17. See tx 89-67.
94-4 Achnanthes minutissima var. robusta Hustedt Plate 325/1-12
Op 94, P 192, t 13/41-46.
There are two slides with material from different localities bearing the
taxon's name on their labels. No specimen is marked. As lectotype is here
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
211
designated:
Ma2/47- Sumatra, Wasserfall am oberen Musi. Mlaa.
The other slide:
Ma2/48. Java, Wasserfall b. Tjibeureum. TJ2IIIb.
N.B. Lange-Bertalot & Ruppel (Arch. Hydrobiol., Suppl. 60, p 18, 198O)
synonymize this taxon with Achnanthes minutissima var. jackii (Rabenhorst)
Lange-Bertalot & Ruppel.
94-5 Achnanthes minutissima var. macrocephala Hustedt Plate 325/13-22
Op 94, P 193, t 13/50-53.
Holotype:
Ma2/46. Sumatra. Tobasee. TBlc.
The taxon is frequent, not marked but named on the label.
94-6 Achnanthes crassa Hustedt Plate 325/23-31
Op 94, P 194, t 13/37-40.
There are two slides with marked specimens named on their labels. Of these
I select as lectotype:
Mal/42. Bach am Subangpaft. Sumatra. SKB2c.
Finder: 344-5; 346.4-7; 346.8; 374-3; 434-7.
The other slide:
Mal/43- Buitenzorg. Bot. Garten. Java. Blea.
Finder: 373-4; 494-3; 498-7; 526.5.
94-7 Achnanthes atomus Hustedt Plate 325/32-38
Op 94, P 194, t 13/33-36.
As lectotype is here chosen:
Mal/7. Java, Tjibeureum, Wasserfall. TJ2IIIdB.
Marked specimens (generally several in a circle) named on the label.
Finder: 439-4; 441-5; 443-6; 466.2-5-
The other slides:
N5/59- Sumatra. SKB2c. Bach am Subangpafl.
Marked specimens named on the label.
Finder: 496.1; 586.7.
Mal/6. Sumatra. Ranausee. RE'4.
No marked specimens, name on the label.
N.B. Lange-Bertalot & Ruppel (Arch. Hydrobiol., Suppl. 60, p 20, 1980)
synonymize this taxon with Achnanthes minutissima var. jackii (Rabenhorst)
Lange-Bertalot & Ruppel.
94-8 Achnanthes tenuissijna Hustedt Plate 325/41-49
Op 94, p 196, t 13/26-27.
Three slides with material from different localities bear the taxon's name
on their labels. As lectotype is therefore designated:

212
Ma2/89- Sumatra. Ajer Upi a. Ranausee. RBlh.
Marked specimens (generally several in a circle).
Finder: 343-6; 493-8-9; 523-4-5; 583-3-
The other slides:
Ma2/90. Tel Pasir. Quelle. Java. SQlb.
Marked specimens.
Finder: 466-9; 500.8; 526.1; 615.2-3; 620.5; 646.2; 649-6-9-
Ma2/91. Java, R.Lamongan. Quelle 1. KLQulap.
No specimens are marked on this slide.
N.B, VanLandingham (Catalogue 1, p 67, 1967) renames this taxon because
of Achnanthes tenuissima Pantocsek 1905: Achn. biconfusa VanLandingham.
Our micrographs show that both valves have comparatively wide,
lanceolate axial areas, that of the rapheless valve being wider. In
addition, the axial area of the rapheless valve is irregularly spotted, quite
similar to that of Achn. maculata Hustedt (tx 94-10, below), which is
perhaps a close relative.
94-9 Achnanthes exigua var. elliptica Hustedt Plate 326/1-10
Op 94, P 197, t 9/8-9-
This taxon is nowhere marked or named. As lectotype is therefore chosen:
155/77- Sumatra. Wai Panas. Heifte Quelle. RWlb.
The taxon is not uncommon on this slide.
94-10 Achnanthes maculata Hustedt Plate 326/11-19
Op 94, p 199, t 13/17-19-
Holotype:
Ma2/28. Sumatra. FHlda. Harau-Kloof, Wasserfall.
Marked specimens named on the label.
Finder: 342.2-3; 343-8; 350.3; 379.8.
94-11 Achnanthes tropica Hustedt
Op 94, p 200, t 13/28-32.
Of the two slides bearing the taxon's name on their labels
on both and not marked - I select as lectotype:
M&2/95. Java. Sindanglaja. QuelltUmpel. B7bp.
Paralectotype:
Mal/88. Java. Stausee. Sindanglaja. B7ba.
94-1la Achnanthes lanceolata var. robusta Hustedt Plate 326/29-35
Op 94, p 202, t 13/47-49.
Of the two slides bearing the taxon's name on their labels - no specimen
is marked - the following may be the lectotype:
Ma2/9. Tjibeureum. Wasserfall. Java. TJ2IIIc.
Plate 326/20-28
- it is frequent
SCANNED fcdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
213
Paralectotype:
Ma2/48. Java, Wasserfall b. Tjibeureum. TJ2IIIb.
94-12 Achnanthes crenulata var. constricta Hustedt Plate 325/39-40
Op 94, p 207, t 14/9-
Holotype:
Ma4/27. Tjiwalen. Tjibodas, Java. TJ3f-
Marked, unnamed specimen (raphe valve).
Finder: 528.2-3 (the i-type).
* Isotype:
152/38. Java. TJ3f. Tjiwalen.
Marked, unnamed specimen (rapheless valve).
Finder: 500.9-
94-13 Diploneis pulcherrima Hustedt Plate 327/1-3
Op 94, P 210, t 15/1-
The taxon is named on the labels of four slides. Of these I choose as
lectotype:
O4/64. Tjibeureum. Wasserfall. Java. TJ2IIIc.
The taxon is fairly abundant, not marked.
Paralectotype:
04/65- Java, Wasserfall Tjibeureum. TJ2IIaa.
The taxon is frequent and not marked.
Further slides:
05/38. Quelle bei Telaga Pasir. Java. SQula.
Marked specimen.
Finder: 439-8-9-
X4/39. Seraju-Quelle. Java. D6da.
Marked specimen.
Finder: 433-6.
94-14 Frustulia rhomboides var. elliptica Hustedt Plate 328/1-3
Op 94, p 214, t 16/2.
There is a marked, unnamed specimen on the slide quoted below as holotype.
However, this specimen is not the i-type and its position is rather
oblique so that it cannot be photographed very well. Two other, unmarked,
specimens from the same slide are shown instead.
Holotype:
P3/74. Buitenzorg. Bot. Garten. Java. B2ca.
Finder position of the marked specimen: 527-3-6.
Finder position of the unmarked specimens: 4H-7 and 585.3-

214
(94-15 Frustulia javanica Hustedt)
Op 94, p 215, t 16/3.
This taxon was originally published - without description - in op 89,
t 406/9-10. See tx 89-65.
(94-16 Frustulia splendida Hustedt)
Op 94, P 216, t 16/4-
This taxon was originally published - without description - in op 89,
t 406/5-6. See tx 89-63.
94-17 Frustulia vulgaris var. elliptica Hustedt Plate 328/4-5
Op 94, p 217, t 16/5.
No marked or named specimens seem to exist. Therefore the following is
determined as lectotype:
153/92. Bali. BBlb. Quellbach des Padangombo.
Finder position of the unmarked specimen: 376.1.
Isolectotype:
153/93. Bali. BBlb. Quellbach des Padangombo.
Finder position of the unmarked specimen: 344-5*
94-18 Frustulia rostrata Hustedt Plate 328/6-7
Op 94, p 217, t 16/6.
Holotype:
Nc/49- Harau-Kloof. Sumatra. FHlbB. Gr. Wasserfall.
Marked specimen named on the label.
Finder: 471-7-8.
94-19 Anomoeoneis serians var. acuta Hustedt Plate 326/36-38
Op 94, p 218, t 15/23-24.
The taxon's name appears on the label of three slides, all with unmarked
specimen. As lectotype is chosen:
Nd/76. Sumatra. TH3b. Heide a. Tobasee.
Paralectotypes:
Nd/77- Sumatra. Toba-Heide. THle.
Nd/78. Sumatra. Toba-Heide. TH6b.
94-20 Stauroneis nodulosa Hustedt Plate 328/8-11
Op 94, p 222, t 15/5.
Holotype:
394/91. Tobasee. Sumatra. TSlf.
Marked, unnamed specimens.
Finder: 309.2-5; 312.4; 343-4-7; 374-4-7; 400.7.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
215
94-21 Stauroneis densestriata Hustedt Plate 328/15-16
Op 94, P 223, t 15/2.
Holotype:
Nal/35. Java. Telaga Pasir, Abflufi. SP5ba.
Marked specimen named on the label.
Finder: 404-3-
N.B. Hustedt states to have counted 40 transapical striae in 10 urn.
This cannot be confirmed, our count amounted to about 32 striae in 10 pm
only. The striae are very delicate.
94-22 Stauroneis fonticola Hustedt Plate 328/13-14
Op 94, P 223, t 15/6-7.
Holotype:
Nal/38. Java, Tengger. Quelle 1. TGla.
Marked specimens named on the label.
Finder: 380.9; 590-4-5.
94-23 Stauroneis tenuissima Hustedt Plate 328/12
Op 94, p 224, t 15/3.
We regret to have to announce that our efforts to locate this taxon were
unsuccessful until now. We are therefore obliged to include a copy of
Hustedt's illustration instead of a micrograph.
94-24 Stauroneis minutula Hustedt Plate 329/1-3
Op 94, p 224, t 16/15-16.
Holotype:
Nal/74- Java, R.Lamongan. Quelle 3- KLQu3b.
Marked specimens named on the label.
Finder: 284.9 (i-type f 15); 443-9 (i-type f 16).
94-25 Stauroneis minutula var. linearis Hustedt Plate 329/4-5
Op 94, p 224, t 16/17-18.
Holotype:
Na2/9. Java, R.Lamongan. Quelle-Austritt. Moos. KLQlcB. 17-11-28.
Marked specimen named on the label.
Further slide:
W4/23. Quellen Bukit Kili. Sumatra. SKW2bp.
Marked, unnamed specimen.
Finder: 344-1-4.
94-26 Stauroneis tenera Hustedt Plate 329/6-10
Op 94, p 225, t 16/19-21.

216
Of the three slides labelled with the taxon's name, all containing marked
specimens, the following is designated as lectotype:
Na2/7. Buitenzorg. Bot. Garten. B2b.
Finder: 529-3 (i-type f 19).
Further slides:
Na2/8. Java, R.Lamongan, an Felsblock. KLQulcy. 17.11.28.
Finder: 375-7-8 (i-type f 20).
Na2/9. Java, R.Lamongan. Quelle-Austritt. Moos. KLQulcB. 17.11.28.
Finder: 313-4 (i-type f 21); 343-6.
94-27 Stauroneis distinguenda Hustedt Plate 329/11-12
Op 94, p 226, t 16/14-
Holotype:
155/63- Sumatra. Ajer Upi. RBlfB.
Marked, unnamed specimen.
Finder: 586.3.
94-28 Navicula subhalophila Hustedt Plate 329/13-15
Op 94, p 229, t 17/1-
Holotype:
N3/28. Tobasee. Sumatra. TBlf.
Marked, unnamed specimen.
Finder: 582.1-2.
94-29 Navicula vixvisibilis Hustedt Plate 329/16-17
Op 94, p 230, t 17/2.
Holotype:
N9/1. Java. Tjigombong. NP1. 1 m. 24.5-29-
Marked specimen named on the label.
Finder: 501.1.
N.B. Hustedt's count of the transapical striae ("about 36 in 10 u")
is incorrect. The striae themselves are fairly broad but at the same time
very delicate. We counted 20-21 striae in 10 u.m. The delicate appearance
of the striation is probably due to its shallow sculpture. Conspecific
with this taxon is tx 108-17 Navicula halophila forma tenuirostris Hustedt
(op 108, p 52, f 76), see the discussion there. The position of that
specimen is much more favourable for photography.
(94-30 Navicula mutica var. gracilis Hustedt)
Op 94, p 233, t 17/4.
This taxon was originally published - without description - in op 89,
t 405/37-38. See tx 89-60.
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweS:
217
(94-31 Navicula mutica var. capitata Hustedt)
Op 94, p 233, t 17/5-
This taxon was originally published - without description ~ in op 89,
t 405/35-36. See tx 89-59.
(94-32 Navicula mutica var. tropica Hustedt)
Op 94, p 233, t 17/6.
This taxon was originally - with description - published in op 89,
It 405/39-42. See tx 89-61.
(94-33 Navicula thienemannii Hustedt)
Op 94, p 235, t 17/16-17.
This taxon was originally published - without description - in op 89,
t 402/53-56. See tx 89-25.
(94-34 Navicula grimmei var. rostellata Hustedt)
Op 94, P 236, t 17/13.
This taxon was originally published - without description - in op 89,
t 405/30-34. See tx 89-58.
(94-35 Navicula ruttneri Hustedt)
Op 94, p 238, t 17/18-23.
This taxon was originally - with description - published in op 89,
t 402/30-38, 49-52. See tx 89-22.
(94-36 Navicula ruttneri var. capitata Hustedt)
Op 94, p 238, t 17/24-26.
This taxon was originally published - without description - in op 89,
t 402/47-48. See tx 89-24.
(94-37 Navicula ruttneri var. rostrata Hustedt)
Op 94, p 238, t 17/27-28.
This taxon was originally published - without description - in op 89,
t 402/39-46. See tx 89-23.
(94-38 Navicula seminuloides Hustedt)
Op 94, p 239, t 17/29-31.
This taxon was originally published - without description - in op 89,
t 401/68-71. See tx 89-9-

218
(94-39 Navicula seminuloides var. sumatrensis Hustedt)
Op 94, p 239, t 17/32-33- The spelling was erroneously "sumatrensis"
instead of the original "sumatrana", see below.
This taxon was originally published - without description - in op 89,
t 401/72-76. See tx 89-10.
(94-40 Navicula spirata Hustedt)
Op 94, p 240, t 17/34-35.
This taxon was originally published - without description - in op 89,
t 401/114-115. See tx 89-19.
(94-41 Navicula perventralis Hustedt)
Op 94, p 241, t 17/49-50.
This taxon was originally published - without description - in op 89,
t 401/3-5. See tx 89-1.
(94-42 Navicula rupicola Hustedt)
Op 94, p 242, t 17/45-48.
This taxon was originally -published - without description - in op 89,
t 401/103-105. See tx 89-18.
(94-43 Navicula brekkaensis var. bigibba Hustedt)
Op 94, p 243, t 18/28.
This taxon was originally published - without description - in op 89,
t 402/28. See tx 89-21.
(94-44 Navicula bella Hustedt)
Op 94, P 245, t 17/37.
This taxon was originally published - without description - in op 89,
t 401/84. See tx 89-13.
(94-45 Navicula pseudomuralis Hustedt)
Op 94, p 245, t 19/25-27.
This taxon was originally published - without description - in op 89,
t 401/64-67. See tx 89-8.
(94-46 Navicula agrestis Hustedt)
Op 94, p 246, t 20/21-22.
This taxon was originally published - without description - in op 89,
t 401/27-29. See tx 89-4.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
219
94-47 Navicula perparva Hustedt Plate 329/18-24
Op 94, p 246, t 20/l6-l8.
Of the four slides containing marked specimens and carrying the taxon's
name on their labels I select as lectotype:
N6/35. Sumatra. Manindjau-See. FM2d.
Finder: 488.9; 494-9-
Isolectotype:
N6/34. Manindj au-See. Sumatra. FM2d.
Finder: 552.4-7; 554-1-
Further slides:
N6/36. Sumatra. Singkarak-See. Abfluft. SKA.
Finder: 462.5-8; 471.4-
V/22. Danau di Atas. Sumatra. A!ay.
Finder: 436.2.
(94-48 Navicula nympharum Hustedt)
Op 94, p 247, t 18/32-33-
This taxon was originally published - without description - in op 89,
t 401/85-87. See tx 89-14.
(94-49 Navicula tenerrima Hustedt)
Op 94, p 247, t 18/30-31.
This taxon was originally published - without description - in op 89,
t 401/81-83. See tx 89-12.
(94-50 Navicula arvensis Hustedt)
Op 94, p 249, t 20/19-20.
This taxon was originally published - without description - in op 89,
t 401/22-26. See tx 89-3.
(94-51 Navicula perlucida Hustedt)
Op 94, P 248, t 17/43-44.
This taxon was originally published - without description - in op 89,
t 401/93-93. See tx 89-17.
(94-52 Navicula subsulcata Hustedt)
Op 94, p 251, t 18/7.
This taxon was originally published - without description - in op 89,
t 402/59-60. See tx 89-27.

220
(94-53 Navicula marginestriata Hustedt)
Op 94, P 252, t 20/26.
This taxon was originally published - without description - in op 89,
t 401/34-36. See tx 89-5-
(94-54 Navicula gibbosa Hustedt)
Op 94, p 253, t 18/10.
This taxon was originally published - without description - in op 89,
t 402/57-58. See tx 89-26.
(94-55 Navicula margaritacea Hustedt)
Op 94, p 253, t 17/38-39.
This taxon was originally published - without description - in op 89,
t 402/61-62. See tx 89-28.
(94-56 Navicula invicta Hustedt)
Op 94, p 254, t 17/42.
This taxon was originally published - without description - in op 89,
t 402/63. See tx 89-29. -
94-57 Navicula subbacillura Hustedt Plate 329/28-32.
Op 94, p 256, t 18/3-6.
Two slides have the taxon's name on their labels. Of these the following
is here selected as lectotype:
N12/22. Sumatra, Wasserfall v. Panjingahan. SKB3aa.
The species occurs in masses and is not marked.
The other slide:
N8/14. Singkarak-See. Sumatra. SK2b.
Marked specimen.
Finder: 378.1-4-
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 96, 1985) include this
taxon in Navicula stroemii Hustedt. See tx 75—3-
94-58 Navicula incognita var. capitata Hustedt Plate 330/1-2
Op 94, p 259, t 18/13-14 (not t 20 as stated in the text).
As lectotype is here designated:
N7/4- Java, Ranu Pakis, Quelle 2. KPQu2b. 30.10.29.
Marked specimens named on the label.
Finder: 406.8-9; 589.2 (i-type f 14).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
221
Isolectotype:
N7/5. Java, Ranu Pakis, Quelle 2. KPqu2b. 30.10.29-
Marked specimens named on the label.
Finder: 379.1; 432.5 (i-type f 13).
N.B. Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 90,
1985) recombines this taxon: Navicula pusilla var. capitata (Hustedt)
Lange-Bertalot. I have grave doubts that this combination is justified.
(94-59 Navicula cryptocephaloides Hustedt)
pp 94, p 261, t 18/1-2.
This taxon was originally published - without description - in op 89,
t 403/56-59. See tx 89-46.
(94-60 Navicula adnata Hustedt)
Op 94, p 264, t 19/16-17.
This taxon was originally published - without description - in op 89,
t 401/37-40. See tx 89-6.
(94-61 Navicula viridula var. linearis Hustedt)
Op 94, p 264, t 19/1-2.
This taxon was originally published - without description - in op 89,
t 405/t3-U. See tx 89-55.
(94-62 Navicula cinctaeformis Hustedt)
0P 94, p 265, t 19/11-12.
This taxon was originally published - without description - in op 89,
t 403/29-31. See tx 89-41a.
(94-63 Navicula globulifera var. robusta Hustedt)
Op 94, P 266, t 19/3-4.
This taxon was originally published - without description - in op 89,
t 405/20-22. See tx 89-57.
94-64 Navicula tenelloides Hustedt Plate 329/27
Op 94, p 269, t 19/13.
Holotype:
N8/46. Java, Ranu Lamongan. Quelle 2, Moos. KLQu2ot. 19.11.28.
Marked specimen named on the label.
Finder: 430.9-

222
94-65 Navicula tenellaeformis Hustedt Plate 330/3-9
Op 94, p 269, t 19/14-15.
This species is nowhere named or marked on the relevant slides. A survey
of these did not result in a definite evidence of what Hustedt considered
as this taxon. There remains a slight suspicion, though, that the valves
illustrated by Hustedt belong to an Achnanthes species which occurs on
the relevant slides with material from both Ngadisari and Telaga Pasir.
It would be vain to designate a type in the present situation. Nevertheless
I present here a few micrographs of valves that could be connected with
Hustedt's taxon. These micrographs are from the following slide:
149/36. Java. TG2d. Ngadisari. Quelle.
(94-66 Navicula feuerbornii Hustedt)
Op 94, P 269, t 19/9-10.
This taxon was originally published - without description - in op 89,
t 403/21-24. See tx 89-39.
(94-67 Navicula kuripanensis Hustedt)
Op 94, P 270, t 20/23-24.
This taxon was originally published - without description - in op 89,
t 403/38-42. See tx 89-43.
94-68 Navicula menisculus var. obtusa Hustedt Plate 329/25-26
Op 94, p 271, t 20/12-14.
Holotype:
N5/70. Panjingahan. Wasserfall. SKB3b<5. Sumatra.
Marked specimens named on the label.
Finder: 318.9; 345-6-9; 346.1.
(94-69 Navicula gradata Hustedt)
Op 94, P 271, t 19/8.
This taxon was originally published - without description - in op 89,
t 402/67-68. See tx 89-31.
(94-70 Navicula curta Hustedt)
Op 94, p 272, t 20/1-3.
This taxon was originally published - without description - in op 89,
t 401/44-49. See tx 89-7a.
(94-71 Navicula vasta Hustedt)
Op 94, p 273, t 19/19-21.
This taxon was originally published - without description - in op 39,
t 401/77-80. See tx 89-11.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
223
(94-72 Navicula brevissima Hustedt)
Op 94, P 273, t 19/22-24.
This taxon was originally published - without description - in op 89,
t 401/41-43. See tx 89-7.
94-73 Navicula similis var. strigosa Hustedt Plate 330/19-23
Op 94, P 274, t 19/18.
Holotype:
J 153/9. Java. B2b. Buitenzorg. Quelle.
Marked, unnamed specimens.
Finder: 227-8; 257-7; 344-1-4.
N.B. The three specimens that we suppose to represent Hustedt's taxon
have all a single, very unobtrusive central stigma very near the central
nodule. In addition, the valves are not nearly as linear as depicted by
Hustedt so that there remains some doubt that our specimens are really
Hustedt's variety.
In op 117, p 927, Hustedt records this taxon from the Balcan. On
t 41/24 of that paper he depicts a specimen which is very similar to our
specimens and there he also draws the stigma, without mentioning it in
the text, however.
(94-74 Navicula plana Hustedt)
Op 94, P 275, t 19/7-
This taxon was originally published - without description - in op 89,
t 402/69-70. See tx 89-32.
(94-75 Navicula obscura Hustedt)
Op 94, p 278, t 20/15.
This taxon was originally published - without description - in op 89,
t 403/25-26. See tx 89-40.
(94-76 Navicula concamerata Hustedt)
Op 94, p 280, t 19/5-6.
This taxon was originally published - without description - in op 89,
t 405/1-3. See tx 89-53.
94-77 Caloneis amphicephala Hustedt Plate 330/16-18
Op 94, P 281, t 15/11.
Of the two slides with the species name on their labels, both containing
marked specimens, I select as lectotype:
Nbl/94. Buitenzorg. Bot. Garten. Java. B2a.
Finder: 497-6 (i-type).

224
Isolectotype:
Nbl/41. Java. Buitenzorg. Bot. Garten. B2a.
Finder: 406.I.
N.B. The axial area in this species and its following variety differs
considerably from Hustedt's illustration in that it is wider, rather
narrowly lanceolate, and the striae terminate irregularly so that an
undulating irregular border towards the axial area is the result.
94-78 Caloneis amphicephala var. rostrata Hustedt Plate 330/24-27
Op 94, p 281, t 15/12-13.
Holotype:
Nbl/89. Sumatra. Tobasee. TSlb.
Marked specimen named on the label.
Finder: 342.2-3 (i-type f 13)-
Paratype:
V8/89- Tobasee. Sumatra. TSld.
Marked, unnamed specimen.
Finder: 528.8 (i-type f 12).
N.B. The axial area is much wider than illustrated by Hustedt and is
lanceolate.
94-79 Caloneis hyalina Hustedt Plate 330/10-15
Op 94, p 281, t 15/8-10.
There are two slides with the species name on their labels of which I
determine as lectotype:
Nbl/93. Java. Ajer Panas. TJ7i.
The taxon is very frequent, not marked.
The other slide:
N8/47- Java. Tengger. Quelle 1. TGla.
Marked specimen.
Finder: 348.4-5-
94-80 Caloneis siiicula forma minutissjuna Hustedt Plate 330/28-29
Op 94, p 284, t 15/20-21.
Holotype:
157/88. Sumatra. SKB2d. Subangpaii. Bach.
Marked, unnamed specimen.
Finder: 439-9 (the i-type of which Hustedt illustrated both valves).
94-81 Pinnularia subcapitata forma constricta Hustedt Plate 330/30-31
0p 94, p 288 (no illustration).
This taxon was nowhere marked or named by Hustedt. The survey of a slide
with material from the hot springs of Ajer Panas (no. 264) was
unsuccessful. However, the slides with the sample from Telaga Pengilon quoted first
SCANNED fcdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
225
by Hustedt contain a few specimens each. As lectotype is determined:
151/H. Java. D3b. Dieng Plateau. Tel. Pengilon.
Isolectotypes:
I5l/l2. Java. D3b. Dieng Plateau. Tel. Pengilon.
393/7. Telaga Pengilan. Java. D3b.
Op- 95- Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 2, Lief. 5, 577-736, 1937.
95-1 Diploneis incurvata forma stricta Hustedt Plate 331/1-2
Op 95, P 594, f 1012e.
We found only one marked - unnamed - specimen of this taxon which thus
constitutes the type:
200/7. Norwegen. 16. Skjoldafjord, A. 100 m. oben. 1.
Finder: 438.3-6 (i-type?).
95-2 Diploneis incurvata var. dubia Hustedt Plate 331/3-4
Op 95, P 594, f 1012f-g.
Only one marked, unnamed, specimen could be found. Holotype:
200/7. Norwegen. 16. Skjoldafjord, A. 100 m. oben. 1.
Finder: 648.6 (i-type f 1012f).
95-3 Diploneis stroemii Hustedt Plate 331/5-S
Op 95, p 608, f 1022.
There are two slides with marked specimens bearing the taxon;s name on
their labels. Of these I select as lectotype (because this is the gu: \
exact locality cited in the protologue):
04/38. Firth of Tay. Budden Sand.
Finder: 319-6-9; 349-7-8; 407.4-5; 435-2-3; 436.3; 497-5-6 (2 specimens;
The second slide:
04/87. Bolstadfjord. 137 m. D. Norwegen.
Finder: 348.2,
The specimen illustrated is on slide:
199/98. Nordasot. 87 m. A. Norwegen. 8. (Nordasot =■ misread Nordasvax■-.'
Marked specimen named "Diploneis" on the index sheet.
Finder: 460-3-6.
95-4 Diploneis suborbicularis var. constricta Hustedt Plate 331/9-10
Op 95, p 613, f 1026c.

226
Holotype:
02/97- Adria.
A single mount with the taxon's name on the label.
95-5 Diploneis crabro var. excavata Hustedt Plate 332/1-2
Op 95, P 620, f 1030.
Holotype:
01/47. Sa. Monica.
A single mount named "Diploneis crabro E. Var." on the label.
95-6 Diploneis subadvena Hustedt Plate 332/3-6
Op 95, p 633, f 1042.
Holotype:
N17/10. Neapel. III. 1.
Marked specimens named "Dipl." on index sheet.
Finder:' 435-4-5; 494-3-
95-7 Diploneis sejuncta forma constricta Hustedt Plate 332/7-8
Op 95, p 638, f 1045b.
As lectotype is here designated:
N18/88. Balearen. 1. 1.
Marked specimen named "Diploneis sejuncta" on index sheet.
Finder: 437.4-7.
95-8 Diploneis fusca var. amphigomphus Hustedt Plate 333/1
Op 95, p 657, f 1058.
Holotype:
04/43- Neapel. 75 m.
Marked specimen named on the .label.
Finder: 499.6-9.
95-9 Diploneis petersenii Hustedt Plate 332/9-16
Op 95, p 676, f I068f-h.
Holotype:
04/60. Island (Pet. 25). Eyvindara. Moos.
Marked specimens named on the label.
Finder: 348-4; 372.8 (i-type f 1068f); 405-7; 410-4-5; 497-6.
95-10 Diploneis papula var. constricta Hustedt Plate 33l/ll-12
Op 95, p 680, f 107ld.
As lectotype is selected:
04/19. Berlin. Aquarium 200I. Museum.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe*':
227
No marked specimens of this taxon exist, but there are several appreciably
constricted valves on this slide which otherwise bears the specific name
on its label and is also cited in the protologue.
Finder position of some unmarked specimens: 342.7; 463-1-
95-H Diploneis oestrupii Hustedt Plate 333/4-6
Op 95, P 694, f 1079-
Holotype:
04/32. Kap Wankarema.
Marked specimens named on the label.
Finder: 342.8 (i-type f 1079 left); 558.6 ( 2 specimens, one of them is
i-type f 1079 right); 582.7-8.
95-12 Diploneis pseudobombiformis Hustedt Plate 333/2-3
Op 95, p 708, f 1087-
Holotype:
03/3- Mejillones.
Single mount named "Diploneis bombiformis CL." on the label which is
crossed out and corrected "pseudobombiformis Hust."
Op. 96. A. Schmidts Atlas der Diatomaceenkunde, Heft 103, t 409-412, 1937-
96-1 Achnanthes kryophila var. protracta Hustedt Plate 334/1-4
Op 96, t 409/18-19.
Validating diagnosis: Differt a typo apicibus protractis.
Holotype:
Ma3/82. Finnland, See am O-Fufl des Wuokatti.
Marked specimen named "Achnanthes" on the label.
Finder: 439-4-
N.B. There is a pencil note in Hustedt's hand on the plate legend:
"mit 74-82 zu verbindenl" Figures 74-82 on that plate represent Achnanthes
sublaevis Hustedt.
96-2 Achnanthes frigida Hustedt Plate 334/3-15
Op 96, t 409/30-33-
Validating description: Valvae late ellipticae apicibus rotundatis, non
protractis, circiter 13-17 P& longae, 6.5-7-5 ^
latae. Areovalvis area axialis rhombica, lata,
haec area in raphovalva minor angustiorque.
Holotype:
Mal/70. Norwegen. Geilo. 4A.
Marked specimens named on the label.
Finder: 345-6; 345-8-9; 348.8; 374-3; 375-5; 398-3; 431-2; 432.2-3-

228
96-3 Achnanthes recurvata Hustedt Plate 334/16-25
Op 96, t 409/34-37-
Description included in plate explanation. See also op 126, p 434-
The taxon is nowhere named. It was acidentally, with another taxon, marked
on a slide on which it occurs fairly frequently and which is consequently
chosen as lectotype:
Mal/51. Norwegen. Geilo. 4*A.
Finder: 436.2 (a frustule and a rapheless valve).
N.B. Ross & Sims (Bacillaria 1, p 153, 1978) synonymise this taxon
with Achnanthes altaica (Poretsky) A, Cleve-Euler.
96-4 Achnanthes krejcii Hustedt Plate 334/26-34
Op 96, t 409/44-51.
Description in op 126, p 345 (under Achn. holsatica).
Marked specimens of this taxon are named on two slides. As lectotype is
here taken:
N17/27. Rumanien. 1.
Finder: 436.8; 498.1; 556.5-8.
Isolectotype:
N15/42. Rumanien. 2.
Finder: 379-7; 465-3-6.
96-5 Achnanthes montana var. tropica Hustedt Plate 334/35-52
op 96, t 409/58-63.
Description in op 103, P 380 ("Nachtrage").
Marked - unnamed - specimens from the type locality were found on the
following slide which must therefore be considered as the holotype:
394/36. Sumatra. Musi-Oberlauf. M3e.
The taxon is frequent, and several specimens are in each circle.
Finder: 464-4-5; 616.2-3.
Further slide:
Ma2/96. Java. Telaga Pasir. Abflufi. SP5bB.
Marked specimens named on the label, "montana var." being crossed out.
Finder: 406.1; 433-1; 490-5-8; 493-2.
96-6 Achnanthes lacunarum var. fonticola Hustedt Plate 335/1-5
op 96, t 409/64-65-
Description included in plate explanation. See also op 103, p 380
("Nachtrage").
The i-types of the two specimens illustrated from the two different
localities are extant. As lectotype is here chosen:
Ma3/32. Java, R.Lamongan. Quelle-Austritt. KLQulaa.
Finder: 406.6-9 (i-type f 64-65).
The other slide:
Mal/100. Java, R.Bedali, Kl. Wasserfall. KB3c
Finder: 377-7 (i-type f 66-67).
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaql
229
96-7 Achnanthes temiistriata Hustedt Plate 335/18-25
op 96, t 410/8-9.
Description in op 135, P 384, f 57-59-
Marked and named specimens of this taxon occur on four slides. As lectotype
is chosen:
Ma3/41- Demerara River. 9-
Finder: 614-7-8; 672.3-
Isolectotypes:
S3/33- Demerara River. 10. X10/91- Demerara River. 86.c.4.
Finder: 312-5-6; 372.8-9; 706.4- Finder: 437-4-7-
N18/51- Demerara River. 86.c.5-
Finder: 404-2-3.
96-8 Achnanthes arcus Hustedt Plate 336/1-9
op 96, t 410/10-14.
Description in op 108, p 38, f 44-48.
Of the two slides with marked specimens, both with names on index sheets,
the following is selected as lectotype:
397/46a. Wawontoa-See, Celebes. 75- 2.
Finder: 256.1-4; 344-1-4-
Isolectotype:
397/46b. Wawontoa-See, Celebes. 75* 1-
Finder: 558-2.
Two unrecorded specimens are accidentally (with others) marked on the
following slide:
397/47a. Wawontoa-See. Celebes. 74- 1.
Finder: 347-2; 439-6.
The taxon is frequent on this slide.
96-9 Achnanthes lata Hustedt Plate 335/6-17
Op 96, t 410/15-20.
Description in op 108, p 36, f 38-43-
Marked specimens, all named on index sheets, were found on three slides
of which the following may serve*as lectotype:
397/47a. Wawontoa-See. Celebes. 74- 1.
Finder: 347-2; 439-6.
The taxon is abundant.
Paralectotype:
397/46a. Wawontoa-See, Celebes. 75- 2.
Finder: 345-8.'
Further slide:
397/37- Celebes. 64. Matano-See.
Finder: 405-3-

230
96-10 Achnanthes arguta Hustedt Plate 335/26-34
Op 96, t 410/21-22.
Validating description: Valvae anguste lanceolatae apicibus rotunde capi-
tatae, 29-41 urn longae, 5-6 urn latae. Areovalvis
area axialis late lanceolata.
Three slides contain marked specimens named on index sheets. As lectotype
may serve:
Zt3/63. Campeche Bay. 63a.
Finder: 372.2-3; 530.8-9.
Isolectotypes:
Zt3/64- Campeche Bay. 63a. Zt3/99- Campeche Bay. 63a.
Finder: 466.3. Finder: 311.1.
96-11 Achnanthes trigibba Hustedt Plate 336/IO-I8
op 96, t 410/23-24.
Validating description: Valvae fere lineares, in media parte et apicibus
gibbosae, apicibus non protractis, rotundatis,
23-33 P& longae, 3-5-4 ^m latae. Areovalva cum
area centrali parva, rhombica, raphovalva sine
area centrali.
Of the four slides with marked specimens., all named in index sheets, the
following is taken as lectotype:
Zt3/63- Campeche Bay. 63a.
Finder: 260.4 (i-type f 23-24); 282.8-9-
Isolectotypes:
Zt3/64- Campeche Bay. 63a. Zt3/66. Campeche Bay. 63a.
Finder: 370.6; 38O.I-4. Finder: 254-3-
Zt3/65- Campeche Bay. 63a.
Finder: 471-9-
96-12 Achnanthes woltereckii Hustedt Plate 336/20-28
Op 96, t 410/25-28.
Description in op 108, p 36, f 34-37-
The taxon is nowhere recorded by name or marked. It was accidentally marked
(two specimens) on the following slide which is therefore proposed here
as lectotype:
397/47a. Wawont oa—See. Celebes. 74-1-
Finder: 347.2.
The species is not rare, a few unmarked specimens from this slide are
included.
Op. 97- A. Schmidts Atlas der Diatomaceenkunde, Heft 104, t 413-416, 1937-
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler.
231
97-1 Achnanthes oestrupii var. lanceolata Hustedt Plate 336/29-31
Op 97, t 413/1-2.
Validating diagnosis: A typo valvis lanceolatis differt.
Holotype:
Ma3/8l. Lojosee. Finnland.
Marked specimen named "Achnanthes hungarica var." on the label, the word
"hungarica" being crossed out.
Finder: 580-3-6.
97-2 Achnanthes hauckiana forma lancettula Hustedt Plate 336/19
Op 97, t 414/25-26.
Validating diagnosis: Differt a varietate nominata valvis lanceolatioribus.
The taxon is nowhere marked or recorded by name. As lectotype is therefore
chosen a slide with material from the type locality on which one valve
was found:
Mal/78.- Veisses Meer. l.a.
The species name only is on the label.
Finder position of the unmarked specimen: 403-2.
97-3 Achnanthes marina Hustedt Plate 337/1-6
Op 97, t 415/1-2
Validating description: Valvae elliptico-lanceolatae, apicibus non
protractis, circiter 37-40 |im longae, 9-10 urn latae.
Areovalva cum area axiali lata, lanceolata.
Holotype:
N18/90. Balearen. 4-
Marked specimens named "Achn." on index sheet.
Finder: 285-9; 404-8-9; 437-4-
N.B. Our micrographs show that the structure of the raphe valve differs
considerably from that in Hustedt's drawing.
97-4 Achnanthes meisteri Hustedt Plate 338/1-9
Op 97, t 415/19-20.
Validating description: Valvae late ellipticae, apicibus anguste rostratis,
30-45 um longae, 20-25 M-m latae. Areovalva cum
striis transapicalibus diplopunctatis, sine area
centrali.
There are three slides with marked specimens named on index sheets. As
lectotype is here chosen:
Zt3/69- Campeche Bay. 63a.
Finder: 320.2-3 (i-type f 19-20).
Isolectotypes:
Zt3/68. Campeche Bay. 63a.
Finder: 461.6.
Zt3/99. Campeche Bay. 63a.
Finder: 646.7-

232
97-5 Achnanthes valida Hustedt Plate 337/7-14
Op 97, t 416/39-44.
Validating description: Valvae late elliptico-lanceolatae, apicibus plus
minusve cuneatis, non protractis, 24-30 urn longae,
12-14 um latae. Areovalva cum striis transapicali-
bus diplopunctatis areaque axiali anguste lanceo-
lata.
Holotype:
Ma3/24. Bessels Bay.
Marked specimens named on the label
Finder: 491.6; 493-7; 6l6.7; 641-6.
N.B. The structure depicted by Hustedt in his f 44 is that of the
rapheless valves. I have strong doubts that Hustedt would have been able
to resolve the finer structure of the raphe valves which is only in a few
instances resolved in our micrographs and will perhaps not show in the
printed plate (t 337/14).
Op. 98. Systematische und okologische Untersuchungen uber die Diatomeen-
flora von Java, Bali und Sumatra nach dem Material der Deutschen Limnolo-
gischen Sunda-Expedition. Teil I. Systematischer Teil, Schlufi. Arch.
Hydrobiol., Suppl. 15, 393-506, 1938.
98-1 Pinnularia stomatophora forma recta Hustedt Plate 339/3-4
Op 98, p 396, t 22/2.
Holotype:
P3/71. Sumatra. Tobasee. TP2d.
Marked specimen named on the label.
Finder: 408-5-
98-2 Pinnularia hemiptera forma constricta Hustedt Plate 339/1-2
Op 08, p 397, t 20/37-
Holotype:
394/41. Musigebiet, Bach. Sumatra. M4ay.
Marked, unnamed specimen.
Finder: 350.7-
98-3 Pinnularia sundaensis Hustedt Plate 339/5-8
op 98, p 402, t 23/1-2.
Of the five slides bearing the species name on their labels I designate
the following as lectotype:
P3/51. Danau di Atas. Sumatra. A4e.
Marked specimen.
Finder: 552.6 (i-type f 1).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaql
233
Paralectotype:
P3/52. Danau di Atas. Sumatra. A3c.
Marked specimen.
Finder: 431.4-
The other slides:
P3/53- Tjibeureum, Guwa Lalai. Java. TJ1.
The taxon is frequent, unmarked.
P3/54. Tjibodas, Java. Guwa Lalai. TJ1.
The taxon is frequent, unmarked.
P3/55. Seraju-Quelle. Java. D6ay.
Marked specimen.
Finder: 613-8.
98-4 Neidium gracile Hustedt Plate 340/1-5
Op 98, p 406, t 16/8-9-
Four slides have the species name on their labels and all specimens are
marked. Of these I select as lectotype:
Nel/21. Java. B2dy. Buitenzorg. Teich. Nitella.
Finder: 530.8 (i-type f 9); 583-4-
Isolectotypes:
Nel/23. Buitenzorg. Bot. Garten. Java. B2dy-
Finder: 284-5; 315-9; 374-7; 435-4-5; 439.4-
Nel/22. Buitenzorg. Bot. Garten. Java. B2dy.
Finder: 437-6.
Further slide:
Nel/24. Sumatra. Sawah bei Banding Agung. RSaB.
Finder: 400.8-9; 465-3-6; 470.1-4; 586.8-9-
98-5 Neidium gracile forma aequalis Hustedt Plate 340/6
Op 98, p 406, t .16/10.
Holotype:
Nel/8l. Sumatra. Singkarak-Meer. 50 m. 5-3-29-
Marked specimen named on the label.
Finder: 550.9-
98-6 Neidium javanicum Hustedt Plate 340/7-8
Op-98, p 408, t 16/12-13.
Holotype:
Nel/10. Java. Ranu Bedali. 8.5 m, u. 22.11.28.
Marked specimen named on the label.
Finder: 465-3 (i-type f 13).
98-7 Neidium hermannii Hustedt Plate 340/9-10
Op 98, p 408, t 16/11.

234
Holotype:
Nel/84. Panjingahan. Wasserfall. SKB3ae. Sumatra.
Marked specimen named on the label.
Finder: 524- - 6.
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 107, 1985) include this
taxon as synonym in Neidium javanicum Hustedt (see tx 98-6).
98-8 Gyrosigma fonticolum Hustedt Plate 34l/l-4
Op 98, p 409, t 14/1.
The taxon is nowhere named or marked. It was accidentally marked with
Nitzschia pseudosigma (tx 98-56) on the following slide which is therefore
designated as lectotype:
Wl/35. Java, Rami Lamongan. Quelle 3, Abfluft. KLQu3b. 19.11.28.
Finder: 369.1J 408.1-4; 492.5.
The taxon is otherwise very frequent in the material.
98-9 Tropidoneis lepidoptera var. javanica Hustedt Plate 340/11-12
Op 98, p 412, t 16/7.
Holotype:
Ra/45. Java, Ranu Lamongan. Quelle 3, Ceratophyllum. KLQu3c. 19.11.28.
Marked specimen named on the label "Tropidoneis javanica Hust."
Finder: 467.8-9.
98-10 Amphora fontinalis Hustedt Plate 342/1-10
Op 98, p 414, t 24/4-5.
Of the five slides bearing the species name on their labels - no specimens
being marked of this frequent taxon - I select as lectotype:
Ul/88. Java. Ranu Pakis. Quelle 5- KPQu5. 31.10.28.
The other slides:
Ul/86, Java, Tjibodas, warmer Bach. TJ6b.
Ui/87. Musigebict. Bach. Sumatra. K4a3.
Ul/89. Java, Dlb. Dieng Plateau. Telaga-Merdodo.
Ul/90. Ajer Panas. Tjibodas. Java. TJ7u.
98-11 Amphora rugosa Hustedt Plate 342/11-15
Op 98, p 415, t 24/1-3-
Of the two slides which have the species name on their labels I select
as lectotype:
Ul/60. Panjingahan. Wasserfall. SKB3bB'. Sumatra.
Marked specimens.
Finder: 345.1-4; 375-6; 435-9; 587-6-9-
The other slide:
Ul/46. Java, R.Pakis. Quelle 3- KPQu3-
No marked specimens.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwei:
235
N.B. None of the marked specimens on slide Ul/60 is in a favourable
position for photography. Therefore unmarked specimens were selected. -
The scale of Hustedt's drawings must be x2000, the striation is by far
too coarse, we counted 18 striae in 10 jim.
98-12 Amphora subturgida Hustedt Plate 341/5-8
Op 98, p 416, t 24/9-11^
Holotype:
Ul/90. Ajer Panas. Tjibodas. Java. TJ7u.
The taxon is frequent, unmarked, named on the label.
98-13 Cymbella delicatissjjna Hustedt Plate 343/1-10
Op 98, p 419, t 25/10-13-
The taxon is nowhere marked or named. Therefore the following lectotype
is here designated:
393/99* Danau di Atas. Sumatra. Alaa.
The species occurs very abundantly.
Isolectotypes:
158/51. Sumatra. Alaa. Danau di Atas. Ostufer.
N7/l6. Danau di Atas, Sumatra. Alaa.
98-14 Cymbella thienemannii Hustedt Plate 343/11-17
Op 98, p 420, t 24/16-20.
This taxon is nowhere marked or named. It is particularly frequent in a
fountain near Ngadisari, Hustedt's sample 123, as quoted by Hustedt. From
this sample five slides were made at different times by Hustedt of which
I choose as lectotype:
N8/90. Java, Tengger Quelle. TGld.
Isolectotypes:
Tl/88. Java. Quelle bei Ngadisari am Tengger-Massiv. TGld.
I49/22. Java. TGld. Ngadisari. Quell-Wand.
149/23. Java. TGld. Ngadisari. Quell-Wand.
149/24. Java. TGld. Ngadisari. Quell-Wand.
98-15 Cymbella ruttaeri var.obtusa Hustedt Plate 343/18-20
Op 98, p 421, t 25/7-9-
The taxon is nowhere marked or named but is sufficiently frequent in
Hustedt's sample no. 507 (= expedition sample code SKB3aa ). Of the four
slides that Hustedt made of this sample the following is selected as
lectotype:N12/22. Sumatra, Wasserfall v. Panjingahan. SKB3aa.
Isolectotypes:
157/98. Sumatra. SKB3aa. Panjingahan, Kalktuff.
157/99. Sumatra. SKB3aa. Panjingahan, Kalktuff.

236
157/100. Sumatra. SKB3aa. Panjingahan, Kalktuff.
98-16 Cymbella fonticola Hustedt Plate 343/21-25
Op 98, p 422, t 24, 21-24-
This taxon is not recorded by name or marks but occurs sufficiently
frequently in the material from Ngadisari, as stated by Hustedt in the proto-
logue. From the slides made with this material I select as lectotype:
N8/90. Tengger. Quelle. TGld.
Isolectotypes:
Tl/88. Java. Quelle bei Ngadisari am Tengger-Massiv. TGld.
149/22. Java. TGld. Ngadisari. Quell-Wand.
149/23. Java. TGld. Ngadisari. Quell-Wand.
149/24. Java. TGld. Ngadisari. Quell-Wand.
98-17 Cymbella spicula Hustedt Plate 343/26-30
Op 98, p 422, t 25/14.
Holotype:
Tl/77b. Sumatra. Toba-Heide. THIS.
Marked specimens named on the label.
Finder: 350.2- 371.2-5; 376.6 (i-type).
98-18 Cymbella palustris Hustedt Plate 344/1-6
Op 98, p 423, t 24/25-26.
This taxon is nowhere named or marked. However, it occurs in masses
together with the preceding taxon 98-17, and with this it was also
accidentally marked, for which reason I designate the same slide as lectotype:
Tl/77b. Sumatra. Toba-Heide. THIS.
Finder: 347.3; 350.2; 371.2-5; 376.6.
N.B. I want to point to the characteristic undulation of the raphe
which Hustedt did not observe ("Raphe gerade...").
98-19 Cymbella javanica Hustedt * Plate 344/15-18
Op 98, p 424, t 25/1-3.
Two slides made with the same material have this species' name on their
labels, but no specimens are marked. As lectotype is chosen:
T2/49. Java, Fischteich a. Puntjakpafl. B6b.
Isolectotype:
T2/50. Java, Fischteich a. Puntjakpaft. B6b.
98-20 Cymbella sumatrensis Hustedt Plate 344/7-10
Op 98, p 429, t 25/17-19.
Hustedt wrote the species name on quite a number of slide labels, Tl/92-
Tl/lOO. All these slides are mounted with material from the German Sunda
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqi
237
Expedition. No specimens were marked. Of the nine quoted slides three
contain the same sample, and the taxon occurs on these in masses. Therefore
the following slide is selected as lectotype:
Tl/94. Singkarak-See. Sumatra. SK2aB.
Isolectotypes:
Tl/98. Sumatra. SK2aB. Singkaraksee.
Tl/99- Sumatra. SK2aB. Singkaraksee.
98-21 Gomphonema javanicum Hustedt Plate 344/19-22
Op 98, p 435, t 27/2-5.
Of the two slides having the taxon's name on their labels 1 select here
as lectotype:
Sl/42. Java, Ranu Oindungan. 6. KK6.
The species is unmarked but occurs almost purely.
The other slide:
S2/74- Java. Ranu Pakis. Ostufer, Stein. KP1'. 29.10.28.
The taxon is unmarked, frequent, but not nearly so as on the first-named
slide.
98-22 Gomphonema subventricosum Hustedt Plate 344/H-I4
op 98, p 440, t 27/25-26.
Holotype:
S2/75. Sumatra. SKB2a. Bach am Subangpaft.
Marked specimens named on the label.
Finder: 612.9; 649-2-5; 650.7; 651.1.
98-23 Gomphonema clevei var. javanica Hustedt Plate 345/1-5
op 98, p 44i, t 27/6-13.
This taxon is nowhere marked. Of the two slides with its name on their
labels I select as lectotype:
S2/27. Java, R.Bedali, an Lavastiick. KB2a.
The taxon is almost pure.
The other slide:
S2/77. Java. B4aa. Tjigombong.
98-24 Gomphonema lingulatum var. constricta Hustedt Plate 345/6-7
Op 98, p 443, t 27/19-
Holotype:
S2/99- Tobasee. Sumatra. T15a u.
Marked specimens named on the label.
Finder: 227-7; 381.7-8 (i-type).
N.B. Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae,
p 47/48, 1985) includes this taxon in Gomphonema grovei var. lingulatum
(Hustedt) Lange-Bertalot.

238
98-25 Gomphonema punctatum Hustedt Plate 345/8
Op 98, p 443, t 27/20.
Holotype:
Sl/27. Sumatra. Meer y. Singkarak. 130 m.
Marked specimen named on the label.
Finder: 283.7.
98-26 Gomphonema tenerrimum Hustedt Plate 345/9-15
Op 98, p 444, t 27/23-24.
Holotype:
Ra/45. Java, Ranu Lamongan. Quelle 3, Ceratophyllum. KLQu3c.
Marked, unnamed specimens.
Finder: 319-4; 402.5; 462.9^ 588.6 (i-type f 23).
Further slide (mounted in Hyrax):
S2/76. Sumatra, Zuflufl des Ranausees. RE'7.
Marked specimens named on the label.
Finder: 402.3 (2 frustules); 406.1-4; 406.3-6.
98-27 Denticula bicuneata Hustedt Plates 345/l6-20, 346/1-2
Op 98, p 446, t 36/10-12.
There are four slides, all with marked specimens named on the labels. Of
these I select as lectotype:
V/52. Tobasee. Sumatra. TPlc.
Finder: 462.3; 468.6; 583-8.
The other slides:
V/39* Sumatra. Tobasee. 15-a.
Finder: 495-5-
V/43- Sumatra. Tobasee. 15a. 77 m. Mitte. a.
Finder: 376.6.
V/44. Sumatra. TWlb. Samosir. Tobasee. Solfatarenfeld.
Finder: 551-2-3 (i-type f 11-12).
N.B. In virtually all specimens marked by Hustedt the apical axis is
bent, i.e. one side is rather concave, the other more straight or less
concave. Hustedt failed to report this situation in his description.
98-28 Denticula spathulifera Hustedt Plate 346/3-9
Op 98, p 446, t 36/1-4-
There are three slides with the species name on their labels, all with
marked specimens. Of these the following is designated as lectotype:
V/28. Sumatra. Tobasee. 15a. Mitte. 77 m. a.
Finder: 374-1; 465-4; 551-1-
Isolectotype:
v/27. Sumatra. Tobasee. 15a.
Finder: 313-5-6; 318.8; 383-7; 527-7-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
239
Paralectotype:
V/26. Toba-See. Sumatra.
This is a mount with picked specimens. Since the locality is insufficiently
recorded, it was not chosen as lectotype.
98-29 Denticula lata Hustedt Plate 347/1-8
Op 98, p 447, t 36/5-9-
There are three slides having marked specimens which are named on the
labels. Of these the following is selected as lectotype:
V/36. Tobasee. I5d. Sumatra.
Finder: 407-5-8; 468.7-8; 525-4; 554-2-5-
Isolectotype:
V/35- Tobasee. Sumatra. Thien. T15d.
Finder: 494-5; 526.7-8.
Paralectotype:
v/34- Sumatra, Tobasee, Siidbecken, 140 m.
Finder: 437-1-2 (probably i-type f 5)-
98-30 Denticula elongata Hustedt Plate 348/1-8
Op 98, p 448, t 37/1-6.
The following is selected as lectotype:
V/25. Tobasee, 15a. Mitte. Sumatra, a.
Marked specimens named on the label.
Finder: 346.1-4; 436.7; 493-2; 554-9-
Paralectotype:
V/24. Sumatra. Tobasee. Siidbecken. TSli.
The label bears the taxon's name which is very frequent though unmarked.
98-31 Denticula robusta-var. dubia Hustedt Plate 349/1-2
Op 98, p 448, t 37/12-13-
Holotype:
V/41. Tobasee. Sumatra. TD19b.
This fossil specimen is marked and named on the label.
Finder: 321.3.
This specimen is the i-type of f 30b-c in op 87, see tx 87-20.
We succeeded also in finding the i-type of f 12. It is marked on a slide
made with Hustedt1s sample no. 625 (expedition code TPlc), which bears
only the specific name on its label:
V/53. Tobasee. Sumatra. TPlc.
Finder: 521.5-
98-32 Denticula vanheurckii forma ventricosa Hustedt Plate 349/7-8
Op 98, p 449, t 39/9-

240
Holotype:
394/?6b. Tobasee. 75 m. Pangururan-B. Sumatra.
Marked, unnamed specimen.
Finder: 409-5*
98-33 Denticula vanheurckii var. subrostrata Hustedt Plate 349/3-6
Op 98, p 450, t 38/12-16.
As lectotype is here selected:
V/23. Danau di Atas. Sumatra. AlaB.
Marked specimens named on the label.
Finder: 436.8-9 (2 specimens).
Paralectotype:
V/22. Danau di Atas. Sumatra. Alay.
The taxon_, unmarked but frequent, is named on the label.
98-34 Denticula vanheurckii var. obtusa Hustedt Plate 349/9-12
Op 98, p 450, t 39/1-8.
Holotype:
V/24. Sumatra. Tobasee. Siidbecken. TSli.
The taxon is abundant on this slide, unmarked, named on the label.
98-35 Denticula vanheurckii var. angusta Hustedt Plate 350/1-5
op 98, p 450, t 38/17-18.
The taxon is nowhere marked or recorded by name on the slides. As lectotype
is therefore proposed:
V/24. Sumatra. Tobasee. Siidbecken. TSli.
The taxon is frequent.
98-36 Rhopalodia gibberula var. globosa Hustedt Plate 350/6-7
Op 98, P 458,. t 14/15.
Holotype:
Vb/8l. Java. R.Pakis,, groftte Tiefe. 27.X.28. Schwarze ob. Schicht.
Marked specimen named "Rhopalodia" on the label.
Finder: 316.7-8.
98-37 Rhopalodia graciloides Hustedt Plate 35l/l-5
Op 98, p 459, t 39/24-25.
The taxon's name appears on three slide labels. No specimens being marked,
I choose the following as lectotype:
Vb/49. Tjibeureum. Wasserfall. Java. TJ2IIIc.
Isolectotype:
Vb/48. Tjibeureum. Wasserfall. Java. TJ2IIIc.
Further slide:
Vb/50. Java, Telaga Pasir. Abflufi. SP5a6.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler.
98-38 Rhopalodia contorta Hustedt
op 98, p 460, t 39/26-27.
Holotype:
155/48. Sumatra. Ranausee. Zuflufl. RE3d.
Marked, unnamed specimens.
Finder: 343-5-6 (i-type f 26); 499-4 (i-type f 27).
Isotype:
155/49. Sumatra. Ranausee. Zuflufi. RE3d.
Marked, unnamed specimens.
Finder: 374-7; 582-7-
98-39 Hantzschia sigma Hustedt Plate 353/1-7
Op 98, p 463, t 40/5-7-
There are four slides with marked specimens, from different localities,
on three appears the taxon's name. As lectotype is selected:
Wa/8. Panjingahan. Wasserfall. SKB3be. Sumatra.
Finder-: 345-4; 349-6; 495-9 (i-type f 6-7); 584.6.
Isolectotype:
158/15- Sumatra. SKB3be. Panjingahan.
Marked, unnamed specimens.
Finder: 340.3; 524-1.
Further slides with the taxon1s name on their labels:
Wa/9. Quellen Pukit Kili. Sumatra. SKWld.
Finder: 462.6.
Wa/lO. Singkarak. Sawah. Sumatra. SKS4-
Finder: 346-9; 498-5; 584-1-4-
N.B. It is remarkable that the specimen at finder position 349-6 on
slide Wa/8 shows the diagonal raphe symmetry of the genus Nitzschia,
whereas in the other specimens the raphe of both valves is on the same
side.
98-40 Hantzscliia mirabilis Husttdl Plate 354/1-7
Op 98, p 463, t 41/37-38.
Two slides with the same sample contain marked specimens and have the
taxon's name on their labels. As lectotype is therefore selected:
Wa/6. Sawah a. Ranausee. Sumatra. RSb.
Finder: 349-7; 437-2; 529-5; 618.1.
Isolectotype:
Wa/7- Sawah a. Ranausee. Sumatra. RSb.
Finder: 347.2-5; 494-4-5-
98-41 Hantzschia hermannii Hustedt Plate 355/5-7
op 98, p 464, t 40/2-3.
241
Plate 352/1-4

242
Holotype:
Wa/14. Sumatra. Bachtal b. Balige am Tobasee. TBo3c.
The taxon is named on the label but unmarked; it is frequent on this
slide.
98-42 Nitzschia geniculata Hustedt Plate 355/1-4
Op 98, p 467, t 40/29-30.
Holotype:
394/39- Aer Djermih, Musigebiet. M4aa. Sumatra.
Marked, unnamed specimen, two valves of the same frustule.
Finder: 472.2-5.
At finder position 405-5 another unmarked valve, 48 urn long.
98-43 Nitzschia thienemannii Hustedt Plate 356/1-6
Op 98, p 468, t 41/34-36.
Four slides have this taxon's name on their labels. One is a slide with
picked specimens, not mounted by Hustedt, however. One slide has marked
specimens for which reason I designate it as lectotype in addition to the
fact that one specimen represents an i-type:
W4/46. Java, Kuripan. Salzquelle, Pftitze. B29c.
Finder: 318-4-7; 374-5 (i-type f 35); 377-9-
Paralectotypes:
W4/43. Java. Kuripan.
A slide with picked specimens, probably mounted by Albert Elger.
W4/44. Java. Kuripan. Quellabfluft. BK4d.
The taxon is very frequent, unmarked.
W4/45- Java. Kuripan. Quellabflufi. BK4d.
The taxon is very frequent, not marked.
N.B. Hustedt1s count of the striae ("nur 20-22 in 10 u") is grossly
incorrect, we counted about 40 striae in 10 urn, and there is reason to
doubt that Hustedt was able to resolve them.
y8-44 Nitzschia invicta Hustedt Plate 357/1-7
Op 98, p 473, t 40/27-28.
Holotype:
W2/60. Java, R.Lamongan. Quelle 3. KLQ3b.
Marked specimen named on the label.
Finder: 436.1 (i-type f 28).
This is an aggregate of four valves, two frustules after cell division.
N.B. We have examined all slides from sample no 30 (official expedition
code KLQu2aB), the second locality given by Hustedt, without finding marked
specimens, or specimens at all.
We succeeded in photographing the - so far unresolved - striae and
counted 48-54 in 10 um. The latter value was found in the valve shown on
plate 357/2, of which the striae will probably not show in print.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler. ru
243
98-45 Nitzschia diducta Hustedt
Op 98, p 473, t 40/20.
Holotype:
X7/66. Fischteich am Puntjakpass, Java. B6a.
Marked specimen named on the label.
Finder: 499-9-
98-46 Nitzschia ruttneri Hustedt Plate 355/8-15
Op 98, p 477, t 41/13-16.
Holotype:
W3/78. Java, Telaga Warna. B5d.
The species is frequent, not marked, named on the label.
N.B. Hustedt expressed himself rather ambiguously with respect to the
presence or absence of a central nodule. The specimens on the type slide
now examined show generally more, sometimes less, clearly .that there is
a central nodule. Sometimes there is also a slight constriction visible,
another good indication for the presence of a central nodule.
98-47 Nitzschia intermedia var. capitata Hustedt Plate 358/1-2
Op 98, p 478, t 41/3.
Hustedt listed this taxon in his records only from fossil samples of Lake
Toba. We were unable to locate marked specimens on slides made with the
relevant samples. We did find, though, an unmarked, unnamed specimen on
the following slide which is therefore designated as lectotype.:
159/45- Sumatra. Tobasee. Porseabucht. 15aII. Unter d. Kontaktz.
Finder position of the unmarked specimen: 441*6.
98-48 Nitzschia similis Hustedt Plate 358/3-4
op 98, p 478, t 41/1-2.
Holotype:
Nl/59. Tobasee. Sumatra. TBlg.
Marked specimen, a frustule, named on the label.
Finder: 342.1-4 (i-type f 1-2).
N.B. Because of Nitzschia similis A. Cleve-Euler 1917, Hustedt's taxon
has to be renamed:
Nitzschia intermediopsis Simonsen, novl nomen, syn. Nitschia similis
Hustedt, op 98, p 478.
The position of the fibulae, not noticed by Hustedt, would suggest
that this taxon should be transferred to Hantzschia- But with only this
one specimen of two separated valves the situation cannot be clarified.
The apparent lack of a central nodule would not support a combination with
Hantzschia.
98-49 Nitzschia strigillata Hustedt Plate 357/8-11
Op 98, p 479, t 40/26.
Plate 357/12-13

244
The taxon is nowhere recorded or named. Of the many slides examined in
search of the species, the following may be selected as lectotype,, the
locality being mentioned in the protologue:
148/97- Java. KK1. Ranu Klindungan. Najas.
N.B. Our specimens have 30 transapical striae in 10 um, whereas
Hustedt recorded "etwa 40".
98-50 Nitzschia striolata Hustedt Plate 357/14-18
Op 98, p 479, t 40/21-23.
Hoiotype:
W2/78. Java. Ranu Lamongan. PI.
The taxon is frequent on the slide, not marked,- named on the label.
98-51 Nitzschia sundaensis Hustedt Plate 358/5-8
op 98, p 480, t 41/29.
Holotype:
Nbl/41. Java. Buitenzorg. Bot. Garten". B2a.
Marked, unnamed specimens.
Finder: 229.6-9 (i-type); 257-1-2.
N.B. Hustedt's strial count ("etwa 36 in 10 u") is incorrect. The valve
at 229.6-9 has 47 striae, that at 257-1-2 has 45 striae in 10 um, as our
micrographs prove. It is quite improbable that Hustedt was in the position
to resolve the structure of this taxon.
98-52 Nitzschia palea var. sumatrana Hustedt Plate 359/1-9
Op 98, p 483, t 41/10.
The taxon is nowhere named, and I am not certain whether the specimens
shown are really what Hustedt had in his mind. No type is therefore
designated. Very similar valves, one accidentally enclosed in a ring along with
another species, are on the following slide:
159/56. Sumatra. TBIecu Tobasee. Balige QuellriA.
Finder: 404.'5.
At 465.1 an unmarked specimen.
N.B. In op 122, p 147 (under Nitzschia palea var. tropica) Hustedt
corrects his measurement of the breadth of this taxon which should be
5 um and not 8.
The structure of our specimens is very delicate, although only 33-34
striae in 10 urn were counted. Hustedt had not resolved the striae.
98-53 Nitzschia paleoides Hustedt Plate 359/16-19
op 98, p 483, t 41/11.
We found one marked, unnamed specimen that probably represents this taxon
on the following slide:
394/69. Tobasee. TBlb. Sumatra.
Finder: 460.4-7-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*:
245
N.B. The two valves of this frustule have 35-36 striae in 10 um and
not "about 40", as stated by Hustedt.
98-54 Nitzschia bacata Hustedt Plate 359/10-15
Op 98, p 485, t 41/30-33-
Holotype:
W2/78. Java. Ranu Lamongan. PI.
The taxon is frequent on the slide, unmarked, named on the label.
N.B, With oblique illumination we were able to resolve parts of the
structure which Hustedt had not seen. We counted 44 striae in 10 um.
98-55 Nitzschia sigma var. fonticola Hustedt Plate 360/1-8
Op 98, p 486, t 40/16-17.
Two slides bear this taxon's name on their labels. One contains marked
specimens, one valve, two complete and one fragmented girdle views and
none representing the illustrations; it is mounted in Styrax. The other
is a Hyrax slide with unmarked specimens, but the taxon is very frequent.
This situation makes me prefer the latter as lectotype:
W4/22. Java. R.Pakis, Quelle 3. KPQu3.
The other slide:
W4/23- Quellen Bukit Kili. Sumatra. SKW2bB.
Finder: 345-5-8; 468.9; 549-2; 559-4-7-
N.B. Note the typical structure of the fibulae which are branched at
the end where they are in contact with the valve face.
98-56 Nitzschia pseudosigma Hustedt Plate 361/I—7
Op 98, p 486, t 40/13-15.
Holotype:
Wl/35. Java, Ranu Lamongan. Quelle 3, Abflufi. KLQu3b. 19.11.28.
Marked specimens named on the label.
Finder: 369.1 (i-type f 13); 374-2 5; 382.4; 408.1-4 (i-type f 14); 492.5-
N.B. Hustedt did not resolve the'"structure. The specimen at 369-1 has
48 striae in 10 um, and our micrographs ,of the specimen at 492.5 show that
the intercalary bands have also extremely delicate striae.
98-57 Nitzschia prolongata Hustedt Plate 362/I-5
Op 98, p 489, t 41/28.
Holotype:
Wl/29. Sumatra. Tobasee. TSla.
Marked specimens named on the label.
Finder: 257-1-4; 345-8; 376.6-9; 400.7; 407.4-7; 489.4 (i-type?).

246
98-58 Nitzschia longirostris Hustedt Plate 362/6-IO
Op 98, p 490, t 40/8.
Holotype:
146/61. Java, R.Lamongan. Quellaustritt, an Felsblock. KLQulcy. 17.11.28.
Marked, unnamed specimen, the i-type.
Finder: 340.3-
Paratypes, both marked but unnamed:
W5/82. Java, Ranu Lamongan. Quelle 3, Abfluft. KLQu3b. 19-11.28.
Finder: 468.3.
Wl/35. Java, Ranu Lamongan. Quelle 3, Abflufi. KLQu3b. 19-11.28.
Finder: 382.4 (with Nitzschia pseudosigma, tx 98-56).
98-59 Surirella subturgida Hustedt - Plate 363/1-3
Op 98, p 493, t 42/2.
Holotype:
X7/66. Fischteich am Puntjakpass, Java. B6a.
Marked specimen named on the label.
Finder: 321.2-5.
98-60 Surirella angusticostata Hustedt Plate 364/I-6
Op 98, p 494, t 42/3.
Of the five slides with the species name on their labels I select here
as lectotype:
XI/l3. Buitenzorg. Bot. Garten. Java. B2a.
Marked specimens.
Finder: 375-7 (i-type); 436.1; 463-3; 469-7; 550.4-7; 558.5-8.
The other slides:
XI/14. Sumatra. TBoic. Balige, Bachtal.
Marked specimens.
Finder: 405-8; 528.4-
XI/l5. Sumatra. TBolc. Balige, Bachtal.
Marked specimen.
Finder: 262.5-6.
X7/38. Sumatra. SKBlb. Subangpafi. Bach.
The taxon is fairly frequent on this slide, not marked. The specimens of
this population are generally smaller than those in the type material.
98-61 Surirella pseudospiralis Hustedt Plate 365/1-7
Op 98, p 496, t 43/2-3-
Holotype:
X4/88. Sumatra. FH3d. Harau Kloof, uberr. Wand.
The taxon is frequent, unmarked, named on the label.
N.B. Our micrographs show that the torsion of the apical axis is often
asymmetric, the narrowest point of the figure eight being away from the
middle, thus forming a figure eight with a smaller and a larger loop.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
247
98-62 Surirella cataractarum Hustedt Plate 366/1-4
Op 98, p 498, t 43/1-
Among the four slides with the taxon's name on their labels there are three
wit'h picked specimens mounted hj Hustedt. From these three the following
lectotype is here selected:
Xl/72. Java, Tjibodas, Tjurup Tjibeureum. TJ2IIIc.
Isolectotypes, the next two with picked specimens, the last a strewn slide:
Xl/73. Java, Tjibodas, Tjurup Tjibeureum. TJ2IIIc.
Xl/74- Java, Tjibodas, Tjurup Tjibeureum. TJ2IIIc.
X4/38- Tjibeureum. wasserfall. Java. TJ2IIIc.
The taxon is frequent on this slide.
98-63 Surirella spinosa Hustedt Plate 367/1-4
Op 98, p 499, t 43/6-7-
Of the five slides with the species name on their labels there are two
with marked specimens, three specimens in all, but none representing one
of the illustrations. The other three slides contain masses of the taxon,
though unmarked, but of these I select the following lectotype:
X4/36. Tjibeureum. Wasserfall. Java. TJ2IIIc.
Isolectotypes with unmarked specimens:
X4/37- Tjibeureum. Wasserfall. Java. TJ2IIIc.
X4/38- Tjibeureum. Wasserfall. Java. TJ2IIIc.
Further slides, both with marked specimens:
X4/35- Seraju-Quelle. Java. D6da.
Finder: 585-9-
X4/39- Seraju-Quelle. J ava. D6da.
Finder: 404-1; 526.2-5.
98-64 Surirella elegans forma angusta Hustedt Plate 368/1-2
Op 98, p 500 (no illustration).
Holotype:
X2/96. Musi bei Palembang. Sumatra. Mi2.
Marked specimen named on the label.
Finder: 617-2.
N.B. The taxon is here illustrated for the first time and thus becomes
valid only now.
98-65 Surirella robusta var. annata Hustedt Plate 368/3-4
Op 98, p'501, t 42/1,
The taxon is nowhere recorded except on a slide from Lake Toba which was
mounted after the publication of op 98. Of the two slides that Hustedt
mounted with the material cited in the protologue, the following is here
selected as lectotype (the taxon is frequent on both slides but unmarked):

248
158/69. Sumatra. A4b. Danau di Atas. Schlenke.
Isolectotype:
158/70. Sumatra. A4b. Danau di Atas. Schlenke.
98-66 Surixella proxima Hustedt Plate 369/1-4
Op 98, p 502, t 43/4-5-
Holotype:
X5/17. Bachtal bei Balige, Tobasee, Sumatra. TBo3c.
The taxon is frequent, not marked, named on the label.
98-67 Surixella fonticola Hustedt Plate 370/1-6
Op 98, p 504, t 42/4-5.
The taxon is nowhere recorded or marked. It is equally frequent in the
two samples named by Hustedt in the protologue, i.e. his nos. .24
(expedition code KLQulce) and 79 (KBlfo). As lectotype I select a slide with
material from the latter sample:
148/3. Ranu Bedali. Java. Wasserfall. KBlfa.
Isolectotype:
P2/8l. Java, R.Bedali, Wasserfall. KBlfa.
Since the two above-named slides do not contain a girdle view, this was
photographed from the following slide:
146/59- Java. R.Lamongan. Quelle-Austritt. Moos. KLQulcB. 17.11.28.
Op. 101. Diatomeen aus den Pyrenaen. Ber. Deutsch. Bot. Ges. 56, 543-
572, 1939.
101-1 Achnanthes subatomus Hustedt Plate 37l/l-4
Op 101, p 554, f 1-2.
-Holotype:
397/l8. Gave d'Ossau. Pyrenaen. 2.
Marked, unnamed specimen.
Finder: 288.6.
N.B. Lange-Bertalot & Ruppel (Arch. Hydrobiol., Suppl. 60, p 20, I98O)
synonymize this taxon with Achnanthes minutissima var. jackii (Rabenhorst)
Lange-Bertalot & Ruppel. However, they did not consult the type which is
quite different from what they claim to be the type, i.e. unmarked
specimens.
101-2 Achnanthes pyrenaica Hustedt Plate 371/9-17
Op 101, p 554, f 5-10.
Holotype:
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweS:
\
249
397/18. Gave d'Ossau. Pyrenaen. 2.
Marked, unnamed specimens (several in each circle).
Finder: 6l6-9j 618.8.
N.B. Lange-Bertalot & Ruppel (Arch. Hydrobiol., Suppl. 60, p 20, 1980)
synonymize this taxon with Achnanthes minutissima var. jackii (Rabenhorst)
Lange-Bertalot & Ruppel. The "encircled holotype" they claim to have seen
on slide 211/57 from the Lac d'Artouste (their figs 152-155) does .not
exist, however. That, slide does not have any diamond marker circles at
all.
101-3 Achnanthes amphicephala Hustedt Plate 371/5-8
Op 101, p 555, f 3-4-
Holotype:
397/18. Gave d'Ossau. Pyrenaen. 2.
Marked, unnamed specimens.
Finder: 495-7 (i-type f 3); 560.2 (i-type f 4).
N.B. Lange-Bertalot & Ruppel (Arch. Hydrobiol., Suppl. 60, p 20, 1980)
synonymize this taxon with Achnanthes minutissima var. jackii (Rabenhorst)
Lange-Bertalot & Ruppel. They did not see Hustedt's types, however, but
consulted a very different slide (no. 21l/l according to their figs 168-
198) which does not contain marked specimens, if specimens at all, of this
taxon, and I have doubts that their procedure is justified.
101-4 Navicula raucicola Hustedt Plate 371/l8-21 »
Op 101, p 559, f 11-13.
Holotype:
N13/50. Pyrenaen: Gave d'Ossau, Felshohle. 7-b.
Marked specimens named on the label.
Finder: 222.9; 225-4; 227.5; 230.4.
N.B. In contrast with Hustedt's endeavours I have remained unsuccessful
in resolving the striae of this taxon, although I have generally no great
difficulties to make visible 40 striae in 10 |im. On the other hand,
Hustedt did not point to the central raphe pores which are often rather
distant from one another.
101-5 Cymbella microcephala forma robusta Hustedt Plate 371/22-25
Op 101, p 561, f 14-15.
Holotype:
T2/98. Gave d'Ossau. Moos an Felsen. Pyrenaen. 9-b.
Marked specimens (often more than one in a circle) named on the label.
Finder: 464-3; 464-9; 525-9-
Op. 102. Die -Diatomeenflora des Kustengebietes der Nordsee vom Dollart
bis sur Elbmiindung. I. Die Diatomeenflora in den Sedimenten der unteren

250
Ems sowie auf den Watten der Leybucht, des Memmert und bei der Insel Juist.
Abh. Naturw. Ver. Bremen 31, 572-677, 1939-
102-1 Cyclotella pseudostelligera Hustedt Plate 371/26-30
Op 102, p 581, f 1-2.
We found marked, unnamed, specimens on two slides of which the following
is proposed as lectotype:
5l/l. Ems, bei Papenburg. 197-
Finder: 283-2-5 (2 specimens); 373-8; 591-1-2.
The other slide:
51/13. Ems, Leerort. 475-
Finder: 528.2.
102-2 Stephanodiscus tenuis Hustedt Plate 371/31-33
Op 102, p 583, f 3-
Holotype:
5l/l. Emsj bei Papenburg. 197*
Marked, unnamed specimens.
Finder: 284-4; 341-2; 371.2; 587-1. '
102-3 Stephanodiscus lucens Hustedt Plate 372/1-10
Op 102, p 583, f 4.
Holotype:
51/1. Ems, bei Papenburg. 197-
Marked, unnamed specimens, often several in a circle.
Finder: 284.4; 340.4; 341-2; 371.2; 587.1.
N.B. This taxon always occupied a rather isolated place in the genus.
It was therefore examined under the SEM. The complete lack of spines and
the pattern of areolation as revealed by our SEM micrographs show that
this taxon does not belong in the genus Stephanodiscus but is a Cyclotella:
Cyclotella lucens (Hustedt) Simonsen, nov. comb., synonym Stephanodiscus
lucens Hustedt, op 102, p 583, f 4-
There is generally one strutted process in the centre, sometimes two,
the number of struts of these processes is three or four. The SEM
micrographs were taken from material no. E 9947, Hunte 5 (cf op 162, p 20, 111).
102-4 Biddulphia rostrata Hustedt Plate 373/1-11
Op 102, p 591, f 5-7-
Of the three slides with marked - unnamed - specimens the following is
chosen as lectotype:
391/54. Memmert. 12341- Sandplate.
Finder: 315-4 (i-type f 5); 406.1 (i-type f 6).
Further slides:
267/48. Memmert. 12346. Verlandungszone.
Finder: 284-8.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
251
51/37. Emsj zwischen Jarssum-Borssum. 11.
Finder: 552.4-7-
N.B. Hustedt was correct in pointing to a closer relationship with
Biddulphia aurita (Lyngbye) Brebisson. However, this latter species is
the generitype of Odontella C.A. Agardh which belongs in a quite different
family, the Eupodiscaceae, because of the possession of true- ocelli on
the top of the horns. Therefore Hustedt' s taxon has to be transferred to
Agardh's genus:
Odontella rostrata (Hustedt) Simonsen, nov. comb., synonym Biddulphia
rostrata Hustedt,, op 102, p 591, f 5-7.
102-5 Eunotogramma dubium Hustedt Plate 374/1-6
Op 102, p 592, f 8-10.
There are four slides containing marked specimens, all named on index
sheets. Of these the following is here proposed as lectotype:
267/28. Leybucht. 10302. Leysand.
Finder: 314-5-8 (i-type f 9).
Three slides may be considered as paralectotypes:
267/3. Hamburger Sand, Leybucht. 31.
Finder: 492.9-
267/12. Hamburger Sand. Leybucht. 226.
Finder: 587-5-8.
267/19. Hamburger Sand. Leybucht. 14491.
Finder: 522.1-4-
Two further slides with marked, unnamed specimens:
51/13. Ems, Leerort. 475-
Finder: 408.9 (i-type f 10)-.
267/48. Memmert. 12346. Verlandungszone.
Finder: 255-4-
102-6 Plagiogramma brockmannii Hustedt Plate 374/7-9
Op 102, p 595, f 11-12.
There are four slides from which to select a lectotype. The following is
chosen:
Jb/67- Nordsee, Hoisteinische Kuste. Plankton.
The taxon occurs in masses, is not marked but named on the label. This
slide and the one following below contain the plankton sample that Hustedt
received from Brockmann.
Isolectotype:
Jb/68. Nordsee, Holsteinische Kuste. Plankton.
The two following slides bear marked specimens named on index sheets. These
are not specimens illustrated by Hustedt:
267/6. Hamburger Sand. Leybucht. 123-
Finder: 46O.2.
267/22. Leybucht. 336. Leysand.
Finder: 557-8. See p 523 for an addendum.

252
102-7 Rhaphoneis mimitissima Hustedt Plate 374/10-16
Op 102, p 599, f H-15-
The taxon is nowhere marked or named, for which reason a slide containing
material cited in the protologue is here chosen as lectotype:
267/48. Memmert. 12346. Verlandungszone.
The species is fairly frequent.
N.B. This taxon has one labiate process on each apex, in a diagonal
position (counterclockwise when looking on a valve outside). - According.
to our newer understanding of the genus Rhaphoneis this taxon belongs into
the genus Delphineis G.W. Andrews:
Delphineis mjucrutissima (Hustedt) Simonsen, nov. comb., synonym Rhaphoneis
minutissima Hustedt, op 102, p 599, f 14-15.
102-8 Cocconeis tenuis Hustedt Plate 375/1-8
Op 102, p 602, f 16-17.
The illustrated specimen, the holotype, is marked and named on the index
sheet of the following slide:
267/22. Leybucht. 336. Leysand.
Finder: 405-1.
Further slide:
267/48. Memmert. 12346. Verlandungszone.
Marked, unnamed specimen.
Finder: 283.3.
N.B. The two specimens in the collection are both single valves - both
raphe valves - and not "entire frustules" as stated by Hustedt. The
strongly radial structure in the axial/central area which Hustedt also
•, observed, are not areolae but is the sculpture of the inner valve surface.
Hustedt's figures 16 and 17 must therefore be combined in order to render
a more faithful illustration. Quite recently we found a third valve in
a plankton sample from the Weser mouth (slide 447/51• Deutsche Bucht,
Weser. 29.lO.i984. 53°55'N, 7°50*E, finder position 317-5). This is also
a raphe valve. The reader can easily see that the raphe systems of these
three valves have an excentric position which places this taxon in the
genus Anorthoneis Gruncv. A closer look reveals that the taxou is conspe-
cific with tx 148—I3 Anorthoneis tenuis Hustedt. This latter taxon, in
turn, is based on a single rapheless valve.t The combination of both taxa
represents the true situation, a transfer of the North Sea specimens to
Anorthoneis is superfluous, because even the specific epithets happen to
be identical.
102-9 Cocconeis pseudograta Hustedt Plate 375/9-14
Op 102, p 604, f 18-20
Hustedt failed to record this taxon by its name. He also failed to give
any locality where he found the species. We found two slides with marked
specimens which can be combined with what he considered as Cocc.
pseudograta. One of these contains the famous material from Grip, and there is
one rapheless valve marked by a circle and another rapheless valve just
outside this same circle. Because of the world-wide distribution of this
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*:
253
material (e.g. in the collection of Cleve & Moller) the following slide
is designated here as neotype:
Zt4/62. Grip, Norwegen. 1.
Finder: 498-3-6.
The other slide:
M2/99* S. Pietro.
Finder: 466.6; 585-4.
N.B. Hustedt erroneously declared this taxon as "nov. nom.", but he
actually described a new species. - This taxon is included in the "Kiesel-
algen" of the Rabenhorst Flora, op 79, p 341, f 795, under the name Cocc.
grata A. Schmidt. The three illustrations used by Hustedt in op 102 were
first published there and supposed to represent this latter species.
102-10 Cocconeis peltoides Hustedt Plate 376/I-IO
Op 102, p 606, f 23-27.
The taxon is nowhere recorded by name, but there are marked specimens on
one slide which is therefore taken as lectotype:
391/54. Memmert. 12341- Sandplate.
Finder: 341-1; 403-5; 408.5; 409.7.
A fairly large specimen was found marked - unnamed - on the following
slide:
51/64- Emsmundung. 120.
Finder: 527-8.
N.B. Several trials to resolve the structure of the raphe valve were
made, but all remained virtually unsuccessful. Hustedt's illustration of
the raphe valve (his f 23) is certainly incorrect.
102-11 Achnanthes linkei Hustedt Plate 377/1-9
Op 102, p 607, f 28-32.
Three slides with marked specimens exist. Of these the following is chosen
as lectotype:
05/60. Wangerooge. Watt, l.a.l.
Name on index sheet.
Finder: 341.2-5; 464-7; 493-1-4.
Isolectotypes:
Jb/92. Wangerooge. Watt, l.a.2.
Name on the label.
Finder: 468.4; 491.4-7-
N18/18. Wangerooge. Watt, l.a.3-
Name on index sheet.
Finder: 410.5-6; 557-1-
N.B. The lateral areas of the rapheless valves may also be missing,
particularly in lanceolate, narrow specimens which could be verified in
Hustedt's slides nos. 252/6I-63 with material from Juist, Sandwatt (sample
J 1), which is also cited in the protologue.

254
102-12 Achnanthes gibbosa Hustedt Plate 376/11-14
Op 102, p 609, f 33-34-
Holotype:
267/28. Leybucht. 10302. Leysand.
Marked specimen named on index sheet.
Finder: 439.5-8.
N.B. The striae of the rapheless valve are crossed and thus interrupted
by a longitudinal rib.
102-13 Achnanthes lemmermannii var. obtusa Hustedt Plate 376/15-20
Op 102, p 609, f 37-38.
There are two slides with one marked specimen each. On the one is a
specimen which is named on an index sheet, but the locality is not cited in
the protologue. The other slide is from a locality named in the protologue,
the marked specimen is evidently the i-type of f 37-38, but the taxon's
name appears nowhere. This latter specimen is, nevertheless, here termed
the holotype:
51/60. Emsmundung. Mittelplate. 155■
Finder: 310.6-9.
the other slide:
267/29. Leybucht. 27891. Leysand.
Finder: 406.7-8.
102-14 Diploneis aestuarii Hustedt Plate 376/21-26
Op 102, p 612, f 41-42.
There are three slides with marked specimens. Only one is named (on the
index sheet) and is therefore taken here as lectotype:
Jb/92. Wangerooge. Watt, l.a.2.
Finder: 525-3-6.
The other slides:
5l/l6. Ems, nahe Bingumer Sand. 376.
-FirdeF:- 311.6^9". - - ...
2o7/76b. Dove Tief. Tonne D2. b. " ""*'
Finder: 433-5-8.
102-15 Stauroneis gregorii forma linearis Hustedt Plate 378/1-2
Op 102, p 616, f 46.
Holotype:
267/20. Hamburger Sand. Leybucht. 14491.
Marked, unnamed specimen.
Finder: 585-2-5.
N.B. The structure of the apical part of the valve is different from
Hustedt's illustration. There is no striation along the length of the
terminal raphe fissure. The striation stops abruptly, thus giving the
impression of pseudosepta at low magnification (see t 378/2).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler.
255
102-16 Stauroneis gregorii var. densestriata Hustedt Plate 378/3-7
Op 102, p 616, f 43-45-
Holotype:
267/71b. Norder Tief. CYD.
Marked, unnamed specimens.
Finder: 286.1; 349-8; 463-3-
N.B. In op 166, p 789j f 1134, Hustedt raises this taxon to species
rank under the name Stauroneis dubitabilis Hustedt.
102-17 Stauroneis undata Hustedt Plate 378/8-10
Op 102, p 616, f 47.
Holotype:
51/79- Emsmundung. Hubertgat. 240.
Marked specimen named on the label.
Finder: 500.7-
102-18 Stauroneis ignorata Hustedt Plate 377/10-11
Op 102, p 620, f 48-52.
This is not a "new species" in the strict sense. Hustedt did not care to
record any diatom by this name, nor did he mention a locality from where
his specimens come. For the time being I include micrographs of marked
specimens which on the label are named "Stauroneis biundulata CI. Eul.",
of which our taxon is a synonym. The slide:
Nal/24. Suistamonjarvi. 17 m. 6.7-31- Finnland. b.
Finder: 468.7; 618.5. See p 523 for an addendum.
102-19 Navicula abscondita Hustedt Plate 378/11-17
Op 102, p 620, f 53-54-
A slide with Linke no. 31 material has two marked specimens in the same
circle, named "Nav." on the index sheet. Contrary to Hustedt's statements
the taxon is far less frequent. Therefore another slide with material from
a locality also mentioned in the protologue-, with- marked and unnamed
specimens, is selected as lectotype. The taxon is much more frequent on this
slide with more than one specimen in each circle:
267/48. Memmert. 12346. Verlandungszone.
Finder: 256.9J 349-1-2.
The other slide:
267/3. Hamburger Sand, Leybucht. 31-
Finder: 409-1 •■
102-20 Navicula abstrusa Hustedt Plate 379/1-7
Op 102, p 621, f 55-56.
Holotype:
'V

256
267/19* Hamburger Sand. Leybucht. 14491-
Marked, unnamed specimens.
Finder: 611.1 (i-type f 56); 618.4-5 (i-type f 55)-
N.EL So far I have been unable to verify the presence of a raphe system
in the specimen at 611.1, and I have strong doubts that the two little
silica concretions - or whatever they are - represent the central pores
of a raphe in the specimen at 6l8.4-5-
102-21 Navicula aequorea Hustedt Plate 379/8-14
Op 102, p 621, f 57-60.
Of the three slides with marked specimens the following is proposed as
lectotype:
N12/36. Leybucht. 10301. Leysand.
Name on the label.
Finder: 339.5; 615.4.
Paralectotype:
267/28. Leybucht. 10302. Leysand.
Name on index sheet.
Finder: 440.8-9.
Further slide:
391/54- Memmert. 12341. Sandplate.
Marked, unnamed specimen.
Finder: 255.7.
102-22 Navicula biskanterae Hustedt Plate 379/15-19
Op 102, p 623, f 8O-85.
No slide with material from the localities quoted in the protologue
contains marked or named specimens of this taxon. It is moderately frequent
on the following slide which is therefore selected as lectotype:
397/75- Memmert. 12342. Sandplate.
N.B. In op 171j p 271j Hustedt changed the original spelling biskanteri
into biskanterae, because the taxon is dedicated to a lady.
102-23 Navicula bremeyeri Hustedt ■ Plate 377/12-17
Op 102, p 623, f 70-72.
Of the two slides with marked specimens none is with the taxon's name,
the following lectotype is selected:
397/75- Memmert.' 12342. Sandplate.
Finder: 318-4; 411.1; 433-4-7-
The other slide:
N18/73. Wangerooge. Watt. l.b.
Finder: 344-6.
102-24 Navicula bremeyeri var. rostrata Hustedt Plate 377/18-20.
Op 102, p 624, f 73-74-
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*:
257
The taxon is nowhere named. Of the two slides with marked specimens the
following is proposed as lectotype:
397/75- Memmert. 12342. Sandplate.
Finder: 287-4-7-
Paralectotype:
267/51. Memmert. 12349- Verlandungszone. a.
Finder: 314-9-
N.B. I had a slight suspicion that this taxon and the nominate variety
might be related to or even be identical with tx 135-23 Achnanthes solea
Hustedt. I can now confirm that the specimen at 314-9 consists of two
identical valves, each with raphe and the central stigma, so that the
affinity with Navicula is without doubt, at least of this tx 102-24. The
optical separation of the two valves of a frustule is extremely difficult
here without applying interference contrast. Unfortunately the other
specimens of the two taxa are single valves only so that certainty could
be achieved for this one specimen only. - See p 523 for & further addendum.
102-25 Navicula damans Hustedt Plate 379/20-22
Op 102, p 624, f 75-77-
Holotype:
391/54. Memmert. 12341. Sandplate.
Marked, unnamed specimens.
Finder: 3H-6 (i-type f 77); 348-5-8 (i-type f 76); 379-2-5 (i-type f 75)-
102-26 Navicula consentanea Hustedt Plate 379/23-27
Op 102, p 625, f 98-100.
The taxon is nowhere marked or named. It occurs abundantly in the material
quoted in Hustedt's protologue. Of the slides with this material the
following may be the lectotype:
267/29. Leybucht. 27891. Leysand".
102-27 Navicula digitoradiata forma linearis Hustedt Plate 3^0/7-8
Op 102, p 626 (m? illustration).- —
There are two slides with marked specimens which are named on the relevant
index sheets. Of these the following shall be the lectotype:
260/14. Wangerooge. Watt. 2.b.2.
Finder: 555-4-5-
Paralectotype: l
05/60. Wangerooge. Watt. 1.a.1.
Finder: 530.9-
102-28 Navicula digitoradiata var. rostrata Hustedt Plate 380/1-6
Op 102, p 627, f 96-97-
Holotype:

258
N13/96. Norder Tief. CXR.
Marked specimens named on the label.
Finder: 374.6; 409-7; 440.7-8} 497.9; 500-7-8.
N.B. Krammer & Lange-Bertalot (Bacillariophyceae 2 (l), p 109, 1986)
synonymize this taxon with the nominate variety. This procedure appears
to me rather dubious, a specific separation would have been much more
justified.
102-29 Navicula dilucida Hustedt Plate 379/28-32
Op 102, p 627, f 104 (?) 105-107-
Hustedt did not care to mark or to record this taxon by name. Therefore
the following lectotype is designated:
267/47a. Memmert. 12342. Sandplate.
The taxon is frequent on this slide.
102-30 Navicula diserta Hustedt Plate 379/39-43
Op 102, p 627, f 78-79*
There are two slides with marked, unnamed specimens. As lectotype is here
chosen:
N12/36. Leybucht. 10301. Leysand.
Finder: 339-5-
Further slide:
397/75- Memmert. 12342. Sandplate.
Finder: 376.1 (2 specimens).
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 84, 1985) include this
taxon as synonym in Navicula perminuta Grunow.
102-31 Navicula flagellifera Hustedt Plate 380/9-14
Op 102, p 628, f 94-95-■
Two slides bear marked specimens of which the following is selected here
as lectotype:
7.6-7-/9- Hamburger Sand, Ley-Bucht. 130.
Name on the index sheet.
Finder: 400.2-5 (this must be the i-type of f 94^95); 433-5-
Further slide:
391/54. Memmert. 12341. Sandplate.
Marked, unnamed specimen.
Finder: 613-1-
102-32 Navicula groschopfii Hustedt
Op 102, p 631, f 102-103.
Of the two slides found with marked specimens
following is selected as lectotype:
Plate 379/33-38
- both not named - the
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwesrambler.ru
259
391/54. Memmert. 12341. Sandplate.
Finder: 254-6.
Paralectotype:
397/75. Memmert. 12342. Sandplate.
Finder: 283.3~6; 411.1 (2 specimens).
102-33 Navicula manifesta Hustedt Plate 380/15-16
Op 102, p 633, f 101.
Holotype:
267/40. Leybucht. 10434- Schweinsrucken.
Marked, unnamed specimen.
Finder: 432-3-6.
N.B. VanLandingham (Catalogue 5, P 2660, 1975) renamed this taxon:
Navicula utlandshoerniensis VanLandingham, because of Nav. manifesta
Marsson 1900.
102-34 Navicula pavillardii Hustedt Plate 381/I-IO
Op 102, p 635, f 86-90.
On the slides from the North Sea coast we found only one marked, unnamed
specimen, whereas the slides from the Etang de Thau contain more marked
but also unnamed specimens. Since this latter locality is included (as
the first find) in the protologue, it is selected as type locality, the
lectotype being:
6l/57. Etang de Thau, Sudfrankreich. 2.a.
Finder: 284-3 (2 specimens); 318.6.
Paralectotypes:
6l/51- Etang de Thau, Sudfrankreich. l.a.
Finder: 525-6.
6l/54- Etang de Thau, Sudfrankreich. l.b.
Finder: 407-4*
Further slide:
397/75- Memmert. 12342, Sandplate.
Finder: 411.1.
102-35 Navicula salinicola Hustedt Plate 38l/ll-20
Op 102, p 638, f 61-69.
This taxon is nowhere recorded by name or marked. The North Sea specimens
differ markedly from Hustedt's illustrations, and I am certain that they
represent valves from the salt plant of Bad Sooden, mentioned in the
protologue. A slide with these inland specimens is therefore taken as the
lectotype:
N7/80. Sooden an der Werra. Gradierwerk. Kr. 3562.
The taxon is fairly frequent.
The North Sea specimens differ from those in the above material in that
they are much more radial in the central portion. A small number of

260
specimens from the following slide mentioned in the protologue is here
included:
267/22. Leybucht. 336. Leysand.
The taxon is rather frequent.
102-36 Navicula solutepunctata Hustedt Plate 382/1-8
Op 102, p 638 (no illustrations, which, according to footnote 5 were
accidentally left out and were soon to be included in the "Kieselalgen").
Of the three slides with marked specimens two have the taxon's name on
their index sheets, whereas on the third it is only named "Nav." The former
two are both from Norway, of which I choose as lectotype:
201/23. Norwegen. Asevag. 4. T. 1.
Finder: 222.9 (3 specimens); 495-4-
Isolectotype:
20l/25a. Norwegen. 4. T. b. 1.
Finder: 552.8-9-
Further slide:
267/22. Leybucht. 336. Leysand.
Finder: 289.6-9.
N.B. The illustrations followed in op 175, p 646, f 1647, where this
taxon was also declared as "nov. spec." (tx 175-12). The description there
is litterally the same as in op 102. As locality is only given "Asevag"
with no mention of the North Sea occurrence.
102-37 Neidium opulentum Hustedt Plate 382/9-IO
Op 102, p 642, f 108.
Holotype:
5l/l. Ems, bei Papenburg. 197-
Marked, unnamed specimen.
Finder: 409-5-6-
102-38 Nitz3chia dubiiformis Hust edt P] ate 38 3/1-7
Op 102, p 658, f lli-112.
Holotype:
267/6. Hamburger Sand. Leybucht. 123.
Marked specimens named on index sheet.
Finder: 347-3; 348.5-8.
N.B. Hustedt resolved the striae only near the centre. We were able
to photograph and to count 43-44 striae in 10 urn.
102-39 Nitzschia vasta Hustedt Plate 382/11-12
Op 102, p 660, f 119-
Holotype:
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
261
51/4. Ems, bei Hilkenburg. 464.
Marked, unnamed specimen.
Finder: 280.5-8.
102-40 Nitzschia linkei Hustedt Plate 384/1-5
Op 102, p 661, f 114-
Holotype:
267/12. Hamburger Sand. Ley-Bucht. 226.
Marked, specimens named on index sheet.
Finder: 312-5-6 (i-type); 373-6-9-
Further slides with marked, unnamed specimens:
267/3. Hamburger Sand, Leybucht. 31-
Finder: 614-1<
391/54. Memmert. 12341. Sandplate.
Finder: 406.4.
102-41 Nitzschia frustulum var. permimrta forma
Op 102, p 662, f 123-
Holotype:
252/58. Juist, Heller. L 201.
Marked, unnamed specimen.
Finder: 494-3-
102-42 Nitzschia laevis Hustedt Plate 385/IO-I8
Op 102, p 662, f 116-118.
There are five slides with marked specimens, all from different localities
or samples. Two of these are with the taxon's name on their index sheets,
and of these the following is selected as lectotype:
267/3. Hamburger Sand, Leybucht. 31.
Finder: 281.2-5-
Paralectotype:
267/12. Hamburger Sand. Leybucht."226.
Finder: 345*3-6.
Further slides, specimens all unnamed:
267/49. Memmert. 12346. Verlandungszone.
Finder: 587-3-
5l/l. Ems, bei Papenburg. 197-
Finder: 587-1--
51/13- Ems. Leerort. 475-
Finder: 432.3-6.
N.B. Hustedt could not discern the structure. We now succeeded in
resolving the striae, they are already perceivable in brightfield, their
density amounts to 37 striae in 10 um only.
constricta Hustedt
Plate 382/13-14

262
102-43 Nitzschia pseudocommunis Hustedt Plate 382/21-23
Op 102, p 662, f 122.
Holotype:
51/13. Ems. Leerort. 475*
Marked, unnamed specimen.
Finder: 403-1-2.
102-44 Nitzschia aequorea Hustedt Plate 382/15-20
Op 102, p 663, f 120.
Holotype:
267/61. Hauener Hooge. 12882.
Marked, unnamed specimen.
Finder: 556.3-
There is another slide containing this taxon. It was made in 1940, one
year after the publication of op 102:
269/97. Nelimersiel. 72. Schlicksandwatt. b.
Marked specimens named on the label.
Finder: 350.2-5; 438-9-
102-45 Nitzschia subfrustulum Hustedt Plate 384/6-7
Op 102, p 663, f 121.
Holotype:
267/12. Hamburger Sand. Ley-Bucht. 226.
Marked specimen named "Ni." on index sheet.
102-46 Nitzschia accedens Hustedt Plate 383/8-10
Op 102, p 663, f 115.
Holotype:
51/13. Ems. Leerort. 475-
Marked, unnamed specimen.
- Fiuder l' 411-9-
102-47 Nitzschia subcapitellata Hustedt Plate 385/1-9
Op 102, p 663, f 109 (110?).
Holotype:
5l/l. Ems, bei Fapenburg. 197-
Marked, unnamed specimens.
Finder: 285.2-5 (? I am not certain that this specimen belongs here);
467.7-8 (i-type f 110?); 549-9 (i-type f 109, right?).
Further slide:
51/4. Ems, bei Hilkenburg. 464.
Marked, unnamed specimen.
Finder: 289.8 (i-type f 109, left?).
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
263
Op. 104. A. Schmidts Atlas der Diatomaceenkunde, Heft 109-112, t 433-448,
1940.
104-1 Euodia udiensis Hustedt Plates 386/1-3, 387/1-2
op 104, t 434/24-25.
Validating description: Valves triangular with two convex sides enclosing
a concave side, thus forming" two acute angles which
are furnished with pseudocelli. The length between
these two "poles" is about 60-90 um.
Two single mounts, both unnamed, contain the two specimens. As lectotype
may serve:
Hs/5- Udi, Russland.
I-type f 25.
Isolectotype:
Hs/4. Udi, Russland.
I-type f 24,
N.B. In the explanation of plate 434 in op 104, under figs 13-16
representing Triceratium semicirculare Brightwell, Hustedt stated correctly
that this latter species and his new taxon (i.e. tx 104-1) cannot be
retained or placed in the genus Triceratium. Therefore he reintroduced
the old genus Euodia J.W. Bailey ex Ralfs in Pritchard and placed Bright-
well's and his own new species in Euodia. Unfortunately the genus Euodia
with E. gibba J.W. Bailey ex Ralfs in Pritchard is a synonym of Hemidiscus
Wallich. In addition, Euodia J.W. Bailey ex Ralfs in Pritchard l86l is
a younger homonym of Euodia J.R. & G. Forster (Char. gen. pi. 1776). The
name as applied by Hustedt is thus doubly invalid and a new genus for the
two taxa in question has to be introduced:
Flexibiddulphia Simonsen, novum genus.
A new genus of the Biddulphiaceae. Its most important difference from the
genus Biddulphia Gray is the strongly bent apical axis which results in
a nearly triangular, arrowhead-like, outline with two convex sides - both
combined representing the dorsal side - and a concave ventral side. Labiate
processes, if any, appear to be situated near the valve centre. One pseud-
ocellus is located at each of the more acute ends, mainly limited to the
ventral mantle, bi't occupying a considerable space. Sc far only fossil
■members of this genus are known. _
Generitype: Flexibiddulphia semicircularis . (Brightwell) Simonsen (below).
The following transfers result from the establishment of this new
genus:
1. Flexibiddulphia semicircularis (Brightwell) Simonsen, nov. comb.,
synonym Triceratium semicirculare Brightwell (Qu. J. Microc. Sci. 1,
p 252, t 4/21, 1853).
2. Flexibiddulphia udiensis (Hustedt) Simonsen, nov. comb., synonym Euodia
udiensis Hustedt, op 104, t 434/24-25, 1940.
N.B. As Hustedt wrote already in the legend of t 434, the relations
between the two taxa remain to be more fully investigated. There is some
indication that both are conspecific, although they may represent different
varieties.

264
104-2 Hemidiscus rotundus forma gibbosa Hustedt Plates 387/3-4, 388/1-3
Op 104, t 437/3-4-
Validating diagnosis: Differt a varietate nominata valvis gibbosioribus.
The two i-types are singly mounted onto one slide, which, however, does
not bear the taxon1 s name. Nevertheless, this must be considered as the
holotype:
Hs/21. Abashiri, Japan.
Isotype:
Hs/l7. Abashiri, Japan.
A slide with three more picked valves.
104-3 Stictodiscus californicus forma concentrica Hustedt Plate 389/1-4
Op 104, t 444/11-13-
Description included in plate explanation.
The taxon occurs, unnamed, on two slides of which the following shall be
the lectotype:
C3/53- Nancowry.
This is a single mount, i-type f 12-13.
Isolectotype:
C2/2. Nancowry.
This is a slide with four picked valves of which one is the i-type of
f 11. The other valves represent different taxa.
104-4 Stictodiscus traanii forma trigona Hustedt Plate 390/1-3
Op 104, t 446/4.
Validating diagnosis: Differt a typo valvis triangularibus.
Holotype:
C3/28. Barbados.
A single mount with the i-type.
N.B. One labiate process is situated near each corner.
104-^ Stictodiscus hardmanianus forma subquadrata Hustedt Plate 391/l-2
Op 104, t 446/5.
Description included in plate explanation.
Holotype:
C2/32. Santa Monica.
A single mount named "Stictodiscus Hardmanianus" on the label.
N.B. Hustedt misses the central "circle of pores", i.e. labiate
processes. A very small number (apparently five) of labiate processes is
located in submarginal positions around the valve.
104-6 Stictodiscus similis Hustedt Plates 392/1-4, 393/1-3
Op 104, t 447/9-11.
Description included in plate explanation.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler. ru
265
The three illustrated specimens are singly mounted on three slides. They
are unnamed except C2/56 which has "Stictodiscus parallelus" on its label.
Lectotype:
C3/93- Campeche Bay.
I-type f 11.
Isolectotypes:
C3/62. Campeche Bay. C2/56. Campeche Bay.
I-type f 10. I-type f 9-
N.B. Near each of the corners there is a labiate process, in the
specimen in C3/93 there are two of these.
Op. 106. Contributions (pp 272 and 274) in: G. Krasske, Die Kieselalgen
des chilenischen Kiistenplanktons. Arch. Hydrobiol. 38, 260-287, 1941.
106-1 Pseudohimantidium Hustedt & Krasske
Op 106, p 272.
106-2 Pseudohimantidium pacificum Hustedt & Krasske Plate 394/1-8
Op 106, p 272, t 5/8-
Holotype:
La/51. Pacific, Plankton. 20°39'S, 70°20'tt. Brutnetz.
Marked specimens named on the label.
Finder: 553.8 (i-type); 664.5-8.
Isotype:
La/52. Pacific, Plankton. 20°39'S, 70°20'W. Kr. 4572.
Marked specimens named on the label.
Finder: 229.8-9; 436.9; 466.2; 520.1; 527-2; 615.7-
N.B. The magnification of Hustedt's drawing must be about xlOOO and
not x2000, as is noted (in Hustedt's hand) on the plate which presents
a reduced figure.
The i-type is in an oblique position, i.e. one of the two ends is
nearer to the observer than the other. This may have contributed to
Hustedt's complete misinterpretation of the structure and symmetry of this
species which was discussed in more detail by Simonsen (Nova Hedwigia ,
Beiheft 31, 377-394, 1970).
106-3 Pleurosigma chilense Hustedt & Krasske Plate 395/1-4
Op 106, p 274, t 5/7.
The taxon is nowhere marked or otherwise recorded. In addition, there is
total confusion about the authors' records and the occurrence of this
species. In the collection there are three slides (nos. 294/53a, 53b, and
54a) labelled, "Calbuco, Chile. Obf. Plankton. 27.11.37." However,
Pleurosigma chilense does not occur on these slides which allegedly contain
the original material ("frequent"). In addition, all slides were made in

266
1954j after the publication. - There is another series of slides, nos.
297/56-60, mounted 1941, labelled "Calbuco, Chile, Plankton. Kr. 4310"
(Kr. = Krasske). The glass vial containing the corresponding material
sample reads on the label, "Am 461. Calbuco, Chile., PI. 27.11.28. Kr.
4310." It is this sample in which our taxon occurs rather frequently.
Therefore the following slide is here selected as lectotype:
297/56. Calbuco, Chile, Plankton. Kr. 4310.
Isolectotypes:
297/57. Calbuco, Chile, Plankton. Kr. 4310.
297/58. Calbuco, Chile, Plankton. Kr. 4310.
297/59. Calbuco, Chile, Plankton. Kr. 4310.
297/60. Calbuco, Chile, Plankton. Kr. 4310.
N.B. The species possesses rather wide (broad) girdles which have here
collapsed during preparation. The specimens on the slides lie generally
with one valve immediately on top of the other, both more or less damaged.
Op. 107. Aerophile Diatomeen in der nordwestdeutschen Flora. Ber. Deutsch.
Bot. Ges. 60, 55-73, 1942.
107-1 Navicula caduca Hustedt Plate 396/1-2
Op 107, p 63, f 4.
Holotype:
Nl/84. Hasbruch, Bach b. d. Hutte, Moos.
Marked specimen named on the label.
Finder: 320.5-6.
N.B. In op 171, P 169j Hustedt synonymizes this taxon with and includes
it in Navicula atomus (Kutzing) Grunow.
107-2 Navicula destricta Hustedt Plate 396/10-11
Op 107,-p" 64, f 22.
Holotype:
Nl/84. Hasbruch. Bach b.d. Hutte, Moos.
Marked specimen named on the label.
Finder: 501.6.
107-3 Navicula egregia Hustedt Plate 396/3-9
Op 107, p 64, f 26.
Holotype:
N2/80. Hasbruch. Jagdhutte, Bach. Lebermoos.
Marked specimens named on the label.
Finder: 167-5-6; 399-4 (it must be doubted that this specimen really
belongs here); 550.6-9-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
267
107-4 Navicula evanida Hustedt Plate 396/12-18
Op 107, p 66, f 20-21.
Of the two slides with the taxon's name on their labels the following is
chosen as lectotype:
N2/88. Wiimmingen. Straftengraben. Lebermoos u. W. 2,12.34-
Finder: 464-7-8; 468.2-5; 495-1-
Isolectotype:
N6/12. Wummingen. Straftengraben. Moos u. W. 2.12.34-
Finder: 369-2.
107-5 Navicula importuna Hustedt Plate 396/21-31
Op 107, p 67, f 24-25-
There are three slides with the taxon's name on their labels and marked
specimens. Of these the following is designated as lectotype:
Nl/84. Hasbruch. Bach b. d. Hutte, Moos.
Finder: 501.7; 502.3; 591-3-
Paralectotypes:
N2/80. Hasbruch. Jagdhutte, Bach. Lebermoos.
Finder: 198.3; 370.1 ? (question mark by Hustedt).
N4/39- Hasbruch, Moos lib. Wasser b. d. Hutte. 1.
Finder: 436.8.
N.B. In op 171, p 254, Hustedt synonymizes this taxon with and includes
it in Navicula minuscula Grunow.
107-6 Navicula indifferens Hustedt Plate 396/32-44
Op 107, p 67, f 27-30.
Holotype:
N4/39- Hasbruch. Moos ub, Wasser b. d. Hutte. 1.
Marked specimens named on the label.
Finder: 338.6-9; 339.8 (3 specimens); 341.7; 342.8; 402.1; 428.3; 464.3-6;
519-5; 645-1.
N.B. Hustedt did not resolve the structure of this taxon- In our
micrographs we counted about 40 striae in 10 urn.
107-7 Navicula minusculoides Hustedt Plate 396/19-20
Op 107, p 68, f 5-
Holotype:
Nl/84. Hasbruch. Bach b. d. Hutte, Moos.
Marked, unnamed specimen (no space on the crowded label).
Finder: 378.9-
107-8 Navicula obscura Hustedt Plate 397/1-13
Op 107, p 68, f 9-11.
As lectotype is here selected:

268
N6/11. Hasbruch. Wasserrinne. Moos. 2.
Marked specimens named on the label.
Finder: .223.1-4 (2 specimens); 255-8; 282.8-9-
Paralectotype:
N2/80. Hasbruch. Jagdhiitte, Bach. Lebermoos.
Marked specimens named on index sheet.
Finder: 294-7 (2 specimens); 400.3"? (question mark by Hustedt).
N.B. In op 171 j p 240, Hustedt renames this taxon: Navicula parsura
Hustedty because of N. obscura Pantocsek 1908 and N. obscura Hustedt, op
89, t 403/25-26, 1936 (tx 89-40).
107-9 Navicula obsidialis Hustedt Plate 397/22-31
Op 107, p 68, f 1-3-
Among the three slides with marked specimens named on the labels the
following is selected as lectotype:
N6/12. Wummingen, Straflengraben. Moos u. W. 2.12.34-
Finder: 404-5; 434-5; 437-8-9-
Paralectotype:
N2/88. Wummingen, Straflengraben. Lebermoos ti. W. 2.12.34-
Finder: 349-2-5; 368.6-9.
Further slide:
Nl/84. Hasbruch. Bach b. d. Hiitte, Moos.
Finder: 347-3-6; 464-3; 500.7-8; 643-5; 645-5-6.
N.B. Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae,
p 69, 1985) recombines this taxon: Navicula fossalis Krasske yar.
obsidialis (Hustedt) Lange-Bertalot.
107-10 Navicula obsoleta Hustedt Plate 397/14-21
Op 107, p 69, f 12-16.
Holotype:
N2/80. Hasbruch. Jagdhiitte, Bach. Lebermoos.
Marked specimens named on the label.
Finder: 166.5; 2z6.9; 231-2; 294-7; 399-4, 430.2-3; 436.1-4; 645-4-5 (2
specimens).
107-11 Navicula subadnata Hustedt Plate 396/45-50
Op 107, p 69, f 6-8.
Holotype:
N2/80. Hasbruch. Jagdhiltte, Bach. Lebermoos.
Marked specimens named on index sheet.
Finder: 231.2; 400.3; 583-8-9-
107-12 Nitzschia aerophila Hustedt Plate 397/32-35
Op 107, p 70, f 46.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
269
Holotype:
N2/80. Hasbruch. Jagdhiltte, Bach. Lebermoos.
Marked specimens named on index sheet.
Finder: 370.1 (i-type); 399-4-
107-13 Nitzschia fossalis Hustedt Plate 397/36-37
Op 107, p 70, f 45-
Holotype:
N2/88. Wummingen, Straflengraben. Lebermoos u. W. 2.12.34.
Marked specimen named on the label.
Finder: 309-1-
(107-14 Stauroneis montana var. lauceolata Hustedt)
Op 107, p 72, f 48-49.
This taxon was erroneously designated as "nov. var." in op 107- It was
previously published, without illustration, in op 82, p 381. See tx
82-5.
Op. 108. Suflwasserdiatomeen des indomalayischen Archipels und der Hawaii-
Inseln. Intern. Revue ges. Hydrobiol. 42, 1-252, 1942.
108-1 Melosira simi lis Hustedt Plate 398/I-2
Op 108, p 8, f 1-2.
Holotype:
163/29. Luzon. Laguna de Bay. 180.
Marked specimen named on the label.
Finder: 283-3-6.
108-2 Melosira agassisxl var. malayensis Hustedt Plates 398/3-5, 399/1-4
Op 108, p 10, f 3-10-
Two slides have the taxon's name on their labels, the variety is almost
pure, unmarked. As lectotype is chosen:
A2/33. Possosee, Celebes. 88.
This is a Styrax mount.
<
Isolectotype:
A2/32. Possosee, Celebes. 88.
This slide is mounted in balsam.
N.B. This taxon was transferred to the genus Aulacoseira Thwaites by
Simonsen (Bacillaria 2, p 56, 1979): Aulacoseira agassizii var. malayensis
(Hustedt) Simonsen.

270
108-3 Cyclotella woltereckii Hustedt Plate 400/7-14
Op 108, p 16, f 11-13*
Holotype:
Acl/68. Buitenzorg, Java. Teich. 98.
Marked specimens named on the label.
Finder: 466.8; 467.l; 527-9; 586.8; 587.4; 706.2-5.
108-4 Rhizosolenia eriensis var. tenuis Hustedt Plate 400/1-6
Op 108, p 19, f 14-15.
Holotype:
G/84. Luzon. Teich. Bureau of Sc. 216.
Marked specimens named on the label.
Finder: 256.1; 284.6; 286.2; 290.8.
108-5 Fragilaria construens var. javanica Hustedt Plate 40l/l-6
Op 108, p 24, f 16-19.
The taxon is nowhere named or marked on the slides. It occurs very
frequently in sample no. 98 (Hustedt's no. 47), of which three slides were
mounted. Of these the following is designated as lectotype:
Acl/68.. Buitenzorg, Java. Teich. 98.
Isolectotypes:
163/1. Buitenzorg, Java. Teich. 98.
l63/52a. Buitenzorg. Java. Teich. 98.
108-6 Fragilaria lapponica forma lanceolata Hustedt Plate 401/7-12
Op 108, p 25, f 20-23.
The taxon is nowhere marked or named. As lectotype is chosen:
397/39a. Celebes. 71. Mahalone-See. 1.
108-7 Eunotia pseudoveneris Hustedt Plate 40l/l3-l8
Op 108, p 29, f 24-29.
As lectotype is selected:
397/37- Celebes. 64. Matano-See. g.
Marked specimens named on,index sheet.
Finder: 350.9; 492-9; 531-2-5.
Further slides, both with marked specimens named on index sheets:
397/40b. Towoetisee. 60.c
Finder: 316.7-8; 375-1-
397/42. Celebes 54- Towoeti-See. P..
Finder: 469-4-7; 554-1-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler. ru
271
108-8 Cocconeis cijogulata Hustedt Plates 40l/l9-20, 402/1-4
Op 108, p 33, f 30-33-
Of the three slides with marked specimens of this species I select as
lectotype:
Ml/69. Celebes. 71. Mahalone-See.
Marked specimens named on the label.
Finder: 344-8; 437-1-4; 439-3 (i-type f 30).
Isolectotypes:
Tl/62. Celebes. 71. Mahalone-See.
Name on the label.
Finder: 440.3 (i-type f 31)-
397/39a. Celebes. 71. Mahalone-See.
Marked specimens named on index sheet.
Finder: 376.8-9; 411-4; 432.4 (i-type f 32); 470.9 (i-type f 33); 496.2-5.
108-9 Achnanthes pseudolinearis Hustedt Plate 400/15-17
Op 108, p 39, f 49-53-
Holotype:
Ma2/68. Celebes. 68. Mahalone-See.
Marked specimens - several in same circle - named on the label.
Finder: 468.2-5.
108-10 Mastogloia recta Hustedt Plate 403/l-H
Op 108, p 42, f 54-58.
As lectotype is here designated:
397/40b. Towoetisee. 60.c. Celebes. 1.
Marked specimen named on index sheet.
Finder: 403-8 (i-type f 56-57).
Paralectotype:
X4/58- Towoetisee. 54- Celebes.
Marked specimen named on the label.
Finder:-498.8 (i-type f 55).
Further slides:
N4/43- Celebes. 64. Matano-See.
Marked specimen named on the label.
Finder: 284-3-6 (i-type f 58).
397/39a- Celebes. 71- Mahalone-See. 1. J
Marked specimens named on index sheet.
Finder: 400.5-8 (i-type f 54); 465-5-6.
108-11 Mastogloia subrobusta Hustedt Plate 404/1-4
Op 108, p 44, f 59-61.
There are two slides with marked specimens. Of,these the following is here
designated as lectotype:
i_
■>

272
397/49- Celebes. 64. Matano-See.
Marked specimen named on index sheet.
Finder: 197.2-5 (i-type f 59).
Isolectotype:
Tl/37. Celebes. 64. Matano-See.
Marked specimen named on the label.
Finder: 583-7 (i-type f 60-61).
The taxon's name appears also on the label of slide R2/43 (Celebes. 64,
Matano-See). However, the only Mastogloia marked on that slide belongs
to the following taxon and is actually the i-type of f 65-66. The ribs
enclosing the axial area, a character of tx 108-11, are missing in this
specimen.
108-12 Mastogloia malayensis Hustedt Plate 405/1-6
Op 108, p 45, f 62-66.
Holotype:
397/44b. Towoetisee..54. Celebes. K.
Marked specimens named on index sheet.
Finder: 407-8 (i-type f 62-64); 467-4-5-
Further slide:
R2/43- Celebes. 64. Matano-See.
Marked specimen erroneously named "Mastogloia subrobusta" on the label
but belonging here (cf. preceding taxon).
Finder: 290.7 (i-type f 65-66).
108-13 Frustulia hawaiensis Hustedt Plate 406/1-2
Op 108, p 47, f 67.
Holotype:
163/75- Tumpel, Hochland v. Kauai. Hawaii. H.39.
Marked, unnamed specimen..
Finder: 344-7-
N.B. In op 157, P 256, Hustedt synonymizes this taxon with and includes
it in Frustulia creuzburgensis (Krasske) Hustedt.
108-14 Anomoeoneis rhomboides Hustedt
Op-108., p 48, f 68.
Holotype:
397/47b. Wawontoa-See. Celebes. 74- 2.
Marked specimen named on index sheet.
Finder: 465-7.
108-15 Anomoeoneis longirostris Hustedt Plate 406/3-8
Op 108, p 48, f 70-73.
There are three slides with marked and named specimens of this taxon. As
lectotype is here designated:
Plate 405/7-8
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwej'rambler.
273
Nd/57- Towoeti-See. 60. Celebes.
Marked specimen named on the label.
Finder: 498.1-2.
Isolectotype:
397/40b. Towoeti-See. 60.c. Celebes. 1.
Marked specimen named on index sheet.
Finder: 434.6 (several specimens).
The taxon is frequent on the two above slides.
Further slide:
397/45b. Wawontoa-See. Celebes. 77- 1.
Marked specimen named on index sheet.
Finder: 439*6-9 (i-type f 70?).
108-16 Stauroneis pygmaea forma undulata Hustedt Plate 406/9-10
Op 108, p 51, f 75-
Holotype:
l63/36b. Luzon, Buhi-FluG. 210.
Marked, unnamed specimen.
Finder: 254.4-7-
N.B. To my knowledge this taxon was for the first time combined with
Stauroneis kriegeri Patrick by Simonsen (Schrift. Naturwiss. Vereins
Schleswig-Holstein 26 (2), p 116, 1953): Stauroneis kriegeri forma undulata
(Hustedt) Simonsen.
108-17 Navicula halophila forma tenuirostris Hustedt Plate 406/16-17
op 108; p 52, f 76.
Holotype:
l63/31b. Luzon, Teich. Bureau of Sc. 221.
Marked, unnamed specimen.
Finder: 432.6.
N.B. This specimen has 21 striae in 10 urn. - There remain strong doubts
that this taxon has anything to do- with Navicula halophila (Grunow) CI eve;
and it is symptomatic that Hustedt does not mention this "forma" in his
treatment of the species in the Kieselalgen (op 170, p 64). This taxon
is identical, however, with Navicula-vixvisibilis Hustedt (taxon 94-29,
op 94, p 230, t 17/2.). The striation is equally dense, 21 striae in 10
urn, the size - 46 um long, 17 urn broad - is almost identical. The raphe
construction is the same in that the central pores are slightly distant
from one another, and the terminal pores are positioned well away from
the apices at abcut the narrowest part of the valves. Hustedt did not
notice these peculiarities in tx 108-17 and misinterpreted most of the
structure of tx 94-29- He did, however, point to "a certain similarity"
of the two diatoms.
108-18 Navicula riparia Hustedt Plate-406/21-22
Op 108, p 52, f 77-78.
Of the two slides with marked but unnamed specimens the following may serve

274
as the lectotype:
l63/35a. Luzon. K 253- Dagatan-Sumpf.
Finder: 467.2.
Isolectotype:
163/35b. Luzon. K 253- Dagatan Sumpf.
Finder: 376.6-9.
108-19 Navicula seposita Hustedt Plate 406/11-15
Op 108, p 54, f 79-82.
Holotype:
397/39a. Celebes. 71. Mahalone-See. 1.
Marked specimens named on the index sheet.
Finder: 257.1; 347.6; 56O.6.
108-20 Navicula septata Hustedt Plate 407/1-9
Op 108, p 55, f 83-88.
There are five slides with marked specimens which are all named, either
on the labels or on index sheets. As lectotype is selected:
397/41. Towoetisee. 60. c. Celebes. 2.
Finder: 459-7 (i-type f 86); 497.1-2 (i-type f 85).
Isolectotype:
397/40b. Towoetisee. 60. c. Celebes. 1.
Finder: 340.6; 463-9 (i-type f 84).
Further slides:
N7/67. Celebes. 64. Matano-See. 397/39a. Celebes. 71. Mahalone-See.1.
Finder: 560-5-8. Finder: 436.5-
397/37- Celebes. 64. Matano-See.
Finder: 373-3-6; 466.9.
108-21 Navicula septata forma lancettula Hustedt
wp* jlwoj jj jj , i oy.
Holotype:
397/43- Celebes. 54. Towoeti-See. 0.
Marked specimen named "Nav. septata" on index sheet. .
Finder: 462.6-9.
108-22 Navicula subcontenta Hustedt Plate 406/18-20
Op 108, p 58, f 105-
Holotype:.
397/43- Celebes. 54- Towoeti-See. o.
Marked specimen named on the index sheet.
Finder: 376.1-2.
Plate 407/10-11
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
275
108-23 Navicula tignaria Hustedt Plate 407/12-14
Op 108, p 59, f 103-104.
Holotype:
397/42. Celebes. 54. Towoeti-See. P.
Marked specimen named on index sheet.
Finder: 370-5-
108-24 Navicula mucicoloides Hustedt Plate 407/15-19
Op 108, p 59, f 98-102.
Holotype:
X2/42. Luzon. Lyon, Tiimpel. 255-
Marked specimens named on the label.
Finder: 404.8; 440.5-8; 531.8-9; 676.2.
108-25 Navicula luzonensis Hustedt Plate 408/1-2
Op 108, p 59, f 106.
Holotype:
163/38. Luzon. Buhi Lake. 209.
Marked, unnamed specimen.
Finder: 500.6.
N.B. Lange-Bertalot & Rumrich (in Ross (ed.), Proc. 6th Diat. Sympos.,
p 136, I98l) synonymize this taxon with Navicula subminuscula Manguin.
108-26 Navicula subarvensis Hustedt Plate 408/3-7
Op 108, p 60, f 107-108.
Holotype:
163/38. Luzon. Buhi Lake. 209.
Marked, unnamed specimens.
Finder: 377-4-5 (i-type f 107); 502.9 (i-type f 108).
N.B. The striation is not as dense as given by Hustedt ("more than
40 in 10 u"; in his f 108 we counted as many as 54 striae in 10 jam). Cm
counts amount to 36 striae in 10 urn only, but the general shallov sculpture
of the structure renders the striae almost invisible.
108-27 Navicula disparata Hustedt Plate 407/20-22
Op 108, p 61, f 109.
Holotype:
397/37. Celebes. 64. Matano-See. g.
Marked specimen named on index sheet.
Finder: 555-1-
108-28 Navicula scabellum Hustedt Plate 407/23-29
Op 108, p 62, f 112-117-
There are four slides with diamond-marked specimens which are named on

276
corresponding index sheets. Of these the following is here chosen as
lectotype:
397/42. Celebes. 54- Towoeti-See. P.
Finder: 529-5-8 (i-type f 112 and 117).
Isolectotype:
397/43- Celebes. 54. Towoeti-See. o.
Finder: 494-1-
Further slides:
397/39a. Celebes. Jl. Mahalone-See. 1.
Finder: 314-3 (i-type f 113 and 116).
397/48. Celebes. 64. Matano-See. b.
Finder: 316.7-8.
108-29 Navicula divaricata Hustedt Plate 408/8-9
Op 108, p 67, f 121-122.
Holotype:
397/47b. Wawontoa-See. Celebes. 74. 2.
Marked specimens in the same circle, named on index sheet.
Finder: 586.5-8.
108-30 Navicula helvetica var. woltereckii forma rostrata Hustedt
Plate 408/10-12
Op 108, p -68, f 131-133.
As lectotype is here chosen:
397/40b. Towoetisee. 60. c. Celebes. 1.
Marked specimens named on index sheet.
Finder: 256.4 (i-type f 132); 343-1 (i-type f 133)-
Paralectotype:
397/40a. Celebes. 54- Towoeti-See. d.
Finder: 645.8 (i-type f 131)-
1O8-31 Navicula testata Hustedt Flate 409/1-3
Op 108, p 72, f 134-
Holotype:
163/69. Mullet-Pond, Kauai. 43- Hawaii-Archipel. ,
Marked, unnamed specimen.
Finder: 282.4-7-
N.B. Hustedt gives as length "about 48 p.", according to his
illustration it should be 46 urn, the holotype is actually 43 l^m long.
108-32 Navicula exigua forma undulata Hustedt Plate 409/4-6
Op 108, p 73, f 135-
Holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
277
397/39a. Celebes. 71. Mahalone-See. 1.
Marked specimens named on index sheet.
Finder: 524.7; 529-5-8.
108-33 Navicula insignita Hustedt Plate 409/7-11
Op 108, p 73, f 126, 139-141.
There is one slide bearing this taxon's name on its label. But the material
is from a locality not cited in the protologue, and the encircled specimen
is not illustrated in the paper. Furthermore, there are three slides
containing two samples from the same locality, cited in the protologue, with
marked, though unnamed, specimens, which are illustrated in the paper.
Of these three I select the following as lectotype:
l63/27a. Laguna de Bay, Luzon. 184.
Finder: 257-6 (i-type f 139).
Isolectotype:
l63/28a. Laguna de Bay, Luzon. 184.
Finder: 556.2-3 (i-type f 141).
Paralectotype:
l63/27b. Laguna de Bay, Luzon. 109-
Finder: 409-7 (i-type f 140).
Further slide:
N4/43. Celebes. 64. Matano-See.
Marked specimen named on the label.
Finder: 312.2.
108-34 Navicula subdecussis Hustedt Plate 410/1-7
Op 108, p 74, f 136-138.
Holotype:
l63/33a. Luzon, Manila, Reservoir II. 107.
Marked, unnamed specimens.
Finder: 319-6-9; 340.2; 348-5; 369-1; 430-9-
N.B. Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 66,
1985) recombines this taxon: Navicula decussis 0strup var. subdecussis
(Hustedt) Lange-Bertalot.
108-35 Navicula elegantoides Hustedt Plates 4H/I-4, 412/I-4
Op 108, p 76, f 142.
There are four slides containing marked, unnamed specimens of this taxon.
Of these the following slide is chosen as lectotype:
l63/36a. Luzon, Buhi-FluB. 210.
Finder: 409.7 (probably the i-type, although it is smaller than Hustedt's
illustration); 470.7.
Isolectotypes:
l63/36b. Luzon, Buhi-Flufi. 210.
Finder: 409-2; 431-7-

278
163/37. Luzon, Buhi-Flufl. 210.
Finder: 405-8; 437-6; 440.2; 462.8; 531-2-3-
Further slide:
l63/26a. Laguna de Bay. Luzon. 110. b.
Finder: 531.1.
N.B. Our micrographs confirm Hustedt's assumption of an affinity with
Navicula elegans ¥. Smith. The striae, '-'appearing homogeneous" to Hustedt,
consist of multiple rows of tiny puncta, more or less in quincunx
arrangement. The density of these puncta is about 40 in 10 |im.
108-36 Navicula genustriata Hustedt Plate 410/8-10
Op 108, p 77, f 143-144-
Holotype:
l63/60b. Teich auf Oahu, Hawaii. K.407-
Marked, unnamed specimen.
Finder: 411*5'*
108-37 Caloneis silicula forma intermedia Hustedt Plate 410/11-13
Op 108, p 78, f 145-146.
Holotype:
l63/33b. Luzon, Manila. Reservoir II. 107-
Marked, unnamed specimen.
Finder: 528.3 (i-type f 146).
108-38 Caloneis schumanniana var. rostrata Hustedt Plate 4H/5-7
Op 108, p 79, f 148-149.
There are two slides with marked specimens named on index sheets. Of these
the following is designated as lectotype:
397/37. Celebes. 64. Matanosee. g.
Finder: 491-9 (i-type f 148).
The o cLui' slide:
397/43• Celebes. 54. Towoeti-See,.o.
Finder: 281.7 (i-type f 149).
N.B. The dimensions of Hustedt's drawings are incorrect, our specimens
are smaller by about 4 um.
108-39 Caloneis malayensis Hustedt Plate 413/1-5
Op 108,.p 79, f 150-152.
The following lectotype is here selected:
Nbl/13. Wawontoa-See, Celebes. 74-
Marked specimens named on the label.
Finder: 351-9; 440.6-9 (i-type f 150).
Isolectotypes:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
279
397/47a. Wawontoa-See, Celebes. 74. 1.
Marked specimens named on index sheet.
Finder: 258.8; 321.6.
397/47b. Wawontoa-See, Celebes. 74. 2.
Marked specimen named on the index sheet.
Finder: 519-3 (i-type f 152).
108-40 Pinnularia divergens var. malayensis Hustedt Plate 414/1-2
Op 108, p 823 f 159.
Holotype:
P4/18. Uyaansee, Mindanao.
A single mount with the i-type, named on -che label.
Isotype:
P4/17. Uyaansee, Mindanao.
A mount with two picked specimens.
N.B. There is another single mount with the taxon's name on the label
(no. P4/19), but this was mounted earlier and is from Pernambuco.
108-41 Pinnularia woltereckii Hustedt Plate 414/5-6
op 108, p 85, f 161-163.
Holotype:
P4/13- Uyaansee, Mindanao.
A single mount, i-type f I63.
N.B. Our micrographs show the rather strongly undulating ("complex")
outer fissure of the raphe with which Hustedt's description is in
contradiction.
108-42 Pinnularia towutensis Hustedt Plate 414/3-4
Op 108, p 86, f 160.
Holotype:
397/41. Towoetisee. 60. c. Celebes. 2.
Marked specimen named on index sheet.
Finder: 552.3-
108-43 Pinnularia rigens Hustedt Plate 415/1-3
Op 108, p 89, f 173-
Holotype:
l63/52a. Buitenzorg. Java. Teich. 98.
Marked, unnamed specimen.
Finder: 491-1-4-
N.B. This specimen is, like many others in this paper, shorter than
given by Hustedt, 8l urn instead of 87-5 urn of Hustedt's drawing. There
can be no doubt, however, that this is the type.

280
108-44 Pinnularia brevicostata forma ventricosa Hustedt Plate 415/4-6
Op 108, p 89, f 171.
Of the two slides from Lake Danao, which both contain marked, unnamed
specimens, the following shall be the lectotype:
l63/49a. Leyte, Danao-See. 205.
Finder: 223.7-8; 314-3; 409-4; 459.1; 468.5; 583-3.
Isolectotype:
l63/49b. Leyte, Danao-See. 205.
Finder: 284-7; 436-3-
108-45 Pinnularia curtistriata Hustedt Plate 416/1-3
Op 108, p 90, f 172.
Holotype:
X5/43- Celebes. 64. Matano-See.
Marked specimen named on the label.
Finder: 351-9 (a split in the cover glass obscures one end).
108-46 Neidium iridis var. amphigomphus forma rostrata Hustedt
Plate 410/14
Op 108, p 92, f 176-177.
We found only one slide with a marked specimen which is named on the index
sheet. Although this specimen was not illustrated by Hustedt, it must be
considered as the holotype:
397/37- Celebes. 64. Matano-See. g.
Finder: 408.3.
108-47 Amphora towutensis Hustedt Plate 410/15
Op 108, p 96, f 178-179.
Holotype:
Xl/l6. Towoetisee. 54- Celebes.
Marked specimen named on the label.
Finder: 555-5-8.
N.B. Also this specimen is shorter by almost 10 % than is given by
Hustedt. '
108-48 Cymbella subalpina Hustedt Plate 417/1-13
Op 108, p 98, f 181-190.
There are, in all, ten slides with marked specimens, all named either on
the labels or on index sheets. As lectotype is therefore selected:
Tl/63. Wawontoa-See. Celebes.77.
Finder: 370.5-8; 435-4-7; 522.6-9-
Isolectotype:
397/45b. Wawontoa-See. Celebes. 77-1-
Finder: 315-5; 468.4.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
281
Paralectotypes:
397/46a. Wawontoa-See. Celebes. 75- 2..
Finder: 348.1; 400.3.
397/46b. Wawontoa-See. Celebes. 75- 1-
Finder: 374-1; 491.2-5-
397/47a. Wawontoa-See. Celebes. 74- 1-
Finder: 493-3-6-
397/47b. Wawontoa-See. Celebes. 74- 2.
Finder: 493-7-
Further slides:
Ma2/68. Celebes. 68. Mahalone-See^.
Finder: 521.2-5.
Tl/6l. Celebes. 68. Mahalone-See.
Finder: 616.3.
397/40b. Towoetisee. 60. c. Celebes. 1.
Finder: 529-1-
397/43- Celebes. 54- Towoeti-See. o.
Finder: 615.1-2.
N.B. VanLandingham (Catalogue 3, p 1236, 1969) renames this taxon:
Cymbella mendosa VanLandingham, because of C. subalpina Meister 1912.
108-49 Cymbella subalpina forma brevicostata Hustedt Plate 417/14-15
Op 108, p 98, f 180.
Holotype:
397/38. Celebes. 64. Matano-See. h.
Marked specimen named on index sheet.
Finder: 472.4-
N.B. VanLandingham (Catalogue 3, p 1236, 1969) recombines this taxon:
Cymbella mendosa forma brevistriata (Hustedt) VanLandingham, as consequence
of his action mentioned with the preceding taxon.
108-50 Cymbella subalpina forma a^iculata Hustedt — -- Plate 41?/l6
op 108, p 98, f 191.
Holotype:
397/43- Celebes. 54- Towoeti-See. o.
Marked specimen named on index sheet.
Finder: 523-4-
N.B. Van Landingham (Catalogue 3, p 1236, 1969) introduces the new
combination Cymbella mendosa forma apiculata (Hustedt) VanLandingham, in
consequence of his action discussed under tx 108-48.
108-51 Cymbella subalpina var. dubia Hustedt Plate 417/18-19
Op 108, p 98, f 192.
Holotype:

282
397/45a- Towoeti-See. 54- Celebes, i.
Marked specimen named on index sheet.
Finder: 466.4-7 (i-type)-
Further slide:
397/37. Celebes. 64. Matano-See. g.
Marked specimen named on index sheet.
Finder: 472.5-8.
108-52 Cymbella oahuensis Hustedt Plate 416/5-8
Op 108, p 98, f 193-195.
Holotype:. ^
163/65• Wahiawa, Oahu. Quelle. Hawaii. 36.
Marked, unnamed specimens.
Finder: 372.2-5; 412.4; 440.9.
N.B. Krammer (in Krammer & Lange-Bertalot, Naviculaceae, p 83, 1985)
recombines this taxon: Navicula oahuensis (Hustedt) Krammer. The
justification of this procedure is not based on the original material, though,
and will need better confirmation than provided there.
108-53 Cymbella cryptocephala Hustedt Plate 416/13-14
Op 108, p 99, f 196-200.
Only one specimen is marked and named and therefore the holotype:
397/43. Celebes. 54- Towoeti-See. o.
Finder: 6l6.1-4-
108-54 Cymbella tenuissima Hustedt Plate 416/15-24
Op 108, p 100, f 201-203-
As lectotype is here designated:
T2/14. Celebes. 68. Mahalone-See.
Many specimens in same circle named on the label.
Finder: 345-9.'
Faralectd'type:
Tl/62. Celebes. 71. Mahalone-See-.
Marked specimens named on the label.
Finder: 342.6-9 (2 specimens).
Further slide:
397/37. Celebes. 64. Matano-See. g.
Marked specimens named on index sheet.
Finder: 257-8; 284-5; 474-1-4-
108-55 Cymbella cesatii forma undulata Hustedt Plate 416/9-12
op 108, p 100, f 204-205.
There are two slides with marked specimens named on the- corresponding
index sheets. As lectotype is designated:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
283
397/46b. Wawontoa-See, Celebes. 75. 1.
Finder: 370.8; 372.2-5; 375-2 (i-type f 205).
Further slide:
397/41. Towoetisee. 60. c. Celebes. 2.
Finder: 399.6-9; 403-4-5.
108-56 Cymbella pseudodelicatula Hustedt Plate 418/I-6
Op 108, p 101, f 206-208.
As lectotype is here designated:
397/37. Celebes. 64. Matano-See. g.'
Marked specimens named on index sheet.
Finder: 345-3; 352.1.
Further slides:
Tl/62. Celebes. 71. Mahalone-See.
Marked specimen named on the label. '
Finder: 314.6.
397/41. Towoetisee. 60. c. Celebes. 2.
Marked specimen named on index sheet.
Finder: 6l5-7-
108-57 Cymbella leptoceroides Hustedt Plate 418/7-15
Op 108, p 102, f 209-213.
As lectotype is here selected:
Tl/65. Celebes. 63. Matano-See.
Marked specimen named on the label.
Finder: 436.6.
Paralectotype:
397/37. Celebes. 64. Matano-See. g.
Marked specimen named on index sheet.
Finder: 404.4.
Further slides, all with marked specimens named either on the labels or
on the corresponding index sheets':
397/36. Celebes. 68. Mahalone-See. 397/40b. Towoetisee. 60. c;* Celebes.1
Finder-: 525-2. Finder: 404-3-6.
S2/84. Towoetisee. 60. c. Celebes. 397/43- Celebes. 54. Towoetisee. o.
Finder: 289.4-7- Finder: 556.6.
108-58 Cymbella malayensis Hustedt Plate 419/I-6
Op 108, p 102, f 218-220.
The following slide is here designated as lectotype:
397/48. Celebes. 64- Matano-See. b.
Marked specimens named on index sheet.
Finder: 410.5; 463-3; 522..5.

284
Isolectotypes:
397/37- Celebes. 64. Matano-See. g.
Marked specimens named on index sheet.
Finder: 435-8^ 436.5-6; 558.5-8; 585-3-6.
Wl/74. Celebes. 64. Matano-See.
Marked specimens named on the label.
Finder: 313-7-8; 436-7; 642.1-2.
Further slide:
397/44b. Towoeti-See. 54- Celebes. K.
Marked specimen named on index sheet.
Finder: 314-9-
The species name occurs also on the label of slide N7/67 (Celebes. 64.
Matano-See), but the specimen encircled by Hustedt (finder position
432.2-5) does certainly not belong here.
108-59 Cymbella malayensis forma rostrata Hustedt Plate 419/7-8
Op 108, p 103, f 221.
Holotype:
Tl/37. Celebes. 64. Matano-See.
Marked specimen named on the label.
Finder: 612.6-9.
108-60 Cymbella bicapitata Hustedt Plate 420/1-3
Op 108, p 103, f 214-
Holotype:
397/44b. Towoeti-See. 54. Celebes. K.
Marked specimen named on index sheet.
Finder: 400-3-6.
N.B. The "stigma" observed by Hustedt appears to be only a more or
less isolated areola of the central stria, its optical reaction does not
differ at all from the striae. On the second valve of the holotype frustule
no such stigma or isolated areola could be verified.
108-61 Cymbella ampullacea Hustedt Plate 420/4-15
Op 108, p 104, f 215-217.
There are five slides containing marked specimens, all named either on
the labels or on index sheets, all are from the same sample. Of these the
following shall be the lectotype:
Wl/74- Celebes. 64. Matano-See.
Finder: 375-4; 559.1-2; 615-7.
Isolectotypes:
N7/67. Celebes. 64- Matano-See. Tl/37. Celebes. 64. Matano-See.
Finder: 432.2-5. Finder: 318.7-8.
397/37- Celebes. 64. Matano-See. g. X5/45- Celebes. 64. Matano-See.
Finder: 405-3; 494-7; 557-4; 560-5- Finder: 437-7-8.
iCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*:
285
Two slides contain marked specimens named "Cymb. ampulacea var.?" on the
index sheets:
397/40b. Towoetisee. 60. c. Celebes. 1.
Finder: 436.2.
397/41. Towoetisee. 60. c. Celebes. 2.
Finder: 313-2-3-
108-62 Cymbella (subturgida Hust. var?) wallaceana Hustedt Plate 421/1-9
Op 108, p 105, f 222-224-
There are eight slides with quite a number of marked specimens, all named
"C. subturgida var. wallaceana" on the labels or index sheets. Since the
illustrations cannot be connected with"*sufficient certainty with actual
specimens, the following is here selected as lectotype:
397/37- Celebes. 64. Matano-See. g.
Finder: 401.1; 409-8; 440.6; 499-4-7; 558.8; 613-3-
Isolectotype:
397/38. Celebes. 64. Matano-See. h.
Finder: 522.1.
Further slides:
397/42. Towoeti-See. P.
Finder: 342.7-8.
397/46a'. Wawontoa-See. Celebes. 75- 2.
Finder: 255-3-6; 280.1-4; 284.3; 313-5-8;. 495-2; 497-7-
397/47a. Wawontoa-See. Celebes. 74- 1.
Finder: 439-6.
397/36. Celebes. 68. Mahalone-See.
Finder: 436.2; 498-1-4-
Ma2/68. Celebes. 68. Mahalone-See.
Finder: 496.5-8.
Tl/6l. Celebes. 68. Mahalone-See.
Finder: 526.2-5-
108-63 Cymbella gracillima Hustedt ~ ~" Plate 422/1-8
Op 108, p 108, f 225.-230.
There are several slides with marked specimens named on labels or index
sheets; Of these the following is designated as lectotype:
X5/47. Wawontoa-See, Celebes. 77-
Finder: 316.6-9; 466.5-8.
Isolectotypes:
397/45b. Wawontoa-See, Celebes. 77-1-
Finder: 319-5 (a strongly corroded specimen).
Tl/63. Wawontoa-See, Celebes. 77*
Finder: 524-8.
Further slides:

286
P2/53* Wawontoa-See, Celebes. 74-
Finder: 404-5.
397/43. Celebes. 54- Towoeti-See. o.
Finder: 555-5-8.
Tl/62. Celebes. 71. Mahalone-See.
Finder: 496.7-8.
108-64 Cymbella woltereckii Hustedt Plates 422/9-13, 423/1-5
Op 108, p 108, f 231-234^
There is a dozen slides with marked specimens, all named on labels or index
sheets. Since no i-type could be identified, the following lectotyp*1. is
here chosen:
N4/43- Celebes. 64. Matano-See.
Finder: 4O8.I.
Isolectotypes:
X5/46. Celebes. 64. Matano-See.
Finder: 524-7-8.
Tl/37. Celebes. 64. Matano-See.
Finder: 464-5-
397/38. Celebes. 64. Matano-See. h.
Finder: 38O.8.
Further slides:
Nbl/13. Wawontoa-See. Celebes. 74-
Finder: 399.-5-
397/46a. Wawontoa-See. Celebes. 75- 2.
Finder: 524-5-6.
397/46b. Wawontoa-See. Celebes. 75-1.
Finder: 615-9-
Tl/63. Wawontoa-See. Celebes. 77-
Finder: 313-7-
Xa/92. Celebes. 68. Mahalone-See, r.
Finder: 469-5-
.Tl/61. Celebes. 68. Mahalone-See.
Finder: 374-8; 553-5-
S2/84- Towoetisee. 60. c. Celebes.
Finder: 436.2.
397/40b. Towoetisee. 60. c. Celebes. 1.
Finder: 523.8-9 (on the index sheet Hustedt termed this specimen "forma").
108-65 Cymbella woltereckii var. capitata Hustedt Plate 423/6
Op 108, p 110, f 235.
Holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
287
397/42- Celebes. 54- Towoeti-See. P.
Marked specimen named on index sheet.
Finder: 377-1-
108-66 Cymbella distinguenda Hustedt Plate 423/7-9
op 108, p 111, f 236-237*
r
Holotype:
397/37- Celebes. 64. Matano-See. g.
Marked specimen named on index sheet.
Finder: 470.1-2.
108-67 Cymbella mirabilis Hustedt Plate 42l/l0-ll
Op 108, p 112, f 240-241.
Holotype:
Tl/66. Celebes. 64. Matano-See. c.
Marked specimen named on the label.
Finder: 611.2-3-
108-68 Gomphonema acuminatum forma malayensis Hustedt Plate 424/1-5
Op 108, p 113, f 242.
Holotype:
163/45- Philippinen. 212. Uyaan-See. Mindanao.
Marked, unnamed specimens.
Finder: 321.8 (i-type); 379-1-4 (with rudimentary raphe); 410.2-5; 429-9;
431-4; 433-2.
108-69 Gomphonema towutense Hustedt Plate 424/6-9
Op 108, p 114, f 243.
Holotype:
397/41. Towoetisee. 60. c. Celebes. 2.
Marked specimens named on index sheet.
Finder: 316.5 (i-type); 585-1-2.
+
108-70 Gomphonema malayense Hustedt Plate.425/1-4
Op 108, p 115, f 244-245-
As lectotype is here chosen:
397/39a- Celebes. 71. Mahalonesee. 1.
Marked specimen named on index sheet.
Finder: 437-8 (i-type f 245).
Further slide:
397/44a. Towoeti-See. 54- Celebes. 1.
Marked specimen named on index sheet.
Finder: 524-8 (i-type f 244).
N.B. The internal central fissures of the raphe are strongly hooked.

288
108-71 Gomphonema angustissimum Hustedt Plate 425/5-6
Op 108, p 116, f 248-249-
Of the two slides with marked specimens, both having the taxon's name on
their labels, the following shall be the lectotype:
S2/83. Celebes. 68. Mahalone-See.
Finder: 435-4 (i-type f 249).
The other slide:
S2/87- Towoeti-See. 60. Celebes.
Finder: 374-1 (i-type f 248).
108-72 Gomphonema woltereckii Hustedt Plate 426/1-8
Op 108, p 116, f 246-247, 264-265.
The taxon is marked and named on six slides. Of these the following is
selected as lectotype:
Sl/24. Celebes. 64. Matano-See.
Finder: 349-5-6; 553-7-
Isolectotype:
N4/43. Celebes. 64. Matano-See.
Finder: 316.2-5.
Further slides:
397/40b. Towoetisee. 60. c. Celebes. 1.
Finder: 644-2.
S2/87. Towoeti-See. 60. Celebes.
Finder: 314-8.
397/44b. Towoeti-See. 54- Celebes.
Finder: 379-2-3-
397/46a. Wawontoa-See. Celebes. 75- 2.
Finder: 461.9.
108-73 Gomphonema longissimum Hustedt Plate 427/1-7
Op 108, p 118, f 261-263-
Three slides contain marked specimens and have the taxon's name either
on their labels or on an index sheet. Lectotype:
S2/84. Towoetisee. 60. c. Celebes.
Finder: 528.4-5 (i-type f 262).
Isolectotype:
397/40b. Towoetisee. 60. c. Celebes. 1.
Finder: 615.6 (i-type f 263).
Further slide:
Sl/24. Celebes. 64. Matano-See.
Finder: 437-4-
108-74 Gomphonema subtiliforme Hustedt Plate 428/8-10
Op 108, p 119, f 250-251.
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqi
289
Two slides have marked specimens named on the labels. As lectotype is here
chosen:
Sl/23- Celebes. 64. Matano-See.
Finder: 493-6.
Isolectotype:
R2/43- Celebes. 64. Matano-See.
Finder: 551-5-6.
108-75 Gomphonema subtile var. malayensis Hustedt Plate 424/10-12
Op 108, p 119, f 258-260.
There are three slides with marked, unnamed specimens. As lectotype is
here selected:
162/66. Leyte, Danao-See. 205.
Finder: 347-3 (i-type f 258).
Paralectotype:
163/50. Leyte, Danao-See. 141.
Finder: 285-4 (i-type f 259).
Further slide:
l63/44a. Philippinen. 212. Uyaan-See. Mindanao.
Finder: 468.4 (i-type f 260).
108-76 Gomphonema intermedium Hustedt Plate 428/l-7
Op 108, p 120, f 252-257-
Holotype:
S2/52. Mindoro. 86. Nauj ansee.
Marked specimens named on the label.
Finder: 349-5; 370.1; 401.1; 401.8-9; 408.8; 409-3; 409-4-5; 470-4-5;
524-1-
108-77 Denticula parva Hustedt Plate 429/1-17
Op 108, p 123, f 266-273.
There are marked specimens named on labels or index sheets of sev^n slides,
mostly girdle views. As lectotype is here designated:
397/46a. Wawontoa-See, Celebes. 75-2.
Finder: 284-3 (i-type f 271).
Paralectotype:
397/47a. Wawontoa-See. Celebes. 74-1-
Finder: 464-5 (i-type f 266).
Further slides:
X5/43- Celebes. 64- Matano-See.
Finder: 352-7-
N7/67- Celebes. 64. Matano-See.
Finder: 404-2-5-
Ma2/68. Celebes. 68. Mahalone-See.
Finder: 468.2-5.

290
397/42. Celebes. 54. Towoeti-See, P.
Finder: 441-5-8.
397/40b. Towoetisee. 60. c. Celebes. 1.
Finder: 340.6.
N.B. The last finder position is not authorized by Hustedt, the content
of the circle is not named on the index sheet. On the other hand, there
is another circle, no. 9 of the index sheet (finder 377-5-6) which
according to Hustedt contains "Denticula parva". But this is the type of the
following taxon (q. v.).
Denticula parva has a decided tendency towards an off-centre raphe.
I have not seen specimens which have a raphe along the central line, as
Hustedt states in his description.
108-78 Denticula bacillum Hustedt Plate 428/16-17
Op 108, p 123, f 275-
The holotype is most likely:
397/40b. Towoetisee. 60. c. Celebes. 1.
Finder: 377-5-6.
N.B. Of the marked Denticula specimens from the Danau Towuti this above
specimen fits Hustedt's description in all details. However, on the
accompanying index sheet it is named "Denticula parva". But the index sheets
of slides 397/37-50 (all from Celebes localities) are written with
ballpoint ,pen and must therefore be younger than about 1948, long after the
publication of the paper. I assume, therefore, that Hustedt, when writing
these index sheets, cancelled his original opinion and wanted to combine
Denticula bacillum with D. parva. After having seen a number of specimens
of the latter taxon, I feel that such a combination of the two taxa would
not be unjustified.
108-79 Denticula linearis Hustedt Plate 428/11-13
Op 108, p 124, f 274-
Holotype:
397/47a. Wawontoa-See. Celebes. 74- 1.
Marked specimen named on the index sheet.
Finder: 400.5-8.
108-80 Nitzschia subdenticula Hustedt Plate 428/14-15
Op 108, p 129, f 279-
Holotype:
397/37- Celebes. 64. Matano-See. g.
Marked specimen named on index sheet.
Finder: 442-7-8.
108-81 Nitzschia denticuloides Hustedt Plate 429/l8-22
Op 108, p 130, f 280-281.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
291
Holotype:
397/43- Celebes. 54- Towoeti-See. o.
Finder: 399-8-9 (i-type f 280); 584-1 (i-type f 28l).
N.B. On the index sheet Hustedt named these specimens "Nitzschia
amphibioides" which must be an error of Hustedt and probably not intention.
108-82 Nitzschia invicta forma lanceolata Hustedt Plate 430/1-4
Op 108, p 132, f 282.
Holotype:
W4/72. Volcano Lake, Luzon. 246.
Marked specimen named on the label.
Finder: 383-9-
N.B. The density of the transapical striae is 43-44 in 10 jjjn. Hustedt
had not succeeded in resolving the finer structure. - An affinity with
Nitzschia invicta Hustedt is very unlikely, the construction of the keel
of that taxon is quite different, and the only character that combines
these .two is that the striae of both remained unresolved to Hustedt (see
tx 98-44).
108-83 Nitzschia amphibioides Hustedt Plate 430/5-10
op 108, p 132, f 283-288.
Of the many slides containing marked specimens, named either on the labels
or on separate index sheets, the following is chosen as lectotype:
397/40a. Celebes. 54. Towoeti-See. d.
Finder: 346-4-7 (i-type f 283).
Isolectotypes:
397/42. Celebes. 54- Towoeti-See. P.
Finder: 369.8.
Xl/l6. Towoetisee. 54- Celebes.
Finder: 434-8; 613.9-
X2/4- Towoetisee, 54- Celebes, b.
Findei: 554-5-8.
Paralectotypes:
397/41- Towoetisee. 60. c. Celebes. 2.
Finder: 441-5-
397/40b. Towoetisee. 60. c. Celebes. 1.
Finder: 429-5 (i-type f 28.8).
Further slides:
X5/44- Celebes; 64- Matano-See.
Finder: 470.6.
Wl/74. Celebes. 64. Matano-See.
Finder: 320.8-9 (i-type f 285); 401.2.
R2/43. Celebes. 64. Matano-See.
Finder: 614.6-9 (i-type f 284).
N.B. The taxon is also - erroneously - named on the index sheet of

292
slide 397/43- But the two marked specimens represent the holotype of
tx 108-8l Nitzschia denticuloides.
The reader may have reservations in combining Hustedt's f 284 with
what we term the i-type of this figure (our t 430/8), because the two large
black dots which are present in Hustedt's illustration but not in ours.
These dots are due to dirt on the cover glass not removed by Hustedt. In
addition, Hustedt often made his micrographs with the condensor diaphragm
unduly closed so that such impurities were included in the micrographs
because of the greater depth of focus and the strongly increased contrast.
IO8-84 Nitzschia invisitata Hustedt Plate 431/1-6
Op 108, p 134, f 297-300.
The taxon is not named or marked. As lectotype is selected the following
slide on which the taxon is very frequent:
397/39a. Celebes. 71. Mahalone-See. 1.
Isolectotypes:
Ml/69- Celebes. 71. Mahalone-See.
Tl/62. Celebes. 71. Mahalone-See.
108-85 Nitzschia pseudoamphioxys Hustedt Plate 431/7-14
Op 108, p 135, f 301-308.
Holotype:
W4/68. Volcano Lake, Luzon. 246.
Marked specimens named on the label.
Finder: 313-4 (i-type f 304); 436-3 (i-types f 302, 307).
A few unmarked specimens of this frequent taxon are included.
108-86 Nitzschia woltereckii Hustedt Plate 431/15-19
Op 108, p 135, f 309-312.
As lectotype is here selected:
W4/59- Luzon, Teich, Bureau of Sc. 225.
The taxon is frequent, unmarked, earned on the label
Isolectotype:
W4/69. Luzon, Teich. Bureau of Sc. 225-
Further slide:
W4/60. Luzon. Manila. Reservoir II. 107-
This slide contains single unmarked specimens, the taxon's name is on the
label.
N.B. Hustedt probably mixed the sample numbers when stating that the
species is frequent in no. P224. A survey of a slide made with this sample
revealed no specimen, of the taxon. Evidently no. 225 was intended and not
224-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
108-87 Nitzschia subrostrata Hustedt
Op 108, p 137, f 313-319.
The lectotype shall be:
W4/71. Luzon. Teich. Bureau of Sc. 223.
Marked specimens named on the label.
Finder: 377-3; 524-3-6.
Further slide:
W4/64. Luzon. Buhi Lake. 209.
Marked specimen named on the label.
Finder: 588.1-4-
108-88 Nitzschia philippinarum Hustedt Plate 432/16-17
Op 108, p 137, f 322-330.
As lectotype is here designated:
W4/70. Taalsee. Luzon. 37.
Marked specimens named on the label; the taxon is frequent.
Finder: 369-2; 372.1; 403-2.
Paralectotype:
W4/66. Taalsee. Luzon. 43-
The taxon is named on the label, it is unmarked, frequent.
Further slides, all with marked specimens named on the labels:
W4/56. Buhi Lake, Luzon. 80.
Finder: 316.5-8.
W4/57. Luzon. Teich. Bureau of Sc. 216.
Finder: 376.2-3.
W4/58. Luzon. Teich. Bureau of Sc. 221.
Finder: 348.7-8.
108-89 Nitzschia luzonensis Hustedt Plate 433/8-16
Op 108, p 137, f 331-336.
Holotype: - ■'■._
W4/73. Taalsee. Luzon. 254-
Marked specimens named on the label, lots of specimens in each circle.
* Finder: 343-8; 341.5-6.
108-90 Nitzschia irrepta Hustedt Plate 432/18-20
Op 108, p 138, f 337-
Holotype:
I63/38. Luzon. Buhi Lake. 209-
Marked, unnamed specimen in very oblique position.
Finder: 314-7-
293
Plate 432/1-5

294
108-91 Nitzschia towutensis Hustedt Plate 433/1-7
Op 108, p 139, f 338-339.
Holotype:
397/40b. Towoetisee. 60. c. Celebes. 1.
Marked specimens named on index sheet.
Finder: 280.8; 432.5-8; 518.6-9; 615-7-8.
N.B. The two central fibulae are farther apart from another than the
others, indicating the presence of a central nodule which remained
unobserved to Hustedt.
108-92 Jfltzschia insecta Hustedt Plate 432/6-8
Op 108, p 141, f 348.
Holotype:
W4/62. Kratersee. Luzon. 72.
Marked, unnamed specimen. l
Finder: 460.7-
108-93 Nitzschia irresoluta Hustedt Plate 432/9
Op 108, p 142, f 349-350.
We regret to announce that we were unable to locate this taxon. Hustedt
evidently found only one specimen, but he seems to have failed to mark
itj because we checked for several times all slides from Lake Towuti, more
than thirty, but could not find N. irresoluta.
108-94 Stenopterobia pelagica Hustedt Plate 433/17-20
Op 108, p 143, f 353-355.
Holotype:
Xa/92. Celebes. 68. Mahalone-See.
The taxon is very abundant on the slide, unmarked, named on the label.
N.B. The same taxon was simultaneously published, also as new, in op
111, p 485 (tx 111-6).
108-95 Stenopterobia robusta Hustedt Plate 434/1-8
Op 108, p 145, f 351, 356.
The i-type could not be located, Hustedt evidently failed to mark it. As
lectotype is here selected:
Xa/87- Matanosee, Celebes.
A single mount (in Styrax).
Isolectotypes:
397/49. Celebes. 64. Matano-See. a.
Marked specimens named on index sheet.
Finder: 287-9; 376-5-8 (2 specimens).
397/38- Celebes. 64- Matano-See. h.
Finder: 403-4-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
295
Further slides with marked specimens named on the labels or on the
corresponding index sheets:
Xa/86. Uyaansee, Mindanao.
A mount with two picked specimens.
Xa/92. Celebes. 68. Mahalone-See.
Finder: 406.7.
397/47b. Wawontoa-See. Celebes. 74-2.
Finder: 413-7•
108-96 Surirella biseriata var. heteropolis Hustedt Plate 435/1-6
Op 108, p 146, f 359-361.
Holotype:
X6/100. Matanosee. Celebes.
This is a slide with three picked valves, the i-types of f 359-361.
Further slide:
X4/58. Towoeti-See. 54. Celebes.
Marked specimen named on the label.
Finder: 223.5-8.
108-97 Surirella biseriata var. celebesiana Hustedt Plate 436/1-5
Op 108, p 146, f 362-364.
Of the three slides with marked and named specimens the following is here
chosen as lectotype:
X6/99* Matanosee, Celebes.
A single mount, i-type f 362.
Isolectotype:
397/48. Celebes. 64. Matano-See. b.
Finder: 315-7-8 (i-type f 363).
Further slide:
X4/58. Towoeti-See. 54- Celebes.
Finder: 440-5 (i-type f 364).
... - _*.
108-98 Surirella sublinearis Hustedt Plate 437/1-5
Op 108, p 150, f 373-376.
Marked and named specimens of this species occur on six slides of which
the following shall be the lectotype:
397/38. Celebes. 64. Matano-See. h.
Finder: 288.6-9; 522.1 (i-type f 374).
Isolectotypes:
397/48. Celebes- 64. Matano-See. b.
Finder: 311-3-6 (i-type f 373)-
X5/44* Celebes. 64. Matano-See. d.
Finder: 348.4 (i-type f 375)-
X5/42. Celebes. 64. Matano-See. f.
Finder: 431-5-8.

296
Further slides:
X2/35. Towoeti-See. 54- Celebes, c.
Finder: 550.1.
X4/58. Towoeti-See. 54- Celebes.
Finder: 463.9.
108-99 Surirella alata Hustedt Plate 438/1-3
Op 108, p 151, f 377-378.
Holotype:
Xl/8. Towoetisee. 54- Celebes, m.
Marked specimen named on the label.
Finder: 648.5-
108-100 Surirella halteriformis Hustedt Plate 439/1-4
Op 108, p 152, f 379-381.
Of the three slides with marked and named specimens the following is here
designated as lectotype:
X5/43' Celebes. 64- Matano-See.
Finder: 438-4-7 (i-type f 379).
Isolectotypes:
397/38. Celebes. 64. Matano-See. h.
Finder: 382.6 (i-type f 38O).
Tl/66. Celebes. 64. Matano-See. c.
Finder: 412-4-7 (i-type f 381)-
108-101 Surirella papillifera Hustedt Plates 440/1-6, 44l/l-5
op 108, p 154, f 382-388.
There are four slides containing marked and named specimens of this taxon.
Of these the following is designated as lectotype:
X5/14- Matanosee. Celebes.
This is a single mount containing the i-type of f 385-386.
Isolectotypes:
X5/42. Celebes. 64- Matano-See.
Finder: 309-2-5-
Tl/66. Celebes- 64. Matano-See. c.
Finder: 258.3-6.
397/48. Celebes. 64. Matano-See. b.
Finder: 407-1-4 (i-type f 384); 499-9-
108-102 Surirella angustiformis Hustedt Plate 438/4-9
Op 108, p 156, f 389-390.
Among the three slides with marked and named specimens of this taxon the
following is selected as lectotype:
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
297
397/40a. Celebes. 54- Towoeti-See. d.
Finder: 586.3-6 (i-type f 389).
Isolectotypes:
X3/81. Towoetisee. 54- Celebes.
Finder: 6ll.8 (i-type f 390).
Xl/l6. Towoetisee. 54. Celebes.
Finder: 496.1-2.
108-103 Surirella cuspidata Hustedt Plate 442/1-5
Op 108, p 156, f 391-393-
Of the three slides contain!^ marked and named specimens the following
lectotype is chosen:
Tl/63. Wawontoa-See, Celebes. 77.
Finder: 291.4-5 (i-type f 392-393; 614-2-3-
Paralectotypes:
397/46b. Wawontoa-See, Celebes. 75- 1.
Finder: 470.3-6 (i-type f 391).
397/47b. Wawontoa-See. Celebes. 74. 2.
Finder: 316.7-
108-104 Surirella horrida Hustedt Plate 443/l-7
Op 108, p 157, f 394-395.
As lectotype is here selected:
X5/52. Matanosee, Celebes.
This is a single mount, i-type f 394.
Isolectotypes:
X5/53* Matanosee, Celebes.
Another single mount.
X5/54. Matanosee, Celebes.
A mount with two picked valves, the i-type of f 395 and of the following
tax.on.
108-105 Surirella horrida forma constricta Hustedt Plate 442/6-7
Op 108, p 157, f 396.
Holotype:
X5/54. Matanosee, Celebes.
A slide with two picked specimens, one belonging to the preceding taxon
and the i-type of f 396.
108-106 Surirella conversa Hustedt Plate 444/1-4
Op 108, p 159, f 397-400.
Contrary to Hustedt's statement ("vereinzelt im Towoetisee") there are
marked and named specimens from at least three different localities.
As lectotype is here selected:

298
Xl/93- Celebes. Towoetisee.
This is a single mount with the i-type of f 400.
Further slides:
X5/47- Wawontoa-See. Celebes. 77.
Finder: 436.5 (i-type f 397-398?).
397/49. Celebes. 64. Matano-See. a.
Finder: 524-7 (i-type f 399)-
With interrogation mark Hustedt recorded the following:
397/39a. Celebes. 71. Mahalone-See. 1.
Finder: 559-4-5-
108-107 Surirella decipiens Hustedt 'A Plate 445/1.-4
Op 108, p 161, f 401-402.
As lectotype is here proposed:
X2/4- Towoetisee. 54- Celebes, b.
Marked specimen named on the label. y
Finder: 493-4-5 (i-type f402).
Isolectotype:
397/40a. Celebes. 54. Towoeti-See. d.
Marked specimen named on index sheet.
Finder: 521.8 (i-type f 401).
108-108 Surirella celebesiana Hustedt Plates 446/1-3, 447/1-3
Op 108, p 161, f 403-406.
There are six slides with marked and named specimens. As lectotype is here
chosen:
Xl/75. Matanosee, Celebes.
A single mount, i-type f 406.
Isolectotypes:
X5/46. Celebes. 64. Matano-See. e.
Finder: 289.6 (i-type f 405).
Wl/74. Celebes. 64. Matano-See.
Finder: 615-7*
397/48. Celebes. 64. Matano-See. b.
Finder: 432.2-5-
Further slides:
Xl/76. Towoeti-See. Celebes. 56.
Finder: 344.6 (i-type f 403).
397/39b. Towoeti-See. 54- Celebes, a.
Finder: 585-5 (i-type f 404).
108-109 Surirella celebesiana var. matanensis Hustedt Plate 447/4
Op 108, p 162, f407-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
299
Holotype:
397/49- Celebes. 64- Matano-See. a.
Marked specimen named on index sheet.
Finder: 531-2.
108-110 Surirella rudis var. levis Hustedt Plate 448/4-5
Op 108, p I64, f 408.
Holotype:
X5/42. Celebes. 64. Matanosee.
Marked specimen named on the label.
Finder: 497-9-
N.B. Hustedt crossed out the specific epithet "rudis".^pn the label
and replaced it by "Terryi". See also tx 41-16.
108-111 Surirella fimbriata Hustedt Plate 445/5-7
Op 108/ p 164, f 409-410.
Holotype:
X2/42. Luzon, Lyon, Tumpel. 255-
Marked specimens named on the label.
Finder: 465-5 (i-type f 409); 532.2-3 (i-type f 410).
108-112 Surirella ovulum Hustedt Plate 446/4-5
Op 108, p 164. f 411-
Holotype:
X5/13- Cagayan-Sulu. Singuan-See. 244-
Marked specimen named on the label.
Finder: 494-6-9-
108-113 Surirella pseudovalis Hustedt Plate 448/1-3
Op 108, p 166, f 412-415.
There are two slides with picked specimens named on the labels, but none
can be recognised as an i-type. As lectotype is therefore here chosen:
X5/15. Towoeti-See, Celebes.
Isolectotype:
X5/l6. Towoeti-See, Celebes.
N.B. This taxon was simultaneously published, also as nov. spec, in
op 111, p 519 (tx 111-12).
108-114 Surirella woltereckii Hustedt Plate 449/1-4
Op 108, p 166, f 416-419.
There are four slides with the species name on their labels, three of these
are with picked specimens. As lectotype is here designated:
X5/1&. Towoeti-See, Celebes.
A slide with six picked specimens.

300
Isolectotypes:
X5/19* Towoeti-See, Celebes.
A slide with four picked specimens.
X7/100. Towoeti-See, Celebes.
A strewn slide with many unmarked spesimens.
Further slide:
X8/l. Matanosee, Celebes.
A slide with one picked specimen.
N.B. This taxon was simultaneously published, also as nov. spec, in
op 111, p 509 (tx 111-10).
108-115 Surirella bidens Hustedt Plate 450/1-2
Op 108, p 168, f 420.
Holotype:
397/42. Celebes. 54- Towoeti-See. P.
Marked specimen named on index sheet.
Finder: 348.5-8.
108-116 Surirella ventricosa Hustedt Plate 450/3-8
Op 108, p 168, f 421-424.
There are three slides with marked and named specimens. Among these the
following is chosen as lectotype:
397/35- Towoetisee. 54. Celebes, g.
Finder: $85-7 (i-type f 422).
Isolectotypes:
Xl/l6. Towoetisee. 54. Celebes.
Finder: 550.1-4 (i-type f 424).
397/40a. Celebes. 54. Towoeti-See. d.
Finder: 311.6 (i-type f 421).
108-117 Surirella elegantula Hustedt Plates 45l/i-4,- 452/1
op "108, p 172, f 425-427.
Three slides have marked and named specimens. Lectotype:
397/35. Towoetisee. 54. Celebes, g.
Finder: 461.4 (i-type f .426-427); 674-6-9 (i-type f 425)-
Isolectotype:
X2/4. Towoetisee. 54- Celebes, b.
Finder: 502.2-5.
Further slide:
397/49- Celebes. 64. Matano-See. a.
Finder: 558.6.
108-118 Surirella elegantula forma cuneata Hustedt Plate 452/2-3
op 108, p 172, f 428/429.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
301
Holotype:
X6/98. Matanosee, Celebes,
This is a single mount with the i-type.
108-119 Surirella excellens Hustedt
Op 108, p 174, f 436-437.
Marked and named specimens of this taxon
the following is chosen as lectotype:
397/49. Celebes. 64. Matano-See. a.
Finder: 345-8 (i-type f 436).
Isolectotypes:
397/37- Celebes. 64. Matano-See. g.
Finder: 371-3-6 (i-type f 437)-
397/38. Celebes. 64. Matano-See. h.
Finder: 6l6.6.
Further slide:
X2/35. Tbwoeti-See. 54. Celebes, c.
Finder: 461.3-
108-120 Surirella pediculata Hustedt Plate 452/4-5
Op 108, p 176, f 438.
Holotype:
X5/45* Celebes. 64. Matano-See.
Marked specimen named on the label.
Finder: 313-1.
108-121 Surirella sulcata Hustedt Plate 453/4-5
Op 108, p 177, f 439-
Holotype:
Xl/76. Towoeti-See, Celebes. 56.
Marked specimen named on the label.
Finder: 405.5-6.
108-122 Surirella elegans forma lata Hustedt Plate 454/1-3
Op 108, p 177, f 441-
Two slides contain marked specimens named on index sheets. As lectotype
is selected:
397/48. Celebes. 64. Matano-See. b.
Finder: 528.1 (i-type f 441).
Isolectotype:
397/49- Celebes. 64. Matano-See.
Finder: 585-7-
Plate 453/1-3
appear on four slides. Of these

302
108-123 Campylodiscus papillosus Hustedt Plate 455/1-4
Op 108, p 179, f 442-443^
Holotype:
397/37- Celebes. 64. Matano-See. g.
Marked specimen named on index sheet.
Finder: 497-6.
Op. 109. Diatomeen aus der Umgebung von Abisko in Schwedisch-Lappland.
Arch. Hydrobiol. 39, 82-174, 1942.
109-1 Achnanthes subrostrata Hustedt Plate 456/1-7
Op 109, P 98, f 6-9.
Holotype:
Ma2/85. Lappland. 184. c. Abisko. Bach. d.
Marked specimens named on the label.
Finder: 460.7-8; 519*2; 524-1-4; 525-2-5; 526.3-6; 527-3-5; 530.4-5;
532.1.
109-2 Achnanthes thienemannii Hustedt Plate 456/12-17
Op 109, p 98, f 2-5-
Of the two slides with marked specimens, both with names on the labels,
the following is selected as lectotype:
Ma2/92. Abisko. 178a. Quelle am Njulja. d.
Finder: 466.1; 467-2-3-
Isolectotype:
Ma2/93. Abisko. 178a. Quelle am Njulja. c.
Finder: 376.4-7-
*10y-3 Navxcuia laticeps Hustedt Plate 457/1-5
op" "169, p 108, "f 32-34.
Holotype:
N4/9.3. Abisko. 165. 1. Teich am Bahndamm. a.
Marked specimens named on the label.
Finder: 471-4; 580.1.
109-4 Navicula seminulum var. intermedia Hustedt Plate 456/18-24
op 109, p no, f 25-28.
Holotype:
N7/66. Abisko. Quelle. 156. c.
Marked specimens named on the label.
Finder: 312.9; 319-5-6; 320.9; 345.2-3; 370.5-8; 377.8; 378.2; 407-2-5.
N.B. There remains some suspicion that this taxon belongs in the genus
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
303
Achnanthes, but our observations are not sufficiently conclusive so that
for the time being no transfer is made.
109-5 Navicula rivularis Hustedt Plate 456/8-11
Op 109, p 112, f 29-31.
Holotype:
N7/33. Abisko. 169- Abflufihach. c.
Marked specimens named on the label.
Finder: 533-1; 613.2.
N.B. In op 170, p 129, f 1262, Hustedt synonymises this taxon with
and includes it in Navicula stroemii Hustedt.
109-6 Navicula tenuicephala Hustedt Plate 457/11-16
Op 109, p 113, f 16-21.
There are three slides with the taxon's name on their labels. Of these
the following may be the lectotype:
P2/57- Lappland. 189- Abisko. Tumpel. e.
Marked specimens named on the label.
Finder: 283-5-6; 313-2-3; 343-7; 369-3-
Isolectotype:
N8/53- Lappland. 189. Abisko. Tumpel. e.
None of the frequent specimens is marked.
Further slide:
N8/52. Lappland. l82.a. Abisko. Quellgebiet. a.
Marked specimen named on the label.
Finder: 405-2-5.
N.B. The structure had remained invisible to Hustedt. We were now able
to resolve partly the striae of the specimen at 369-3, slide P2/57, and
we counted 56 striae in 10 um.
109-7 Navicula bryophila var. lapponica Hustedt Plate 456/25-31
Op 109, p 11/!, f 11-15.
Of the two slides with marked specimens named on the labels the following
is chosen as lectotype:
Nl/80. Abisko. Quelle. 156. c.
Finder: 401.1; 431-5-6; 464-8-9-
Further slide:
Nl/8l. Lappland. l82.a. Abisko. Quellgebiet. d.
Finder: 315-5-6; 349-5-6; 351-6; 529-9-
109-8 Navicula naumannii Hustedt Plate 457/6-10
Op 109, p 115, f 22-24-
There are two slides with marked specimens named on their labels. Of these
the following is proposed as lectotype:

304
N6/l. Abisko. l8l. Teich. c.
Finder: 373-1 (i-type f 23).
Isolectotype:
N4/58. Abisko. 181. Teich. c.
Finder: 437-2-3.
109-9 Navicula abiskoensis Hustedt Plate 456/32-33
Op 109, P 118, f 36.
Hoi0type:
Nl/2. Abisko. 169- Abflufibach. a.
Marked specimen named on the label.
Finder: 347-8-9-
109-10 Navicula tuscula forma angulata Hustedt Plate 457/17-18
Op 109, p 120, f 37-
Holotype:
Nl/2. Abisko. 169. Abfluftbach. a.
Marked specimens named on the label.
Finder: 346-4 (i-type); 347-8-9-
109-11 Pinnularia lapponica Hustedt Plate 458/1-4
Op 109, P 122, f 43-45-
Holotype:
P2/57. Lappland. 189- Abisko. Tumpel. e.
Marked specimens named on the label.
Finder: 255-8; 315-5-8; 316.3-
109-12 Pinnularia stomatophora var. gibbosa Hustedt Plate 457/19-20
Op 109, P 126, f 50.
Holotype:
P3/72. Abisko. l60. Moorgraben. a.
Marked specimen in very oblique position named on the label.
Finder: 495-9-
109-13 Pinnularia brandelii var. recta Hustedt Plate 458/5-6
Op 109, P 126, f 51.
Holotype:
Pl/40. Abisko. l69- Abfluftbach. b.
Marked specimen named on the label.
Finder: 493-5-6.
109-14 Cymbella leptoceros var. rostrata Hustedt Plate 458/9-14
Op 109, p 322, f 52-54-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
305
Holotype:
T3/99- Abisko. l8l. Teich. b.
Marked specimens named "Cymbella" on the label.
Finder: 346.6-9; 408.3-6; 437-7; 442.5-8; 465-5-8; 467-9; 471-7-8 (2
specimens); 528.8.
N.B. Krammer (in Krammer & Lange-Bertalot, Naviculaceae, p 25, 1985)
separates this taxon from Cymbella leptoceros and raises it to species
rank under the name Cymbella designata Krammer.
109-15 Epithemia sorex var. lapponica Hustedt Plate 458/7-8
Op 109, p 149, i" 83-84.
Holotype:
Va/36. Abisko. 157- 3- Teich am Bahndamm. b.
Unmarked specimens - the taxon is frequent - named on the label.
Op. 110. Beitrage zur Algenflora von Bremen. V. Die Diatomeenflora einiger
Sumpfwiesen bei Bremen. Abh. Naturw. Ver. Bremen 32, 184-221, 1942.
110-1 Navicula tackei Hustedt Plate 459/1-4
Op 110, p 194, f 6-7.
Holotype:
NlO/84. Bremen-Warturm. Tumpel. 1.
Marked specimens named on the label.
Finder: 368.7-8; 399-1; 409-1-2.
N.B. Krammer & Lange-Bertalot (Naviculaceae, p ll6, 1985) recombine
this taxon: Stauroneis tackei (Hustedt) Krammer &. Lange-Bertalot. It has
to. be mentioned here that the "holotype" slide number given by them is
incorrect, N6/86 is not from Bremen but from Switzerland.
110-2 Navicula pseudoarvensis Hustedt Plate 458/15-21
Op 110, p 195, f 8-10,
We found marked, but unnamed, specimens on two slides of which the
following may be the lectotype:
212/13. Warturm. Tumpel. Bremen. 4.
Finder: 38O.6; 584-2 (2 specimens).
Paralectotype:
212/19. Bremen-Warturm. Tumpel. 6.
Finder: 370.6-9.
110-3 Navicula gibbula forma undulata Hustedt Plate 459/5
Op 110, p 197, f 13-

306
Holotype:
212/10. Bremen-Warturm. Tumpel. 2.
Marked, unnamed specimen.
Finder: 618.7-8.
N.B. In op 170, p 14, Hustedt inc
forma undulata Krasske.
110-4 Navicula pseudoforcipata Hustedt
Op 110, p 199, f 11.
Holotype:
NIO/84. Bremen-Warturm. Tumpel. 1.
harked specimen named on the label.
Finder: 224-7.
110-5 Caloneis silicula var. truncatula
Op 110, p 200, f 23.
Holotype:
212/10. Bremen-Warturm. Tumpel. 2.
Marked, unnamed specimen.
Finder: 376.8-9.
110-6 Gomphonema tackei Hustedt
Op 110, p 205, f 16-18.
Holotype:
Sl/34. Bremen-Warturm. Tumpel. 5-
Marked specimens named on the label.
Finder: 376.8; 381.8; 402-4; 410.2 (2 s]
110-7 Nitzschia pseudofonticola Hustedt
up iiu, p 2uy, 1 4-5-
Holotype:
212/10. Bremen-Warturm. Tumpel. 2.
Marked, unnamed specimens.
Finder: 434-5-8; 502.2-5; 673-6-9*
110-8 Nitzschia radicula Hustedt
Op 110, p 209, f 2-3.
Holotype:
W3/80. Bremen-Warturm. Tumpel. 3-
Marked specimens named on the label.
Finder: 257-8; 372.1-4; 378.4; 493-3-6;
ides this taxon in Navicula gibbula
Plate 458/22-23
forma constricta Hustedt
Plate 459/6
Plate 459/7-15
jecimens); 432.1-2.
Plate 459/16-20
Plate 459/21-25
524-1-4-
SdJVUED BY pAhUTA yORI, Kiev-2007,e-mail pahutaqweS:
307
110-9 Nitzschia pilum Hustedt Plate 459/26-27
Op 110, p 210, f 1,
Holotype:
tfl/45- Bremen-Warturm. Tumpel. 1.
Marked specimen named on the label.
Finder: 347.1-2.
Op. 111. Contributions in G. Huber-Pestaloszi, Das Phytoplankton des
Siifiwassers, 2. Teil, 2. Halfte, Diatomeen. Die Binnengewasser 16, 2 (2),
^67-549, 1942.
111-1 Melosira longispina Hustedt Plate 460/1-3
Op 111, p 388, f 469a.
Holotype:
A2/21. Chuzenij-See, PI. Japan.
The taxon is almost pure, unmarked, named on the label.
N.B. This species was transferred to the genus Aulacoseira Thwaites
by Simonsen (Bacillaria 2, p 6l, 1979).
111-2 Melosira longispina var. tenuis Hustedt Plate 460/4-5
op 111, p 389, f 469b.
Holotype:
A2/22. Juno-See, PI. Japan.
The taxon is named on the label, is unmarked, occurs almost purely on the
slide.
N.B. Along with the nominate variety, this taxon was transferred to
the genus Aulacoseira Thwaites by Simonsen (Bacillaria 2, p 6l, 1979)•
111-3 Cyclotella fottii Hustedt Plate 462/1-4
Op 111, p 400, f 492.
See also op 117, p 900.
There is a considerable number of slides in the collection, all made in
1934, all with the taxon1 s name on their labels, and also the locality
"Ochridasee" is identical on all these slides. Two are slides with picked
specimens mounted in Styrax (slides no. Acl/51 and 52), a very unnecessary
measure, because the species occurs in great numbers on all slides, of
which a great part is mounted in Hyrax. Nevertheless, when it comes to
selecting a type, the two slides with the picked valves are the only ones
containing specimens selected by the author, there being no marked
specimens on the other slides. Therefore I designate here as lectotype:
Acl/51. Ochridasee.
The other slides, nos. Acl/49 and 50, and Acl/52-59, are all isolectotypes.

308
111-4 Cyclotella stryriaca Hustedt Plate 461/4-7
Op 111, p 403, f 497-
Several slides have the taxon's name on their labels and contain marked
specimens. Of these the following shall be the lectotype:
Ah/46. Grundlsee. PI. 20 m. 6.5-35-
Finder: 370.6 (i-type); 410.4-7; 467-1-4; 529-8-9-
Isolectotypes:
Ah/38. Grundlsee, Ostalpen.
Finder: 318.8.
Ah/40. Grundlsee, Ostalpen.
Finder: 315.1.
Paralectotype;
Acl/71- Grundlsee. PI. VI.1933-
A slide with unmarked specimens named on the label.
Further slides:
Acl/72. Altausseer See, Ostalpen.
Finder: 258.1-4; 371.2; 434-6; 467.5-
Acl/73* Altausseer See, Ostalpen.
Finder: 317-2-5; 384-1; 413-4-5; 497-1-4; 527-8-9; 556.6.
111-5 Stephanodiscus alpinus Hustedt Plates 460/6-7, 46l/l-3
Op 111, p 412, f 508.
Quite a number of slides is labelled with the taxon's name and contains
marked specimens. As lectotype is here proposed:
Ah/46. Grundlsee. PI. 20 m. 6.5-35-
Finder: 225-6-9; 225-8; 258.8; 262.1; 289-1-4-
Isolectotypes:
Ah/38. Grundlsee, Ostalpen.
Finder: 287-4; 345-6-9; 347-5-8; 375-5; 586.4-7-
Ah/40. Grundlsee, Ostalpen.
Finder: 346.6; 440.2-3; 492-4-7; 521.7; 526.6-9; 583-7-
Further slides: _
Acl/72. Altausseer See, Ostalpen.
Finder: 406.6-9-
Acl/73- Altausseer See, Ostalpen.
Finder: 285-4-5; 353-8; 440.1.
Ah:39- Altausseer See. PI. VI.1933-
A slide with unnamed specimens named on the label.
(111-6 Stenopterobia pelagica Hustedt)
op 111,. p 485, f 592.
The same taxon was simultaneously published, also as "nov. spec", in op
108, p 143, f 353-355, see tx 108-94- Since many other taxa which Hustedt
recorded in op 111 from the Indomalayan Archipelago are cited with the
author's name, this taxon is not treated here but in op 108.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
309
111-7 Surirella asperrima Hustedt Plate 463/I-4
Op 111, p 498, f 601A.
The taxon is nowhere marked or recorded by name. Therefore the following
slide is proposed as lectotype:
Tl/70. Telezker See. 12. Sibirien. 1.
The species is fairly frequent on this slide.
111-8 Surirella bidentula Hustedt Plates 463/5, 464/1-2
Op 111, p 502, f 607A.
Three slides have the taxon's name on their labels of which the following
is chosen as lectotype:
X6/60. Baikalsee. Olhon Gate.
Marked specimen in a Hyrax mount.
Finder: 528.9 (i-type).
Isolectotypes, both single mounts:
Xl/41. Baikalsee.
XI/42. Baikalsee.
N.B. The specimen on slide Xl/41 is slightly heteropolar, Hustedt's
description is therefore not quite complete.
111-9 Surirella vasta var. linearis Hustedt Plate 464/3
Op 111, p 504 (no illustration).
Holotype:
X4/95- Tanganyika-See. 6.
A single mount named on the label.
(111-10 Surirella woltereckii Hustedt)
Op 111, p 509, f 618.
The same taxon was published simultaneously in op 108, p 166, f 416-419,
see tx 108-114- Since many other taxa from the Indomalayan Archipelago
which.. Hustedt discusses in op 111 are with the author's name and not
declared as new, the species is here treated in op 108.
111-11 Surirella skvortzowii Hustedt Plates 465/1-2, 466/1-3
Op 111, p 517, f 631B.
There are fifteen slides, with picked specimens or single mounts, of this
taxon, all named on the labels. None of these contains the photographed
specimen, however. Therefore the first in the series is chosen as the
lectotype:
X4/10. Baikalsee.
The other slides have all only "Baikalsee" and the taxon's name on their
labels. The numbers of these isolectotypes are X4/11 to X4/24-
N.B. Since the combination Surirella skvortzowii is already occupied

310
by Meyer 1930, Hustedt's name has to be replaced by a new one:
Surirella skvortzowiana novum nomen, synonym Surirella skvortzowii Hustedt,
op 111, p 517, 1942.
(111-12 Surirella pseudovalis Hustedt)
Op ill, p 519, f 637.
The same taxon was simultaneously published in op 108, p 166, f 412-415,
see tx 108-113- Since all but three taxa which Hustedt published in 108
are cited in op 111 with the authority name and not as "nov. spec", this
species is here treated in op 108.
111-13 Campylodiscus tanganicae Hustedt Plates 467/1-3, 468/1-3
Op 111, p 523, f 644.
Of the two slides with the taxon's name on their labels, the following
is proposed as lectotype:
Z2/52. Tanganyika-See. 6.
A single mount with the i-type.
Isolectotype:
Z2/53- Tanganyika-See. 6.
A mount with three picked valves.
Op. 112. Die Diatomeenflora einiger Hochgebirgsseen der Landschaft Davos
in den Schweiser Alpen. Intern. Rev. ges. Hydrobiol. 43, 124-197, 1943-
112-1 Melosira distans var. helvetica Hustedt Plate 469/1-4
Op 112, p 137, f 7-8.
Holotype:
A2/84- Davos. Unterer Grialetschsee. Moos. 175-
'the taxon, named on \lie label, occurs in maasea and is not marked.
N.B. The nominate variety, Melosira distans Ehrenberg var. distans,
was transferred to the genus Aulacoseira Thwaites by Simonsen (Bacillaria
2, p 57, 1979)- Therefore the present taxon has to be recombined:
Aulacoseira distans var. helvetica (Hustedt) Simonsen, nov. comb., synonym
Melosira distans var. helvetica Hustedt, op 112, p 137, 1943-
112-2 Eunotia bigibba forma elongata Hustedt Plate 469/5-6
Op 112, p 143, f 9.
Holotype:
Ll/21. Davos. Unterer Grialetschsee. Grund. 230.
Marked specimen named on the label.
Finder: 461.8.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej':
311
112-3 Stauroneis gracillima Hustedt Plate 469/7-IO
Op 112, p 154, f 21-23.
Holotype:
277/60. Davos. Unterer Grialetschsee. Lebermoos. 172.
Marked specimens named "Staur.? Nav.?» on index sheet.
Finder: 533-7; 554-4-5; 592.1.
112-4 Stauroneis alpina Hustedt Plate 470/1-3
Op 112, p 154, f 18-19.
As lectotype is here designated:
Nal/17. Kl. Fluelasee. 135. Grund. Davos. Schweiz.
Marked specimen named on the label.
Finder: 318.6 (i-type f 18).
Further slide:
277/57. Davos. Unterer Grialetschsee. Bach. 171.
Marked specimen named "Stauroneis" on the index sheet.
Finder: 374-7 (i-type f 19).
112-5 Stauroneis laterostrata Hustedt Plate 469/H-I3
Op 112, p 155, f 17-
Holotype:
Nal/63- Schwarzsee, an Moos. 128.
Marked specimen named on the label.
Finder: 375-1-
112-6 Navicula digitulus Hustedt Plate 470/4-9
Op 112, p 162, f 26-30.
Holotype:
N2/69. Schwarzsee. 126. Grund. Davos. Schweiz.
Marked specimens named on the label.
Finder: 373-5-8; 434-.2-5; 492.7-8" (2 specimens).
112-7 Navicula descripta Hustedt Plate 470/10-11
Op 112, p 170, f 25.
Holotype:
Ma2/86. Schwarzsee 3$. Grund. Davos. Schweiz.
Marked, unnamed specimen.
Finder: 489-9-'
N.B. The length given by Hustedt ("24 u") has to be corrected to
read "29 urn". - Krammer & Lange-Bertalot (Naviculaceae, p 24, 1985)
recombine this taxon: Cymbella descripta (Hustedt) Krammer & Lange-Bertalot

312
112-8 Navicula pseudotuscula Hustedt Plate 470/17-20
Op 112, p 170.
Syn.: Navicula arata Grunow sensu Hustedt, op 90, p 194, f 21-22, 1937.
Holotype:
N4/27. Grunsee bei Davos. 224.
Marked specimens named on the label.
Finder: 374-3; 435-2- 528.7.
112-9 Neidium tenuissimum Hustedt Plate 470/12-14
Op 112, p 188, f 47.
Holotype:
Nel/70. Schwarzsee. 41. Ausflufi. Schweiz.
Marked specimen named on the label.
Finder: 530-3-
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 100, 1985) include this
taxon as synonym in Neidium alpinum Hustedt (see tx 112-10).
112-10 Neidium alpinum Hustedt Plate 470/15-16
Op 112, p 189, f 48.
■Holotype:
Nel/62. Davos. Unterer Grialetschsee. Algen. 173-
Marked specimen named on the label.
Finder: 551-1.
Op. 113- Die Diatomeenflora einiger Hochgebirgsseen der Landschaft Davos
in den Schweizer Alpen. Fortsetzung. Intern. Rev. ges. Hydrobiol. 43,
225-280, 1943.
113-1 Nitzschia rectiformis Hustedt Plate 47l/l-5
Op 113, p 229, f 49-52.
i
The taxon is nowhere recorded by name. There is one slide that contains
specimens in circles, but I suspect that these are "marked" only
accidentally with other diatoms. Nevertheless, this latter slide may serve
as lectotype, whereas the second-mentioned slide - mounted with a different
sample - may be considered as paralectotype. Lectotype:
Nal/17. Kl. Fliielasee. 135- Grund. Davos. Schweiz.
(Accidentally?) marked specimens.
Finder: 468.9; 616-1-4 (several specimens).
The taxon is rather frequent,
Paralectotype:
277/23. Kl. Fluelasee. 129. Grund. Davos. Schweiz.
No marked or named specimens. The taxon is rather frequent, though
somewhat less than on the preceding slide.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
313
N.B. Hustedt was not able to resolve the structure. We succeeded in
photographing the striae and counted about 45 in 10 |im.
113-2 Nitzschia alpina Hustedt Plate 471/6-11
Op 113, P 232, f 60-65-
The taxon is nowhere recorded or marked. As lectotype is therefore here
selected:
277/29- Schottensee. 105- oberer Zuflufl. Davos.
The taxon is not rare on this slide.
113-3 Nitzschia hiemalis Hustedt Plate 47l/l2-l6
Op 113, p 233, f 57-59.
This taxon is nowhere named or marked for which reason the following slide
is chosen as lectotype:
N2/56. Schwarzsee bei Davos. 121.
The taxon is not unfrequent.
113-4 Nitzschia suchlandtii Hustedt Plate 471/17-23
Op 113, p 233, f 53-56.
No relevant slide contains marked or named specimens. As lectotype is here
designated:
N2/56. Schwarzsee bei Davos. 121.
The taxon occurs only in single specimens without being rare, however.
Op. 114- Neue und wenig bekannte Diatomeen. I. Ber. Deutsch. Bot. Ges.
61, 271-290, 1944.
114-1 Navicula grossepunctata Hustedt ^ Plate 472/1-5.
Op 114, p 271,- -f l*
Holotype:
Nl7/733.* Kamerun, Lagune, 2.5-
Marked specimen named on index sheet.
Finder: 401.6 (i-type).
Para- (iso-?) Types, marked specimens named on index sheets:^
N17/78a. Kamerun, Lagune, 3-12.
Finder: 622.2.
N17/78b. Kamerun, Lagune, 3-13-
Finder: 619.8.

3H
114-2- Naviciaa placentiformis Hustedt Plate 472/6-7
Op 114, P 272, f 2.
Holotype:
N17/68. Kamerun, Lagune 1.1.
Marked specimen named on index sheet.
Finder 581.7.
114-3 Navicula brachium Hustedt Plate 472/8-9
Op 114, P 272, f 3.
Of the two slides with marked specimens named on index sheets, the
following may serve as lectotype:
N17/73h* Kamerun, Lagune. 2.6.
Finder: 458.6.
Paralectotype:
N17/69 ■ Kamerun, Lagune 1.2.
Finder: 459.6.
114-4 Navicula auriculata Hustedt Plate 472/10-12
Op 114; P 273, f 4-
Holotype:
230/70. Kamerun. Lagune. lb'.
Markedj unnamed specimen.
Finder: 429-4-5-
N.B. In op 172, p 549, f 1587, Hustedt synonymizes this taxon with
and includes it in Navicula dissipata Hustedt (tx 89-36)-
114-5 Navicula rhombiformis Hustedt Plate 472/13-15
Op 114, p 273, f 6.
The taxon is marked on four slides, always named on index sheets. Holotype:
. _N17/73b._.Kamerun, Lagune. 2.6.
Finder: 412.1-4 (i-type f 6).
Isotypes:
N17/73a. Kamerun, Lagune. 2.5-
Finder: 286.6.
N17/74b. Kamerun. Lagune 2.8.
Finder: 433-7-
Paratype:
N17/70. Kamerun. Lagune 1.3-
Finder:316.2.
114-6 Navicula limata Hustedt Plate 473/1-3
Op 114, p 274, f 7.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
315
Holotype:
N17/74a. Kamerun, Lagune. lb. 7-
Marked specimen named on index sheet.
Finder: 404-7-
114-7 Navicula commutabilis Hustedt Plate 473/4-7
Op 114, p 274, f 15.
There are two slides with marked specimens named on index sheets. The
following is chosen as lectotype:
N17/74a. Kamerun, Lagune. lb. 7-
Finder: 320.6-9; 344-8; 404-2 (i-type).
Paralectotype:
N17/69. Kamerun, Lagune. 1.2.
Finder: 314-8.
114-8 Navicula commutabilis forma lanceolata Hustedt Plate 473/8-9
Op 114, p 274, f 16.
Holotype:
NI7/69. Kamerun, Lagune. 1.2.
Marked specimen named on index sheet.
Finder: 436.3; 489-2 (i-type).
Paratype:
N17/74a. Kamerun, Lagune. lb. 7-
Marked specimen named on index sheet.
Finder: 349-5-6.
114-9 Navicula diversipunctata Hustedt Plate 473/10-12
Op 114, p 275, f 5-
Holotype:
N17/73&. Kamerun, Lagune. 2.5-
Marked specimen named on index sheet,
rj-iiaer: jno.y.
114-10 Navicula omegopsis Hustedt Plate 473/13-16
Op 114, p 275, f 8.
There are four slides with marked specimens named on the corresponding
index sheets. Holotype:
N17/74a. Kamerun, Lagune. lb. 7-
Finder: 429-9 (i-type).
Paratypes:
N17/68^ Kamerun, Lagune. 1.1.
Finder: 432.8.
N17/73a. Kamerun,, Lagune. 2.5-
Finder: 441.6-9-

316
N17/75- Kamerun, Lagune. 3-9-
Finder: 164-5-
114-11 Navicula gratissima Hustedt Plate 474/1-2
Op 114, P 276, f 9.
The taxon is marked on five slides, always named on the corresponding
index sheet. Holotype:
N17/74a. Kamerun, Lagune. lb. 7*
Finder: 560.6 (i-type).
Paratopes:
N17/68. Kamerun, Lagune. 1.1. N17/70. Kamerun, Lagune. 1-3-
Finder: 645-1. Finder: 378.5-6; 468.7.
NI7/69. Kamerun, Lagune. 1.2. N17/74b. Kamerun, Lagune. 2.8.
Finder: 410.9; 458.5- Finder: 285-8.
114-12 Navicula defluens Hustedt Plate 474/3-5
Op 114, P 276, f 12.
Holotype:
230/70. Kamerun, Lagune. lb.
Marked, unnamed specimen.
Finder: 528.2 (i-type).
Isotype:
N17/71. Kamerun, Lagune. lb. 4-
Marked, unnamed specimen.
Finder: 413-8.
114-13 Navicula longicephala Hustedt Plate 474/6-10
Op 114, p 277, f 17-
There are two slides with marked specimens named on index sheets. Holotype:
N17/74a. Kamerun, Lagune. lb. 7-
Finder: 256.6-9.
Isotype:
N17/71. Kamerun, Lagune. lb. 4- *
Finder: 594.1-4.
114-M Navicula acutirostris Hustedt Plate 474/11-14
Op 114, p 277, f 21.
Holotype:
N17/71. Kamerun, Lagune. lb. 4-
Marked specimens named on index sheet.
Finder: 465-7-8; 521.1 (i-type).
114-15 Navicula praerupta Hustedt Plate 474/19-21
Op 114, p 277, f 22.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
317
Holotype:
N17/68. Kamerun, Lagune. 1.1.
Marked specimens named on index sheet,
Finder: 224.4-5; 348.9 (i-type).
Paratype:
N17/73b. Kamerun, Lagune. 2.6.
Marked specimen named on index sheet.
Finder: 463.1.
114-16 Navicula concirtna Hustedt
Op 114, p 278, f 18.
The taxon is marked on six slides, names on index sheets. Holotype
Nl7/73b. Kamerun, Lagune. 2.6.
Finder: 555-7-4 (i-type).
Isotypes:
N17/73a. Kamerun, Lagune. 2.5.
Finder: 318.1-4.
Paratypes:
N17/78a. Kamerun, Lagune. 3-12.
Finder: 346.4; 643-1-
N17/78b. Kamerun, Lagune. 3.13.
Finder: 494.4-7.
Plate 475/1-4
N17/74b. Kamerun, Lagune. 2.8.
Finder: 529-1.
Nl5/64■ Kamerun-Lag.
A Styrax slide mounted 1912.
Finder: 291.7-8.
114-17 Navicula exiguiformis Hustedt Plate 475/5-7
op 114, p 283, f 23.
Holotype:
N17/74b. Kamerun, Lagune. 2.8.
Marked specimen named on index sheet.
Finder: 314-5 (i-type).
N.B. The type specimen, a frustule, is broken across the centre.
Perhaps Hustedt compounded his illustration using structural parts of both
valve 3.-
This taxon was described a second time, also as "nov. spec." in op
117, p 929, t 42/21-22 (tx 117-43)- However, the description in op 114
precedes the publication in op 117 (1945). It must therefore be considered
as the first formal publication, although it was perhaps not intended by
Hustedt to have an African specimen of doubtful origin as the type.
Krammer & Lange-Bertalot (Naviculaceae, p 66, 1985) include this taxon
as synonym in Navicula decussis 0strup.
114-17a. Navicula exiguiformis forma capitata Hustedt
Op 114, p 283 (no illustration).
Plate 475/8-11
We found two specimens that can be affiliated with this taxon. Both are
marked but unnamed. The following is chosen as lectotype: ~ . ■

318
392/56. Schaalsee. Zarrentiner B. an Zweigen.
Finder: 399-2-5-
Paralectotype:
392/55- Schaalsee. Zarrentiner B. W-Ufer. Sand. 1.
Finder: 369-6.
N.B. It is remarkable that Hustedt did not record this taxon in op
126, 1950, nor did we find it in his personal records of the Schaalsee
diatom flora.
114-18 Navicula densa Hustedt Plate 475/12-l6
Op 114, p 284, f 28.
The taxon is marked on three slides and recorded on index sheets. Holotype:
NI7/69• Kamerun, Lagune. 1.2.
Finder: 523.6-9 (i-type).
Isotypes:
N17/70. Kamerun, Lagune. 1-3. N17/68. Kamerun, Lagune. 1.1.
Finder: 557-9- Finder: 519.1; 586.3.
114-19 Navicula constans Hustedt Plate 476/1-5
Op 114, p 284, f 13-
Holotype:
N14/33- Obenshe. 66.
Marked specimens named on index sheet and on the label.
Finder: 404-3; 413-4-7; 467-7 (i-type); 586.8-9.
114-20 Navicula porifera Hustedt Plate 474/l5-l8
Op 114, p 284, f 25-
Holotype:
NlO/55- Breiter Lucin. 13 m. 16.8.24-
Marked' specimen named on the label.
Finder: 555-7 (i-type); 581.1.
Isotype:
Nll/76. Breiter Lucin. 13 m. 16.8.24.
Marked specimen named on index sheet.
Finder: 465.8.
114-21 Navicula clementioides Hustedt Plate 476/6-10
Op 114, p 285, f 19-20,
As lectotype is here proposed:
Nll/59- Schalkenmehrener Maar. 4-4*43- Scirpus.
Marked specimen named on the label.
finder: 470.5 (i-type f 20).
Further slide:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
319
392/56. Schaalsee, Zarrentiner B. an Zweigen.
Marked, unnamed specimen.
Finder: 373-1 (i-type f 19).
114-22 Navicula terebrata Hustedt Plate 477/1-4
Op 114, p 285, f 11.
The taxon is nowhere recorded by its name. We located one specimen that
we can identify with Hustedt's illustration, Hustedt named this specimen
"Nav. decussis Ostr." This is here taken as lectotype:
Nll/75- Breiter Lucin. 9m. 14.8.24.
Finder: 408.3-6.
N.B. In op 122, p 96, Hustedt synonyraizes this taxon with and includes
it in Navicula exiguiformis Hustedt (see tx 114-17 and 117-43)- - Krammer
and Lange-Bertalot (Naviculaceae, p 66, 1985) include this taxon as synonym
in Navicula decussis 0strup.
114-23 Navicula interglacialis Hustedt Plate 477/5-7
Op 114, p 286, f 27.
Holotype:
N10/17- Oberohe 43-
Marked specimen named on the label.
Finder: 340.6.
114-24 Navicula exigua var. signata Hustedt Plate 476/11-15
Op 114, p 287, f 14-
Holotype:
Nel/89. Schmaler Lucin. 13 m. 16.8.24.
Marked specimen named on index sheet.
Finder: 407-6 (i-type).
Further slide:
N2/89- Schaalsee, Zarrentiner Becken. Insel. Phragmites.
Marked specimen named on the label.
Finder: 286.9.
114-25 Navicula anglica var. signata Hustedt Plate 477/8-14
Op 114- p 287, f 26.
Holotype:
Nll/75- Breiter Lucin. 9m. 14-8.24.
Marked specimens named on the label.
Finder: 313-4; 525-6-9 (i-type); 525-8; 529-2-5; 586.4-7-
N.B. Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 87,
1985) recombines this taxon: Navicula pseudanglica var. signata (Hustedt)
Lange-Bertalot.

320
Op. 115. A. Schmidts Atlas der Diatomaceenkunde, Heft 95, t 377-380, 1944-
115-1 Cymbella gibberula Hustedt Plate 477/15-17
Op 115, t 377/7.
Description included in plate explanation.
Holotype:
Tl/72. Columbia River. Oregon.
This is a single mount with the i-type.
Op. 116. A. Schmidts Atlas der Diatomaceenkunde, Heft 113-115, t 449-460,
1944.
116-1 Stictodiscus robustus Hustedt Plate 478/1-3
Op 116, t 449/12.
Description included in plate explanation.
Holotype:
C3/87. Barbados.
A single mount, unnamed, the i-type which has a single central labiate
process.
116-2 Stictodiscus ictelegans Hustedt Plate 479/1-3
Op 116, t 449/13-14.
Description included in plate explanation.
Holotype:
C3/97. Oamaru.
A -slide with the two illustrated specimens singly mounted. On the label:
"Stictodiscus?"
116-3 Stictodiscus amoenus Hustedt Plate 480/1-2
Op 116, t 449/l5r17- Description included in plate explanation.
Holotype:
C2/64. Kami chew. Rufiland.
A single mount with the specimen illustrated on figs 15-17-
116-4 Stictodiscus pulcherrimus Hustedt Plate 481/I—3
Op 116, t 450/1.
Description included in plate explanation.
Holotype:
C2/36. Oamaru.
A single mount with the illustrated specimen. It is named on the label
"Stictodiscus caraibicus T & W".
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
321
116-5 Stictodiscus splendidus Hustedt Plates 482/1-2, 483/1-8, 484/I-4
Op 116, t 450/2-9.
Description included in plate explanation.
There are several slides, all single mounts, with the specimens illustrated
by Hustedt. Only one bears the taxon's name on its label, the others being
wrongly or not named. This one slide is selected as lectotype:
C2/65. Oamaru.
I-type f 2, on the label reference to "A.S. Atl. 450,2".
Isolectotypes:
C3/96. Oamaru.
I-type f 3-
C4/3. Oamaru.
I-type f 5.
C3/95- Oamaru. Neuseeland.
A mount by E. Debes of Leipzig with four Stictodiscus valves, among them
the i-type of f 7-
C2/63- Oamaru. Neuseeland.
Another mount by E. Debes, with three valves, two of which are the i-types
of f 8 and f 9-
116-6 Stictodiscus subsplendidus Hustedt Plate 485/I-2
Op 116, t 451/1.
Description included in plate explanation.
Holotype:
02/80. Indischer Ozean. 17°45'S. 53o39l0. A.S. Atl. 451,1-
A single mount with the taxon's name on the label.
116-7 Stictodiscus bathyomphalus Hustedt Plate 486/I-4
Op 116, t 451/11.
Description included in plate explanation.
Holotype:
C3/70. Simbirsk.
An unnamed single mount with the illustrated specimen.
116-8 Stictodiscus hardntaniamis forma trigona Hustedt Plate 487/1-2
Op 116, t 452/2. See also tx 87A-5 and plate 294/2.
This taxon has inadvertently slipped into this book in duplicate. The
original and now valid entry is tx-87A-5- This was noticed only when the index
was compiled, after the main parts were at the printer's, making a change
impossible. One of the causes is the rather obscure contribution of Hustedt
in Wetzel where our taxon was first published (op 87A). This came rather
late to our attention, after the entry in op 116 as tx 116—8 had been
included. This latter is also the only reference in VanLandingham (Catalogue
7, p 3778, 1978), to whom op 87A was unknown. All our taxa were compared
in this catalogue after they had been extracted from the original papers;
there was therefore no indication to my mistake.

322
116-9 Stictodiscus venustus Hustedt Plates 488/1-2, 489/I
Op 116, t 452/3-6-
Description included in plate explanation.
The two valves illustrated on figs 3-4 and 5-6 are on two single mounts,
both with the taxon's name on the labels. As lectotype is here taken:
C2/77. Indischer Ozean. 17°45'S. 53°39'0. A.S. Atl. 452,3-4-
Isolectotype:
C2/78. Indischer Ozean. 17°45'S. 53°39'0. A.S. Atl. 452,5.6.
116-10 Stictodiscus grunowii forma trigona Hustedt Plate 480/3
Op 116, t 452/11.
Validating diagnosis: This taxon differs from the nominate forma by its
triangular shape.
Holotype:
C3/2I. Jeremie. Haiti.
A single mount with the illustrated valve, unnamed.
116-11 Stictodiscus parallelus var. tenuis Hustedt Plate 489/2-3
Op 116, t 453/17.
Description included in plate explanation.
Holotype:
C3/66. Gazelle-Exped. Lotung No. 96- 121°52'6.L. 9°57's.Br.
A single mount, unnamed, mounted by E. Debes.
116-12 Stictodiscus minutus Hustedt Plate 490/1
Op 116, t 453/18.
Description included in plate explanation.
Holotype:
C2/75- Barbados, Mount Hillaby.
A single mount with the i-type, named on the label with reference to
"A.S. Atl. 453,18".
116-13 Auliscus tenuistriatus Hustedt Plates 490/2-3, 49l/l-3, 492/1
Op 116, t 453/28-30-
Validating description: Valves circular to very broadly elliptic, about
80-90 um in diameter, rather delicately striated.
The two ocelli with broad, thickly silicified
rims.
Of the three slides on which we found the specimens cited below none bears
the taxon's .name. One refers to "A.S. Atl. 125,9" to which Hustedt alludes
in the plate explanation. This latter is here taken as lectotype:
F3/56. Oamaru.
A single mount, i-type f 30.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqweSirambler.ru
323
Isolectotypes:
F3/63- Oamaru. Neuseeland.
A slide with three picked valves mounted by E. Debes, of which one valve
is represented by f 28 and another by f 29.
F3/76. Oamaru. Neu-Seeland.
A "Typenplatte" with twelve valves mounted by A. Elger.
116-14 Auliscus compactus Hustedt Plate 492/2-4
Op 116, t 453/32-33.
Validating description: Valves nearly circular about 70 urn in diameter,
structure consisting of rows of small puncta. The
ocelli are in an elevated position, along with
the central portion of the valve.
Holotype:
Fl/15. Smolkowo, Russland.
This is a single mount with the taxon's name on the label.
116-15 Auliscus similis Hustedt Plates 493/1-3, 494/1-4
Op 116, t 454/14-15.
Description included in plate explanation.
The two illustrated specimens are from two different localities. Both are
on single mounts named "Auliscus pruinosus Bail." to which Hustedt also
refers in his plate explanation. As lectotype is proposed:
F2/8. Bay von Pensacola, Florida.
I-type f 15.
The other slide:
F2/9- Victoria, Brasilien.
I-type f 14.
116-16 Aulacodiscus insignis Hustedt Plated 495/1-3, 496/1-3
Op 116, t 458/3-6.
Description included in plate explanation.
Therfj are four slides, all single mounts vith the taxon's name on their
labels. As lectotype is chosen:
E2/61. Kamichew, Ruftland.
I-type f 5 which is also referred to on the label.
Isolectotypes:
E2/62. Kamichew, Ruftland.
I-type f 6 which is also recorded on the label.
E2/63. Kamichew, Ruftland.
I-type f 4.
E2/64. Kamichew, Ruftland.
Probably i-type f 3*

324
116-17 Aulacodiscus excavatus var. robusta Hustedt Plates 497/1-2,
498/1-2, 499/1-2
Op 116, t 459/5-8, 460/1-2.
Description included in plate explanation.
As lectotype is chosen:
E3/5- Kusnetzk.
A slide with three picked specimens named on the label. One valve is
i-type of figs 5-6 on plate 459, another that of figs 1-2 on plate 46O.
Further slide:
El/29- Simbirsk.
A slide with five picked specimens named "Aulacodiscus excavatus A.S. var."
on the label. One specimen is the i-type of figs 7-8.
116-18 Aulacodiscus subexcavatus Hustedt Plates 500/1-3, 50l/l-6,
502/1-2, 503/1-2
Op 116, t 460/3-13-
Description included in plate explanation.
Also this taxon was originally described from two different localities.
Therefore the following slide is here selected as lectotype:
E2/82. Kamichew, Ruftland.
A single mount named on the label, i-type f 11—13-
Isolectotypes:
E2/80. Kamichew, Ruftland.
Single mount with name on the label, i-type f 3-5-
E2/81. Kamichew, Ruftland.
Single mount named on the label.
Further slides:
Ztl/l9. Cementstein und Moler, Mors, Danemark.
This is a "Typenplatte" mounted by P. Klavsen, Odense, Denmark. It contains
the i-type of figs 6-8.
Ztl/20. Cementsten og Moler, Mors.
Another "Typenplatte" of Klavsen, containing the i-type of figs 9-10.
Op. 117. Diatomeen aus Seen und Quellgebieten der Balkanhalbinsel. Arch.
Hydrobiol. 40, 867-973, 1945.
117-1 Cyclotella plitvicensis Hustedt Plate 504/1-6
Op 117, p 899, t 38/5-6.
Holotype:
Acl/70. Plitvicer Seen. 4- Moos.
Unmarked specimens, the taxon is frequent, named on the label.
N.B. In op 121, p 204, Hustedt synonymizes this taxon with and includes
it in Cyclotella distinguenda Hustedt (see tx 59-0*
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
325
117-2 Cyclotella stelligeroides Hustedt Plate 504/7-H
op 117, p 899, t 42/68-69.
Holotype:
M2/43. Plitvicer Seengebiet. 11. Wasserfall.
Marked specimens named on the label.
Finder: 518-3-6 (a frustule and a valve).
117-3 Cocconeis semiaperta Hustedt Plate 504/13-16
Op 117, p 905, t 39/1-3.
Holotype:
M2/43- Plitvicer Seengebiet. 11. Wasserfall.
Marked specimen named on the label.
Finder: 579-1 (i-type f 1-2).
117-4 Achnanthes minuscula Hustedt Plate 505/I—19
Op 117, p 907, t 39/8-12.
There are no specimens on the slides with material from Pre spa Lake which
are marked. The taxon is by no means frequent, but single specimens that
can be easily identified can be found on each of the existing slides. As
lectotype is here proposed a slide with the finder positions of some
unmarked specimens included:
Nl/33. Prespasee, Macedonien.
Finder: 320.4; 349-8; 530.2-3; 531-2.
For comparison a marked and named specimen from North Germany is here
included from the following slide (cf. op 126, p 346):
Ma3/2. Schaalsee. Priestersee. Ceratophyllum.
Finder: 254.2.
117-5 Achnanthes fonticola Hustedt Plate 505/20-31
op 117, p 907, t 40/3-6.
Holotype: ^' -
Nl/89. Krka-Quelle bei Laibach...*Moos. 2.
Marked specimens named on the label.
Finder: 314-7-8; 344-9; 405-5-6;' 464.2-5; 494-3; 554-7.
N.B. Lange-Bertalot & Ruppel (Arch. Hydrobiol., Suppl. 60, p 6, 1980)
synonymize this taxon with and include it in Achnanthes delicatula sspec.
hauckiana (Grunow) Lange-Bertalot & Ruppel.
117-6 Achnanthes clevei var. balcanica Hustedt Plate 505/32-41
Op 117, p 908, t 39/34-37.
The only slide with marked, unnamed specimens of this taxon must be
considered as the holotype:
397/12. Ochrida-See. Grund. 3.
Finder: 401.7; 410.9; 460.9; 468.6-9; 526.2-3; 584-3-

326
117-7 Achnanthes clevei var. balcanica forma rostrata Hustedt Plate 504/12
Op 117, p 908, t 39/38-39.
Regretfully this taxon could nowhere be located. On the accompanying list
it is recorded from Chara mud, but no slide made with the two samples
contains any marked specimen of this forma.
117-8 Achnanthes procera Hustedt Plate 506/I-I6
Op 117, p 908, t 39/26-31.
Holotype:
Ma3/54- Borke-See, Herzegowina. Litoral.
Marked specimens named on the label.
Finder: 377-2; 407-5-6; 466.2; 491-7-
Further slide:
N17/47. Mostar, Altwasser der Bunaquelle.
Marked specimen named on index sheet.
Finder:. 409-2.
117-9 Achnanthes jakovljevicii Hustedt Plate 506/17-22
Op 117, p 909, t 39/13-17-
Holotype:
Mal/94. Plitvicer Seen. Moos. 10.
Marked specimens named on the label.
Finder: 498.6; 500.6.
117-10 Achnanthes plitvicensis Hustedt Plate 506/29-37
Op 117, P 909, t 39/22-25-
Holotype:
Ma2/64- Plitvicer Seen. Moos. 6.
Marked specimens named on the label.
Finder: 224-5; 372.8; 428.6-9.
N.B. The image of the specimen at 372.8 appears somewhat distorted
due to splintered glass of the diamond ring in the cover glass.
117-11 Achnanthes semiaperta Hustedt Plate 506/23-28
Op 117, p 910, t 39/4-7-
Holotype:
Ma2/75. Plitvicer Seen. 24-
Marked specimens named on the label.
Finder: 554-2-5; 558.4-5-
117-12 Diploneis modica Hustedt Plate 506/38-41
Op 117, P 912, t 42/23-24.
The taxon was described from two different localities. Therefore the
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe*':
327
following lectotype is here selected:
04/79- Ochridasee, an Chara.
Marked specimen named on index sheet.
Finder: 347-8-9 (i-type f 24).
Further slide:
N12/39. Prespa-See. Ufer. 1.
Marked specimen named on the label.
Finder: 503-7 (i-type f 23).
117-13 Stauroneis palustris Hustedt Plate 507/1-5
op 117, p 914, t 42/30-32.
Tat-following slide is here selected as lectotype:
206/1. Katlanowo-See. Macedonien. a.
Marked, unnamed specimens.
Finder: 313-1 (i-type f 30); 371-5-6 (i-type f 32).
Isolectotype:
206/2. Katlanowo-See. Macedonien. a.
Marked, unnamed specimen.
Finder: 496.6 (i-type f 31).
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 116, 1985) include
this taxon as synonym in Stauroneis tackei, see tx 110-1.
117-14 Stauroneis smithii var. elliptica Hustedt Plate 506/42-46
Op 117, p 914, t 42/34-36.
Holotype:
N17/44. Ochridasee, an Chara.
Marked specimens named "Staur. Smithii var." on index sheet.
Finder: 285.8; 311-5; 340.5-6; 436.1-4; 492.2.
N.B. In op 166, p 8lly f 1157h-k, Hustedt synonymizes this taxon with and
includes it in Stauroneis smithii var. borgei (Manguin) Hustedt.
117-15 Navicula mutica var. gibbula Hustedt Plate 507/6-8
op 117, p 915, t 41/41.
Holotype: ,
N5/88. Krka-Quellen bei Laibach. 3.
Marked specimen (in very oblique position) named on the label.
Finder: 463-4-
117-16 Navicula ventraloides Hustedt Plate 507/9-13
Op 117, p 916, t 41/25-28.
There are four slides with marked specimens named on the labels. Among
these the following lectotype is chosen:
M2/43. Plitvicer Seengebiet. 11. Wasserfall.
Finder: 441.7; 490.2-5-

328
Paralectotypes:
N8/92. Plitvicer Seen. 15- N8/94- Plitvicer Seen. 4. Moos.
Finder: 373*6. Finder: 582.1-2.
N8/93- Plitvicer Seen. 17-
Finder: 487.6.
N.B. In op 170, p 129j Hustedt synonymizes this taxon with and includes
it in Navicula stroemii Hustedt (see tx 75—3)*
117-17 Navicula modica Hustedt Plate 507/17-21
Op 117, p 916, t 41/21-23.
The following slide is here selected as lectotype:
NI7/46. Ochridasee. Kalkschlamm.
Marked specimens named on index sheet.
Finder: 46O.I; 46O.9.
Paralectotype:
N17/44- Ochridasee, an Chara.
Marked specimen named on index sheet.
Finder: 462.8.
Further slide:
S3/38. Prespa-See. Ufer. 1.
Marked specimens named on the label.
Finder: 429-8; 437-1-2.
117-18 Navicula rotunda Hustedt Plate 507/14-16
Op 117, p 916, t 41/29.
Holotype:
N17/48. Prespasee, Macedonien.
Marked specimen named on index sheet.
Finder: 287-2.
117-19 Navicula subrotundata Hustedt Plate 507/26-35
op m, p 917, t 41/30-33.
Among the many slides with marked specimens all named either on the labels
or on index sheets, the following is designated as lectotype:
N17/44- Ochridasee, an Chara,
Finder: 281.6; 374-5; 378.4 (2 specimens); 645-8-9-
Paralectotypes:
N17/46. Ochridasee. Kalkschlamm. N17/49- Ochridasee. Kalkschlamm.
Finder: 253-7-8. Finder: 468-7; 561.2.
Further slides:
N17/45. Plitvicer Seen. 23. N12/24- Prespasee. Macedonien.
Finder: 349-2-5- Finder: 410.2-3.
N8/33- Plitvicer Seen. Moos. 1.
Finder: 433-9; 459-6; 520.9; 550.4-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
329
117-20 Navicula mollicula Hustedt Plate 507/36-43
Op 117. p 917- t 41/34-36.
As lectotype is here proposed:
N17/48. Prespasee, Macedonien.
Marked specimen named on index sheet.
Finder: 259.8-9.
Isolectotype:
N12/24. Prespasee, Macedonien.
Marked specimen named on the label.
Finder: 409.8.
Further slide:
N8/33- Plitvicer S een. Moos. 1.
Marked specimen named on the label.
Finder: 614-4-5-
N.B. In op 171. p 272, f 1401, Hustedt synonymizes this taxon with
and includes it in Navicula utermoehlii Hustedt (see tx 89-49).
117-21 Navicula ochridana Hustedt Plate 507/22-25
Op 117, p 917, t 41/44-45-
The following lectotype is here designated:
N17/44. Ochridasee, an Chara.
Marked specimen named on index sheet.
Finder: 257.2-5.
The other specimen the conspecifity of which Hustedt doubted in the
protologue:
N12/39- Prespa-See. Ufer. 1.
Marked specimen named "Navicula ochridana Hust." on the label.
Finder: 473.2-5.
117-22. Navicula inclinata Hustedt Plate 508/1-3
Op 1.17. p 917. t 41/17-
Halotjpe:
NlO/%. St. Naum, Quelle, Ochrida-See. Mcos. 1.
Marked specimen named on the label.
Finder: 611.5-6.
117-23. Navicula demissa Hustedt Plate 508/4-6
Op 117, p 918, t 41/5-
Holotype:
N12/38. St. Naum am Ochridasee, Teich,
Marked specimen named on the label.
Finder: 500-7-8.
N.B. Lange-Bertalot & Rumrich (Proc. 6th Diat. Symp., R.Ross, ed.,,
p 136, 198l) synonymise this taxon with and include it in Navicula
subminuscula Manguin.

330
117-24 Navicula submuralis Hustedt Plate 508/7-9
Op 117, p 918, t 41/37.
Holotype:
N17/44- Ochridasee, an Chara.
Marked specimen named on index sheet.
Finder: 288.8.
117-25 Navicula omissa Hustedt Plate 508/16-18
Op 117, p 918, t 41/6.
Holotype:
N5/78. Plitvicer Seen. 16.
Marked specimen named on the label.
Finder: 372.7-8.
N.B. Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 82,
1985) recombines this taxon: Navicula monoculata var. omissa (Hustedt)
Lange-Bertalot.
117-26 Navicula submitis Hustedt Plate 508/19-21
Op 117, p 919, t 41/10.
Holotype:
N12/39. Prespa-See. Ufer. 1.
Marked specimen named on the label.
Finder: 500.4-5*
117-27 Navicula mitis Hustedt Plate 508/10-15
op 117, p 919, t 41/11-14.
The.following slide is here proposed as lectotype:
N5/78. Plitvicer Seen. 16.
Marked specimens named on the label.
Finder: 38O.I; 407-4-
Paralectotype:
N5/79- Plitvicer Seen. 4- Moos."^
Marked specimen named on the label.
Finder: 459-6-9-
Further slide:
NI7/46. Ochridasee. Kalkschlamm.
Marked specimen named on index sb.eet.
Finder: 341-9-
117-28 Navicula arvensoides Hustedt Plate 508/22-24
Op 117, P 919, t 41/7-
Holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler. ru
331
N17/50. -Macedonien. Quelle auf dem Babunapafi.
Unnamed specimen in a circle not recorded on the index sheet.
Finder: I98.I.
N.B. In Hustedt[s illustration the density of the transapical striae
is 46 in 10 um. Ve were barely capable to resolve a few of the central
striae only.
117-29 Navicula permitis Hustedt Plate 508/25-27
Op 117, p 919, t 41/8-9.
Holotype:
N6/33- Plitvicer Seen, 17.
Marked specimens named on the label.
Finder: 313.1-2 (both i-types).
N.B. The transapical striae had remained invisible to Hustedt. We were
able to photograph them and counted 36 in 10 urn only.
Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 57, 1985)
recombines this taxon: Navicula atomus var. permitis (Hustedt)
Lange-Bertalot , an opinion that will probably not be shared by everybody.
117-30 Navicula subprocera Hustedt Plate 508/28-29
Op 117, p 920, t 41/1.
Holotype:
NI7/47. Mostar, Altwasser d. Bunaquelle.
Marked specimen (in very oblique position) named on index sheet.
Finder: 288.7-8.
117-31 Navicula (brockmannii Hustedt var.?) enucleata Hustedt
Plate 508/30-31
Op 117, p 920, t 41/43-
Holotype:
N5/78. Plitvicer Seen. 16.
Marked specimen named "N. enucleata" on the label.^
Finder: 435-2.
N.B. In his list of new taxa, on p 968 in op 117, Hustedt carried this
taxon under the letter e indicating that he considered this as a species
rather than a variety. - In op 170, p 93, however, Hustedt includes this
taxon in Navicula brockmannii Hustedt (tx 82-6).
1"
117-32 Navicula frustulum Hustedt Plate 508/35-39
op 117, p 921, t 41/18-19.
Holotype:
N10/86. St. Naum, Quelle, Ochrida-See. Moos. 4.
Marked specimens named "N." on the label.
Finder: 551-7; 580.1-4.
N.B. In op 171, p 184, Hustedt states that this taxon "belongs also

332
here", i.e. to Navicula monoculata Hustedt (see the next taxon 117-33),
although he does not list Nav. frustulum as a synonym. There he also
complains about the distorted rendition of the figures of tx 117-32 in
op 117. We can confirm that the original drawings of which there are
photographed copies in the collection differ considerably from the printed
illustrations as far as the central raphe parts are concerned. The stria-
tion and the raphe branches erroneously drawn straight by Hustedt are
identical with the prints, however,
117-33 Navicula monoculata Hustedt Plate 508/40-41
Op 117, P 921, t 41/4.
Holot jrp.e:
N17/50- Macedonien. Quelle auf dem Babunapaft.
Marked specimen named on index sheet.
Finder: 521.8-9.
117-34 Navicula obsita Hustedt Plate 508/32-34
Op 117, p 921, t 41/2.
Holotype:
N5/78. Plitvi cer Seen. 16.
Marked specimen named on the label.
Finder: 381.1-4
117-35 Navicula bacilloides Hustedt Plate 509/1-5
op 117, p 922, t 42/29.
As lectotype is here selected:
N12/71. Babunapafl. Macedonien.
Marked specimens named on the label.
Finder: 311-4-5; 368.3; 369-4-7; 399.4; 430.2; 489.5-6.
Isolectotype:
N17/50. Macedonien. Quelle auf dem Babunapafi.
Marked specimens named on index sheet.
Finder: 252.8; 282.9; 283.6; 459-9-
117-36 Navicula praeterita Hustedt Plate 509/6-8
Op 117, p 923, t 42/5-8.
Only one specimen of this taxon was found, for which reason it must be
considered as the holotype:
N8/93- Plitvicer Seen. 17-
Marked specimen named on the label.
Finder: 582.2 (i-type f 8).
117-37 Navicula certa Hustedt Plate 509/9-13
Op 117, p 924, t 42/2-3-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe*':
333
As lectotype is here chosen:
N12/23. St. Naum am Ochridasee. Quelle. 4-
Marked specimen named on the label.
Finder: 282.6.
Paralectotype:
N10/86. St. Naum, Quelle, Ochridasee. Moos. 1.
Marked specimen named on the label.
Finder: 311.5-6.
N.B. VanLandingham (Catalogue 5, P 2463, 1975) renames this taxon:
Navicula splendicula VanLandingham, because of Nav. certa Meister 1935-
117-5? Navicula carniolensis Hustedt Plate 508/42-43
Op 117, p 925, t 41/16.
Holotype:
Nl/89- Krka-Quelle bei Laibach. Moos. 2.
Marked specimen named on the label.
Finder: 344-9-
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 60, 19§5) include this
taxon as synonym in Navicula tenelloides Hustedt (tx 94-64).
117-39 Navicula oppugnata Hustedt Plate 510/1-5
op 117, p 925, t 42/1.
Holotype:
206/21. Ochrida-See. Phragmites. a.
Marked, unnamed specimen.
Finder: 490.1 (i-type).
Paratype:
N17/49* Ochridasee. Kalkschlamm.
Marked specimens named on index sheet.
Finder: 615-2 (2 specimens).
117-40 Navicula stankovicii Hustedt Plate 509/14-20
op 117, p 926, t 42/9-11.
Holotype:
N8/10. Ochrida-See. Phragmites. b.
The taxon is frequent on this slide, unmarked, named on the label.
Further slide:
N12/25- Skutari-See. PI.
Marked specimen named on the label.
Finder: 338.5-6.
117-41 Navicula plitvicensis Hustedt Plate 510/6-11
op 117, p 926, t 42/15-16.
There are two slides with marked specimens named on the labels. The follow-

334
ing shall be the lectotype:
W2/63- Plitvicer Seen. 21.
Finder: 252.4; 440.9; 586.2; 589.1.
Further slide:
N6/58. Gavanovac-See. Plitvice. 14.
Finder: 284-5 (i-type f 16?).
117-42 Navicula subgastriformis Hustedt Plate 5H/1-4
Op 117, p 928, t 42/13-H.
We found two marked specimens that can be combined with this taxon,, both
unnamed. Of these the following may be the lectotype:
Nl/33* Prespasee, Macedonien.
Finder: 321.8.'
Isolectotype:
NI7/48. Prespasee, Macedonien.
Finder: 411.1.
On the index sheet this circle is furnished with the remark "zu exigua?".
(117-43 Navicula exiguiformis Hustedt)
Op 117, p 929; t 42/21-22.
This taxon is here declared as "nov. spec". But the description in
op 114j p 283, 1944, precedes the publication in op 117 and must therefore
be considered as first and valid publication. See tx 114-17-
117-44 Navicula jakovljevicii Hustedt Plate 5*1/5-14
Op 117, p 930, t 40/17-18.
There are two slides with marked specimens named on their labels. Of these
the following is selected as lectotype:
N4/6O. St. Naum, Quelle. Ochrida-See. Moos. 2.
Finder: 224.2- 309-5; 311-4; 338-3; 398-7; 518-7 (i-type f 17?); 519.2;
583.1.
Isolectotype:
N4/59- Quelle bei St- Naum, Siidslavien. 2.b.
Finder: 373-9; 410-5-8; 435-8; 468.1-2.
117-45 Caloneis silicula forma claviceps Hustedt Plate 512/1-2
Op 117, p 934, t 42/26.
Holotype:
Nb2/6. Macedonien. Quelle auf dem Babunapafi.
Marked specimen (in a very oblique position) named on the label.
Finder: 405-9-
117-46 Caloneis macedonica Hustedt Plate 512/3-9
Op 117, p 934, t 42/27-28.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqi
335
As lectotype is here designated:
Ma3/54. Borke-See, Herzegovina, Litoral.
Marked specimens named on the label.
Finder: 316.2-3; 401.6; 436.1-4; 441-7; 461.7; 466.9.
Further slide:
N17/50. Macedonien. Quelle auf dem Babunapali.
Marked specimens named on the label.
Finder: 227-7; 3U-9; 559-1-4-
117-47 Cymbella hybridiformis Hustedt Plate 513/1-7
Op 117, p 937, t 40/23-25.
Among the three slides with the .fsp-ecies name on their labels there are
two with marked specimens. Of these the following is chosen as lectotype:
Ma2/64- Plitvicer Seen. Moos. 6.
Finder: 281.9; 282.8; 285-4-7; 314-1-2; 373-4-7; 464-2-5.
Paralectotypes:
Mal/94- Plitvicer Seen. Moos. 10.
Finder: 493-7-
T3/12. Plitvicer Seen. 20.
The taxon is very frequent, unmarked.
N.B, Still in op 117, p 973, "Berichtigungen und Nachtrage", Hustedt
synonymizes this taxon with and includes it in Cymbella similis Krasske.
117-48 Gomphonema curtum Hustedt Plate 513/8-13
Op 117, p 939, t 42/37-43-
There are no marked specimens, nor does the taxon's name appear anywhere.
It is rather abundant, however, on the following slide which is therefore
selected here as lectotype:
N12./38. St. Naum am Ochridasee. Teich.
N.B. Lange-Bertalot (Bot. Notiser 133, p 589, 1980) includes this taxon
as synonym in Gomphonema minutum (C.A. Agardh) C.A. Agardh.
117-49 Gomphonema irroratum Hustedt Plate 513/14—18
Op 117, p 940, t 42/47-49-
Holotype:
S2/51. Ochridasee. Phragmites. c.
Marked specimens named on the label.
Finder: 466.3 (i-type f 47); 469-1 (i-type f 48); 494-3-6 (i-type f 49).
117-50 Gomphonema macedonicum Hustedt Plate 512/10-11
Op 117, p 941, t 42/44-
Holotype:
S3/38. Prespa-See. Ufer. 1.
Marked specimen named on the label.
Finder: 338.8-9-

336
117-51 Gomphonema olivaceum var. fonticola Hustedt Plate 512/12-18
Op 117, p 942, t 40/19-22.
There are two slides with marked specimens which are labelled "Gomphonema
olivaceum var." Of these the following is proposed as lectotype:
S2/29. St. Naum am Ochridasee. Quelle. 4.
finder: 256.6; 370.9; 490.3-6; 549.8; 581.1-2; 581.3-6 (3 specimens).
Paralectotype:
S2/30. St. Naum am Ochridasee. Quelle. 5>
Finder: 465.6; 467-5-8; 469.8-9.
117-52 Nitzschia speciosa Hustedt Plate 514/1-6
Op 117, p 945, t 43/1-3.
Two slides with material from the same sample bear the taxon's name on
their labels. No specimen of this rather abundant species is marked. The
following is here chosen as lectotype:
W3/84. Quelle am Ochrida-See. Ostufer. 1.
Isolectotype:
N10/68. Quelle am Ochrida-See, Ostufer. 1.
117-53 Nitzschia macedonica Hustedt Plate 513/19-24
Op 117, p 946, t 43/6-12.
The taxon is nowhere marked or recorded by name. However^ it occurs in
masses on a slide in a box with Nitzschia slides, and on the right-hand
label is written "Nitzschia". This shall be the lectotype:
W5/51. Ochrida See, bei St. Naum. An iiberrieseltera Stein.
N.B. The gap in the row of fibulae indicating the presence of a central
nodule is not always equally distinct.
117-54 Nitzschia balcanica Hustedt Plate 515/l-H
Op 117, p 947, t 43/4-5-
The taxc& is nowhere named. There arc two slides with marked specimens
of which the following is selected as lectotype:
206/l. Katlanowo-See. Macedonien. a.
Finder: 223.6; 311.1.
Isolectotype:
206/3. Katlanowo-See. Macedonien. a.
Finder: 437-7.
117-55 Nitzschia jucunda Hustedt Plate 515/12-13
Op 117, p 947, t 43/13.
Holotype:
W2/63- Plitvicer Seen. 21.
Marked specimen named on the label.
Finder: 349-5-8.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej':
337
Op. 120. Die Diatomeenflora des Beckens. In: A. Thieneraann, Die Tierwelt
eines astatischen Wasserbeckens in vier aufeinanderfolgenden Jahren.
Schweis. Zeitschr. f. Hydrol. 11, 41-48, 1948.
120-1 Navicula pseudoexilissima Hustedt Plate 5l6/l-8
Op 120, p 46, f 5-6-
Holotype:
N12/82. PIon. Garten-Becken. Juli 1947-
Marked specimens named on the label.
Finder: 375-9; 435.6; 440-6; 441-6.
N.B. Hustedt did not resolve the structure; in our micrographs we
counted 42-44 transapical striae in 10 urn.
Lange-Bertalot & Rumrich (Proc. 6th Diat. Symp., R. Ross, ed., p 143,
1981) synonymise this taxon with Navicula minuscula var. muralis (Grunow)
Lange-Bertalot.
120-2 Nitzschia piscinarum Hustedt Plate 516/9-12
Op 120, p 48, f 14-15.
There are two slides with marked, unnamed specimens of which I designate
as lectotype:
391/58. Plon. Zementbecken. Boden. 16.7-45-
Finder: 585-5-
Paralectotype:
W8/92. Plon. 16.11.45- Zement-Becken. Wandbelag.
Finder: 438.2.
Op. 121. Die Diatomeenflora diluvialer Sedimente bei dem Dorfe Gaj bei
Konin im Warthegebiet. Schweiz. Zeitschr. f. Hydrol. 11, l8l-209, 1948.
Initial remark:
The magnification given with the illustrations of this paper (xlOOO) must
be corrected to read approximately xl500.
121-1 Achnanthes exiguiformis Hustedt Plate 517/6-7
Op 121, p 203, f 4-5-
Holotype:
178/64. Gaj, Konin, Warthegau. 13-5-15.2 m. b.
Marked, unnamed specimen in very oblique position.
Finder: 399-5-

338
121-2 Fragilaria construens var. binodis forma gibba Hustedt. Plate 517/8-9
Op 121, p 204, f3-
Holotype:
P3/4- Gaj, Konin. Warthegau. 13-5 m - 15.2 m. a.
Marked specimen named on the label.
Finder: 461.3.
121-3 Navicula explanata Hustedt Plate 517/1-5
Op 121, p 207, f 7-8.
Holotype:
N2/91. Gaj, Konin, Warthegau. 11.8-13-5 nu a.
Marked specimens named on the label.
Finder: 371.6 (i-type f 7); 404-5 (i-type f 8).
121-4 Pianularia microstauron var. brebissonii forma lata Hustedt
Plate 517/10-12
Op 121, p 208, f 11-12.
There are two slides with marked specimens which are named on the labels.
Of these the following shall be the lectotype:
P3/4. Gaj, Konin. Warthegau. 13*5 m - 15-2 m. a.
Finder: 372.8 (i-type f 12).
Isolectotype:
P3/5- Gaj, Konin. Warthegau. 13-5- 15-2 m. a.
Finder: 530-6 (probably the i-type of f 11).
Op. 122. Suftwasser-Iliatomeen aus dem Albert-Nationalpark in Belgisch-Kongo.
Expl. du Pare Natl. Albert. Mission H. Damas (1935-1936) 8, 1-199, 1949-
Initial remark:
As far as the Belgian Congo paper is concerned, Hustedt hardly ever
noted the names of his tapca on the slide labels or on index sheets. We
must therefore heavily depend on his records of localities, looking for
encircled specimens on the cover glasses of the relevant slides. One of
the necessary consequences is that most of the taxa can be typified only
by designating lectotypes, unless a taxon is rare enough to permit the
identification with an illustration, or is limited to the occurrence on
one slide only.
122-1 Stephanodiscus damasii Hustedt Plates 518/1-4, 519/1-5
Op 122, p 57, t 1/2-5-
In the absence of a designated type I select as lectotype:
241/71. Belg. Kongo. 172. Eduardsee, PI. Bugazia, 15 m.
The taxon is unmarked but abundant on the slide.
SCANNED MJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweSrambler.
339
122-2 Fragilaria africana Hustedt Plate 520/1-5
Op 122, p 62, t 2/29-34.
Lectotype:
242/24. Belg. Kongo. 141 ■ Eduardsee, Kamande, Chara.
Marked specimens.
Finder: 310.8; 320.2-5; 499-6-9; 558.1; 585-2.
122-3 Eunotia montana Hustedt Plate 520/9-14
Op 122, p 66, t 3/13-23-
Lectotype:
244/41a. Belg. Kongo. 42.
Marked specimens (the number refers to the sample number of Damas).
Finder: 371-9; 375-4; 410.4.
Isolectotypes, marked specimens:
244/41b. Belg. Kongo- 42. 244/42. Belg. Kongo. 42.
Finder: 558.6. Finder: 312.9-
122-4 Eunotia damasii Hustedt Plate 521/i-7
Op 122, p 67, t 3/1-12.
Lectotype:
244/34b. Belg. Kongo. 39- Karisimbi-See. +38OO m.
Marked specimens named on the label.
Finder: 287-6-9; 441-3- S'
Isolectotypes:
X7/37- Belg. Kongo. 39- Karisimbi-See. +38OO m.
Marked specimens named on the label.
Finder: 312-9; 403-9-
The following slides are isolectotypes with marked, unnamed specimens:
244/33a- Belg. Kongo. 39-
Finder: 316-5; 432.1; 524-4-
244/33b. Belg. Kongo. 39- Karisimbi-See. +38OO nr.
Finder: 464.2.
244/35a. Belg. Kongo. 39- Karisimbi-See. +38OO m.
Finder: 46O-8; 553-3-
244/35b. Belg. Kongo. 39- Karisimbi-See. +38OO m.
Finder: 469-8; 470-2,
244/36. Belg. Kongo. 39-
Finder: 312.8; 380.2.
122-5 Eunotia rabenhorstii var. africana Hustedt Plate 520/15-17
Op 122, p 69, t 2/7-9-
Lectotype:
244/41a. Belg. Kongo. 42.
Marked, unnamed specimens.
Finder: 432-6; 470-3-

340
Isolectotype:
244/41b. Belg. Kongo. 42.
Marked, unnamed specimen.
Finder: 348.6.
122-6 Eunotia rabenhorstii var. africana forma triodon Hustedt
Plate 520/18-19
Op 122, p 69, t 2/10.
Hoi0type:
244/43b. Belg. Kongo. 45. Reg. d. Volcans. Gando, oberst. See.
Marked, unnamed specimen.
Finder: 583.6 (i-type).
122-7 Eunotia tenella forma undulata Hustedt Plate 520/6-8
Op 122, p 69, t 3/30-31.
Lectotype:
244/36. Belg. Kongo. 39-
Marked, unnamed specimens.
Finder: 312.8; 460.2 (2 specimens).
122-8 Eunotia pseudoflexuosa Hustedt Plate 522/1-6
Op 122, p 71, t 2/16-18.
Lectotype:
244/36. Belg. Kongo. 39.
Marked specimens, unnamed.
Finder: 312.8 (2 specimens); 316.5-8.
Isolectotype:
244/34a Belg. Kongo. 39. Karisimbi-See. +38OO m.
Two' unnamed specimens in the same circle.
Finder: 282.8.
122-9 Achnanthes (atomus var.?) congolensis Hustedt Plate 522/7-10
0pT22,;p~74r~t 2/35-36.
+
Holotype:
241/58. Belg. Kongo. l6l. Lac Edouard. Bougazia.
Marked, unnamed specimen.
Finder: 317-5 (i-type).
122-10 Stauroneis subobtusa Hustedt Plate 522/11-13
Op 122, p 80, t 5/25.
Holotype:
N14/76. Bera-See (Kiwu). Belg. Kongo. 386.
Marked, unnamed specimen.
Finder: 441.1.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei>rambler.ru
122-11 Navicula rauticoides Hustedt
Op 122, p 82, t 4/33-36.
Lectotype:
N14/76. Bera-See (Kiwu). Belg. Kongo. 386.
Marked specimens named on the label.
Finder: 470.8-9; 441.3-6; 496-5-
Isolectotype:
243/29. Belg. Kongo. 386. Berasee (Kiwu).
Marked, unnamed specimens.
Finder: 398.7; 435-1; 464-3; 467-7; 488.6; 519-5-
Further specimen:
N14/77. Ndalaga-See. Belg. Kongo. 337-
Marked specimen named on the label.
Finder: 288.1-2.
122-12 Navicula subcontenta var. africana Hustedt Plate 523/9-14
Op 122, p 85, t 4/27-28.
The two illustrated specimens (both marked and named "Navicula Damasii
Hust." on the labels) are on two different slides. As lectotype is here
selected: '-'
N13/56. Belg. Kongo. 238. Lac Edouard. Kasinga Channel.
Finder: 436.2 (i-type f 27).
Paralectotype:
N13/57. Belg. Kongo. 239. Lac Edouard. Kasinga Channel.
Finder: 524-4-7 (i-type f 28).
N.B. In op 171, p 203, f 1322, Hustedt raises this taxon to species
rank (erroneously designated as "nov. spec") under the name Navicula
damasii Hustedt (cf. tx 171-1).
122-13 Navicula muraliformis Hustedt Plate 523/15-16
Op 122, p 85, t 4/31-32.
in spite of some hesitation I connect with this taxon the two marked but
uuiid.iued specimens on tue following slide which is considered as lecvutype:
244/36. Belg. Kongo. 39.
Finder: 315-5; 342-7-
N.B. Hustedt published - simultaneously - two different taxa under
the same name, the other being tx 125-2 Navicula muraliformis Hustedt,
op 125, p 440, f 5, 1949- In op 170, p 156, Hustedt refers to the latter
taxon only, whereas the species described from the Belgian Congo is never
mentioned again. In connection with Hustedt's discussion in op 122 I rename
here his Congo taxon:
Navicula pseudomuraliformis Simonsen, novum nomen, syn. Navicula
muraliformis Hustedt, op 122, p. 85; non Navicula muraliformis Hustedt, op 125,
p 440.
341
Plate 523/1-8

342
122-14 Navicula congolensis Hustedt Plate 523/17-20
Op 122, p 86, t 4/23-24.
Holotype:
Ma4/38. Belg. Kongo. 40. Gando, unterer Teich.
Two specimens in the same circle, named "Achnanthes = Nav. congolensis
Hust." on the label.
Finder: 645-2-5-
N.B. In .op 171, p 282, Hustedt writes that this taxon is to be
transferred to the genus Achnanthes. The justification for this is documented
by our micrographs. Unfortunately Hustedt failed to introduce a new
combination, therefore this is done here:
Achnanthes cognita Simonsen, nov. comb,, nov. nomen., synonym Navicula
congolensis Hustedt, op 122, p 86, 1949- - new name is necessary because
of Achnanthes congolensis Hustedt (tx 122-9).
122-15 Navicula submolesta Hustedt Plate 523/21-25
Op 122, p 86, t 5/16-18.
Holotype:
N13/78. Belg. Kongo. 53. Mares de Gando, Algen.
Marked specimens named on the label.
Finder: 521.5-8; 525-1; 526.7-8; 557-3; 559-1-2.
122-16 Navicula molestiformis Hustedt Plate 523/26-29
Op 122, p 86, t 5/9-
Holotype:
242/6. Belg. Kongo. 6l. Lac Edouard. Kamande.
Marked, unnamed specimen.
Finder: 252.5.
122-17 Navicula faceta Hustedt Plate 523-/30-34
Op 122, p 88, t 4/25-26.
There are two marked, unnamed specimens on two slides of which 1 select
as ■ x^utotype: --- - -
244/43a. Belg. Kongo. 45- Reg. d. Volcans. Gando, oberst. See.
Finder: 523.2.
Isolectotype:
244/43b. Belg. Kongo. 45- Reg. d. Volcans. Gando, oberst. See.
Find;r: 556.5.
122-18 Navicula finitima Hustedt Plate 523/35-36
Op 122, p 90> t 4/29-30.
Holotype:
242/25. Belg. Kongo. 18. Edwardsee. Katukuru-Bach.
Marked, unnamed specimen.
Finder: 373-2-5.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
343
N.B. Because of Navicula finitima Janisch 1888, Hustedt's name is not
valid, his taxon has to be renamed:
Navicula subfraudulenta Simonsen, nov. nomen, synonym Navicula finitima
Hustedtj op 122, p 90, 1949-
122-19 Navicula zanonii Hustedt Plate 524/1-5 ■
Op 122, p 92, t 5/1-5-
As lectotype is here selected:
241/58. Belg. Kongo. l6l. Lac Edouard. Bougazia-
Marked, unnamed specimens.
Finder: 469.6; 501.8; 582.4-7-
Isolectotype:
241/59. Belg. Kongo. l6l. Lac Edouard. Bugazia.
Marked, unnamed specimen.
Finder: 531-4-7-
Further specimen:
242/24. Belg. Kongo. 141- Eduardsee, Kamande, Chara.
Marked, unnamed specimen.
Finder: 409.1.
122-20 Navicula exiguiformis forma elliptica Hustedt Plate 524/6-14
Op 122, p 96, t 4/2, 5, 9, 10, 12.
There are three slides with marked, unnamed specimens of which I designate
as lectotype:
241/58. Belg. Kongo. l6l. Lac Edouard. Bougazia.
Finder: 372.2 (2 specimens); 468.9 (5 specimens).
The other slides:
242/24. Belg. Kongo. 141 - Eduardsee, Kamande, Chara.
Finder: 284-6; 499-6-9-
241/91. Belg. Kongo 160. Edwardsee. Mosenda-Mdg.
Finder: 439.7-8.
\22^h. Navicula exiguiformis forma undulata Tlustedt " Plate 524/15-16
Op 122, p 96, t 4/13-
Holotype:
242/37. Belg. Kongo. 72. Kivusee. Ngoma. Algen.
Marked, unnamed specimen.
Finder: 315-3-6.
122-22 Navicula barbarica Hustedt Plate 524/17-21
Op 122, p 97, t 4/14-17-
Three slides contain marked, unnamed specimens. As lectotype is chosen:
241/91. Belg. Kongo. l60- Edwardsee. Mosenda-Mdg.
Finder: 318.I; 434-4; 439-7-8.
The other slides:

344
241/58- Belg. Kongo. l6l. Lac Edouard. Bougazia.
Finder: 410.9.
241/73- Belg. Kongo 173- Eduard-See. Pi. 5 m.-
Finder: 620.6.
122-23 Caloneis bacillum forma Inflata Hustedt Plate 525/1-6
Op 122, p 99, t 11/26-31.
There are in all five slides with this taxon, always marked but not named,
and all are from different localities. As lectotype I designate:
241/58. Belg. Kongo. l6l. Lac Edouard. Bougazia.
Finder: 406,7.
The other slides:
241/91. Belg. Kongo. 160. Edwardsee. Mosenda-Mdg.
Finder: 433-8.
242/13. Belg. Kongo. 135- Eduardsee. PI. Kamande, 0.5 m.
Finder: 619.1-2.
NI3/56. Belg. Kongo. 238. Lac Edouard. Kasinga Channel.
Finder: 438.2.
242/43. Belg. Kongo. 87. Kivusee. Ngoma. 85-50 m. PI.
Finder: 257-7-
122-24 Pimmlaria valida Hustedt Plate 525/7-10
Op 122, p 106, t 6/22.
Holotype:
244/32. Belg. Kongo. 37- Karisimbi, Tumpel.
Marked, unnamed specimen.
Finder: 435-9-
The frustule is filled with air and therefore difficult to photograph.
122-25 Pinnularia tropica Hustedt Plate 526/1-5
Op 122, p 108, t 7/1-12.
As lectotype is designated here:
244/31b. Belg. Kongo. 37. Tumpel auf dent Karisimbi..
Marked, unnamed specimens.
Finder: 226.5-8; 404-6-9; 460.8; 463-7; 501.2.
Isolectotype:
244:32. Belg. Kongo. 37- Karisimbi, Tumpel.
Marked, unnamed specimen.
Finder: 224-8-9-
122-26 Amphora thermalis Hustedt Plate 527/1-8
Op 122, p 111, t 11/1-3-
There are two slides containing marked, unnamed specimens.' Of these the
following is here designated as lectotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
345
244/15- Belg. Kongo. 31. May-ia-Moto.
Finder: 287-2-5; 377-4; 584-4-
Paralectotype:
244/2. Belg. Kongo. 28. May-ia-Moto.
Finder: 432.6-9; 433-9-
122-27 Amphora submontana Hustedt Plate 527/9-IO
Op 122, p 112, t 11/4-
Holotype:
241/91- Belg. Kongo. 160. Edwardsee, Mosenda-xMdg.
Marked, unnamed specimen.
Finder: 411-7-
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 10, 1985) include this
taxon as synonym in Amphora montana Krasske. However, the slide they cite
as "holotype" (Ul/8l, Cerro Blanco) is from El Salvador and was mounted
in 1955- They did not consult the true holotype for their decision.
122-28 Cymbella naviculoides Hustedt Plate 527/11-15
Op 122, p 113, t 10/9-13-
Holotype:
244/31ti. Belg, Kongo. 37- Tumpel auf dem Karisimbi.
Marked, unnamed specimens.
Finder: 378.4 (3 specimens); 400.2; 525.4-7; 554-8 (2 specimens).
122-29 Gomphonema aequatoriale Hustedt Plate 527/l6-20
Op 122, p 119, t 10/6-8.
Holotype:
242/24. Belg. Kongo. 141 - Eduardsee, Kamande, Chara.
Marked, unnamed specimens.
Finder: 257-3 (3 specimens); 406.1; 531-1-2.
122-30 Nitzschia umbilicata Hustedt '*" Plate 528/9-12
Op 122, p 129, t 11/65.
Holotype:
243/43. Belg. Kongo. 276. Kibuga-See. Algen.
Marked, unnamed specimen. ,
Finder: 469.8-9-
Archibald (Diatoms of the Sundays and Great Fish Rivers... Bibl.
Diatomol. 1, p 239, 1983) synonymizes this taxon with Nitzschia calida
Grunow. The two species have different fibular structures, however.
122-31 Nitzschia congolensis Hustedt Plate 528/6-8
Op 122, p 134, t 12/15-16.

346
Holotype:
242/33. Belg. Kongo. 485. Eduardsee, PI. Vitshumbi.
Marked, unnamed specimens.
Finder: 3H.2-5; 379-1; 434-9; 614.I; 614-3-
122-32 Nitzschia consummata Hustedt Plate 528/1-5
Op 122, p 134, t 12/1-2.
Lectotype:
241/49. Belg. Kongo. 214- Eduardsee. PI. Semliki.
Marked, unnamed specimens.
Finder: 255-3-6; 284-7; 430.1-4-
122-33 Nitzschia adapta Hustedt Plate 529/1-8
Op 122, p 135, t 12/3-6.
Hustedt did obviously not care to mark this taxon which occurs frequently
(though not "in masses" as stated) in the 2.5- m plankton sample in the
Kamande Bay. Of the three slides he mounted with this material I determine
the following as lectotype:
242/18. Belg. Kongo. 138. Lac Edouard. PI. 2.5 m.
Isolectotypes:
242/19. Belg. Kongo. 138. Lac Edouard. PI. 2.5 m.
242/20. Belg. Kongo. 138. Lac Edouard. PI. 2.5 m.
N.B. Hustedt's statements on the strial density is 34 to more than
40, smaller individuals "about 45 in 10 (j.". Our counts resulted in
38-42 striae in 10 |jm.
122-34 Nitzschia aequalis Hustedt Plate 530/1-4
Op 122, p 135, t 12/7-8.
Lectotype:
241/73. Belg. Kongo. 174- Eduard-See. PI. 5m.
Marked, unnamed specimen.
Finder; 342.7—8 { i—"ly^c f 7 ) •
Paralectotype:
241/65- Belg. Kongo. 168. Eduard-See. PI. 50 m.
Marked, unnamed specimen.
Finder: 493-4-5 (i-type f 8).
122-35 Nitzschia stricta Hustedt Plate 530/5-9
Op 122, p 136, t 12/9-10.
We are certain to have found the i-type of f 10. The specimen does possess
a central nodule, however, which is indicated by the somewhat greater
between the two central fibulae. This is also true for the second specimen
that we found, which is possibly, though not certainly, the i-type of
f 9- Hustedt denied the presence of a central nodule. Both specimens are
marked but unnamed.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei>rambler.ru
347
Holotype:
242/6. Belg. Kongo. 6l. Lac Edouard. Kamande.
Finder: 286.5 (i-type f 9?); 374-2-5 (i-type f 10).
122-36 Nitzschia intennissa Hustedt Plate 529/9-10
Op 122, p 136, t 12/11-14.
It is with some hesitation that I identify the illustrated unnamed specimen
with Hustedt' s taxon. It is the only marked specimen of sufficient
similarity on slides made with material of samples no. 396, 398, and 141 cited
in the protologue:
243/31. Belg. Kongo. 396. Katana. Chute de Machusa.
Finder: 284.6.
i-
122-37 Nitzschia tarda Hustedt Plate 531/I-6
Op 122, p 138, t 12/24-25 (26?).
Of the two slides with marked - unnamed - specimens of this taxon the
following is selected as lectotype:
242/13. Belg. Kongo. 135- Eduardsee. PI. Kamande, 0.5 m.
Finder: 285-9; 313-3-6; 342.3-6; 552.8.
The other slide:
242/3. Belg. Kongo. 10. Eduardsee. PI. Kamande.
Finder: 346.9; 582.8.
122-38 Nitzschia diserta Hustedt Plate 531/7-9
Op 122, p 139, t 12/32-33-
Holotype:
243/7. Belg. Kongo. 414- Kivusee, Pi. 15 m. Nyamirundi.
Marked, unnamed specimen.
Finder: 339-3-6.
122-39 Nitzschia accomodata Hustedt Plate 532/1 6
Up 122, p 139, t i2/2'/-ji.
Hustedt did not mark this taxon which is very frequent in the material
cited in the protologue. As lectotype is here designated:
242/34..Belg. Kongo. 69. Lac Kivu. Ngoma.
Isolectotypes:
242/35. Belg. Kongo. 69. Lac Kivu. Ngoma.
242/36. Belg. Kongo. 69- Lac Kivu. Ngoma.
122-40 Nitzschia amphioxoides Hustedt Plate 532/17-24.
Op 122, p 140, t 13/65-72.
We found this taxon marked - always unnamed - on four slides. Of these
the following is determined as lectotype:

348
242/4* Belg. Kongo. 13. Eduardsee. PI. Kamande, Obfl.
Finder: 437-5-6; 462,9; 463-7-8; 616.3-6.
The other slides:
242/2. Belg. Kongo. 10. Eduardsee. PI. Kamande.
Finder: 472.4-7-
242/12. Belg. Kongo. 134- Eduard-See. PI. Obfl.
Finder: 258-5-8,
241/65. Belg. Kongo. 168. Eduard-See. PI. 50 m.
Finder: 44O.I.
122-41 Nitzschia robusta Hustedt Plate 532/11-16
Op 122, p 141, t 13/35-38.
Initially Hustedt evidently combined this taxon with Nitzschia amphibioides
Hustedt (tx 108-83) of which he discusses the relation in the protologue.
Therefore the label of the type slide bears the latter name- Holotype:
Wl/75- Belg. Kongo. 396. Katana. Chute de Machusa.
Marked specimens.
Finder: 283.8-9; 285-8; 316.6-9; 341-4-5; 524.6; 529-6; 558.1; 617.2.
Isotype:
243/31. Belg. Kongo. 396. Katana. Chute de Machusa.
Marked, unnamed specimens.
Finder: 256.5-8; 343-2; 346.5; 373-1; 498-8; 556.1-4.
122-42 Nitzschia epiphyticoides Hustedt Plate 531A0-14
Op 122, p 144, t 13/48-55.
Lectotype:
241/49- Belg. Kongo. 214- Eduardsee. Pi. Semliki.
Marked, unnamed specimens.
Finder: 227.2-5; 258.1 (2 specimens); 283.7 (2 specimens); 428.1-4.
122-43 Nitzschia confinis Hustedt Plate 533/1-6
Op 122, p 145, t 11/49-54, t 13/84-90.
Hustedt did evidently not care to mark specimens of this taxon, because
it occurs partly in masses. Therefore the following slide is here selected
as lectotype:
242/43- Belg. Kongo. 87. Kivusee, Ngoma. PI. 85-50 m.
Isolectotypes•
242/44. Belg. Kongo. 87- Kivusee, Ngoma. PI. 85-50 m.
242/45. Belg. Kongo. 87. Kivusee, Ngoma. PI. 85-50 m.
122-44 Nitzschia obsoleta Hustedt Plate 533/9-16
Op 122, p 146, t 13/94-100.
This very abundant taxon was probably, at least partly, inadvertently
encircled along with other taxa, mainly with tx 122-52. As lectotype is
SCANNED MJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.
349
here designated:
242/23. Belgisch Kongo 140. Lac Edouard. an Algen.
Finder: 314-8 (4 specimens); 343-7 (4 specimens); 377.8; 462.5.
N.B. The typical strongly radiate terminal striae remained unnoticed
by Hustedt.
122-45 Nitzschia subcommunis Hustedt Plate 533/17-22
Op 122, p 146, t 11/55-58, t 13/101-106.
As lectotype is here chosen:
243/31. Belg. Kongo. 396. Katana. Chute de Machusa.
Marked, unnamed specimens, often several in a circle.
Finder: 346-4; 369-8; 373-1-4 (4 specimens).
N.B. Note also in this taxon the strongly radiate striae near the ends
which is not mentioned in Hustedt's description.
122-46 Nitzschia tropica Hustedt Plate 534/1-9
Op 122, p 147, t 11/34-48,
The following lectotype is here determined:
243/31- Belg. Kongo. 396. Katana. Chute de Machusa.
It is not clear, whether Hustedt intended to mark this taxon or the
preceding one in his circles, or some other diatom., Nevertheless, I take the
three circles marking Nitzschia subcommunis also to indicate N. tropica
which are both abundant.
Finder: 346.4; 369-8; 373-1-4-
122-47 Nitzschia palea var. tropica Hustedt Plate 530/10
Op 122, p 147, t 13/26-29.
We have examined the three slides (nos. 242/34-36) made with sample 69
without finding marked specimens of this taxon. Closer examination of a
slide did not reveal diatoms that can be combined with sufficient certainty
with Hustedt's taxon. With regret we can therefore only present here
Hustedt's drawings.
122-48 Nitzschia obsidialis Hustedt -Plate 533/7-8
Op 122, p 148, t 13/25-
Holotype:
242/23. Belgisch Kongo 140. Lac Edouard. an Algen.
Marked, unnamed specimen.
Finder: 461.5-8.
N.B. Hustedt did not succeed in resolving the striation. A micrograph
taken with oblique illumination enabled us to count the striae: 50-52
in 10 ^im.

350
122-49 Nitzschia latens Hustedt Plate 532/7-10
Op 122, p 148, t 13/30-31.
Holotype:
244/15- May-ia-Moto. Belg. Kongo, 31.
Markedj unnamed specimens.
Finder: 377-4 (i-type f 30)j 464-5-8 (i-type f 3D-
Paratype:
244/17- Belg. Kongo. 32. May-ia-Moto.
Marked, unnamed specimen.
Finder: 404.4.
122-50 Nitzschia elliptica Hustedt Plate 534/16-20
Op 122, p 148, t 13/32-34-
Of the three slides with marked - always unnamed - specimens the following
is chosen as lectotype:
244/17. Belg. Kongo. 32. May-ia-Moto.
Finder: 253-7; 282.6; 318.6.
Paralectotypes:
244/15. May-ia-Moto. Belg. Kongo. 31.
Finder: 287-2-5; 351-2.
244/2. Belg. Kongo. 28. May-ia-Moto.
Finder: 403-8-9; 498.2-5.
N.B. It may possibly be worthwhile to examine the relation between
the preceding Nitzschia latens and N. elliptica.
122-51 Nitzschia mediocris Hustedt Plate 534/10-15
Op 122, p 149, t 13/21-24.
Hustedt did neither mark nor name, this taxon which is rather abundant in
sample 412 cited by him. Of the two slides found I designate as lectotype:
243/5. Belg. Kongo. 412. Kivus.ee, 6 m. Nyamirundi.
Isolectotype:
243/6. Belg. Kongo." 412. Kivusee. 6 m. Nyamirundi.
122-52 Nitzschia hacata forma linearis Hustedt Plate 534/21-27
Op 122, p 149, t 13/17-20.
The following lectotype is designated here:
242/23. Belgisch Kongo. 140. Lac Edouard. an Algen.
Marked, unnamed specimens.
Finder: 343-7; 377-8; 462.5.
122-53 Nitzschia spiculum Hustedt Plate 535/1-5
Op 122, p 150, t 13/1-4.
The taxon is marked and also named on the following slide which is
therefore taken as lectotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei>rambler.ru
351
N13/56. Belg. Kongo. 238. Lac Edouard. Kasinga Channel.
Marked specimen named on index sheet.
Finder: 440.4-7-
Further marked, unnamed specimens in:
242/6. Belg. Kongo. 6l. Lac Edouard. Kamande.
Finder: 195-1; 195-8.
N.B. Hustedt could not resolve the structure. We counted 46-48 striae
in 10 urn in some of our micrographs.
122-54 Nitzschia spiculoides Hustedt Plate 535/6-9
Op 122, p 151, t 13/5-6-
We found only one marked specimen that can be identified with Hustedt's
taxon and therefore has to be considered as holotype:
241/49. Belg. Kongo. 214- Eduardsee. PI. Semliki.
Finder: 256.3-6 (i-type f 6).
N.B. High-performance microscopy revealed the striae which had remained
invisible to Hustedt: 48-50 striae in 10 ujn.
122-55 Surirella propinqua Hustedt Plate 536/3-5
Op 122, p 153, t 14/5-6-
Lectotype:
244/33a. Belg. Kongo. 39-
Marked, unnamed specimens.
Finder: 402.1 (i-type f 5); 531-4-5 (i-type f 6).
Isolectotype:
X7/37- Belg. Kongo. 39- Karisimbi-See. +38OO m.
Marked specimen named on the label.
Finder: 373-2.
122-56 Surirella cuspidata forma constricta Hustedt. Plates 535/10, 536/1-2
Op 122, p 155, t 15/U.
Holotype:
244/34a. Belg. Kongo. 39. Karisimbi-See. +3&00 m.
Marked, unnamed specimens.
Finder: 3H-1; 373.1-4 (i-type); 376.6; 410.2.
Op. 124- Diatomeen von der Sinai-Halbinsel und aus dem Libanongebiet.
Hydrobiologia 2, 24-55, 1949-
124-1 Achnanthes coarctata var. sinaensis Hustedt Plate 537/1-5
Op 124, p 43, t 1/6-7-
Two slides made at different times in different mountants were made from

352
the same sample. Both are contained in the same "Achnanthes box". One of
these has marked specimens named "Achnanthes" on the label, and this is
here proposed as lectotype:
Ma4/42- Sinai, Dschebel Musa, 1900-2100 m. Granitfelsen. 1.
Finder: 190.4-5; 226.5; 251-5-6; 280.3; 344.2-5; 488.1; 489.l; 526.4-7.
The other slide - isolectotype - has no marked specimens but bears the
taxon's name on the label:
Ma4/49* Djebel Musa, Sinai. 1900-2100 m.
124-2 Achnanthes grimmei var. hyalina Hustedt Plate 537/6-11
Op 124, p 43, t 1/10-19.
The taxon is nowhere recorded by name or represented by marked specimens.
Therefore the following slide containing material stated in the protologue
to contain the taxon particularly frequently is here designated as
lectotype:
165/59• Oase Ayun Musa. N-Sinai. Chara. 2.
N.B. Lange-Bertalot & Ruppel (Arch. Hydrobiol., Suppl. 60, p 7, 1980)
synonymize this taxon with and include it in Achnanthes gibberula Grunow
(Syn. A. grimmei Krasske).
124-3 Amphora strigosa Hustedt Plate 537/12-15
Op 124, p 44, t 1/30-33.
The taxon is nowhere recorded by name. Of the slides containing marked
specimens the following is proposed as lectotype:
290/66. Sinai. Wadi Islet. Chara.
Finder: 279.6; 520.3-6.
Further slides:
290/69- Oase Ayun Musa. NW-Sinai. 1.
Finder: 340.9.
I65/6O. Oase Ayun Musa. N-Sinai. 2. Chara.
Finder: 311.1.
124-4 Caloneis desertorum Hustedt Plate 538/8-11
Op 124, p 45, t 2/8-9.
The taxon's name appears nowhere in the records. Of the two slides with
marked specimens the following is chosen as lectotype:
290/77- Sinai. Oase Feiran. 1. a.
Finder: 279-5-6 (i-type f 8); 317-4-7; 488.5; 522.1-4.
Isolectotype:
290/78. Sinai. Oase Feiran. 1. a.
Finder: 228.2-5; 287.1-4; 349-1-2; 349.5-8.
124-5 Cymbella kolbei Hustedt Plate 538/1-7
Op 124, p 46, t 1/20-26.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei>rambler.ru
353
Since we found no names recorded nor marked specimens, I select as
lectotype a slide containing the taxon in masses, which is also stated in the
protologue:
165/87 Eliasquelle bei Jericho., Palastina.
N.B. The taxon on the above slide tends to somewhat more strongly
protracted apices than depicted by Hustedt.
124-6 Cymbella monticola Hustedt Plate 537/16-18
Op 124, p 46, t 1/45-46.
Holotype:
T3/32. Sinai, Dschebel Musa, 1900-2100 m. Granitfelsen. 1.
Marked specimen named on the lab'e'l.
Finder: 255-3-
124-7 Fragilaria fonticola var. sinaica Hustedt Plate 538/12-15
Op 124, p 46, t 1/1-4-
Holotype:
T3/32. Sinai, Dschebel Musa, 1900-2100 m. Granitfelsen, 1.
Marked, unnamed specimens.
Finder: 166.5; 200-5; 219.6; 258.8.
124-8 Hantzschia fenestrata Hustedt Plate 539/1-9
Op 124, p 48, t 1/47-50.
Holotype:
Wa/58a. Jerusalem, Philippus-Quelle.
Marked specimens named on the label.
Finder: 288.9; 290.5; 292.5; 340.9; 349.2 (2 specimens); 349-5-6; 400.6-9;
490.8; 493-1-4; 532.2; 587.7-8; 641-2; 672.9.
N.B. Note the very irregular length of the transapical striae near
the raphe which remained unnoticed by Hustedt.
124-9 Navicula mutica var. gracilis forma apiculata Hustedt
Plate 539/10-13
Op 124, p 49, t 2/36.
Holotype:
290/59. Dschebel Katterin, Sinai.
Marked specimen named "Navicula" on the label.
Finder: 462.7.
We found another marked, though not recorded specimen:
T3/32. Sinai, Dschebel Musa, 1900-2100 m. Granitfelsen. 1.
Finder: 253-7-
N.B. In op 175, p 592, Hustedt raised the variety (= tx 89-60) to
species rank under the name Navicula obligata Hustedt. Taxon 124-9,
however, is nowhere mentioned in his treatment of the Navicula mutica
group of species.

354
124-10 Nitzschia desertorum Hustedt Plate 537/19-23
Op 124, p 50, t 1/53-55-
Holotype:
290/67. Sinai. Wadi Islet. Chara.
Marked, unnamed specimens, several in each circle.
Finder: 259.4-7; 280.1.
124-11 Pinnularia kneuckeri Hustedt Plate 538/16-20
Op 124, p 50, t 2/22-32.
The taxon is marked, though never named, on several slides. Of these the
following is proposed as lectotype:
290/62. Sinai. Wadi Torfa. 1. Cascaden.
Finder: 285-2-5; 374-1; 380.7; 440.3-
Isolectotype:
290/61. Sinai. Wadi Torfa. 1. Cascaden.
Finder: 231.8; 457-2; 501.2.
Op. 125- Contribution (p 439-443) in: I. Brendemiihl, Uber die Verbreitung
der Erddiatomeen. Arch. f. Mikrobiol. 14, 407-449, 1949-
125-1 Navicula harderi Hustedt Plate 540/1-5
Op 125, p 439, f 4-
Holotype:
N12/80. Wenzen bei Gottingen. Buchenwaldrand.
Marked specimens named on the label.
Finder: 435-5-8; 494-5; 584.8-9.
125-2 Navicula muraliformis Hustedt Plate 540/6-9
Op 125, p 440, f 5.
Holotype:
N12/81- Laubach a. d. Werra. Wiese.
Marked specimens named on the label, several in each circle.
Finder: 404-1-4; 405-5-8.
N.B. In op 122, p 85, t 4/31-32, Hustedt simultaneously published
another - different - species under the same name (see tx 122-13). However,
since he refers only to taxon 125-2 in op 170, p 156, the other taxon was
here given a new name (Navicula pseudomuraliformis Simonsen, see p 341)•
125-3 Navicula subseminulum Hustedt Plate 540/10-12
Op 125, p 441, f 6.
Holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
355
N12/80. Wenzen bei Gottingen. Buchenwaldrand.
Marked specimens named on the label.
Finder: 435-5-8 (several specimens); 494-5.
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 74, 1985) include this
taxon as synonym in Navicula harderi Hustedt (see tx 125-1).
125-4 Nitzschia atomus Hustedt Plate 540/13-17
Op 125, p 441, f 7.
Holotype:
307/l8. Bovenden^ Grabenrand.
Marked, unnamed specimens, many in the same circle.
Finder: 459.8.
125-5 Nitzschia harderi Hustedt Plate 540/18-22
Op 125, p 441, f 8.
The taxon is nowhere marked. There is a great probability, however, that
the specimens which are frequent on the following slide represent Hustedt's
taxon. Hustedt recorded it in his notes from this sample. For the time
being this slide is therefore considered as the lectotype:
307/13- Gottingen, botan. Garten. Grabenrand.
N.B. Hustedt did not resolve the transapical striae. We succeeded with
this now partly in one valve and counted 44 striae in 10 urn.
125-6 Nitzschia modesta Hustedt Plate 540/23-28
1
Op 125, p 442, f 9-
Holotype:
307/6. Kaufinger Wald. Wiese am Rofikopf.
Unnamed, unmarked specimens, the taxon is rather frequent.
125-7 Nitzschia obtusangula Hustedt Plate 540/29-37
Op 125, p 443, f 10-
Holotype:
N12/81. Laubach a. d. Werra. Wiese.
Marked specimens, not named. The taxon is abundant.
Finder: 404-1-4 (3 specimens).
N.B, There is strong indication that the specimens described as
Nitzschia obtusangula are the initial cells of another species, possibly
N. pusilla (Kutsing) Grunow. The sculpture of the frustules is roundish,
vaulted and cigar-shaped, with the "fibulae" appearing as high-refractive
structures of no particular shape. Not unoften there are aggregates of
valves in the material with the "initial cell" to which the two shorter
parent valves are still attached. These are easily discernible by their
fibulae which are very small and of great number per length unit. It is
remarkable that there is such a number of these stages in the material,
more than 100 per slide. - In the valves about 44 striae in 10 \m could
be counted.

356
Op* 125A. Contribution (p 8l) in: G. Krasske, Subfossile Diatomeen aus
den Mooren Patagoniens und Feuerlands. Ann. Acad. Sci. Fenn., Ser. A. IV.,
H, 1-95, 1949-
125A-1 Navicula splendidula Hustedt &. Krasske Plate 541/l-5
Op 125A, p 81, f 5- See also op 170, p 22, f 1185-
Of the two slides with the taxon's name on their labels the following is
selected as lectotype:
NlO/41* Moor Lago Fontana, Patagonien. Kr. 5212.
Finder: 468.5 (i-type); 501.1.
Isolectotype:
N10/42. Moor Lago Fontana, Patagonien. Kr. 5212.
Finder: 284.1-
N.B. No magnification is given with the original illustration, it is
x600. The same specimen, but in a different drawing, is illustrated by
Hustedt in op 170, p 23, f 1185-
Op. 126. Die Diatomeenflora norddeutscher Seen mit besonderer Berucksichti-
gung des holsteinischen Seengebietes. V-VII. Seen in Mecklenburg, Lauen-
burg und Nordostdeutschland. Arch. Hydrobiol. 43, 329-458, 1950.
126-1 Navicula limatoides Hustedt Plate 542/1-6
Op 126, p 350, t 38/33-34.
The following lectotype is here designated:
N6/59- Carwitzer See. 38 m.
Marked specimen named on the label.
Finder: 376.8-9 (i-type f 34)-
Isolectotype:
392/6. Carwitzer See. 38 m. 18.8.24. 2.
Marked specimen named en index sheet.
Finder: 488.1 (i-type f 33)-
Further slide: •.
N9/34- Schaalsee. 9 m. Priestersee. 24-8.21.
Marked specimen named on the label.
Finder: 406.6-9-
N.B. Krammer & Lange-Bertalot (Navicul^ceae, p 79, 1985) include this
taxon as synonym in Navicula rotunda Hustedt (see tx 117-18).
126-2 Navicula lucinensis Hustedt Plate 542/7-13
Op 126, p 350, t 38/24-25.
As lectotype is here chosen:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
357
Nll/75- Breiter Lucin. 9m. H.8.24.
Marked specimens named on the label.
Finder: 401.9 (i-type f 25); 56O.I.
Further slide:
Nel/89. Schmaler Lucin. 13 m. 16.8.24.
Marked specimen named on index sheet.
Finder: 408-9 (i-type f 24).
126-3 Navicula muraloides Hustedt Plate 542/17-27
Op 126, p 351, t 38/63-65.
As lectotype is here selected:
Nll/62. Schalkenmehrener Maar. 20 m.
Marked specimens named on the label.
Finder: 316.9; 436-3; 437.1-4; 527.1.
Isolectotype:
Nll/63. Schalkenmehrener Maar. 20 m.
Marked specimens named on the label.
Finder: 378.7; 494-3-
Further slides with marked and named specimens:
N5/82. Schmaler Lucin. 14 m. 17.8.24.
Finder: 493-1-
N13/97. Pulvermaar-. 76 m.
Finder: 441•5-6.
N13/98. Pulvermaar. 75 m.
Finder: 584-1-4.
N.B. In op 170, p 131, f 1264, Hustedt synonymizes this taxon with
and includes it in Navicula subocculta Hustedt (see tx 71-29)-
126-4 Navicula ordinaria Hustedt Plate 542/28-34
Op 126, p 352, t 37/27-28.
As lectotype is here chosen:
N12/78. Carwitzer See. 38 m.
Marked specimen named on the label.
Finder: 222.8 (i-type f 28).
Isolectotype:
392/6. Carwit zer See. 38 m. 18.8.24. 2.
Marked specimen named on index sheet.
Finder: 348.5-6.
Further slide:
Nll/75- Breiter Lucin. 9m. 14.8.24.
Marked specimen named on the label.
Finder: 468.5-6 (i-type f 27).

358
126-5 Navicula pseudomitis Hustedt Plate 534/1-3
Op 126, p 352, t 38/17.
Holotype:
392/5. Carwitzer See. 38 m. 18.8.24. 1.
Marked specimen named on index sheet.
Finder: 463-5-
N.B. In op 170, p 160, f 1295, Hustedt synonymizes this taxon with
and includes it in Navicula omissa Hustedt (see tx 117-25)-
126-6 Navicula sublucidula Hustedt Plate 542/lA-l6
Op 126, p 354, t. Wl6.
Holotype:
Nll/76. Breiter Lucin, 13 m. I6.8.24.
Marked specimen named on the label.
Finder: 374-5-
126-7 Neidium affine var. lucinensis Hustedt Plate 543/17-18
Op 126, p 356, t 41/52.
Holotype:
Nel/89. Schmaler Lucin. 13 m. 16.8.24-
Marked specimen named on the label.
Finder: 284-9-
126-8 Achnanthes lanceolata var. bimaculata Hustedt Plate 543/4-6
Op 126, p 394, t 36/1-2.
Holotype:
392/9, Salemer See, an Ceratoph.
Marked, unnamed specimen.
Finder:--286.8.
N.B. Geitler (Plant. Syst. Evol. 126, 377-392, 1977) found that this
is an initial cell of Achnanthes lanceolata Brebisson, but he does not
mention the above variety of Hustedt.
126-9 Achnanthes lauenburgiana Hustedt Plate 543/19-27
Op 126, p 394, t 36/3-9-
Lectotype:
Ma3/l. Schaalsee, Kuchensee v. Zecher. Typha-Wurzelschlick.
Marked specimen named on the label.
Finder: 377-5-8 (i-type f 8-9).
Paralectotype:
392/55. Schaalsee. Zarrentiner B. W-Ufer. Sand. 1.
Marked, unnamed specimens.
Finder: 284.3-6; 344-5; 347-3-6; 378.5-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
359
126-10 Cymbellonitzschia diluviana Hustedt Plate 543/7-11
Op 126, p 395, t 41/56-60 (discussion without description).
Description in op 146, p 453, f 23-25-
As lectotype is here determined:
Wa/92. Schaalsee. Priestersee, O-Ufer. Sand.
Marked specimen named on the label.
Finder: 496-5-6.
Paralectotype:
Wa/94. Schaalsee. Priestersee, Ceratophyllum.
Marked specimens named on the label.
Finder: 349-5-6; 401-3-
N.B. Our micrographs clearly indicate the presence of a central nodule
which had remained unmentioned by Hustedt.
126-11 Gomphonema olivaceoides Hustedt Plate 543/28-35
Op 126, p 397, t 37/9-12.
Holotype:
S3/2;. Schaalsee, Kuchensee, SW. Krustenstein.
Marked specimens, generally more than one in a circle, named on the label.
Finder: 313-2; 316.2-3; 341-5; 347-2-5-
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 49, 1985) include this
taxon in Gomphonema olivaceum var. minutissima Hustedt (tx 71-34). To me
the variation ranges of the two entities appear to be very different,
however, both in size and also in outline, the only common character being
the four central pores.
126-12 Navicula acceptata Hustedt Plate 543/12-16
Op 126, p 398, t 38/66-67.
Hustedt's record appears to be erroneous. We have examined slides from
all relevant localities of the Schaalsee (Salemer See) without encountering
a single valve of this taxon, to say nothing of marked specimens. We did
find quite a number of similar valves, hut these are all Achnanthes ro.phc
valves* Therefore a slid« from the Oberohe deposit, also named in the rr°-
tologue, was examined, the initial search for marked specimens having
remained unsuccessful. On this following slide a few frustules of the
species were discovered, for which reason it is here designated as
lectotype:
N14/33- Oberohe. 66.
Finder positions of the unmarked specimens: 436.1; 464*5; 254-5-
N.B. Note the transapical striae near the apices which are interrupted,
a peculiarity which remained unnoticed by Hustedt.
Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 75, 1985)
recombines this taxon: Navicula ignota Krasske var. acceptata (Hustedt)
Lange-Bertalot.

360
126-13 Navicula perhibita Hustedt Plate 545/1-4
Op 126, p 401, t 37/24-26.
Holotype:
392/83. Schaalsee, Borgsee, 0-Ufer. Moos.
Marked, unnamed specimens.
Finder: 401.2-5 (i-type f 24); 530.3-6 (i-type f 26); 553-7 (i-type f 25).
N.B. Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 77,
1985) recombines this taxon: Navicula laevissima Kiitzing var. perhibita
(Hustedt) Lange-Bertalot.
126-14 Nitzschia lauenburgiana Hustedt Plate 544/1-6
Op 126, p 402, t 40/6-7, 9-11.
We found marked but unnamed specimens of this taxon on one slide which
is to be considered as lectotype:
16/86. Schaalsee. 13-8.17. Zarrentiner Becken. Grund.
Finder: 343-8; 468.2-5-
126—15 Nitzschia radicula var. rostrata Hustedt Plate 545/12-14
Op 126, p 403, t 41/38-43.
We found only two marked, unnamed specimens which can be combined with
this taxon. Even this is done with some reservation, because there is no
conspicuous central nodule (which, by the way, Hustedt did also not
indicate in his figs 40 and 41)■
392/64. Schaalsee. Kirchensee. Phragmites. 12.8.
Finder: 346.3; 376.3-
126-16 Nitzschia recta var. robusta Hustedt Plate 544/7-9
Op.126, p 403, t 41/2-3-
There is only one slide with marked and named specimens, but it is not
from the Schaalsee as mentioned in the protologue but from the Kuttensee
in East Prussia from where Hustedt also records this taxon (table 6),
though not in the protologue. This slide should therefore be accepted
as lectotype:
W3/6. Kuttensee, Ostpreuften. 22.2-m.
Finder: 319-9; 496-4, 432-3-
N.B. Prof- Lange-Bertalot (pers. comm.) is of the opinion that the
specimen at 319*9 does not belong in this taxon.
126-17 Nitzschia subinvicta Hustedt Plate 545/9-11
Op 126, p 404, t 41/48.
Holotype:
392/79. Schaalsee, Lassahner See, 35 in-
Marked, unnamed specimen.
Finder: 252.7-8.
N.B. Hustedt reported that he was unable to resolve the transapical
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
361
striae. In our micrographs we count 40 striae in 10 \m. Contrary to the
statement of Hustedt that the central fibulae are not more distant from
one another than the others, there is a distinct indication of a central
nodule.
126-18 Pinnularia inculpata Hustedt Plate 546/1-2
Op 126, p 404, t 37/63-64.
Holotype:
N9/35- Schaalsee, Borgsee, N-Ufer. Wurzelwerk.
Marked, unnamed specimen.
Finder: 462.3-6-
126-19 Stauroneis lauenburgiana Hustedt Plate 545/5-6
Op 126, p 405, t 37/15-
Holotype:
392/60. Schaalsee, Dutzower See. 14.8.17.
Marked, unnamed specimen.
Finder: 434-3-
126-20 Stauroneis lauenburgiana forma angulata Hustedt Plate 545/7-8
Op 126, p 406, t 37/16.
Holotype:
17/25. Schaalsee. Niendorfer Binnensee. 14.8.17.
Marked, unnamed specimen.
Finder: 614.5-8.
126-21 Eunotia rhomboidea Hustedt Plate 546/3-8
Op 126, p 435, t 34/28, t 36/34-41.
No specimens are marked of this taxon which occurs abundantly in two
samples. Of the two slides which bear the taxon's name on their labels
the following is chosen as lectotype:
L3/H.~~Finnsee, Molln. SchilfStengel. 2.10.41.
Paralectotype:
L3/13- Pinnsee. Grund, Litoral. 3.10.42.
126-22 -Navicula absoluta Hustedt Plate 546/9-16
Op 126, p 435, t 38/80-85.
There are three slides with marked specimens bearing the taxon1s name on
their labels. Of these the following is designated as lectotype:
N9/40. Garrensee. Boschung. a. 2.10.42.
Finder: 405-2-5; 408.2-5 (several specimens); 464-1■
Paralectotypes:

362
N13/12. Garrensee. Sudteil. Phragmites.
Finder: 256.1; 469-1-2.
Nll/28. Garrensee. Sudteil. Ast. 2.10.41-
Finder: 440.3.
126-23 Navicula difficillima Hustedt Plate 547/1-6
Op 126, p 436, t 38/86-88.
Of the five slides with the species name on their labels the following
is selected as lectotype:
N2/63- Pinnsee, Molln. Ostufer, an Pfahlen. 2.10.41.
Marked specimens (several in each circle).
Finder: 555-6; 557-1-4-
Paratypes:
N2/62. Pinnsee. Molln, flottierende Wurzeln. 3.10-41.
Marked specimens.
Finder: 402.4-7; 493-9-
N2/64- Pinnsee, Molln, NupharStengel. Ostteil. 3-10.41-
No marked specimens.
N2/65- Pinnsee, Ostufer, Ast. 2.10.41-
Unmarked specimens.
Further slide:
N13/10. Schwarze Kuhle b. Salem. 2.10.41. Wurzel-Ballen.
Marked specimens.
Finder: 351.6; 404-2-3-
The taxon's name appears also on slide N10/40 (Garrensee, Detritus.
2.10-41.)- But we were unable to find marked or unmarked specimens on this.
126-24 Navicula opportuna Hustedt Plate 545/15-20
Op 126, p 436, t 39/21-22.
Holotype:
N9/40. Garrensee. Boschung. a. 2.10.42.
Marked specimens named on the label.
Finder: 315.6; 317-4-7; 408.2-5; 441"b-9; 464.1-
1
N.B. Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae,
p 86, 1985) recombines this taxon: Navicula porifera Hustedt var. opportuna
(Hustedt) Lange-Bertalot.
126-25 Navicula quadripunctata Hustedt Plate 547/9-19
Op 126, p 436, t 38/12-15.
There are six slides bearing the taxon's name on their labels, the first
five having marked specimens. As lectotype is here designated:
N13/10. Schwarze Kuhle b. Salem. 2.10-41. Wurzel-Ballen.
Finder: 370.2; 471-3-
Paralectotypes:
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
363
N13/9. Schwarze Kuhle b. Salem. 2.10.41- Wurzelwerk. 2.
Finder: 429-2-3.
N13/8. Schwarze Kuhle b. Salem. Flottierende Wurzeln.
Finder: 492.5-
Further slides:
N13/-7. Plotschersee, Moos. 2.10.41.
Finder: 403-9; 431-8; 465-1-
N7/9- Pinnsee, Molln, Sphagnum. 2.10-41-
Finder: 285-4; 287.8-9; 314-2-3-
N2/65- Pinnsee. Ostufer, Ast. 2.10.41-
A slide with no marked specimens, the taxon is rather frequent on all the
quoted slides.
N.B. Our investigations of this taxon prove that it belongs in Neidium
and not in Caloneis for which Hustedt saw a possibility. This was quite
recently and independently also found by Krammer & Lange-Bertalot
(Naviculaceae, p 100, 1985) who include this taxon as synonym in Neidium alpinum
Hustedt (see tx. 112-10).
126-26 Neidium iridis var. obtusa Hustedt Plate 548/1-4
Op 126, p 438, text figure 2-3.
Holotype:
Nel/39. Garrensee, Sudteil. Ast. 2.10.41-
Marked specimens named on the label.
Finder: 463-1 (i-type f 3); 523-3 (i-type f 2).
N.B. Krammer (in Krammer & Lange-Bertalot, Naviculaceae, p 101, 1985)
includes this taxon in Neidium ampliatum (Ehrenberg) Krammer.
126-27 Nitzschia garrensis Hustedt Plate 549/1-5
Op 126, p 438, t 39/1-5-
Of the five slides with the taxon's name on their labels, all with marked
specimens, the following shall be the lectotype:
W2/39. Garrensee. Boschung. b. 2.10.42.
Finder: 310.1; 346.2; 400.9; 529-1-4-■
Isolectotype:
W2/40. Garrensee. Boschung. b. 2.10.42-
Finder: 288.9; 285-8; 341-3-6.
Paralectotypes:
¥2/41- Garrensee, Fontinalis. 2.10.4-?-•
Finder: 309-6; 491.4-
¥2/42. Garrensee, Westufer, Stein. 2.10.41.
Finder: 255-7; 404-1; 524-9; 583-5-8.
N6/94- Garrensee, Westufer, Stein. 2.10.41-
Finder: 429-5; 615-1-4-
N.B. On the two first-cited slides there are several specimens marked
which are not inflated in the middle, thus representing Nitzschia recta

364
Hantssch, e.g. at finder position 462.2-3 on slide W2/39. Hustedt did not
record this latter species from this locality.
We were able to resolve the striation of both forms, the Nitzschia
"garrensis" has 42-43> N. recta 44 striae in 10 urn.
126-28 Nitzschia paleaeformis Hustedt Plate 547/20-30
Op 126,. p 439, t 39/6-14-
Of the three slides with the taxon's name on their labels there is only
one with marked specimens of this rather frequent diatom. This latter is
therefore selected as lectotype:
Wl/54. Pinnsee, Molln, Sphagnum. 2.10.41.
Finder: 496-6 (2 frustules).
Paralectotypes with unmarked specimens:
Wl/53. Pinnsee, Molln, flottierende Wurzeln. 3.10.41.
Wl/55. Pinnsee, Molln., NupharStengel, Ostteil. 3.10.41.
N.B. The strial counts of the photographed specimens resulted rather
constantly in 38 striae in 10 um. Hustedt had resolved them "only in a
few cases". Micrographs taken with his objective are represented on t 547,
f 24 and 3^' See also the remark under tx 126-35.
126-29 Pi nnularia interrupta var. gibberala Hustedt Plate 548/5-8
Op 126, p 439, t 39/15-
There is one slide with marked specimens named on the label from the
Garrensee, for which reason it is here taken as lectotype:
P4/28. Garrensee, Sudteil. Phragmites.
Finder: 341.6; 344-9; 527-3; 557-3; 586.6; 588.7.
Contrary to Hustedt's statement that he found the taxon only in the
Garrensee, the following slides contain marked specimens named on the labels:
P4/79- Plotschersee. 8 m. 7-5-24.
Finder: 372.8; 56O.I.
N13/H. Plotschersee. 8 m. 7-5.24.
Finder: 439-6-9-
126-30 Pi nnularia ruttneri var. lauenburgiana Hustedt Plate 549/6
Op 126, p 440, text fig 4-
Holotype:
P4/8l. Graben zwischen Plotschersee - Schwarze Kuhle.
Marked specimen named on the label.
Finder: 380-9-
126-31 Pinnularia subcapitata forma divergens Hustedt Plate 547/7-8
Op 126, p 441, text fig 7.
Holotype:
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
365
P4/80. Graben zwischen Plotschersee-Schwarze Kuhle.
Marked specimen named on the label.
Finder: 371.1-2.
126-32 Navicula accomoda Hustedt Plate 550/1-8
Op 126, p 446, t 39/17-18.
Holotype:
Nl/8. Charemsee, Masuren. b.
Marked specimen named on the label.
Finder: 500-7-8.
In addition to the single existing holotype a number of specimen's is here
shown from another locality which is also cited in the protologue. The
specimens are not marked, they occur in masses, the taxon's name is on
the label:
Nl/9. Hemmentaler Bach. Schaffhausen. Schweis.
N.B. Although this taxon varies little in general outline and
striation, the position of the terminal nodules of the raphe (= helictoglossa),
i.e. the distance from the apices, can vary considerably.
126-33 Navicula accurata Hustedt Plate 548/9-10
Op 126, p 447, t 39/16.
Holotype:
Nl/lO. Charemsee, Masuren. a.
Marked specimen named on the label.
Finder: 439-1-
N.B. Our micrographs show that the striae are densely punctate rather
than lineolate as stated and depicted by Hustedt.
I have difficulties in relating this taxon with Navicula cuspidata
(Kiltzing) Kiitzing in which Krammer & Lange-Bertalot (Naviculaceae, p 65,
I985) include it as synonym.
126-34 Neidium dubium var. elongata Hustedt Plate 550/9-13
Op 126, p 448, text fig 10.
Holotype:
Nel/57- Dmitrowo-See. Polen.
Marked specimens named on the label.
Finder: 282.7; 342.8; 372.5-6; 403-2-3; 523-1; 523-4; 523-3-6; 552.6-9-
126-35 Nitzschia vacua Hustedt Plate 550/17-22
Op 126, p 448, text fig 11-13-
Holotype:
W3/6. Kuttensee, Ostpreufien. 22.2 m.
Marked specimens named on the label.
Finder: 345-1-2; 345-7; 378.6-9.

366
N.B. Hustedt was not in the position to resolve the striation, hence
the name. He reports, "Struktur...bislang nicht aufgelost (Hyraxpraparat,
homog. Imm. 2mm Apochr.j num. Ap. 1.40)." We were now able to resolve the
striation which amounts to 40-42 in 10 urn, more often 40. In an experiment
we applied here Hustedt1s 2 mm apochromatic immersion objective, n.a. 1.40,
manufactured by Seibert presumably during the twenties of this century.
This objective performed admirably well in our experiment (t 550/19)
showing that Hustedt paid in some cases too little attention to the optimal
illumination (wave length, oblique illumination, condenser correction and
immersion etc.).
126-36 Navicula subrotundata forma lanceolata Hustedt Plate 550/14-16
Op 126, t 38/49-50 (no description no mention in the text).
Description in op 171, p 273, f 1402n-o.
Holotype:
N9/29. Schaalsee. Zarrentiner B. W-Ufer. Stein.
Marked specimen named on the label.
Finder: 348.2-5.
Op. 129. A.A. Aleem & F. Hustedt, Einige neue Diatomeen von der Siidkiiste
Englands. Bot. Notiser 1951, 1-20, 1951-
129-1 Navicula supralitoralis Aleem & Hustedt Plate 551/I-8
Op 129, p 15, f 2.
Holotype:
120/56a. England. Brighton. Kalkriff. Jan.48. Al.255.
Marked, unnamed specimens, the taxon is frequent on the slide.
Finder: 335-3; 344-2-3; 348.7-8; 383-1-4.
129-2 Amphora tenerrima Aleem & Hustedt Plate 551/26-30
Op. 19-9; p 16, f 3-
As lectotype is here proposed:
120/56a. England. Brighton. Kalkriff. Jan.48. Al.255-
Marked, unnamed specimens, the taxon is frequent in the material.
Finder: 344-2-3; 348-7-8; 383-1-4; 409-5-8.
129-3 Nitzschia calcicola Aleem & Hustedt Plate 551/H-20
Op 129, p 18, f 4-
Holotype:
120/56a. England. Brighton. Kalkriff. Jan.48. Al.255-
Marked, unnamed specimens, the taxon is frequent.
Finder: 347-7-8; 383-1-4; 409-5-8;
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe*':
367
129-4 Nitzschia valdestriata Aleem & Hustedt Plate 551/9-13
Op 129, p 19, f 5-
Holotype:
120/56a. England. Brighton. Kalkriff. Jan.48. Al.255-
Marked, unnamed specimen.
Finder: 409-5-8.
N.B. This taxon has a rather conspicuous central nodule not observed
by Hustedt. A few unmarked specimens are here included.
12Q-5 Nitzschia salinicola Aleem & Hustedt Plate 551/21-25
Op 129, p 19, f 6.
Holotype:
120/52a. England. S-Kuste. Tumpel. Supralitor. A1.101. Juni 47-
Marked unnamed specimens, several in same circle, the taxon is rather
frequent.
Finder: 408.7.
Op. 130. F. Hustedt & A.A. Aleem, Littoral diatoms from the Salstone, near
Plymouth. J. Mar. Biol. Ass. U.K. 30, 177-196, 1951-
130-1 Cocconeis guttata Hustedt & Aleem Plate 552/1-5
Op 130, p 182, f 1E-F.
Holotype:
309/77. Plymouth. 1.
Marked, unnamed specimen.
Finder: 588.6.
N.B. The material is mounted in a low-refractive mountant. In addition,
the two valves are extremely difficult to separate optically.
130-2 Navicula aleemii Hustedt Plate 552/6-9
Op 130, p 184, f ID.
Holotype:
309/77. Plymouth. 1.
Marked, unnamed specimen.
Finder: 289-1-4-
130-3 Navicula britannica Hustedt & Aleem Plate 552/10-12
op 130, p 184, f ic.
Holotype:
309/77. Plymouth. 1.
Marked, unnamed specimen.
Finder: 619-2.

368
130-4 Pleurosigma subhyalinum Hustedt & Aleem Plate 552/13-15
Op 130, p 188, f 2F.
Holotype:
309/77. Plymouth. 1.
Marked, unnamed specimen.
Finder: 258.2-3.
Op. 131. Neue und wenig bekannte Diatomeen. II. Ber. Deutsch. Bot. Ges.
64, 305-315, 1952.
131-1 Rhaphoneis similis Hustedt Plate 553/1-3
Op 131, p 307, f 6.
Holotype:
287/22a. Soemba. 1.
Marked specimen named "Rhaph." on index sheet.
Finder: 354-1-4-
131-2 Rhaphoneis elegantula Hustedt Plate 553/9-12
Op 131, p 308, f 10
Holotype:
Zt3/68. Campeche Bay. 63a.
Marked, unnamed specimen.
Finder: 644-3 (i-type).
Isotype:
Zt3/66. Campeche Bay. 63a.
Marked, unnamed specimen.
Finder: 434-4-
N.B. According to our LM examination this species has one rather small
labiate process on each end.
131-3 Rhaphoneis inflata Hustedt Plate 553/4-8
Op 131, p 308, f 8-9.
As lectotype is determined:
287/lla. Makassar, b.3-
Marked specimen named "Rhaph." or= index sheet.
Finder: 407-2 (i-type f 8).
Isolectotypes:
287/lOa. Makas sar. D.l.
Marked specimen named "Rhaph." on index sheet.
Finder: 347-1 (i-type f 9)-
287/1Ob. Makassar, b.2.
Marked specimen named "Rhaph." on index sheet.
Finder: 433-1-
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
369
131-4 Rhaphoneis tenuis Hustedt Plate 554/1-4
Op 131, p 308, f 7-
Holotype:
345/H • Ovalau, an Algen. l.b.
Marked, unnamed specimen.
Finder: 430.6.
N.B. No polar pseudocelli nor labiate processes could be made out in
the type specimen. It is perhaps not far-fetched to assume that this is
the rapheless valve of a Cocconeis species.
131-5 Hydrosirella Hustedt
• ■*--.
Op 131, p 309-
131-6 Hydrosirella robusta Hustedt Plate 554/5-7
Op 131, p 309, f H-12.
Holotype:
Ab/51■ Hacienda Talcualuya bei Opico, El Salvador.
A mount with picked specimens, among them the i-type of f 11.
Isotype:
339/3b. Hacienda Talcualuya bei Opico, El Salvador.
Three unnamed specimens in the same circle.
Finder: 499-2.
131-7 Nitzschia salvadoriana Hustedt Plate 555/1-4
Op 131, p 309, f 27-
Holotype:
339/4b. Hacienda Talcualuya bei Opico, El Salvador.
Marked, unnamed specimen.
Finder: 289-5 (i-type).
Isptypes:
W3/82. Hacienda Talcualuya bei Opico, El Salvador.
A single mount with name on the"label.
W3/83. Hacienda Talcualuya bei Opico, El Salvador.
Another single mount with name on the label.
131-8 Nitzschia pulchra Hustedt- Plate 556/1-8
Op 131, P 310, f 16.
No specimen with the dimensions of that illustrated by Hustedt could be
found. Among the slides with marked and named specimens the following is
here chosen as lectotype:
W4/92. Campeche Bai. 63a.
Finder: 341-1-

370
Isolectotypes:
W4/95* Campeche Bai.
Finder: 375-4.
Zt3/63- Campeche Bay. 63a.
Finder: 289-1-4-
Zt3/67- Campeche Bay. 63a.
Finder: 553-6.
131-9 Nitzschia didyma Hustedt
Op 131, p 310, f 20.
Lectotype:
Zt3/66. Campeche Bay. 63a.
Marked unnamed specimen.
Finder:-J84.2-5 (i-type ??).
Isolectotypes:
W4/93- Campeche-Bai.
Marked specimen named on the label,
Finder: 465-5-8.
Plate 557/1-5
Zt3/70. Campeche Bay. 63a.
Marked, unnamed specimen.
Finder: 253-3-
N.B. The two isolectotypes are only 36 and 38 um long, whereas Hustedt
gives as shortest length 48 pm-
131-10 Nitzschia inducta Hustedt
Op 131, p 311, f 17.
Holotype:
Zt3/70. Campeche Bay. 63a.
Marked, unnamed specimen.
Finder: 290.8 (i-type).
Isotype:
Zt3/66. Campeche Bay. 63a.
Marked, unnamed specimen.
Finder: 520.2.
Plate 557/6-9
131-11 Nitzschia areolata Hustedt
On J 31 n -712, f 15,
Holotype:
Wl/59- Campeche Bay. 63-
Marked specimens named on the label.
Finder: 379-2; 404-2-5 (i-type f 15).
Isotypes:
Zt3/66. Campeche Bay. 63a.
Marked specimens named on index sheet,
Finder: 493-9 (2 specimens).
Rb/88. Campeche Bai.
Marked specimen named on the label.
Finder: 410.2-3.
Plate 558/I-IO
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwei:
371
W4/94. Campeche Bai.
Marked specimen named on the label.
Finder: 525-6.
131-12 Nitzschia ferox Hustedt Plate 558/11-15
Op 131, p 312, f 13-
A specimen fitting the dimensions of Hustedt's illustration could not be
found. Therefore the following lectotype is here selected:
W4/92. Campeche Bai. 63a.
Marked specimens named on the label.
Finder: 284-4] 525-5-
Isolec'c^type:
Zt3/64. Campeche Bay. 63a.
Marked specimen named on index sheet.
Finder: 466.3.
131-13 Nitzschia partita Hustedt Plate 559/1-2
op 131, p 312, f 14.
Holotype:
Zt3/66. Campeche Bay. 63a.
Marked .specimen named on index sheet.
Finder: 493-9-
131-14 Nitzschia halteriformis Hustedt Plate 559/11-13
Op 131, p 312, f 26.
Holotype:
291/82. Andamanen. 3-
Marked specimen named "Ni. tryblionella var." on index sheet.
Finder: 228.9 (i-type).
Isotype:
29I./8I. Andamanen. 1.
Marked specimen named "Ni. trybl. var." on index sheet.
Finder: 43^-4-
N.B. The sculpture of the valve is rather undulate than costate, the
"costae" being formed by curved parts of the general valve membrane. The
striae, not mentioned nor resolved by Hustedt, amount to 40 in 10 urn, and
the striation is not interrupted on the "costae" but is continuous
throughout the valve length. •'
131-15 Nitzschia conformata Hustedt Plate 559/3-10
Op 131, p 313, f 18-19-
Holotype:
Zt3/74. Campeche Bay. 63a.
Marked, unnamed specimens.
Finder: 341.4 (i-type f l8); 348-8-9 (i-type f 19); 502.2.

372
131-16 Nitzschia mollis Hustedt Plate 56o/l-4
Op 131, p 313, f 22.
Holotype:
Zt3/74- Campeche Bay. 63a.
Marked, unnamed specimen.
Finder: 522-5*
131-17 Nitzschia divergens Hustedt Plate 560/5-13-
Op 131," p 313, f 23-25.
The three illustrated specimens are on three different slides, always
marked but not named. As lectotype \s^ selected:
Zt3/99- Campeche Bay. 63a.
Finder: 471-5 (i-type f 23).
Isolectotypes:
Zt3/70. Campeche Bay. 63a. Zt3/72. Campeche Bay. 63a.
Finder: 350-2-5 (i-type f 24). Finder: 583-6 (i-type f. 25).
131-18 Nitzschia rectangulata Hustedt Plate 560/14-17
Op 131, p 313, f 21.
Holotype:
2t3/70, Campeche Bay. 63a.
Marked, unnamed specimen.
Finder: 554-4-
Isotype:
Zt3/72. Campeche Bay. 63a.
Marked, unnamed specimen.
Finder: 583.6.
Op. 132. Diatomeen aus der Lebensgemeinschaft des Buckelwals (Megaptera
nodosa Bonn.). Arch. Hydrobiol. 46, 286-298, 1952.
132-1 Stauroneis olympica Hustedt Plate 561/I-6
Op 132, p 287, f 1-5-
Holotype:
Nal/77- Rofimeer, Antarktis, an Buckelwal.
The taxon is unmarked, abundant, named on the label.
132-2 Licmophora onassis Hustedt Plate 56l/lO-l6
Op 132, p 289, f 8-12.
Of the two slides with the taxon's name on their labels I select the one
mounted in Hyrax as lectotype:
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaq,
373
Jd/55- Roflmeer, Antarktis, an Buckelwal.
The taxon is unmarked, abundant.
Isolectotype:
Jd/56. Rofimeer, an Wal.
Made from the same sample, mounted in realgar (now fairly disintegrated).
Another slide was used for obtaining intact girdle views to show the
peculiar frustular symmetry discussed below. The material is evidently
identical with that on the two slides above and may as well also be
considered as isolectotype:
¥2/84. Roftmeer, Antarktis, an Buckelwal.
N.B. Hustedt's observations of the presenc e/ab sence of a labiate
process (termed "Porus" by him) are incomplete. It is true that one valve
of a frustule has a labiate process*'near the foot pole, whereas the other
valve lacks it. This latter valve, however, has one labiate process near
the head pole which, in turn, the other valve does not possess. This is
a rather unique situation, which eluded Hustedt's attention.
132-3 Nitzschia barkleyi Hustedt Plate 561/7-9
Op 132, p 293, f 13-14-
Holotype:
W2/84- RoGmeer, Antarktis, an Buckelwal.
Marked specimen named on the label.
Finder: 646.6.
N.B. Hasle (Skr. Norske Vidensk.-Akad. I. Mat. Nat. K1-, N.S. 18,
p 30, 1965) found that this taxon is conspecific with and thus a younger
synonym of Nitzschia lineola Cleve.
Op. 134. Neue und wenig bekannte Diatomeen. III. Ber. Deutsch. Bot. Ges.
65, 133-144, 1952.
134-1 Peronia brasiliensis Hustedt Plate 562/1-7
Op 134, p 134, f 1-2.
Holotype:
318/23. Lago Jurucui, an Pflanzen. 252. Brasilien.
Marked specimens named on index sheet.
Finder: 285-7 (i-type f 1); 488.3 (i-type f 2).
Paratype:
318/2. Lago Jurucui. Plankt. 13.11.47- Brasilien. 58.
Marked specimen named on index sheet.
Finder: 556.2.
N.B. In op 136, p 275, Hustedt transfers this taxon to his new genus
Peroniopsis (tx 136-I). This latter genus, however, has been included in
Peronia Brebisson & Arnott ex Kitton by Ross (Ann. Mag. Nat. Hist., ser.
12, 9, P 76-80, 1956).

374
134-2 Actinella peronioides Hustedt Plate 562/8-10
Op 134, p 134, f 4.
Holotype:
L4/67* Lago Jurucui, an Pflanzen. Brasilien. 252.
Marked specimen named on the label.
Finder: 373-1-
134-3 Actinella eunotioides Hustedt Plate 562/13-17
Op 134, p 135, f 3.
There are several slides with marked specimens, all named on index sheets.
Holotype:
318/3. Lago Jurucui. Plankt. 13.11.47- Brasilien. 58.
Finder: 283-8 (i-type f 3).
Isotypes:
3l8/l. Lago Jurucui. Plankt. 13-11.47- Brasilien. 58.
Finder: 589-2.
318/2. Lago Jurucui. Plankt. 13.11.47- Brasilien. 58.
Finder: 319-7-
X10/68. Lago Jurucui. Plankt. 13-11.47- Brasilien. 58.
Finder: 341-7-
Further slide:
322/5b. Igarape do Tento. Brasilien. 209-
Finder: 371-8.
134-4 Actinella robusta Hustedt Plate 563/1-5
Op 134, p 135, f 6.
Holotype:
318/2. Lago Jurucui. Plankt. 13.11.47- Brasilien. 58.
Marked specimen named on index sheet.
Finder: 579-2 (i-type).
_i.SCtVpCC .-
318/1. Lago Jurucui. Plankt. 1.3.11.47- Brasilien. 58.
Marked specimen named on index sheet.
Finder: 375-1-
318/3. Lago Jurucui. Plankt. 13.11.47- Brasilien. 58.
Marked specimens named on index sheet.
Finder: 318.3; 401.5; 555-3-
Further slide:
La/24. Igarape Grande. Brasilien. 211a.
The species is unmarked, frequent, named on the label.
134-5 Actinella tasmaniensis Hustedt Plate 564/1-9
Op 134, P 136, f 5-
Holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*:
375
345/45b. Tasmanien 7. Lake Dobson. a.
Marked specimens named on index sheet.
Finder: 436-3; 488.4-5 (i-type f 5); 491-4; 499-8; 612-3-
134-6 Eunotia conversa Hustedt Plate 565/1-8
Op 134, p 136, f 25-
Holotype:
318/24. Lago Jurucui, an Pflanzen. 252. Brasilien.
Marked specimen named on index sheet.
Finder: 382.2 (i-type f 25).
Isotype:
L4/67. Lago Jurucui, an Pflanzen. Brasilien. 252. '--
Marked specimens named on the label.
Finder: 372.1; 411-6- 428.8; 430.8; 433-9; 523-4-5; 524-3-6.
Further slide:
318/8. Lago Jurucui. Plankt. 2.2.48. Brasilien. 62.
Marked, unnamed specimen.
Finder: 646.4.
134-7 Eunotia synedraeformis Hustedt Plate 566/1-8
Op 134, p 137, f 8.
Holotype:
L4/41- Lago Jurucui. Brasilien. 254a.
This is a Styrax mount with a few picked valves of which it is difficult
to identify the iconotype. The specimen photographed is at finder position
465.5-6. All valves are bent about the transapical axis in apical direction
so that only a small portion can be properly focused. Of another specimen
(finder 466.1) only the ends are here given. The taxon's name is on the
label of the slide.
134-8 Eunotia synedraeformis var. angusta Hustedt Plate 567/I-8
Op 134, p 137 (no illustration)-
Holotype:
XI0/68. Lago Jurucui. Plankt. 13.11.47- Brasilien. 58.
Marked specimens named on index sheet.
Finder: 255.7; 378.6.
134-9 Eunotia curvula Hustedt Plate 568/1-5
Op 134, p 137, f 24-
Holotype:
L4/48. Rio Erereri-Tal. Brasilien. S. 84.
Marked specimens named on the label.
Finder: 198-9 (i-type); 522.9.
N.B. The minimal length given by Hustedt (150 urn) must be corrected
to 115 urn which is the length of Hustedt's iconotype.

376
134-10 Eunotia longissima Hustedt Plate 569/1-3
Op 134, p 138, f 9-
Holotype:
324/51a. Rio Erereri-Tal. Moos. S. 84. Brasilien.
Marked, unnamed specimen.
Finder: 529.4-5-
Isotypes, all mounts with picked valves named on the labels:
14/38. Rio Erereri-Tal, Brasilien, S. 84.
W39. Rio Erereri-Tal, Brasilien, S. 84.
L4/40. Rio Erereri-Tal, Brasilien, S. 84.
Hustedt evidently preferred to draw a Hyrax-mounted specimen than one of
his picked valves in the Styrax slides.
134-11 Eunotia asterionelloides Hustedt Plate 570/1-6
Op 134, p 138, f 18-19-
Holotype:
14/62. Lago Jurucui. Plankt. 12.2.48. Brasilien. 64.
Marked specimens named on the label.
Finder: 313-7; 461.6-9; 550.1-2 (i-type f 19); 552.8; 610.2; 615-1 (i-type
f 18).
Paratype:
L4/63. Lago Jurucui. Plankt. 2.2.48. Brasilien. 62.
Marked specimens named on the label.
Finder: 284.1-4; 285-8-9; 318.3; 372.3; 378.5-6.
Further slides:
318/2. Lago Jurucui. Plankt. 13.11.47- Brasilien. 58.
Marked specimen named on index sheet.
Finder: 407-9-
Kb/91. Amazonas. PI. 12.3.48. Brasilien. 134.
Marked specimens named on the label.
Finder: 494.6-9; 554-5; 587-8.
The taxon is also named on the labels of the following slides on which
it is frequent and therefore not marked:
14/61. Rio Tapajoz. PI. Brasilien. 5-12-56. Ge.
14/84. Rio Tapajoz. PI. 12.7.47. Brasilien. 119.
14/85. Rio Tapajoz. PI. 25.6.48. Brasilien. 117-
14/86. Rio Tapajoz. PI. 4-3-48. Brasilien. 109.
14/87. Rio Tapajoz. PI. 26.2.48. Brasilien. 107-
134-12 Eunotia copiosa Hustedt Plate 570/7
Op 134, p 140, f 10.
Although the specimen cited below does not exactly fit with the strial
irregularities depicted by Hustedt, it is the only one fitting in size
with his illustration and is therefore considered as the holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
377
L5/3- Rio Erereri-Tal. Brasilien. S. 84.
Marked specimen named on the label.
Finder: 412.5-6.
Isotypes, both with marked specimens named on the labels
14/50. Rio Erereri-Tal. Brasilien. S. 84.
Finder: 467-1-
14/51. Rio Erereri-Tal. Brasilien. S. 84.
Finder: 488.6.
134-13 Eunotia sinuosa Hustedt Plate 562/11-12
Op 134, P 141, f 17.
Holotype:
L4/44. Rio Erereri-Tal. Brasilien. S. 84.
A single mount with the i-type, named on the label.
Isotypes, all with name on the labels:
14/42. Rio Erereri-Tal. Brasilien. S. 84.
A single mount.
14/43. Rio Erereri-Tal. Brasilien. S. 84.
Single mount.
I4/89. Rio Erereri-Tal. Brasilien. S. 84.
Another single mount.
14/53- Rio Erereri-Tal. Brasilien. S. 84.
A strewn.slide with marked specimens.
Finder: 253.4; 643-6; 678.1.
134-14 Eunotia braunii Hustedt Plate 571/16-I9
Op 134, p 141, f 23-
There are three slides with marked specimens named on index sheets. As
lectotype is chosen:
318/26. Lago Jurucui. An Pflanzen. 252. Brasilien.
Finder: 587.1.
Isolectotypes:
318/23. Lago Jurucui. An Pflanzen. 252. Brasilien.
Finder: 434-5-6; 550.8.
318/25- Lago Jurucui. An Pflanzen, 252. Brasilien.
Finder: 465-7 (this specimen is unnamed).
134-15 Eunotia convexa Hustedt Plate 571/1-6
Op 134, p 141, f 11-12.
As lectotype is here selected:
318/26. Lago Jurucui, an Pflanzen. Brasilien. 252.
Marked specimens named on index sheet.
Finder: 438.6; 532.5 (i-type f 12).
Further slides:

378
318/1. Lago Jurucui. Plankt. 13.11.47. Brasilien. 58.
Marked specimen named on index sheet.
Finder: 370.9.
318/2. Lago Jurucui. Plankt. 13.11.47. Brasilien. 58.
Finder: 398.5-
14/53. Rio Erereri-Tal. Brasilien. S. 84.
Marked specimens named on the label.
Finder: 469*1; 560.1.
134-16 Eunotia conrexa forma impressa Hustedt Plate 571/7-10
Op 134, p 141, f 7-
As lectotype is chosen a marked, unnamed specimen, the only one that can
be combined with Hustedt's illustration:
318/34. Lago Jurucui, Siidufer. Ast. ;
Finder: 522.3.
Further slides, perhaps paratypes. with marked specimens named on index
sheets:
318/23. Lago Jurucui, an Pflanzen. Brasilien. 252.
Finder: 615.3.
318/26. Lago Jurucui. An Pflanzen. Brasilien. 252.
Finder: 585*1-2-
318/27. Lago Jurucui. An Pflanzen. Brasilien. 252.
Finder: 616.5-6.
134-17 Eunotia obtusa Hustedt Plate 572/1-4
Op 134, p 142, f 26.
Holotype:
3l8/l. Lago Jurucui. Plankt. 13.11-47. Brasilien. 58.
Marked specimen named on index sheet.
Finder: 681.2 (i-type).
Isotypes, marked specimens named on index sheets:
318/3. Lago Jurucui. Plankt. 13-11.47. Brasilien. 58.
Finder: 494.8.
X10/68. Lago Jurucui. Plankt. 13.11-47- Brasilien. 58.
Finder: 528.7.
N.B.. In Hustedt's copy of the paper there is a pencil note in his hand
concerning the length: "72 u".
134-18 Eunotia vasta Hustedt Plate 569/4-5
Op 134, p 142, f 22.
Holotype:
L4/46. Rio Erereri-Tal. Brasilien. S. 84.
A slide with three picked specimens, including the i-type, named on the
label.
SCANNED SdJVUED BY P™ YURI. Kiev-200V.e-.ai!
379
Isotypes with names on the labels:
L4/45. Rio Erereri-Tal. Brasilien. S. 84.
This is a single mount.
L4/49- Rio Erereri-Tal. Brasilien. S. 84.
A strewn slide with a marked specimen.
Finder: 470.8.
134-19 Eunotia inscita Hustedt Plate 573/1-3
Op 134, p 142, f 16.
Holotype:
L4/47. Rio Erereri-Tal. Brasilien. S. 84.
A single mount, named on the label.
134-20 Eunotia biseriata Hustedt Plate 567/9-11
Op 134, p 143, f 20.
Holotype:
324/51a. Rio Erereri-Tal. Moos. S.84. Brasilien.
Marked, unnamed specimen.
Finder: 586.8.
134-21 Eunotia siolii Hustedt Plate 571/11-15
Op 134, p 143, f 13-15.
As lectotype is here selected:
L4/53- Rio Erereri-Tal. Brasilien. S. 84.
Two marked, unnamed specimens in the same circle, one being i-type f 15-
Finder: 442-2.
Isolectotypes with marked, unnamed specimens:
L4/48- Rio Erereri-Tal. Brasilien. S. 84.
Finder: 320.5.
L4/49- Rio Erereri-Tal. Brasilien. S. 84-
Finder: 470-7.
324/51a. Rio Erereri-Tal. Brasilien. S. 84.
Finder: 222.5-6; 375-5-6; 500.7-8.
134-22 Eunotia bisulcata Hustedt
Op 134, p 143, f 21.
Holotype:
L4/36. Rio Erereri-Tal. Brasilien. S.
A single mount with the i-type, named
Isotypes:
L4/37- Rio Erereri-Tal. Brasilien. S.
Another single mount with the taxon's
Plate 572/5-7
84.
on the label.
84.
name on the label.

380
14/48. Rio Erereri-Tal. Brasilien. S. 84.
A strewn slide with a marked specimen named on the label.
Finder: 346.8-9-
A specimen larger than the maximum length given in the diagnosis was marked
and named on the label by Hustedt on the following slide:
L4/65- Igarape Grande, Brasilien. 211a.
Finder: 377-4-
Op. 135. Neue und wenig bekannte Diatomeen. IV. Bot. Notiser 1952 ,
366-410, 1952.
135-^1 Rhizosolenia braunii Hustedt Plate 574/1-6
Op 135, p 367, f 1-5-
Holotype:
318/14. Lago Jurucui. Plankt. 30.3.48. Brasilien. 68.
Marked, unnamed specimens, i-type f 1 and 5 In the same circle.
Finder: 314-1-
The taxon is frequent on this slide and on others with material from the
same lake.
135-2 Melosira robusta Hustedt Plate 575/1-6
Op 135, p 369, f 16-20.
As lectotype is proposed:
A2/67- Grotekop, Tafelberg, an Felsen. Melosira robusta. Schonken 147.
The taxon is abundant, also marked.
Finder: 469-4; 585.1.
Isolectotypes:
A2/65- Grootekop, Table Mountain, Fels. 147- Melosira robusta.
A2/66. Grootekop, Table Mountain, Fels. 147- Melosira robusta.
Marked inteiior valves.
Finder: 53?.2.
135-3 Melosira pulchella Hustedt Plate 576/1-5
Op 135, p 372, f 13-15-
None of the specimens illustrated by Hustedt could be found. Lectotype:
287/28b. Sumba. c.
Marked, unnamed specimen.
Finder: 407-5-6.
Further unnamed specimens are marked on the following slides:
287/24b. Sumba. 115a. 287/40- Sumba. g.
Finder: 261.9- Finder: 498.3-
287/27- Soemba. b.
Finder: 38O.9.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
381
135-4 Melosira canadensis Hustedt Plate 577/1-4
Op 135, p 372, f 21-30.
The species is abundant in the two samples named by Hustedt. He did not
mark any of the specimens illustrated. There are three slides bearing the
taxon's name on their labels of which I select here as lectotype:
A2/79- Quesnel. 2. Kanada.
Isolectotype:
A2/80. Quesnel. Kanada. 1.
The third slide:
A3/H. Harper. East Oregon. U.S.A.
N.B. This taxon was transferred to the genus Aulacoseira Thwaites by
Simonsen (Bacillaria 2, p 57, 1979)-
135-5 Cyclotella elgeri Hustedt Plate 578/1-6
Op 135, p 374, f 31-
There are two slides in the collection bearing the taxon's name on their
labels. The species is almost pure, and no specimen was marked. Therefore
the folowing slide is determined as lectotype:
Acl/96. Siskyon County, Californien.
Isolectotype:
Acl/95- Siskyon County, Californien.
135-6 Cyclotella tenuistriata Hustedt Plate 575/7-11
Op 135, p 375, f 32-33-
No type was designated, and no marked specimens exist. The taxon is named
on the labels of the following slides of which the first-cited shall be
the lectotype:
Acl/90. Lunz, Untersee. Abflufi. 9.4-40.
Isolectotypes:
Ac1/91. Lunz, Untersee. Abflufc. 9.4-40.
Acl/92. Lunz, Untersee. Abfluft. 9-4-40.
N.B. All slides have, in Hustedt1s hand, on their labels the addition
"= C. helvetica Bran.", but on the lectotype slide this is crossed out
again. Hustedt may have thought of Actinocyclus helveticus Brun 1.895,
a Cyclotella of doubtful identity.
135-7 Cyclotella delicatula Hustedt Plate 579/1-12
Op 135, p 376, f 34-36.
There is only one slide labelled with the species name which was mounted
before the time in question. No specimen is marked, the taxon is quite
frequent. This is a mount in a low-refracting medium, and it must be
considered as the holotype:
Acl/87. Kienberg-Graming. Nied. Osterreich. Seebachlacke, 12.8-51-
There are two further slides from the same locality, also named on the

382
labels, mounted 1954- in Hyrax:
Acl/88. Kienberg-Graming. Nied. Osterreich. Seebachlacke.
Acl/89. Kienberg-Graming. Nied. Osterreich. Seebachlacke.
135-8 Cyclotella bituminosa Hustedt Plate 579/13-15
Op 135, p 377, f 39-40-
Holotype:
Acl/97- Steinheim a. A. 23 m. Bitum. Kalk.
A strewn slide with the taxon's name on the label. No specimen is marked.
We succeeded in finding the illustrated specimens at the following finder
positions: 318.6 (i-type f 39); 711-5 (i-type f 40).
N.B. The different optical appearance of the central parts in Hustedt's
and our micrographs must be attributed to undue stopping down of the
condenser diaphragm by Hustedt.
135-9 Stephanodiscus excentricus Hustedt Plate 576/6-10
Op 135, p 378, f 37-38.
Holotype:
Ah/48. Dicalite Co. 3* Terrebonne, Oregon.
A strewn slide with the taxon's name on the label. No specimen of this
very frequent species is marked.
135-10 Fragilaria inflatissima Hustedt Plate 58O/I-6
Op 135, p 379, f 44-45.
Holotype:
318/2. Lago Jurucui. Plankt. 13-11.47. Brasilien. 58.
Marked specimens named on index sheet.
Finder: 399-7-8 (i-type f 45); 498.1-2; 556.3 (i-type f 44).
Another specimen was accidentally marked, along with another taxon, on
the following slide:
318/34. Lago Jurucui. Siidufer. Ast. Brasilien. 253*
Finder; 522.3.
135-11 Fragilaria braunii Hustedt Plate 580/7-13
Op 135, p 379, f 41-42.
Holotype:
318/2. Lago Jurucui. Plankt. 13-11.47. Brasilien. 58.
Marked specimens named on index sheet.
Finder: 494-2-5 (i-type f 41); 557-7 (i-type f 42).
An unmarked specimen at finder position 464.7, only 86 urn long, was
additionally photographed.
Another slide bears the species name, but no specimens are marked:
A2/76. Lago Jurucui. Plankt. 30-3.48. Brasilien. 68.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwei:
135-12 Fragilaria siolii Hustedt
Op 135, p 380, f 43-
Holotype:
318/23. Lago Jurucui, an Pflanzen. 252. Brasilien.
Marked specimen named on index sheet.
Finder: 312.1-4.
Further slides with marked specimens named on index sheets:
318/2. Lago Jurucui. Plankt. 13.11.47- Brasilien. 58.
Finder: 527-5-6-
322/20b. Igarape Grande. Brasilien.. 211.a.
Finder: 316.5-6.
135-13 Eunotia taeniata Hustedt Plate 582/1-5
Op 135, p 380, f 46-48.
There are two slides in the collection bearing the species name on their
labels. Both have marked specimens, but none of these appears to
correspond with Hustedt's illustrations. Therefore the following slide is here
selected as lectotype:
L4/34- Dubravica, Ungarn. 2.
Finder: 522.7 (i-type f 48?); 581.3; 614-8.
Isolectotype:
L4/33- Dubravica, Ungarn.
Finder: 405-5-8.
135-14 Eunotia subtaeniata Hustedt Plate 582/6-9
Op 135, p 382, f 49-50-
There are two slides with marked, unnamed specimens. As lectotype is here
proposed:
295/73. Quesnel. 1. Kanada.
Finder: 317.1-4 (i-type f 49); 347-9; 523-9.
Isolectotype:
295/74. Quesnel. 2. Kanada.
Finder: 348.3 (i-type f 50).
135-15 Eunotia subtaeniata forma simplex Hustedt Plate 582/lO-H
Op 135, P 383, f 51.
Holotype:
295/73. Quesnel. 1. Kanada.
Marked, unnamed specimens.
Finder: 437-5 (i-type f 5D; 523-9-
Isotype:
295/74. Quesnel. 2. Kanada.
Marked, unnamed specimens.
Finder: 371.2; 435-9-
383
Plate 581/1-5

384
135-16 Achnanthes manguinii Hustedt Plate 581/6-I6
Op 135, p 383, f 52-56.
As lectotype is designated:
Ma3/36. Kerguelen. 37-b. Jan. 02.
Marked specimens named on the label.
Finder: 404-2; 408.2-3; 429.2; 463.2-3.
Isolectotype:
314/lOa. Kerguelen XL. 37.a. Jan. 02.
Marked specimens named on index sheet.
Finder: 257.3; 282.6-9; 289-3; 291.5-
135-17 Achnanthes pseudolanceolata Hustedt Plate 583/1-10
Op 135, p 384, f 78-81.
As lectotype is determined:
Ma3/30. Kerguelen Station. 11.2.02.
Marked specimens named on the label.
Finder: 522-7; 591-2; 640.4-
Further slides with marked specimens named on index sheets:
314/l0b. Kerguelen XL. 37.a. Jan. 02.
Finder: 256.4-7.
314/11. Kerguelen XL. 37.a. Jan. 02.
Finder: 650.6.
N.B. The specimens marked and named by Hustedt are smaller in size
than given in the description, 11-12 ^un. This indicates that Hustedt's
illustrations are magnified xl500 and not xlOOO.
135—18 Achnanthes magnifica Hustedt Plate 583/11-20
Op 135, p 385, f 62-65-
Holotype:
323/68. Itatiaia Gebirge. Moos. +1000 m. Brasilien. S.3.
Marked specimens named on index sheet.
Finder: 254-7 (i-type f 64)-; 587-4-5 (i-type f 62-63); 615-4-
Further slides:
Ma3/41. Demerara River. 9-
Styrax slide mounted 1912 with marked specimens named on the label.
Finder: 410.8; 702.1-2.
318/24. Lago Jurucui, an Pflanzen. 252. Brasilien.
Marked specimen named on index sheet.
Finder: 255.6-9.
135-19 Achnanthes bicapitata Hustedt Plate 584/1^11
Op 135, P 386, f 68-71-
Holotype:
SdJVUED BY pAMJTA yURI, Kiev-2007, e-mail pahutaqwe*:
385
19l/24- Festhelsvatn, Norwegen.
Marked, unnamed specimens.
Finder: 310.8; 369-9; 407-5; 427-6; 518.3-6; 548.6; 615.8; 643-9-
135-20 Achnanthes amoena Hustedt Plate 583/21-24
Op 135, p 386, f 66-67.
Holotype:
230/70. Kamerun. Lagune. 1.b.
Marked, unnamed specimen.
Finder: 310.6.
135-21 Achnanthes modica Hustedt Plate 584/12-15
Op 135, P 388, f 72-75-
Holotype:
204/49- Norwegen. 2.T. Drammensfjord, 115 m.
Marked, unnamed specimens.
Finder: 310.8 (i-type f 74-75); 408.4-7-
135-22 Achnanthes heterostriata Hustedt Plate 583/25-28
Op 135, p 388, f 85-86.
Holotype:
Zt3/67- Campeche Bay. 63a.
Marked specimen named "Achn." on index sheet.
Finder: 490.2-5-
N.B. The raphe valve of this specimen is furnished with a stigma in
the central nodule, which remained unnoticed by Hustedt.
135-23 Achnanthes solea Hustedt Plate 584/16-22
Op 135, P 389, f 60-61.
There are two slides with marked specimens named t:Achn." on index sheets.
As lectotype is acxecteor. — —~
202/13b. Norwegen. Snigsfjord. 7B.b. „
Finder: 378.8; 467-3-
Isolectotype:
202/l9b. Norwegen. Snigsfjord. 7B.f.
Finder: 403-2-5-
N.B. The same specimens were used for the description of Achnanthes
ignota Hustedt which is therefore invalid (cf. tx l6l-3).
Reimer (in Patrick & Reimer, Monogr. Acad. Nat. Sci. Philadelphia 13,
p 255, 1966) renames this taxon: Achnanthes wellsiae Reimer, because of
Achnanthes solea Zimmermann 1917-

386
135-24 Achnanthes campechiana Hustedt Plate 585/1-15
Op 135, p 389, f 87-90.
There are four slides with marked, unnamed specimens. As lectotype is here
taken:
Zt3/74- Campeche Bay. 63a.
Finder: 377-4-5 (i-type f 89-90?).
Isolectotypes:
Zt3/62. Campeche Bay. 63a. Zt3/66. Campeche Bay. 63a.
Finder: 38O.7-8. Finder: 495*2.
Zt3/64. Campeche Bay. 63a.
Finder: 466.3-6.
N.B. The structure in the axial area a. s depicted by Hustedt in his
fig 87 is a misinterpretion. Its appearance in our micrographs of the
lectotype is brought about by the striae of the raphe valve.
135-25 Achnanthes oculata Hustedt Plate 585/l6-21
Op 135, p 390, f 91-94.
None of the marked specimens in the collection is named. Closest with figs
91-92 is the following which is here selected as lectotype:
Zt3/77- Campeche Bay. 63a.
Finder:' 523.5-8.
Isolectotype:
Zt3/72. Campeche Bay. 63a.
Finder: 529-8.
135-26 Achnanthes oculata forma rostrata Hustedt Plate 585/22-34
Op 135, p 390, f 95-98.
Marked, unnamed specimens are on three slides. Lectotype:
Zt3/63. Campeche Bay. 63a.
Finder: 259-6; 467-5 (i-type f 97-98).
Zt3/7n.. Campeche Bay. 63* - Zt.3/7?. ^.mpeche Bay, 63a.
Finder: 372.5-6 (I-type f 95-96). Finder: 645-1-2-
135-27 Achnanthes pseudohexagona Hustedt Plate 586/I-8
Op 135, p 391, f 82-84.
The taxon is marked on three slides, always named on corresponding index
sheets. As lectotype is selected:
Zt3/67. Campeche Bay. 63a.
Finder: 460.4; 584-1-2.
Isolectotypes:
Zt3/63- Campeche Bay. 63a.
Finder: 408.3.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
Zt3/65- Campeche Bay. 63a.
Finder: 469-2-5; 614-4-7-
Zt3/77- Campeche Bay. 63a.
Finder: 523-5-6.
387
135-28 Cocconeis pulcherrima Hustedt
Op 135, p 392, f 99-10.
Holotype:
XI0/88. Demerara River. 86c. S.A.
Marked specimen named on index sheet.
Finder: 491-5 (i-type f 99-100).
Further slides with marked specimens named on index sheets
323/68. Itatiaia Gebirge. Moos. +1000 m. S.3.
Finder: 345-9-
323/69b. Itatiaia Gebirge. Moos. +1000 m. S.3.
Finder: 579-6.
Plate 587/1-4
135-29 Frustulia linkei Hustedt
Op 135, p 393, f 102.
Holotype:
Nc/48. NeOmersiel. 6l. Verlandungszone. a.
Marked specimens named "Frustulia" on the label.
Finder: 317-5 (i-type f 102); 380.6.
135-30 Stauroneis lignitica Hustedt
Op 135, p 394, f 101.
Plate 587/5-8
Plate 587/13-14
Holotype:
Nal/69. Sendai - Japan. Lignit.
A slide with two picked specimens of equal length, named on the label.
135-31 Navicula longifissa Hustedt
»jp *3-j, p j94, J- ui.
There are four slides with marked and unnamed specimens. Holotype:
N15/29. Ssetanai. J-apan. 16.
Finder: 463.2-5.
Plate 587/9-12
Isotypes:
N15/2. Ssetanai. Japan. 20..
Finder: 487-3-
N15/19. Ssetanai. Japan. 60.
Finder: 346.2-5.
N15/20. Ssetanai. Japan. 60,
Finder: 530.4-7-
N.B. Hustedt's illustration is magnified xl500 and not xlOOO as stated
in the paper, the i-type is about 35 urn long, the other specimens measure
30, 37, and 47 um in length. The description has to be corrected
accordingly. Neither the i-type nor any of the other specimens have a central
stigma which Hustedt claims to have observed.

388
135-32 Navicula valdestriata Hustedt Plate 588/1-5
Op 135, p 396, f 103.
Holotype:
NV7/28. Rumanien. 3.
Marked specimens named on index sheet.
Finder: 462.1 (i-type f 103)} 676.9.
135-33 Navicula schubartii Hustedt Plate 588/6-8
Op 135, p 396, f 104.
Holotype:
3l6/la. Rio Mogi-guassu. Litoral. Brasilien (Sch.l).
Marked, unnamed specimen.
Finder: 228.1-4.
135-34 Navicula siolii Hustedt Plate 588/9-10
Op 135, p 397, f 105.
Holotype:
324/60a. Cachoeira Flechal. Rio Cupari. Brasil. Sioli 89.
Marked specimen named on index sheet.
Finder: 344-6.
135-35 Navicula oppressa Hustedt Plate 586/9-10
Op 135, P 397, f 119.
Holotype:
316/63. Rio Claro. Mun. Sta. Rita. Brasilien. (Sch.32),
Marked, unnamed specimen.
Finder: 436.8.
135-36 Navicula bicephala Hustedt Plate 588/H-I3
Op 135, V 398,- f 106.
Holotype:
314/10a. Kerguelen. XL. 37a. Jan. 02.
Two marked specimens, one the i-type, in the same circle, named on index
sheet.
Finder: 196.9.
Isotype:
314-12. Kerguelen. XL. 37a. Jan. 02.
Marked specimen'named on index sheet.
Finder: 226.1-4-
135-37 Navicula parunculus Hustedt Plate 589/1-4
Op 135, P 398, f 115-
Holotype:
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweSrambler.
389
N17/27. Rumanien. 1.
Marked, unnamed specimen.
Finder: 377-7-
N.B, It remained unnoticed by Hustedt that there is a stigma at the
end of a central stria. This is present in both valves of the type
frustule.
135-38 Navicula pseudoparunculus Hustedt Plate 589/7-11
Op 135, p 398, f 112-113-
Holotype:
318/23. Lago Jurucui, an Pflanzeh. 252. Brasilien.
Marked specimens named on index sheet.
Finder: 343-3 (i-type f 113); 437-1-4-
N.B. The course of the two outer raphe fissures is rather undulate,
whereas Hustedt described the raphe as straight.
135-39 Navicula parunculoides Hustedt Plate 589/12-17
Op 135, p 399, f 114.
Holotype:
318/23. Lago Jurucui, an Pflansen- 252. Brasilien.
Marked specimens named on index sheet.
Finder: 313-1 (i-type f 114); 403-2-5-
Paratype:
XI0/68. Lago Jurucui. Plankt. 13.11.47- Brasilien. 58.
Marked specimen named on index sheet.
Finder: 317-1-4-
N.B. There is a very narrow rib running along the edge of valve face/
valve mantle which interrupts the striae, which situation was not observed
by Hustedt. This species is very similar to and probably conspecific with
Cymbella decipiens Hustedt, see tx 153-5-
135-40 Navicula habita Hustedt" ""' Plate 589/5-6
Op 135, p 399, f 116.
Holotype:
N17/29. Rumanien. 4-
Marked specimen, unnamed.
Finder: 621.1.
135-41 Navicula pseudoclementis Hustedt Plate 586/11-13
Op 135, p 400, f 107-
Holotype:
318/23. Lago Jurucui, an Pflansen. 252. Brasilien.
Marked specimen named on index sheet.
Finder: 555-7-8.

390
135-42 Navicula subclenientis Hustedt
Op 135, p 400, f 108.
Holotype:
A2/79. Quesnel. 2. Kanada.
Markedj unnamed specimen.
Finder: 495-5-
135-43 Navicula punctifera Hustedt
Op 135, p 401, f 109-m.
As lectotype is here proposed:
324/60a, Cachoeira Flechal. Rio Cupari.
Marked specimen named on separate sheet
Finder: 463.2 (i-type f 111).
Further slide:
318/23. Lago Jurucui, an Pflanzen. 252.
Marked, unnamed specimen.
Finder: 610.9 (i-type f 109).
135-44 Navicula conveniens Hustedt
Op 135, p 402, f 123-
Holotype:
324/60a. Cachoeira Flechal. Rio Cupari.
Marked specimen named on index sheet.
Finder: 255.8.
135-45 Navicula subconveniens Hustedt
Op 135, p 402, f 124.
Holotype:
324/60a. Cachoeira Flechal. Rio Cupari.
Marked specimen named on index sheet.
Finder: 286.8.
135-46 Navicula perelegans Hustedt
Op 135, P 403, f 127.
Holotype:
324/60a. Cachoeira Flechal. Rio Cupari.
Marked specimen named on index sheet.
Finder: 495.2.
135-47 Navicula reversa Hustedt
Op 135, P 403, f 122.
Holotype:
Plate 586/14-15
Plate 590/6-9
Brasil. Sioli 89.
Brasilien.
Plate 590/10-11
Brasil. Sioli 89-
Plate 590/1-2
Brasil. Sioli 89.
Plate 590/12-13
Brasil. Sioli 89.
Plate 590/3-5
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei':
391
324/60a. Cachoeira Flechal. Rio Cupari. Brasil. Sioli 89.
Marked specimens named on index sheet.
Finder: 254-5; 555-5 (i-type f 122).
N.B. VanLandingham (Catalogue 5, p 2768, 1975) renames this taxon:
Navicula neoreversa VanLandingham, because of Nav. reversa Mann 1926.
135-48 Navicula brehmioides Hustedt Plate 59l/l-2
Op 135, p 404, f 118.
Holotype:
324/60a. Cachoeira Flechal. Rio Cupari. Brasil. Sioli 89.
Marked specimen named on index sheet.
Finder:- 430.2-3.
135-49 Navicula meridionalis Hustedt Plate 591/3-7
Op 135, p 404, f 120.
Holotype:
3H/l0a. Kerguelen. XL. 37a. Jan. 02.
Marked specimen named on index sheet.
Finder: 228.1.
135-50 Navicula areolata Hustedt Plate 591/14-17
Op 135, P 405, f 126.
Holotype:
245/94a. Magalicsberge. Rastenburg. S-Afrika. Fels, 1.
Marked unnamed specimens.
Finder: 282.2-3; 375-4; 522.5; 555-2 (i-type f 126).
N.B. In his description Hustedt gives 45-47 M-m as length range. The
four marked specimens range between 48 and 59 M-m, and Hustedt's illustrated
specimen measures 56-5 MJn.
135-51 Navicula adamata Hustedt "" Plate 592/1-4
op 135, p 405, f 125.
As lectotype is here chosen:
N15/17. Ssetanai. Japan. 23-
Marked, unnamed specimen, length about 48 urn.
Finder: 552.2-5-
Isolectotype:
N15/6. Ssetanai, Japan. 18.
Marked, unnamed fragment, original length about 54 M-m.
Finder: 231.2 (there is some possibility that this specimen is the i-type
of Hustedt's f 125, although Hustedt depicted an intact valve.

392
135-52 Navicula pseudoporifera Hustedt Plate 591/8-10
Op 135, p 406, f 117.
Holotype:
N17/28. Rumanien. 3.
Marked specimen named on index sheet.
Finder: 559-4-7 (i-type).
Isotypes, marked and named on index sheets:
N17/29- Rumanien. 4. N15/42. Rumanien. 2.
Finder: 504.1. Finder: 466.4; 524-7-8,- 674.2-3-
135-53 Navicula dispersepunctata Hustedt Plate 590/14-15
op 135, p 406, f 129-130.
As lectotype is here designated:
N17/28. Rumanien. 3.
Marked specimen named on index sheet.
Finder: 678.8 (i-type f 129).
Isolectotype:
N16/88. Rumanien. 8.
Marked specimen named on the label.
Finder: 339-6-9 (i-type f 130), this specimen is in too oblique a position
to be properly photographed.
N.B. In op 175, p 744, Hustedt renames this taxon: Navicula disperse-
punctulata Hustedt, because of Nav. dispersepunctata Skabitschewski 1936.
135-54 Navicula vicina Hustedt Plate 591/11-13
Op 135, p 407, f 128.
Holotype:
324/60a. Cachoeira Flechal. Rio Cupari. Brasil. Sioli 89.
Marked specimens named on index sheet.
Finder: 435-1-4 (i-type f 128); 522.5-
Op. 136. Neue und wenig bekannte Diatomeen. V. Ber. Deutsch. Bot. Ges.
65, 272-276, 1952.
136-1 Peroriiopsis Hustedt
Op 136, p 275.
Type species: Peroniopsis brasiliensis (Hustedt) Hustedt.
Synonym: Peronia brasiliensis Hustedt, op 134> p 134 (see tx 134-1)-
N.B. This genus was, with full justification, included in Peronia
Brebisson & Arnott ex Kitton by Ross (Ann. Mag. Nat. Hist., ser. 12, 9,
76-80, 1956).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
393
Op. 139- La flora de Diatomeas en paredones sobrehumedecidos en El
Salvador. Com. Inst. trop. Invest. Cient. San Salvador 2, 129-138, 1953-
139-1 Achnanthes salvadoriana Hustedt Plate 592/5-14
Op 139, p 132, f 1.
In Hustedt's collection there is only one slide mounted in 1953 that
contains one marked, unnamed raphe valve of this taxon. Two further slides
contain lots of marked specimens, named on the labels, but these were
mounted in 1954 according to the labels. Nevertheless, I select here one
of these latter as lectotype:
Ma3/l4- Los Chorros. El Salvador. 494.
Finder: 401.5-8; 405-5-8; 433-5; 434.7; 438.8; 490.4; 494-5-6; 522.5-6;
529.5-6; 550.1-4; 554.2-5; 581.1; 615-1-4-
Paralectotype:
Ma3/51- Los Chorros. El Salvador. 44b.
Finder: 404-6; 410.1-4; 411-7; 430-8; 460-4-7; 550.3; 581-5-8; 642.2-5-
The mentioned slide from 1953=
335/81. Wand an der Strafie nach La Palma. El Salvador. 122.
Finder: 192.6.
N.B. There is some possibility that Hustedt made his drawings while
still in El Salvador, and with fresh material, i.e. water mounts. With
a Hyrax-mounted slide he would most likely have observed the multiseriate
striae of the rapheless valves which are quite conspicuous. I remember
that Hustedt reported that he was rather urged to present a short
publication during his stay in Salvador.
Op. 140. Diatomeen aus dem Naturschutzpark Seeon. Arch. Hydrobiol. 47,
625-635, 1953-
140-1 Gomphonema abbreviatum forma inflata Hustedt Plate 593/1-2
Op 140, p 630, f 21.
Holotype:
137/68. Bansee, Seeon, Oberbayern. Algen.
Marked, unnamed specimen.
Finder: 316.1-4 (i-type).
140-2 Nitzschia bavarica Hustedt Plate 593/3-6
Op 140, p 631, f 8-9-
Holotype:
137/74- Torfstich am Brunnsee, Oberbayern.
Marked, unnamed specimens.
Finder: 432-9; 460.6.
N.B. Hustedt was unable to resolve the striae. The two specimens have

394
very delicate striae, in our micrographs, taken in oblique illumination,
we counted 42-44 in 10 \xm.
140-3 Nitzschia gessneri Hustedt Plate 593/7-11
Op 140, p 632, f 3-7.
Holotype:
137/69. Brunnsee, Oberbayern.
Marked, unnamed specimens, two in each circle.
Finder: 288.1 (i-types f 3 and 5); 309-3-
140-4 Nitzschia graciloides Hustedt Plate ^93/12-19
Op HO, p 633, f 10-11.
Holotype:
137/74- Torfstich am Brunnsee, Oberbayern.
Marked, unnamed specimens.
Finder: 406.1-4; 412.8-9; 462.2-5; 491-5-
N.B. The striae, invisible to Hustedt, amount to 38-40 in 10 urn.
Op. 141 - Diatomeen aus der Oase Gafsa in Siidtunesien. Arch. Hydrobiol.
48, 145-153, 1953-
Initial remark:
On the slide labels Hustedt always wrote "Gassa" instead of the correct
Gafsa.
141-1 Aehnanthes gessneri Hustedt Plate 594/1-12
Op 141, p 148, f 14-19.
Of Uic Lwo slides with marked - unnamed - specimens the following is here
chosen as lectotype:
246/99. Tunis. Oase Gassa.
Finder: 398.5-8; 409-1-
Isolectotype:
246/100. Tunis. Oase Gassa.
Finder: 435-4; 493-2-5-
141-2 Denticula elegans var. africana Hustedt Plate 594/13-15
Op 141, p 150, f 5-7.
The taxon is not marked but is easily discernible on the slides. As
lectotype is here designated:
246/99. Tunis. Oase Gassa.
SCANNED MJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweSrambler.
395
141-3 Navicula ancisa Hustedt Plate 594/16-19
Op 141, p 150, f 9-
Hustedt failed to mark the specimen he illustrated. On the slide cited
below we found two Navicula specimens of similar shape, one in a very
oblique position which is marked, the other is in a better position but
not marked. This latter specimen, however, measures 19 - 5 \x& in length,
whereas the former is 15 urn long, compared with Hustedt's specimen of about
14 pm. Notwithstanding, the following slide with these specimens must be
considered as the holotype:
246/99- Tunis. Oase Gassa.
Finder position of the marked specimen: 430.9; that of the unmarked: 433-4-
141-4 Nitzschia plicatula Hustedt Plate 594/22-24
Op 141, P 151, f 1-2.
Since the taxon is marked, not named, on two slides, the following slide
is here proposed as lectotype:
246/100. Tunis. Oase Gassa.
Finder: 434.4-5 (i-type f 1).
Isolectotype:
246/99. Tunis. Oase Gassa.
Finder: 439-6-9 (i-type f 2).
141-5 Nitzschia solita Hustedt Plate 594/20-21
Op 141, p 152, f 3-4.
Holotype:
246/100. Tunis. Oase Gassa.
Marked, unnamed specimen.
Finder: 471.4-7.
Qp. 145. Die Diatomeenflcra der' Eifelmaarc, Arch- Hydrobiol. 48, 451-496,
1954-
145-1 Cocconeis thienemannii Hustedt Plate 595/1-21
Op 145, P 465, f 1-9-
There are four slides with marked specimens, all named either on the labels
or on separate index sheets. Of these the following is selected as
lectotype:
N13/98. Pulvermaar. 75 m.
Finder: 252.3-6; 314-4-7 (2 specimens); 345-8; 348.7-
Further slides:
Ml/72. Gemundener Maar. Grund.
Finder: 317-8-9; 376-5; 405-8.

396
Ml/73- Gemundener Maar. Elodea. 3*4.43-
Finder: 316-5-8.
Na2/l7- Weinfelder Maar. 52 m. a.
Finder: 404-5-
145-2 Cocconeis utermoehlii Hustedt Plate 595/31-32
Op 145, p 466, f 10-11.
Holotype:
Ml/72. Gemundener Maar. Grund.
Marked specimen named on the label.
Finder: 374-4-
145-3 Achnanthes rossii Hustedt Plate 595/22-30
Op 145, P 467, f 12-20.
Three slides mounted with three different samples bear marked specimens
named on their labels. As lectotype is here proposed:
Ma3/39- Weinfelder Maar. Litorella-Schlamm. 20-4.43- b.
Finder: 347-9; 433-7; 526.5; 529-8.
Paralectotype:
Ma3/3o1- Weinf elder Maar. Elodea + Potamogeton.
Finder: 256.I.
Further slide:
Ma3/37- Gemundener Maar. Elodea.
Finder: 400-4-7; 431-6-9; 468.8.
145-4 Stauroneis thienemannii Hustedt Plate 595/40-42
Op 145, p 469, f 21-24-
Of the four slides with marked specimens, all named "Stauroneis undata"
on the labels, the following is here designated as lectotype:
Na2/l7. Weinfelder Maar. 52 m. a.
Finder: 343-5 (i-type f 23); 374-4-7 (i-type f 22).
Isolectotype:
Nll/57. Weinfelder Maar. 52 m. a.
Finder: 373-7-
Paralectotype:
Na2/l5- Weinfelder Maar. Elodea + Potamogeton.
Finder: 401-4-7 (i-type f 21).
Further slide:
Na2/l6. Pulvermaar. J m. b.
Finder: 373-7-8.
N.B. In op 157, p 260 (under Stauroneis borrichii), Hustedt synonymises
this taxon with and includes it in Stauroneis undata Hustedt (tx 102-17).
SCANNED MJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweSrambler.
397
145-5 Stauroneis thienemannii forma simplex Hustedt Plate 595/43-44
Op 145, P 470, f 25-
Holotype:
Na2/l6. Pulvermaar. 7 tn. b.
Marked specimen named "Stauroneis undata f. simplex Hust." on the label.
Finder: 346.4-7.
N.B. In op 157, p 260, Hustedt includes this taxon in Stauroneis
borrichii forma subcapitata J.B. Petersen.
145-6 Navicula cocconeiformis forma elliptica Hustedt Plate 595/38-39
0p -45, P 470 (no illustration).
Holotype:
Ma3/39- Weinfelder Maar. Litorella-Schlamm. 20-4-43- b-
Marked specimen named on the label.
Finder: 526-5-
N.B. In op 170, p 133, Hustedt does not mention again this taxon along
with the species. There he writes that it is impossible to separate formae
or varieties from the species and that the small elliptical forms grade
into the larger rhombic-elliptical ones. Evidently Hustedt wanted to
include the taxon under discussion in the species without really mentioning
or expressly and formally synonymizing it.
145-7 Navicula exilissima var. dubia Hustedt Plate 595/45-49
Op 145, p 471, f 28-29-
Of the two slides with marked specimens, all named on corresponding index
sheets, the following may be the lectotype:
N13/97. Pulvermaar. 76 m.
Finder: 342.8 (this specimen hardly belongs here); 501.1 (i-type f 29).
Paralectotype:
N13/98. Pulvermaar. 75 m.
Finder: 498-5 (i-type f 28).
145-8 Navicula rhynchocephala var, constricta Hustedt Plate, 596/1-2
Op 145, P 472, f 58-
Holotype:
Nll/58. Weinfelder Maar. Litorella-Schlamm. 20-4-43- b.
Marked specimen named on the label.
Finder: 551-3-
145_9 Navicula seminulum var. radiosa Hustedt Plate 595/33-37
Op 145, P 473, f 36-37-
Holotype:

398
W4/98. Immerather Maar. Grund. 28.8.42.
Marked specimens named on the label.
Finder: 320.8; 375*8; 495-8.
145-10 Nitzschia impressa Hustedt Plate 597/1-2
Op 145, P 479, f 65-66.
Holotype:
W4/99- Schalkenmehrener Maar. Potamogeton + Ceratophyllum.
Marked specimen named on the label.
Finder: 404.4-5.
N.B. The striae were not resolved by Hustedt. In our micrographs we
were able to count 40-42 striae in 10 urn.
145-H Nitzschia pumila Hustedt Plate 596/3-5
Op 145, p 480, f 67-69.
Holotype:
W4/98. Immerather Maar. Grund. 28.8.42.
Marked specimens named on the label.
Finder: 343-5-8; 464-4-7-
145-12 Nitzschia pura Hustedt Plate 596/8-16
Op 145, p 480, f 70-75.
Holotype:
W4/100. Pulvermaar. Scirpus. 26.3-43-
The taxon is not marked, very frequent, named on the label.
Further slide:
Na2/l7- Weinfelder Maar. 52 m. a.
Marked specimen named on index sheet.
Finder: 224.1.
N.B. The transapical striae were not discernible to Hustedt. We counted
aboii-^ 4 2 —in 10 -jum-i-n cur micrographs <
145-13 Nitzs'chia rectissima Hustedt Plate 597/3-4
Op 145, p 481, f 64.
Holotype:
W4/°7- Weinfelder Maar. Scirpus.
Marked specimen named on the label.
Finder: 559-5-6.
145-14 Nitzschia subromana Hustedt Plate 596/6-7
Cp 145, p 482, f 76.
Holotype:
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
399
W4/96. Ulmener Maar. Litoral. 5.4.43- b.
Marked specimen named on the label.
Finder: 401.1-4-
Op. 146. Die Diatomeenflora von Oberohe in der Liineburger Heide. Abh.
Naturw. Ver. Bremen 33, 431-455, 1954-
146-1 Achnanthes diluviana Hustedt Plate 597/8-13
Op 146, p 451, f 11-12.
Of the three slides with one marked specimen each, all named on the labels,
I select the probable i-type as lectotype:
Ma3/l2. Oberohe. 35-
Finder: 458-3-
Paralectotypes:
Ma3/9- Oberohe. 48. Ma3/l0. Oberohe. 20.
Finder: 616.3-6. Finder: 494-8.
146-2 Achnanthes woldstedtii Hustedt Plate 597/5-7
Op 146, p 453, f 7-10.
Holotype:
Ma3/13- Oberohe. 30.
Marked specimen named on the label.
Finder: 462.2-5 (i-type f 9-10).
146-3 Navicula oberohensis Hustedt Plate 597/14-16
Op 146, p 454, f 17-
Holotype:
N14/33- Oberohe. 66.
Marked specimen aameu on the label.
Finder: 588.1.
Op. 147. Neue und wenig bekannte Diatomeen. VI. Ber. Deutsch. Bot. Ges.
67, 269-280, 1954-
147-1 Frustulia similis Hustedt Plate 598/1-3
Op 147, p 271, f 2.
Holotype:
Nc/54- Sgei Sangatta. Borneo. 1.
Marked specimens named on the label.
Finder: 375-2-5; 379-4-7 (i-type f 2); 621.5-8.

400
147-2 Navicula apposita Hustedt Plate 597/17-18
Op 147, p 272, f 16.
Holotype:
338/27. Mangrove-Schlick bei El Triunfo. El Salvador. 146.
Marked specimens named on the label.
Finder: 309-3; 432.8; 581.1; 613-3 (i-type f 16).
N.B. In op 171, p 310, f 1429j Hustedt synonymizes this taxon with
and includes it in Navicula seta Cleve.
147-3 Navicula fauta Hustedt Plate 598/7-11
Op 147, p 273, f 17-
Holotype:
338/1. Los Blancos. Mangrove. 7-a. El Salvador.
Marked specimens named on the label.
Finder: 313-6-9; 317.1-2; 370.6; 487*9; 558.9 (i-type f 17).
147-4 Navicula subfortis Hustedt Plate 598/12-17
Op 147, p 276, f 18-20.
Holotype:
N8/15. Firth of Tay. Budden Sand.
Marked specimens named on the label.
Finder: 530.9 (i-type f 18); 585-9 (i-type f 20); 586.2 (i-type f 19);
645.4-7.
147-5 Navicula accedens Hustedt Plate 598/4-6
Op 147, p 276, f 22-24.
Holotype:
Nl/7. Cresswell.
Marked specimens named on the label.
Finder: 468-7 (i-type f 23, position too oblique for photography);
501.6 (i-type f 22).
147-6 Navicula pseudopima Hustedt Plate 599/1-2
Op 147, P 277/278, f 8.
Holotype:
N6/17. Grip, Norwegen. 2.
Marked specimen named on the label.
Finder: 342.6-9.
There is another slide bearing the species name:
N2/22. Grip, Norwegen. 1.
However, there is no marked specimen fitting Hustedt's description.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
401
147-7 Navicula pseudopima forma lanceolata Hustedt Plate 599/3
Op 147, p 278, f 9.
Holotype:
NIO/ll. Neapel. 60 m.
Marked specimen named on the label.
Finder: 316.8-9.
147-8 Navicula buderi Hustedt Plate 599/4-6
Op 147, p 279, f 11-15-
Holotype:
NlO/10. Jialle/Saale. 1.
The slide is labelled with the taxon's name, no specimen is marked in this
pure mass culture.
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 73, 1985) include this
taxon as synonym in Navicula halophila (Grunow) Cleve. Although there are
many teratologies etc. in the type sample, and although the variability
of the taxon is considerable, I have difficulties in finding an entrance
into the range of variability of Nav. halophila and therefore doubt that
this decision is tenable.
Op. 148- Marine littoral diatoms from Beaufort, North Carolina. Bull. Duke
Univ. Marine Station 6, 1-67, 1955*
148-1 Melosira hummii Hustedt Plate 600/1
Op 148, p 5, t 1/3-5, 4/1-2.
Holotype:
Nll/22. Beaufort, N.C., U.S.A. Hafen. a. 20.
Marked specimen named on the label.
Finder: 441-3-5-
148-2 Cosmiodiscus beaufortianus Hustedt Plate 600/2-4
Op 148, p 7, t 2/1-2.
Holotype:
Ztl/85. Beaufort, N.C., U.S.A. Strand. Oberflache. 7-
Marked specimen named "Cosmiodiscus" on index sheet.
Finder: 610.8.
N.B. The new combination introduced by VanLandingham (Catalogue 3,
p 1088, 1969), Coscinodiscus beaufortianus VanLandingham, is not justified.
The transfer to the genus Actinocyclus by M.J. Sullivan (Phycologia 22,
277-284, 1983) appears to be more logical. A pseudonodule cannot be
detected in the holotype, however, partly because the valve of the
holotype (the only specimen in the material) is lying with the inside facing
the observer. In addition, the specimen appears to be filled with debris

402
and is partly also corroded and therefore difficult to photograph. To this
difficulty the vault of the valve is added.
148-3 Actinoptychus taeniatus Hustedt Plate 60i/l-3
Op 148, p 7, t 1/1-2.
Holotype:
Nil/24- Beaufort, N.C., U.S.A. Hafen. a. 22.
Marked specimen named on index sheet.
Finder: 368.5 (i-type).
Isotypes:
I14./4. Beaufort, N.C., U.S.A. Hafen. a. 7.
Marked"o^ecimens named on the label.
Finder: 338.9; 383-3-6.
Nll/22. Beaufort, N.C., U.S.A. Hafen, a. 20.
Marked specimen named on index sheet.
Finder: 320.5-6.
Nil/23- Beaufort, N.C., U.S.A. Hafen. a. 21.
Marked specimen named on index sheet.
Finder: 225-2.
Paratype:
Ztl/79. Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Marked specimen named on index sheet.
Finder: 554-2-5-
148-4 Anaulus americanus Hustedt Plate 602/1-6
Op 148, p 9, t 4/23-24.
The cited specimens are all marked, named "Anaulus" on index sheets. The
illustrations are from different slides, therefore the following is here
selected as lectotype:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29-
Finder: 372.7-8 (i-type f 24).
Isolectotype:
7.tl/95..-Beaufort, N.C., U.S.A. Hafen. b. 27-
Finder: 376.6-9; 464-7-
Paralectotype:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 673-3-6 (i-type f 23).
148-5 Eunotograinnia rostratum Hustedt Plate 602/7-9
Op 148, p 10, t 4/18-22.
As lectotype is here chosen:
Ztl/80. Beaufort, N.C., U.S.A. Hafen. 2.
Marked specimen named "Eunotogr." on index sheet.
Finder: 395-2 (i-type f 22).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
403
Isolectotype:
Zt2/l. Beaufort, N.C., U.S.A. Hafen. 30.
Marked specimen named "Eunotogr." on index sheet.
Finder: 226.9-
Paralectotypes:
Hb/35- Beaufort, N.C., PI. 17-6.46. 37-
Marked girdle view named on the label.
Finder: 561.3-
Ztl/85- Beaufort, N.C., U.S.A. Strand-Oberflache. 7.
Marked girdle view named on index sheet.
Finder: 407-5 (i-type f 18).
148-6 Plagiogramma rhombicum Hustedt Plate 602/10-13
Op 148, p 11, t 4/25-27.
As lectotype is here designated:
Ztl/97- Beaufort, N.C., U.S.A. Hafen. b. 26.
Marked specimen named "Plagiogr." on index sheet.
Finder: 558-4-7 (i-type f 26).
Isolectotype:
Ztl/96. Beaufort, N.C., U.S.A. Hafen. b. 25.
Marked specimen named "Plagiogr." on index sheet.
Finder: 582.5 (i-type f 25).
Paralectotype:
Zti/83. Beaufort, N.C., U.S.A. Strand-Oberflache. 5.
Marked specimen named "Plagiogr." on index sheet.
Finder: 439-4-7-
148-7 Dimerogramma rostratum Hustedt Plate 602/l6-l7
Op 148, p 12, t 4/37-38.
We have only found one slide with a marked specimen that can be affiliated
with this species which is therefore the holotype:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29-
Marked specimen named "Dimerogr." on index sheet.
Finder: 317-3 (i-type f 37)-
148-8 Dimerogramma acutura Hustedt Plate 602/14-15
Op 148, p 12, t 4/42-43.
Holotype:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Marked specimen named "Dimerogr." on index sheet.
Finder: 283-8 (i-type f 42-43).
148-9 Dimerogramma hyalinum Hustedt Plate 603/1-7
Op 148, p 12, t 4/39-41-

404
Holotype:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29.
Marked specimens named "Dimerogr." on index sheet.
Finder: 472-3; 547-2.
The above specimens are not in very favourable positions for photography.
Therefore three further - unmarked - specimens of this rather rare taxon
were photographed from the following slide:
Nll/25- Beaufort, N.C., U.S.A. Hafen. c. 35-
Finder positions of these unmarked specimens: 193-6; 222.3; 462.2.
N.B. No striation or structures whatsoever could be made out on the
varve face or near the margins, there is also no indication of these by
any change in optical reaction.
148-10 Trachysphenia australis var. rostellata Hustedt Plate 603/8-9
Op 148, p 13, t 4/55.
Holotype:
Ztl/98. Beaufort, N.C., U.S.A. Hafen. b. 27-
Marked specimen named "Trachysphenia" on index sheet.
Finder: 345-3-
148-11 Rhaphoneis grossepunctata Hustedt Plate 603/10-14
Op 148, p 14, t 4/57-58.
Holotype:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29.
Marked specimens named "Rhaph." on index sheet.
Finder: 253-6 (i-type f 57-58); 494.6.
Paratype:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Marked specimen named "Rhaphon." on index sheet.
Finder: 261.4-
H8 12 Anorthoneis hyalina Hustedt Plate 604/1 8
up 148, p 15, t'2/3-4, 5/12-13.
There is quite a number of slides with marked specimens which are all named
on the corresponding index sheets. The following is here selected as
lectotype:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 259-7 (i-type t 2/4 and t 5/12-13).
Isolectotypes:
Ztl/84. Beaufort, N.C., U.S.A. Strand-Oberflache. 6.
Finder: 645-7-8.
Ztl/85. Beaufort, N.C., U.S.A. Strand-Oberflache. 7-
Finder: 408.4-7-
Ztl/87- Beaufort, N.C., U.S.A. Strand-Oberflache. 9-
Finder: 621.5-6.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*:
405
Ztl/91. Beaufort, N.C., U.S.A. Strand, b. 13-
Finder: 342.1-4 (i-type t 2/3).
Paratype:
Zt2/l. Beaufort, N.C., U.S.A. Hafen. 30.
Finder: 489-5; 497-9.
N.B. The two valves of a frustule are very close to one another, and
it is extremely difficult to separate them optically.
148-13 Anorthoneis tenuis Hustedt Plate 603/15-20
Op 148, p 15, t 2/5, 5/14-15-
Holotype:
Zt2/l. Beaufort, N.C., U.S.A. HafenVjO.
Marked specimen named on index sheet.
Finder: 134.7.
N.B. The dark spot in the middle of this valve is perhaps a thickening,
but so far I have failed to make out a raphe. Hustedt's f 15 is based on
the assumption that the mentioned dark spot is the central nodule of a
raphe system. We cannot confirm this, the entire object consists of one
single valve and not of a frustule.
A synonym of this taxon is tx 102-8 Cocconeis tenuis Hustedt (op 102,
p 602). See the discussion of both taxa there.
148-14 Anorthoneis hummii Hustedt Plate 605/1-9
Op 148, p 15, t 2/6 and 5/18-19.
There are three slides with marked specimens named on index sheets. Of
these the following is chosen as lectotype:
Ztl/90. Beaufort, N.C., U.S.A. Strand, b. 12.
Finder: 6l6.6-9 (i-type f 18-19; the raphe valve is only a fragment).
Isolectotype:
Ztl/92. Beaufort, N.C., U.S.A. Strand, b. 15-
Finder: 704-2-3.
Paralectotype:
Zt 1 /96. Beauf or V, N. C., UvS. A". Haf en' ~tr.- 25.
Finder: 564-4-7 (i-type f 6).
There is a further specimen on the following slide, but I have some doubt
that it belongs to An. hummii which name Hustedt gave it on the relevant
index sheet. No raphe could be found in either of the two valves.
Ztl/87- Beaufort, N.C., U.S.A. Strand-Oberflache. 9-
Finder: 286-4-
148-15 Cocconeis latecostata Hustedt Plate 606/1-8
Op 148, p 16, t 5/1-3-
Holotype:

406
Ztl/92. Beaufort, N.C., U.S.A. Strand, b. 15-
Marked specimens named on index sheet.
Finder: 321.8 (i-type f 1-2); 492.1 (i-type f 3)-
N.B. The specimen at 321.8 is in a very oblique position. In addition,
the raphe valve is fragmented and can only be photographed in parts. Both
valves are very close to one another so that an optical separation is
virtually impossible and several foci and different illuminations had to
be tried to obtain the best possible result.
148-16 Cocconeis sovereignii Hustedt Plate 607/1-10
Op 148, p 16, t 5/6-7.
Holotype:
Ztl/91. Beaufort, N.C., U.S.A. Strand, b. 13-
Marked specimen named on index sheet.
Finder: 291.6 (i-type f 6-7).
Paratype:
Ztl/8l. Beaufort, N.C., U.S.A. Strand-Oberflache. 3,
Marked specimen named on index sheet.
Finder: 610.7-
148-17 Cocconeis disculoides Hustedt Plate 608/1-10
Op 148, p 17, t 5/8-11 and 7/8.
The taxon is marked and named on the index sheets of several valves. As
lectotype is here proposed:
Ztl/79. Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 232.5-8 (i-type t 5/8-9); 318.3 (i-type f 10).
Isolectotypes:
Ztl/8l. Beaufort, N.C., U.S.A. Strand-Oberflache. 3.
Finder: 704-7-
Ztl/87. Beaufort, N.C., U.S.A. Strand-Oberflache. 9-
Finder: 195-6 (a misshapen raphe valve named with interrogation mark).
Zt1/92. Beaufort, N.C., U.S.A.. Strand. b.-15.
Finder: 226.3; 285-4-
Paralectotype:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29-
Marked specimens named "Cocc." on index sheet.
Finder: 321-3; 367-5-8; 368.3 (i-type t 7/8).
148-18 Achnanthes tenuis Hustedt Plate 609/1-4
Op 148, p 17, t 5/29-31.
Holotype:
Ztl/86. Beaufort, N.C., U.S.A. Strand-Oberflache. 8.
Marked specimen named "Achn." on index sheet.
Finder: 671-4 (i-type f 29-30).
N.B. The raphe valve of the holotype has a lateral stigma in the centre
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambler.
407
which can hardly be made out except in DIC and will probably also not show
in the printed plate. This fact makes this taxon invalid because it has
to be included in Achnanthes punctifera Hustedt (see tx 148-20).
148-19 Achnanthes tenera Hustedt Plate 609/5-7
Op 148, p 17, t 5/22-25.
Holotype:
Ztl/96. Beaufort, N.C., U.S.A. Hafen. b. 25.
Marked specimen named "Achn." on index sheet.
Finder: 486.6 (i-type f 22-23).
148-20 Achnanthes punctifera Hustedt Plate'609/8-15
Op 148, p 18, t 5/26-28.
Holotype:
Ztl/85- Beaufort, N.C., U.S.A. Strand-Oberflache. 7.
Marked specimens named "Achn." on index sheet.
Finder- 288-9 (i-type f 26); 289-6 (i-type f 27-28).
Isotype:
Ztl/79. Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Marked specimens named "Achn." on index sheet with reference to the above
specimens on slide Ztl/85.
Finder: 228.1; 258.1-4-
N.B. In this taxon Achnanthes tenuis Hustedt (tx 148-18) has to be
included as synonym.
148-21 Mastogloia gracillima Hustedt Plate 610/6-8
Op 148, p 19, t 6/16.
Holotype:
W5/88b. Beaufort, N.C., U.S.A. Hafen. 32.
Marked specimen named "Mastogl." on index sheet.
Finder: 521.9-
148-22 Mastogloia beaufortiana Hustedt Plate 609/16-19
Op 148, p 19, t 6/11.
There is only one slide in the collection bearing the taxon's name on the
label, but the marked specimen is not the one illustrated. It must,
nevertheless, be considered as the holotype:
Wl/33. Beaufort, N.C., U.S.A. Hafen. a. 18.
Finder: 433-1.
148-23 Mastogloia pseudoelegans Hustedt Plate 610/1-3
Op 148, p 19, t 6/10.
Holotype:

408
Ztl/85. Beaufort, N.C, U.S.A. Strand-Oberflache. 7-
Marked specimen named "Mastogl. ignorata" on index sheet.
Finder: 350.2-3-
148-24 Mastogloia patrickae Hustedt Plate 610/4-5
Op 148, p 20, t 6/15-
Holotype:
Ztl/90. Beaufort, N.C., U.S.A. Strand, b. 12.
Marked specimen named on index sheet.
Finder: 376-7-
148-25 Diploneis vetula var. americana Hustedt Plate 610/9
Op 148, p 21, t 6/17-
Holotype:
Ztl/8l. Beaufort, N.C, U.S.A. Strand-Oberflache. 3.
Marked specimen named "Dipl. vetula var." on index sheet.
Finder: 560.5-
148-26 Stauroneis marina Hustedt Plate 6ll/l-3
Op 148, p 21, t 7/2.
Holotype:
Ztl/91. Beaufort, N.C, U.S.A. Strand, b. 13-
Marked specimen named "Stauron." on separate sheet.
Finder: 612.8-9-
148-27 Navicula oculiformis Hustedt Plate 6l1/12-19
Op 148, p 22, t 8/6-7.
Holotype:
Ztl/85. Beaufort, N.C., U.S.A. Strand-Oberflache. 7-
Marked specimens named on index sheet.
Finder: 499-1 (i-type f 7); 549-8 (i-type f 6).
N.B. The photomicrographs show quite clearly that this taxon is the
same as Navicula pseudony Hustedt (tx 148-28).
148-28 Navicula pseudony Hustedt Plate 6l1/20-24
Op 148, p 23, t8/ll.
Holotype:
Ztl/79. Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Marked specimen. On the accompanying index sheet this frustule is named
"Nav. angustelyrata" by Hustedt. He evidently abandoned this epithet later
in order to indicate the taxonomic affinity.
Finder: 518.7-
N.B. The micrographs of this and the preceeding taxon show very well
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaql
409
that both are conspecific. I propose therefore that tx 148-28 Nav. pseudony
Hustedt be rejected"in favour of tx 148-27 Nav. oculiformis Hustedt.
148-29 Navicula hummii Hustedt Plate 611/4-11
Op 148, p 23, t 8/8-10, 24-
The taxon is marked on five slides, named on index sheets, with the
exception of the last-mentioned, where the name is in the label. As
lectotype is chosen:
Ztl/83. Beaufort, N.C., U.S.A. Strand-Oberflache. 5.
Finder: 198.7 (i-type f 9)j 224.8; 309-1-4 (i-type f 10).
Isolectotypes:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 254-6 (i-type f 8); 318.4-7; 336-7-
Ztl/82. Beaufort, N.C., U.S.A. Strand-Oberflache. 4.
Finder: 501.1.
Paralectotypes:
Ztl/98. Beaufort, N.C., U.S.A. Hafen. b. 27.
Finder: 258.4 (i-type f 24).
Nll/21. Beaufort, N.C. PI. i7.lO.46. 40.
Finder: 552.1.
148-30 Navicula litoricola Hustedt Plate 612/1-4
Op 148, p 23, t 8/13-14-
The two illustrated specimens are on two slides, both marked and named
on index sheets. As lectotype is taken:
Ztl/100. Beaufort, N.C, U.S.A. Hafen. c. 29.
Finder: 280.1 (i-type f 13).
Isolectotype:
Zt2/l. Beaufort, N.C, U.S.A. Hafen. 30.
Finder: 164-8 (i-type f 14).
1/18-31 Navirij"!?. approximate forma elongata Hustedt Plate 612/5-6
Op 148, p 24, t 9/20.
Holotype:
Ztl/84. Beaufort, N.C, U.S.A. Strand-Oberf lache. 6.
Marked specimen named "Nav. approximata var." on index sheet.
Finder: 555.1-2.
N.B. In op 172, p 415, f 1490, Hustedt includes this taxon in the
species, Navicula approximata Greville.
148-32 Navicula sulcifera Hustedt Plate 613/1-5
op 148, p 24, t 8/1.
There are several slides with marked specimens, all named on index sheets

410
excepting the two last-named ones which have the name on their labels.
Holotype:
Ztl/86. Beaufort, N.C., U.S.A. Strand-Oberflache. 8.
Finder: 257-7-8 (i-type f l).
Isotypes:
Ztl/89. Beaufort, N.C, U.S.A. Strand, b. 11.
Finder: 590.4-5*
Ztl/90. Beaufort, N.C, U.S.A. Strand, b. 12.
Finder: 668.1.
Zt3/l'0. Beauforty N.C., U.S.A. Strand, a.
Finder: 466.9.
Paratypes:
Zt2/l. Beaufort, N.C., U.S.A. Hafen. 30.
Finder: 643-9-
Nll/22. Beaufort, N.C., U.S.A. Hafen. a. 20.
Finder: 652.4-7-
Nll/23- Beaufort, N.C., U.S.A. Hafen. a. 21.
Finder: 249-2-5-
148-33 Navicula sovereignae Hustedt Plate 614/1-10
Op 148, p 25, t 8/18-20.
There are six slides with marked specimens, all named on index sheets.
As lectotype is determined:
Ztl/79- Beaufort, N.C, U.S.A. Strand-Oberflache. 1.
Finder: 353-3 (i-type f 18).
Isolectotypes:
Ztl/8l. Beaufort, N.C., U.S.A. Strand-Oberflache. 3-
Finder: 564.6.
Ztl/91. Beaufort, N.C., U.S.A. Strand, b. 13.
Finder: 196.4-5 (i-type f 19).
Paralectotypes:
Zrc±/80. Beauf ort, N .~C.,~ U.S.A. Haf en. 2.
Finder: 283-3; 555-6; 588.4.
Ztl/99- Beaufort, N.C., U.S.A. Hafen. h. 28.
Finder: 193-2-5 (i-type f 20).
Ja/57- Beaufort, N.C. PI. 17.10-46. 39-
Finder: 444-5-
N.B. Note that not only the polar but also the central raphe fissures
are bent to opposite directions, a fact not mentioned by Hustedt.
148-34 Navicula punctigera Hustedt Plate 612/7-11
Op 148, p 26, t 7/4-
Holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
411
Ztl/96. Beaufort, N.C, U.S.A. Hafen. b. 25.
Marked specimen named on index sheet.
Finder: 434-6 (i-type).
Paratype:
Ztl/88. Beaufort, N.C, U.S.A. Strand-Oberf lache. 10.
Marked specimen named on index sheet.
Finder: 560.1-2.
148-35 Navicula patrickae Hustedt Plate 615/l-H
Op 148, p 26, t 8/15-16.
There are in all six slides with marked specimens, all named on relevant
index sheets and partly also on the labels. As lectotype is here proposed:
Ztl/100. Beaufort, N.C, U.S.A. Hafen. c. 29.
Finder: 249-8 (i-type f 15); 338-9; 380.6 (i-type f 16?).
Isolectotypes:
Zt2/l. Beaufort, N.C, U.S.A. Hafen. 30.
Finder: 559-5-6-
Wl/34- Beaufort, N.C, U.S.A. Hafen. c. 36.
Finder: 520.1.
Paralectotypes:
Ztl/79- Beaufort, N.C, U.S.A. Strand-Oberf lache. 1.
Finder: 218.5-8.
Ja/57- Beaufort, N.C PI. I7.IO.46. 39.
Finder: 590.3.
Nll/20. Beaufort, N.C PI. 17-10.46.
Finder: 472.8.
N.B. It is improbable that the specimen on the last-named slide can
be connected with the taxon in question, the raphe construction,
particularly at the poles, is fundamentally different. The structure of the
striae also differs from that of the other specimens.
-t48-36 Navicula curiosa Hustedt ' Plate 615/12-17
Op 148, p 26, t 7/9-10.
Holotype:
Ztl/99- Beaufort, N.C, U.S.A. Hafen. b. 28.
Marked specimen named on index sheet.
Finder: 398-8-9-
N.B. This is, in reality, a Cocconeis species of the C. dirupta Greg,
group. The holotype consists of an aggregate of three valves of which the
two lying towards the observer are extremely difficult to separate
optically with the microscope. Starting from "above", i.e. counting from the
cover slip towards the slide, there are (1) a raphe valve, (2) a rapheless
valve^ and (3) another raphe valve. Valves 1 and 2 are evidently sister
valves of the same cell division. Valve 3 represents one of the parent
valves of which the rapheless valve is missing. This finding necessitates
the transfer of this taxon to the genus Cocconeis. The name Cocconeis
curiosa is, however, already occupied by Hustedt (see tx 159-6) so that

412
a new name must also he introduced:
Cocconeis fraudulens Simonsen, nov. comb., nov. nomen.
Synonym: Navicula curiosa Hustedt, op 148, p 26, t 7/9-10, 1955.
148-37 Navicula bastowii Hustedt Plate 616/I-8
Op 148, p 22, t 7/22-23.
There are five slides with marked specimens, named on index sheets of the
first three slides and on the labels of the two last ones- As lectotype
is designated:
Ztl/89. Beaufort, N.C., U.S.A. Strand, b. 11.
Finder: 309.6 (i-type f 22).
Isolectotype:
Ztl/87. Beaufort, N.C., U.S.A. Strand-Oberflache. 9.
Finder: 198.9 (i-type f 23).
Paralectotypes:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29-
Finder: 6l8.8.
NlO/38. Beaufort, N.C., U.S.A. Hafen.
Finder: 400.6.
Nll/24- Beaufort, N.C., U.S.A. Hafen. a. 22.
Finder: 251-3-
148-38 Navicula subrostellata Hustedt Plate 617/1-2
op 148, p 27, t 7/24.
Holotype:
Ztl/85. Beaufort, N.C., U.S.A. Strand-Oberflache. 7-
Marked specimen named on index sheet.
Finder: 282.2-5.
148-39 Navicula insequens Hustedt Plate 616/9-11
Op 148, p 27, t 9/19- v
Holotype:
Ztl/100- Beaufort, N.cJ, U.S.A. Hafen. c. 29-
Marked specimen named on index sheet.
Finder: 465.4.
148-40 Navicula agnita Hustedt Plate 6lS/l-3
Op 148, p 27, t 9/13-16.
Of the two slides with marked specimens named on index sheets I select
as lectotype:
Ztl/97- Beaufort, N.C., U.S.A. Hafen. b. 26.
Finder: 531-4-7 (i-type f 16).
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
413
Paralectotype:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29.
Finder: 196.6 (i-type f 14).
148-41 Navicula abunda Hustedt Plate 617/6-13
Op 148, p 27, t 9/10-12.
Hustedt's three illustrations were made from specimens on three different
slides. All are marked and named on index sheets. As lectotype I select:
Ztl/94. Beaufort, N.C., U.S.A. Hafen. b. 23.
Finder: 551-7 (i-type f 10).
Isolectotype:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29.
Finder: 46O.3-6 (i-type f 12).
Paralectotype:
Ztl/85. Beaufort, N.C., U.S.A. Strand-Oberflache. 7-
Finder: 382.2 (i-type f 11).
148-42 Navicula longa var. irregularis Hustedt Plate 618/4-6
Op 148, p 28, t 9/1.
Holotype:
Ztl/89. Beaufort, N.C., U.S.A. Strand, b. 11.
Marked specimen named on index sheet.
Finder: 437.2-5-
148-43 Navicula apta Hustedt Plate 617/3-5
Op 148, p 28, t 9/17-18.
Holotype:
Zt2/l. Beaufort, N.C., U.S.A. Hafen. 30.
Marked specimen named on index sheet. Both drawings are valves of the same
frustule.
Finder: 133-4- . ._ . ..-:.
148-44 Navicula diversistriata Hustedt Plate 619/1-16
Op 148, p 28, t 9/6-9-
There are six slides with marked specimens, named on index sheets of the
first four slides and on the labels of the last two ones. As lectotype
is proposed:
Ztl/79. Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 226.7; 289-7; 337-8; 504-1-2.
Isolectotype:
Ztl/83. Beaufort, N.C., U.S.A. Strand-Oberflache. 5-
Finder: 255-7 (i-type f 8-9).
Paralectotypes:
Ztl/80. Beaufort, N.C., U.S.A. Hafen. 2.
Finder: 532.1-4-

4H
Ztl/lOO. Beaufort, N.C, U.S.A. Hafen. c. 29-
Finder: 529-6.
NlO/38. Beaufort, N.C, U.S.A. Hafen.
Finder: 399-6-9-
Nll/25, Beaufort, N.C, U.S.A. Hafen. c. 35-
Finder: 345-7-
148-45 Navicula meniscoides Hustedt Plate 617/9-10
Op 148, p 29, t 9/4-5.
Holotype:
Ztl/lOO. Beaufort, N.C, U.S.A. Hafen. c. 29-
Marked specimen named "Nav. menisculoides" on index sheet.
Finder: 377-4-7- This is the only specimen found.
148-46 Navicula normal!s Hustedt Plate 617/14
Op 148, p 29, t 9/3.
We found only one specimen which is, perhaps, the holotype, but it is
unnamed in a circle along with a Huttoniella specimen for which the circle
was made:
Ztl/82. Beaufort, N.C, U.S.A. Strand-Oberflache. 4-
Finder: 442.9.
148-47 Navicula torifera Hustedt Plate 618/7-8
Op 148, p 29, t 7/30.
Holotype:
Ztl/93- Beaufort, N.C, U.S.A. Strand, b. 16.
Marked, unnamed specimen.
Finder: 228.4-7-
148-48 Navicula admissa Hustedt Plate 614/11-14
or 1A8._ p_ in..J-. 8/25.
Holotype:
Ztl/79. Beaufort, N.C, U.S.A. Strand-Oberflache. 1.
Marked specimen named on index sheet.
Finder: 557-1-
148-49 Navicula fenestrella Hustedt Plate 619/17-19
Op 148, p 30, t 5/32.
There are two slides containing marked specimens of this taxon, both
specimens are named on index sheets and both are of equal size. As lectotype
I select the specimen qualified in Hustedt's record as "sehr gut":
Ztl/85- Beaufort, N.C, U.S.A. Strand-Oberflache. 7-
Finder: 584-8-9.
SCANNED .dJVUED BY pAhDTA yDRI, Kiav-2007, e-mail pahutaqwetfrainbler.ru
415
Isolectotype:
Ztl/79- Beaufort, N.C, U.S.A. Strand-Oberflache. 1.
Finder: 557-1-
148-50 Navicula amphipleuroides Hustedt Plate 619/20-26
Op 148, p 30, t 5/33-34-
There are four slides with marked specimens, the first two with the name
on the label, the last two ones named on index sheets. As lectotype is
selected:
Nll/25. Beaufort, N.C, U.S.A. Hafen. c. 35.
Finder: 312.8-9 (i-type f 33)-
Isolectotype:
NlO/38.-Beaufort, N.C, U.S.A. Hafen.
Finder: 426.5.
Paralectotypes:
Ztl/79- Beaufort, N.C, U.S.A. Strand-Oberflache. 1.
Finder: 402.8.
Ztl/84. Beaufort, N.C, U.S.A. Strand-Oberflache. 6.
Finder: 439-3-
148-51 Navicula regularis Hustedt Plate 6l6/l2~l5
Op 148, p 30, t 7/17-
Holotype:
Ztl/85. Beaufort, N.C, U.S.A. Strand-Oberflache. 7-
Marked specimen named on index sheet.
Finder: 382.4-5-
148-52 Navicula pullus Hustedt Plate 6l6/l6-l8
Op 148, p 30, t 7/18.
Holotype:
Ztl/79- Beaufort, N.C, U.S.A. Strand-Oberflache. i.
Marked specimen named on index sheet.
Finder: 191-4; this is an aggregate consisting of three valves.
148-53 Navicula misella Hustedt Plate 617/18—23
Op 148, p 31, t 7/19-
Holotype:
Ztl/79- Beaufort, N.C, U.S.A. Strand-Oberflache. 1.
Marked specimen named on index sheet.
Finder:' 104-8 (i-type f 19).
Further slide:
W5/88a. Beaufort, N.C, U.S.A. Hafen.
Marked, unnamed specimen.
Finder: 196.8.
N.B. As far as the holotype on slide Ztl/79 is concerned, our micro-

4-16
graphs show that this is a member of the Naviculae lyratae. The lateral
areas are very narrow. There is little doubt that this holotype specimen
is conspecific with Navicula cryptolyra Brockmann (Abh. senckenberg,
naturf. Ges. 478, p 19, 1950),
The specimen marked on slide W5/88a is certainly conspecific with
tx 102-21 Navicula aequorea Hustedt. In op 171, p 185, under Navicula
aequorea, Hustedt had already indicated that this latter taxon might be
identical with Nav. misella. Evidently he did not compare the actual
specimens, otherwise he would have been able to observe the very different
structures of the two entities.
148-54 Navicula justa Hustedt Plate 617/15-17
Op 148, p 31, t 7/20.
Holotype:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29.
Marked specimen named on index sheet.
Finder: 258.1-2.
148-55 Navicula beaufortiana Hustedt Plate 620/7-8
Op 148, p 31, t 7/31-
Holotype:
Nll/22. Beaufort, N.C., U.S.A. Hafen. a. 20.
Marked specimen named on the label and on index sheet.
Finder: 344-3-
148-56 Navicula orthoneoides Hustedt Plate 620/1-3
Op 148, p 31, t 7/H-
Holotype:
Nll/22. Beaufort, N.C., U.S.A. Hafen. a. 20.
Marked specimen named on index sheet and on the label.
Finder: 463-3 (i-type).
Isotype: __
Ztl/94- Beaufort, NX., KsTa. Hafen. b. 23.
Marked, unnamed specimen.
Finder: 531-4-
N.B. In his description Hustedt gives as length 43 \m; his illustrated
specimen, the holotype, measures 38 pm, the isotype 33 urn. This only to
demonstrate the difficulties which Hustedt always had with his
measurements .
148-57 Caloneis minima Hustedt Plate 620/4-6
op 148, p 32, t 9/22.
Holotype:
SCANNED MJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqweirambler.
417
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29-
Marked specimen named "Calon." on index sheet.
Finder: 260.5-8.
148-58 Gyrosigma hummii Hustedt Plate 621/1-4
Op 148, p 33, t 10/2.
There are four slides with marked specimens, all are named, the first three
on index sheets, the last one on the label. Holotype:
Ztl/86. Beaufort, N.C., U.S.A. Strand-Oberflache. 8.
Finder: 493-8 (i-type).
Isotype:
Ztl/87. Beaufort, N.C., U.S.A. Strand-Oberflache. 9.
Finder: 348.2.
Paratypes:
Ztl/96. Beaufort, N.C., U.S.A. Hafen. b. 25.
Finder: 709-4-
Wl/33- Beaufort, N.C., U.S.A. Hafen. a. 18.
Finder: 372.1.
148-59 Gyrosigma beaufortianum Hustedt Plate 622/1-6
Op 148, p 34, t 10/7-8.
The two illustrated specimens are on two different slides of which I select
as lectotype:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Marked specimen named "Gyrosigma" on the index sheet.
Finder: 350-7-8 (i-type f 8).
Paralectotype:
Zt2/l.:-Beaufort, N.C., U.S.A. Hafen. 30.
Marked specimen named "Gyros." on index sheet.
Finder: 558.3 (i-type f 7)-
148^60 Gyrosigma parvulum -Hu&tedt-- -- Plate 620/9-11
Op 148, p 34, t 10/6.
Holotype:
W3/69- Beaufort, N.C., U.S.A. Hafen. a. 19-
Marked specimen named "Gyrosigma" on the label.
Finder: 410.9-
148-61 Gyrosigma subangustum Hustedt Plate 623/4-6
Op 148, p 35, t 10/10.
Holotype:
Ztl/98. Beaufort, N.C., U.S.A. Hafen. b. 27-
Marked specimen named "Gyros." on index sheet.
Finder: 383-7-

418
148-62 Pleurosigma gracile Hustedt Plate 624/1-2
Op 148, p 35, t 10/11.
Holotype:
Ztl/85- Beaufort, N.C., U.S.A. Strand-Oberflache. 7.
Marked specimen named "Pleuros." on index sheet.
Finder: 549-7-
148-63 Pleurosigma rostratum Hustedt Plate 623/1-3
Op 148, p 35, t 12/4.
Holotype:
Ztl/88. Beaufort, N.C., U.S.A. Strand-Oberflache. 10.
Marked specimen named "Pleurosigma" on index sheet.
Finder: 582.9.
148-64 Pleurosigma dlstinguendura Hustedt Plate 624/3-6
Op 148-, p 36, t 11/3-5-
Of the three illustrated specimens two could be found> on two slides.
As lectotype is chosen:
Ztl/93. Beaufort, N.C., U.S.A. Strand, b. 16.
Marked specimen named "Pleuros." on index sheet.
Finder: 248.6 (i-type f 3).
Paralectotype:
W5/88b. Beaufort, N.C., U.S.A. Hafen. 32.
Marked specimen named "Pleuros." on index sheet.
Finder: 260.2 (i-type f 4).
148-65 Amphiprora similis Hustedt Plate 625/I-3
Op 148, p 37, t 13/2.
Holotype:
Ztl/85. Beaufort, N.C., U.S.A. Strand-Oberflache. 7-
Marked specimen namea on index sheet.
Finder: 381.5-6.
148-66 Amphora proteoides Hustedt Plate 625/4-6
Op 148, p 37, t 13/9-11-
We found only one - specimen that can be combined with this taxon and must
therefore, for the time being, considered as the holotype:
Ztl/86. Beaufort, N.C., U.S.A. Strand-Oberflache. 8.
Marked specimen named "Amphora" on index sheet.
Finder: 373-9 (i-type f 9).
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqweJ'rambler.
419
148-67 Amphora beaufortiana Hustedt Plate 626/1-6
Op 148, p 38, t 14/1-6.
Marked specimens were found on four slides, on the one cited first named
on the label, the others on corresponding index sheets. As lectotype is
here determined:
Ul/51. Beaufort, N.C., U.S.A. Strand, b. 14.
Finder: 472.2 (i-type f l).
Isolectotype:
Ztl/79. Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 193-2-3 (i-type f 2).
Paralectotypes:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29.
Finder: 649-7 (i-type f 5-6).
Wl/34. Beaufort, N.C., U.S.A. Hafen. c. 36.
Finder: 403-4 (this specimen is named with interrogation mark).
148-68 Amphora subcuneata Hustedt Plate 623/7-8
Op 148, p 39, t 14/17-18.
Holotype:
Ztl/88. Beaufort, N.C., U.S.A. Strand-Oberflache. 10.
Marked specimen named "Amphora" on index sheet.
Finder: 3H.1-4-
148-69 Amphora tenuissima Hustedt Plate 624/9-11
Op 148, p 39, t 14/16.
There is only one specimen in the collection that we can affiliate with
this taxon:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
"Marked" specimen, but the circle was evidently intended to mark Navicula
misella Hustedt (tx 148-53).
Finder: 104-8.
148-70 Amphora amoena Hustedt Plate 624/7-8
Op 148, p 39, t 14/11-12.
Holotype:
Zt1/100. Beaufort, N.C., U.S.A. Hafen. c. 29.
Marked specimen named "Amphora" on index sheet.
Finder: 351.8.
148-71 Amphora subangularis Hustedt Plate 628/1-2
Op 148, p 39, t 13/16-17.
Holotype:

420
Ztl/93- Beaufort, N.C., U.S.A. Strand, b. 16.
Marked specimen named "Amphora" on index sheet.
Finder: 425-8.
148-72 Amphora elegantula Hustedt Plate 627/7-9
Op 148, p 41, t 14/7-
Holotype:
Ztl/85. Beaufort, N.C., U.S.A. Strand-Oberflache. 7-
Marked specimen named "Amphora" on index sheet.
Finder: 338-1-2.
148-73 Amphora sublaevis Hustedt Plates 626/7-10, 627/1-4
Op 148, p 41, t 13/3, 12-15.
Three marked specimens were found on three slides, all named "Amphora"
on index sheets. As lectotype is proposed:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 252.1 (i-type f 12-13).
Isolectotypes:
Ztl/8l. Beaufort, N.C., U.S.A. Strand-Oberflache. 3.
Finder: 232.3-
Ztl/85. Beaufort, N.C., U.S.A. Strand-Oberflache. 7.
Finder: 347.7-
N.B. Hustedt's f 14 is incorrect, the striae are rather short and are
located along the dorsal margin, leaving between themselves and the raphe
a comparatively large hyaline area void of any structure.
148-74 Amphora bella Hustedt Plate 627/5-6
Op 148, p 42, t 13/8.
Three marked specimens are on three slides, all named "Amphora" on the
corresponding index sheets. As lectotype is chosen:
Ztl/83. Beaufort, N.C., U.S.A. Strand-Oberflache,-5-
Finder:. 6.10_2-3 (i-type f 8). - - -
Isolectotypes:
Ztl/84. Beaufort, N.C., U.S.A. Strand-Oberflache. 6.
Finder: 408.2-3-
Ztl/88. Beaufort, N.C., U.S.A. Strand-Oberflache. 10.
Finder: 438-9-
148-75 Amphora minima Hustedt Plate 621/5-9
Op 148, p 42, t 9/30.
Holotype:
Ztl/79. Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Marked, unnamed specimen in a circle with a Nitsschia spec.
Finder: 309-5-
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
421
In the course of the work for this book further specimens of this taxon
were encountered which are important for the judgemment of the variability
range of this species, particularly the size. The first specimen was found
in a circle marking Navicula cluthensoides Hustedt (tx 175-13):
N14/99- Galapagos-Inseln. 5-
The specimen is not named.
Finder: 402.2-5*.
A further specimen, marked and named "Amphora" on the label and the index
sheet, is on slide:
N14/15- Detroit de Foveaux. Neuseeland. 3-
Finder: 430.2.
148-76 Nitzschia adducta Hustedt Plate 628/3-4
Op 148, p 43, t 15/21-22.
We found only one specimen of this taxon; this is also named on the
accompanying index sheet. Holotype:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 549-8-9 (i-type f 22).
148-77 Nitzschia silicula Hustedt Plate 628/5-10
Op 148, p 44, t 16/19-20.
In Hustedt's index sheets this taxon is only named "Ni. 17" which applies
to the three marked specimens below of which I designate as lectotype:
Ztl/85- Beaufort, N.C., U.S.A. Strand-Oberflache. 7-
Finder: 472-7-8 (i-type f 20).
Isolectotype:
Ztl/79. Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 255-8.
Paralectotype:
Zt2/l. Beaufort, N.C., U.S.A. Hafen. 30.
Finder: 497-2-3 (i-type f 19).
H8^78 Nitzschia thermaloides Hustedt Plate 628/11-14
♦ Op 148, p 44, t 15/13-15.
There is only one specimen which can be combined with certainty with
Hustedt1s desriptions and drawings and which is therefore declared as
lectotype:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Marked specimen named "Nitzschia" on index sheet.
Finder: 189-7 (i-type f 13).
Another marked specimen bears the taxon's name on the accompanying index
sheet, to which Hustedt added an interrogation mark:
Nll/23. Beaufort, N.C., U.S.A. Hafen. a. 21.
Finder: 376.1-2.
There are two further slides with marked specimens named "Nitzschia" on
the index sheets which may possibly be combined with the taxon in question:

422
Ztl/8l. Beaufort, N.C, U.S.A. Strand-Oberflache. 3-
Finder: 490.1.
Ztl/95- Beaufort, N.C, U.S.A. Hafen. b. 24-
Finder: 438.8.
148-79 Nitzschia pulchra Hustedt Plate 629/1-5-
Op 148, p 44, t 16/4-5.
The specimens illustrated by Hustedt are marked and named "Nitzschia" or
"Ni." on the index sheet (the first-named) or on the label (the second).
Of these I designate as lectotype:
Ztl/90. Beaufort, N.C., U.S.A. Strand, b. 12.
Finder: 425-3 (i-type 14).
Isolectotype:
Zt3/l0. Beaufort, N.C., U.S.A. Strand, a.
Finder: 400.3 (i-type f 5).
Paralectotype:
Wl/33- Beaufort, N.C., U.S.A. Hafen. a. 18.
Marked specimen named on the label.
Finder: 462.4-
N.B. On a separate sheet accompanying op 148 Hustedt renamed this
taxon: Nitzschia dubioides Hustedt, because of tx 131-8 N. pulchra Hustedt
1952. The sheet in the two copies in my possession and that of Hustedt
are only type-written carbon copies pasted into the front cover inside.
I do not know whether or not printed errata sheets accompanied the other
copies which were publicly sold or distributed. If this is not the case,
the introduction of the new name Nitzschia dubioides Hustedt is validated
only here.
148-80 Nitzschia hybridaeformis Hustedt Plate 630/1-7
Op 148, p 44, t 15/9-11.
This taxon is always recorded only as "Nitzschia 1", the specific epithet
appears nowhere in the index sheets. All cited specimens are marked.
Hoiotype:
Ztl/79. Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 133-3 (i-type f 10); 382.6 (i-type f 9); 433-7 (i-type f 11),;
492.3-6; 592.6.
Isotype:
Ztl/83. Beaufort, N.C., U.S.A. Strand-Oberflache. 5-
Finder: 230.6; 556.6.
Paratype:
Ztl/80. Beaufort, N.C., U.S.A. Hafen. 2.
Finder: 193-5-6; 738-3-
148-81 Nitzschia pseudohybrida Hustedt Plate 631/I-6
Op 148, p 45, t 15/3-4-
This taxon appears only as "Nitzschia 9" in Hustedt index sheets We found
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
423
only two circles on two slides. As holotype ought to be considered:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29.
Finder: 224-3-6 (two frustules, one of them is i-type f 4).
Paratype:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 555-3-
148-82 Nitzschia rhopalodioides Hustedt Plate 631/7-12
Op 148, p 45, t 15/16.
Hustedt recorded this species as "Nitzschia 12" which appears on the index
sheets of the relevant slide markings, excepting the holotype:
Wl/34- Beaufort, N.C, U.S-A. Hafen. c. 36.
Marked specimen named on the label.
Finder: 678.9 (i-type).
Isbtypes:
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29-
Finder: 193-5-8; 432-7-8.
Ztl/80. Beaufort, N.C., U.S.A. Hafen. 2.
Finder: 485-6.
Ztl/95- Beaufort, N.C, U.S.A. Hafen. b. 24-
Finder: 312.6.
W5/88b. Beaufort, N.C, U.S.A. Hafen. 32.
Finder: 320.7-8.
N.B. The transapical striae remained invisible to Hustedt. We succeeded
now in resolving the striae and counted 40-44 in 10 urn.
148-83 Nitzschia parallela Hustedt Plate 632/1-2
Op 148, p 45, t 15/12.
Holotype:
Ztl/85- Beaufort, N.C, U.S.A. Strand-Oberf lache. 7-
Marked, unnamed specimen.
Finder: 584.8-9.
148-84 Nitzschia marginata Hustedt Plate 632/3-6
Op 148, p 46, t 16/11-12.
Holotype:
Ztl/8l. Beaufort, N.C, U.S.A. Strand-Oberf lache. 3.
Marked, unnamed specimen.
Finder: 493-9-
N.B. The striae of this taxon could also not be resolved by Hustedt
and were "invisible" to him. Our micrographs revealed the structure so
that we were able to count 39 striae in 10 urn.

424
148-85 Nitzschia grossestriata Hustedt Plate 632/7-12
Op 148, p 46, t 16/8-10.
There are three slides with marked specimens, all named with the code
"Nitzschia 7" on index sheets. As lectotype is chosen:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 377-4 (i-type f 8); 622.1 (i-type f 9).
Isolectotype:
Ztl/87- Beaufort, N.C., U.S.A. Strand-Oberflache. 9.
Finder: 198.9 (i-type f 10).
Paralectotype:
Ztl/98. Beaufort, N.C., U.S.A. Hafen. b. 27.
Finder: 428.7-
148-86 Nitzschia proxima Hustedt Plate 629/6-8
op 148, p 46, t 16/13.
The only specimen that we can combine with Hustedt's taxon is marked and
recorded as "Ni. 6" on the index sheet:
Ztl/79- Beaufort, N.C., U.S.A. Strand-Oberflache. 1.
Finder: 441-5-6.
148-87 Nitzschia rhombica Hustedt Plate 632/13-15
Op 148, p 47, t 16/14-15.
We found only one marked specimen, named "Nitzschia 14" on the accompanying
index sheet, that we can connect with this taxon, particularly Hustedt's
fig 14, although with some hesitation:
Ztl/8l. Beaufort, N.C., U.S.A. Strand-Oberflache. 3.
Finder: 582.7.
148-88 Nitzschia procera Hustedt Plate 633/1-7
Op 148, p 47, t 16/6-7-
Holotype:
Ztl/86. Beaufort, N.C., U.S.A.'Strand-Oberflache. 8.
Marked specimens named "Ni. 19" on index sheet. '
Finder: 256.5; 316.3; 585-9-
148-89 Nitzschia sigmaformis Hustedt Plates 634/5-7, 635/1-8
Op 148, p 47, t 16/2-3-
This species is marked and recorded on the index sheets as "Ni. 22", in
one case with the (German) addition, "similar to sigma, with c. nodule I"
As lectotype is selected:
Zt2/l. Beaufort, N.C., U.S.A. Hafen. 30.
Finder: 164.8 (i~type f 3); 170.8; 221.2-3; 250.1.
Isolectotypes:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwei:
425
Ztl/80. Beaufort, N.C., U.S.A. Hafen. 2.
Finder: 195-8.
Ztl/100. Beaufort, N.C., U.S.A. Hafen. c. 29.
Finder: 197-5-8; 352.9 (i-type f 2?).
148-90 Nitzschia hummii Hustedt Plate 634/1-4
Op 148, p 47, t 15/6.
Holotype:
Ztl/83. Beaufort, N.C., U.S.A. Strand-Oberflache, 5.
Marked specimen named on index sheet.
Finder: 252.8-9-
Isotype:
Ul/51. Beaufort, N.C., U.S.A. Strand, b. 14.
Marked specimen named on the label.
Finder: 500.5-8.
148-91 Nitzschia brevirostris Hustedt Plate 633/8-9
Op 148, p 48, t 16/21-22.
Holotype:
Ztl/83. Beaufort, N.C., U.S.A. Strand-Oberflache. 5-
Marked specimen named "Ni." on index sheet.
Finder: 226.9 (i-type f 21-22).
N.B. The valve structure remained "invisible" to Hustedt. One of our
micrographs revealed parts of the striation, and we were thus able to count
50 striae in 10 jam.
148-92 Surirella litoralis Hustedt Plate 628/17-20
Op 148, p 48, t 16/24-25.
The two illustrated specimens are marked on two slides, named "Surirella"
or "Surir." on the index sheets. As lectotype is taken:
Ztl/86. BeSufort, N.C., U.S.A. Strand-Oberflache. 8.
Finder: 31 %2-3 (i-type f 25-);-
Paralectotype:
Ztl/94- Beaufort, N.C., U.S.A. Hafen. b. 23.
Finder: 703-5 (i-type f 24).
148-93 Surirella atomus Hustedt Plate 628/15-16
op 148, p 48, t 16/23.
Holotype:
Ztl/85. Beaufort, N.C., U.S.A. Strand-Oberflache. 7-
Marked specimen named "Surirella (sehr klein)" on index sheet.
Finder: 312.6.

426
Op. 150. Zellteilungsfolge und Variabilitat bei Diatomeen. Arch. Mikro-
biol. 21, 391-400, 1955.
150-1 Eunotia distinguenda Hustedt Plates 636/1-7, 637/1-3
Op 150, p 394, f 1-3-
The specimens illustrated on figs 1-3 are all contained in a mount with
picked specimens, named on the label, which is therefore adopted as the
holotype:
L4/60. Cachoeira do Rio Arua. Tumpel. Brasilien. S.134-
Isotypes:
14/59* Cachoeira do Rio Arua. Tumpel. Brasilien. S.134-
Another slide with picked specimens named on the label.
14/57. Cachoeira do Rio Arua. Tumpel. Brasil. S.134-
Strewn slide with marked specimen named on the label.
Finder: 521.8.
I4/58. Cachoeira do Rio Arua. Tumpel. Brasil. S.134-
Strewn slide with marked specimens named on the label.
Finder: 348-9; 410-5-8; 434-7; 465-5; 495-4; 524-8; 553-7; 579-3;
584-1-2; 588.9; 676.7.
Op. 152. Neue und wenig bekannte Diatomeen. VII. Ber. Deutsch. Bot. Ges.
68, 121-132, 1955-
152-1 Navicula inserata Hustedt Plate 638/7-8
Op 152, p 125, f 18.
Holotype:
N10/19 (old no. N919). Belawan-Mdg. Sumatra. 2.
Marked specimen named on the label.
Finder: 377-1-2.
152-2 Navicula inserata var. undulata Hustedt Plate 638/9-12
op 152, p 125, f 16-17.
Holotype:
N10/19 (old no. N919). Belawan-Mdg. Sumatra. 2.
Marked specimen named on the label.
Finder: 490.7 (i-type f 17)-
Isotype:
N10/21. Belawan-Mdg. Sumatra. 2.
Marked specimen named on the label.
Finder: 499.4-7 (i-type f 16).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei>rambler.ru
427
152-3 Navicula pseudomutica Hustedt Plate 639/8-9
Op 152, p 126, f 19.
Holotype:
N10/22 (old no. N922). Rio Mogi-guassu, trockene Zweige. Brasilien.
(Sch. 2). 1.
Marked specimen named on the label.
Finder: 409.8.
152-4 Navicula argutula Hustedt Plate 638/1-4
Op 152, p 126, f 26-27.
Holotype:
NlO/23 (old no. N923). Rio Cupari, Quelle bei Pinima. Brasil. Sioli.
Marked specimens named on the label.
Finder: 492-4 (i-type f 26); 494-1-4 (i-type f 27).
152-5 Navicula charlatii forma simplex Hustedt Plate 638/5-6
op 152, p 127, f 14.
Holotype:
N10/24 (old no. N924). Minas. Uruguay.
Marked specimen named on the label.
Finder: 615.2.
152-6 Navicula charlatii var. chilensis Hustedt Plate 638/14—16
Op 152, p 127, f 15-
Holotype:
NlO/26 (old no. N926). Ufer des Calle-Calle, Chile.
Marked specimen named on the label.
Finder: 320.8.
152-7 Navicula turkestanensis Hustedt Plate 639/1-5
Op 152, p 128, f 28-29.
Holotype:
N10/28 (old no. N928). Karatog Lake. Yarkand, b.
Marked specimens named on the label.
Finder: 102.7 (i-type f 29); 138.7-8; 163-1-4; 202.3-6; 202.4 (i-type
f 28); 202.9; 258.2; 284.3.
N.B. On the slide label Hustedt has written "Navicula turkestanensis
Hust, = N. paulseniana Pets." This latter taxon was described by J.B,
Petersen from Pamir (Dansk Bot. Ark. 6 (6), p 40, f 4. 1930). It was given
varietal rank by Zabelina et al., Diatomovye vodorosli, p 334, 1951:
Navicula lacustris var. paulseniana (J.B. Petersen) Zabelina. This latter
action appears to me very doubtful, however, because there are too great
differences between these two taxa, particularly in the central part of
the valve, e.g. in the central areas.

428
152-8 Navicula cataractarum Hustedt Plate 637/4-9
Op 152, p 128, f 9-12.
Holotype:
N10/29 (old no. N929). Los Chorros. El Salvador. 524b.
The species occurs in masses on the slide, it is unmarked, named on the
label.
There is another slide with the taxon's name on the label:
N10/30 (old no. N930). Los Chorros. El Salvador. 317.
Marked specimens.
Finder: 464-7; 585-7; 6l6.1-2.
152-9 Navicula exiguoides Hustedt Plate 638/13
Op 152, p 131, f 1.
Holotype:
400/9- Kopecs, b.
Marked, unnamed specimen.
Finder: 589-9 (i-type f 1).
152-10 Navicula antediluviana Hustedt Plate 639/6-7
Op 152, p 132, f 2-3-
Holotype:
400/9- Kopecz. b.
Marked, unnamed specimen.
Finder: 469-2-3 (a frustule, i-type f 2-3).
Op. 153- Neue und wenig bekannte Ciatomeen. 8. Abh. Naturw. Ver. Bremen.
34, 47-68, 1955-
153-1 Cymbella juriljii Hustedt Plate 640/1-2
n^ 15^ n ss f ?8
Holotype:
400/9- Kopecz. b.
Marked, unnamed specimen.
Finder: 552.7.
153-2 Cymbella formosa Hustedt Plate 640/3-7
Op 153, P 57, f 32-34-
There are three slides with marked specimens, all with the taxon's name
on the labels. As lectotype is designated:
T2/24- Pitt-River, Oregon.
Finder: 310.1; 401.4 (i-type f 32); 401.6; 405-3; 434-2-5; 521-3 (i-type
f 34); 558-4 (i-type f 33).
SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*:
429
Isolectotypes:
T2/25. Pitt-River, Oregon.
Finder: 256.9; 310.2; 370.1-4; 428.1; 428.9; 495-2-5; 615.4-7-
T2/26. Pittriver, Oregon. 298.
Finder: 281.8; 284-1-2; 318-9; 401-3; 404-5; 406.8; 431-9-
153-3 Cymbella braunii Hustedt Plate 641/1-4
0p 153, p 57, f 45-46.
Holotype:
T2/60. Lago Jurucui,, an Pflansen. Brasilien. 252.
Marked, unnamed specimens.
Finder: 313-6; 320.4 (i-type f 45); 465-6-9; 523-2-5; 553-3-6; 559-4;
592.4; 676.4.
153-4 Cymbella schubartii Hustedt Plate 642/1-4
Op 153, p 59, f 22-23.
Holotype:
316/60. Lagoa de Carrinho. Brasilien. (Sch. 30). 3-
Marked specimens named on index sheet.
Finder: 190.3-6 (2 specimens, one is i-type f 23); 190.8; 431-5-6; 524-1;
548.1-2.
153-5 Cymbella decipiens Hustedt Plate 643/5-IO
0p 153, P 59, f 53-55-
Holotype:
T2/62. Lago da Cachoeira do Arua. S.124. Brasilien.
Marked specimens named on the label.
Finder: 3U-2; 321.2-3 (i-type f 54); 465-3 (i~type f 53);
504-7 (i-type f 55).
N.B. There is only little doubt that this species is conspecific with
tx 135-39 Navicula parunculoides . Hustedt. The placement of the taxon in
the genus Cymbella appears to be better justified than in Navicula so that
the above combination should be considered as the valid one.
153-6 Cymbella angustissima Hustedt Plate 641/5-12
Op 153, P 60, f 56-58-
Holotype:
345/51a. Tasmanien. 7- Lake Cobson. c. 1.
Marked specimens named on index sheet.
Finder: 312-7; 3U-3; 315-2 (i-type f 58); 500.5; 519-3 (i-type f 56);
529.2-5.
Paratype (Isotype?):
345/43a. Tasmanien. 7- Lake Dobson. 1.
Marked specimens named on index sheet.
Finder: 615-2-3; 620.1-4-

430
153-7 Cymbella vasta Hustedt Plate 641/13-14
Op 153, p 60, f 52-
Holotype:
345/43b. Tasmanien. 7- Lake Dobson. a. 1.
Marked specimen named on index sheet.
Finder: 437-9.
153-8 Cymbella praerupta Hustedt Plate 643/3-4
Op 153, P 60, f 38.
There are three slides with marked specimens, all named on the
corresponding index sheet. Holotype:
345/44b- Tasmanien. 7* Lake Dobson. a. 3*
Finder: 369.8; 496-7; 500.1 (i-type f 38); 530.5-
Isotypes:
345/45a. Tasmanien. 7- Lake Dobson. a. 4*
Finder: 372.3-6.
345/45b. Tasmanien. 7- Lake Dobson. a. 5-
Finder: 406.2.
153-9 Cymbella cistula var. gracilis Hustedt Plates 642/5-9, 643/1-2
Op 153, p 62, f 39-40.
There are two slides with marked specimens named on index sheets, but none
has the dimensions of Hustedt's illustrations. As lectotype is therefore
selected here:
345/44b. Tasmanien. 7- Lake Dobson. a. 3«
Finder: 316.9s 318.6-9; 463-5-8 (a specimen with six stigmata).
Isolectotype:
345/45b. Tasmanien. 7* Lake Dobson. a. 5-
Finder: 314-8*.
N.B. Hufford & Collins (J. Phycol. 8, p 186, 1972) raise this taxon
to specific rank under the name Cymb. cursiformis Hufford & Collins. They
designated the specimen at 316.9 on slide 345/44b as lectotype.
153-10 Cymbella cistula var. convexa Hustedt Plate 644/1-6
Op 153, p 62, f 41-42.
Three slides contain marked specimens named on index sheets, of which the
following is selected as lectotype:
345/44b. Tasmanien. 7* Lake Dobson. a. 3-
Finder: 432-7; 488.6-9 (i-type f 42?); 650.1.
Isolectotypes:
345/43b. Tasmanien. 7- Lake Dobson. a. 1.
Finder: 56I.I.
345/44a. Tasmanien. 7- Lake Dobson. a. 2.
Finder: 374.2-5-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
431
153-11 Cymbella magna Hustedt Plate 645/1-3
Op 153, P 64, f 47-
There are four slides in the collection with marked specimens and the
taxon's name on index sheets. Among these the following comes closest to
Hustedt's illustration and is therefore taken as lectotype:
345/43b. Tasmanien. 7. Lake Dobson. a. 1.
Finder: 254.8.
Isolectotypes:
345/44a. Tasmanien. 7- Lake Dobson. a. 2.
Finder: 400.7-
345/45a. Tasmanien. 7- Lake Dobson. a. 4-
Finder: 381.5; 406.2.
345/45b. Tasmanien. 7- Lake Dobson. a. 5-
Finder: 282.1; 406.2.
153-12 Cymbella disposita Hustedt Plate 645/4-5
Op 153, p 66, f 49-
Three slides contain marked specimens named on index sheets. Holotype:
345/45b. Tasmanien. 7- Lake Dobson. a. 5-
Finder: 285-1-4 (i-type).
Isotypes:
345/44a. Tasmanien. 7- Lake Dobson. a. 2.
Finder: 378.1.
345/44b. Tasmanien. 7- Lake Dobson. a. 3-
Finder: 487-3-
153-13 Cymbella inducta Hustedt Plate 646/I-2
Op 153, P 66, f 51-
Holotype:
345/43b- Tasmanien. 7- Lake Dobson. a. 1.
Marked specimen named on index sheet.
Finder: 528.3-
153-14 Cymbella laterostrata Hustedt Plate 646/3-4
Op 153, P 66, f 48.
Holotype:
345/47- Tasmanien. 7- Lake Dobson. b. 1.
Marked, unnamed specimen.
Finder: 521-7-8 (i-type f 48).
Para- (Iso-?) -types, marked specimens named on index sheets:
345/43b- Tasmanien. 7. Lake Dobson. a. 1.
Finder: 647-4-
345/44a. Tasmanien. 7. Lake Dobson. a. 2.
Finder: 559-4-7-

432
153-15 Cymbella rugosa Hustedt Plate 646/5-8
Op 153, P 67, f 29-31-
As lectotype is here selected:
345/44b. Tasmanien. 7- Lake Dobson. a. 3-
Marked specimens named on index sheet.
Finder: 319.9 (i-type f 29); 406.4-7; 526.1.
IsolectotypeSj marked specimens named on index sheets:
345/43a« Tasmanien. 7- Lake Dobson. 1.
Finder: 315-1-4; 414-7-8; 433-7.
345/43b. Tasmanien. 7- Lake Dobson. a. 1.
Finder: 411.4-5-
345/44a. Tasmanien. 7- Lake Dobson. a. 2.
Finder: 647-7-
345/45b. Tasmanien. 7- Lake Dobson. a. 5-
Finder: 6l8.2-5.
Paratype (also an isotype?):
345/47- Tasmanien. 7- Lake Dobson. b. 1.
Marked, unnamed specimens.
Finder: 580.2; 679-3-
153-16 Cymbella tasmaniensis Hustedt Plate 644/7-8
Op 153, p 67, f 50.
The only slide with a marked (though named "Cymb." only) specimen that
can be positively stated to belong to this taxon is the following which
is therefore adopted here as the lectotype:
345/45b. Tasmanien. 7* Lake Dobson. a. 5-
Finder: 581.2-5-
A marked specimen named C. tasmaniensis with interrogation mark by Hustedt
is on the following slide:
345/44a. Tasmanien. 7- Lake Dobson. a. 2.
Finder: 372.1.
Op. 155- Diatomeen aus dem Lago de Maracaibo in Venezuela. Ergebn. deutsch.
limnol. Venezuela-Exped. 1952, 1, 93-U'O, 1956.
155-1 Thalassiosira gessneri Hustedt Plates 647/1-6, 648/I-3
Op 155, P 95, t 1/1-5-
As lectotype is here proposed:
Ad/76, Lago Maracaibo. Venezuela. St. 7-
Marked specimens named on the label.
Finder: 646.9 (i-type f 1-3); 709-1-2.
SCANNED SdJVUED BY pAMJTA yURI, Kiev-2007,e-mail pahutaqwe*:
433
Isolectotypes:
X7/10. Lago Maracaibo. Venezuela. St. 7-
Marked specimen named on the label.
Finder: 313-8-9 (i-type f 4)-
343/93a. Lago Maracaibo. Venezuela. St. 7-
Marked, unnamed specimen.
Finder: 377-1-2 (i-type f 5)-
155-2 Thalassiosira salvadoriana Hustedt Plate 648/4-7
Op 155, P 96, t 1/7-8.
As lectotype is here determined:
Ad/76. Lago Maracaibo. Venezuela. St. 7-
Marked specimen named on the label.
Finder: 462.5-6 (i-type f 8).
Isolectotype:
343/93b. Lago Maracaibo. Venezuela. St. 7-
Markedj unnamed specimen.
Finder: 487.8 (i-type f 7).
155-3 Thalassiosira simplex Hustedt Plate 649/1-3
Op 155, P 96, t 1-/6.
Holotype:
343/93a. Lago Maracaibo. Venezuela. St. 7-
Marked, unnamed specimen.
Finder: 559.2-5.
155-4 Actinocyclus distinguendus Hustedt Plate 649/4-7
Op 155, p 103, t 2/3-8.
The following lectotype is designated:
343/lOOb. Lago Maracaibo. St. 17. Potamogeton. Venezuela.
Marked specimens named on index sheet.
Finder: 191.1; 194-5; 197-7; 228.2-37 286.7-
Paralectotypes, marked, unnamed specimens:
343/93a. Lago Maracaibo. Venezuela. St. 7*
Finder: 493-7 (i-type f 7-8).
Fb/91b. Lago Maracaibo. PI. St. 5- Venezuela.
Finder: 370.2; 525-7-8.
155-5 Actinocyclus tropicus Hustedt Plate 650/1-4
Op 155, P 104, t 1/9-13.
The following is proposed as lectotype:
Ad/76. Lago Maracaibo. Venezuela. St. 7-
Marked specimen named "Actinocyclus" on the label.
Finder: 526.4-5 (i-type f 9-10).

434
Paralectotype:
343/90b- Lago Maracaibo. St. 8. 18 m. Venezuela.
Marked, unnamed specimen.
Finder: 6l2-7.
155-6 Chaetoceros similoides Hustedt Plate 651/1-4
Op 155, p 105, f 1-4-
As lectotype is chosen:
343/93b. Lago Maracaibo. Venezuela. St. 7-
Marked, unnamed specimens.
Finder: 258-7-8; 282.1; 290.2-3; 528.9; 582.5-6.
A markedj unnamed spore was found on the following slide:
343/95t>- Lago Maracaibo. Venezuela. St. 17-
Finder: 288.8 (i-type f 3).
155-7 Plagiogramma tenuissimum Hustedt Plate 650/5-10
Op 155, p 106, f 6-8.
There are two slides with marked specimens, all named on index sheets.
As lectotype is here selected:
343/95b. Lago Maracaibo. Venezuela. St. 17-
Finder: 227.6; 320.1; 346.5; 373-5-6; 641.6 (i-type f 8).
Isolectotype:
343/95a. Lago Maracaibo. Venezuela. St. 17.
Finder: 531-5-8 (i~type f 7).
155-8 Fragilaria gessneri Hustedt Plate 652/1-6
Op 155, p 107, f 13-18.
Two slides contain marked specimens of this frequent taxon, all named on
index sheets. As lectotype is here chosen:
343/95^. Lago Maracaibo. Venezuela. St. 17.
Finder: 280.9; 318.7 (i-type f 17-18).
Isolectotype:
343/96b. Lago Maracaibo. Venezuela. St. 17.
Finder: 353-4-7; 406.7-8.
N.B. The existence of the finer strial structure as depicted in f 15
of Hustedt is not confirmed by our micrographs, I was unable to resolve
the striae.
155-9 Fragilaria obtusa Hustedt Plate 652/7-11
Op 155, p 108, f 19-22.
The name of this not infrequent taxon appears only once on an index sheet
to point to a girdle view. The slide must therefore be considered as the
holotype:
343/96b. Lago Maracaibo. Venezuela. St. 17.
Finder: 371-9-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
435
155-10 Achnanthes submarina Hustedt Plate 652/12-24
Op 155, p 110, f 26-28.
Marked specimens, all named on index sheets, occur on four slides of which
the following is here taken as lectotype:
343/95^- Lago Maracaibo. Venezuela. St. 17-
Finder: 282.1; 288.8; 318.7; 346-5; 376.2 (2 specimens).
Isolectotypes:
343/95a. Lago Maracaibo. Venezuela. St. 17-
Finder: 531-5-8.
343/96a. Lago Maracaibo. Venezuela. St. 17-
Finder: 345-6; 407-1-
343/96b. Lago Maracaibo. Venezuela. St. 17.
Finder: 402.1-4; 406.1; 407.2-5; 410.2.
155-H Diploneis minima Hustedt Plate 652/25-28
op 155, p 111, f 29-30.
Two marked specimens exist. As lectotype is proposed:
W3/74. Lago Maracaibo. Venezuela. St. 7-
Marked specimen named on the label.
Finder: 292.1.
Isolectotype:
343/93a. Lago Maracaibo. Venezuela. St. 7-
This specimen is unnamed.
Finder: 468-5-6.
155-12 Stauroneis submarina Hustedt Plate 653/3-5
Op 155, p 113, f 31-32.
Marked specimens, named on index sheets, are on three slides of which the
following may serve as lectotype:
343/95b. Lago Maracaibo. Venezuela. St. 17-
Finder: 308.1-4; 431-1-4-
Isolectotypes:
343/96a. Lago Maracaibo. Venezuela. St. 17.
Finder: 6i5-9-
343/96b. Lago Maracaibo. Venezuela. St. 17.
Finder: 344.1-4.
155-13 Navicula ilopangensis Hustedt Plate 652/29-34
Op 155, p 114, f 37-
Among the four slides with marked specimens there are two with the taxon's
name on their labels, the two Venezuelan ones are unnamed. Holotype:
N10/94- Lago Ilopango. El Salvador. 156.
Finder: 436.5 (i-type f 37); 461-5; 498.6.
Paratype:

436
NlO/93- Lago Ilopango. El Salvador. 155-
Finder: 439-1.
Further slides:
Ad/76. Lago Maracaibo. Venezuela. St. 7-
Finder: 645-7-
343/93a. Lago Maracaibo. Venezuela. St. 7-
Finder: 225.3-6.
155-14 Navicula virginalis Hustedt Plate 653/6-14
Op 155, p U4, f 46.
The taxon is marked and named on four slides. As lectotype is chosen:
343/96b. Lago Maracaibo. Venezuela. St. 17*
Finder: 368.4.
Isolectotypes:
343/95^. Lago Maracaibo. Venezuela. St. 17-
Finder: 499.7-8.
343/95b- Lago Maracaibo. Venezuela. St. 17.
Finder: 227-6.
343/96a. Lago Maracaibo. Venezuela. St. 17-
Finder: 347.1-4.
155-15 Navicula venezuelensis Hustedt Plate 653/15-19
Op 155, p 115, f 33-36-
No marked or named specimen of this taxon exists. It is abundant in the
material cited in the protologue, and the following slide is selected as
lectotype:
343/70a. Lago Maracaibo. St- 17- Potamogeton. Venezuela.
155-16 Navicula tersa Hustedt Plate 653/1-2
n-p ire n.jiA -r 98 of)
Holotype:
343/65- Lago Maracaibo. St. 8. 18 m. Venezuela.
Markedj unnamed specimen.
Finder: 620.2.
155-17 Navicula zonata Hustedt Plate 654/20
Op 155; p 116, f 44-45-
We have been unable to locate any marked or unmarked specimen of this
taxon and regret that we cannot present a micrograph of any type of it
here.
fcdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe*:
437
155-18 Navicula teneroides Hustedt Plate 654/1-9
Op 155, p 117, f 42-43-
Three slides contain marked specimens, all named on index sheets. The
following may be the lectotype:
343/95b- Lago Maracaibo. Venezuela. St. 17-
Finder: 225-4; 257.1-4-
Isolectotypes:
343/96a. Lago Maracaibo. Venezuela. St. 17.
Finder: 375-9; 524-4-5 (with another taxon); 527-2.
343/96b. Lago Maracaibo. Venezuela. St. 17-
Finder: 406.7-8 (this specimen with an interrogation mark in Hustedt's
hand).
155-19 Gyrosigma procerum Hustedt Plate 654/10-11
Op 155, P 118, f 48.
Holotype:
Fb/93a. Lago Maracaibo. Venezuela. St. 7-
Marked_, unnamed specimen.
Finder: 533-4-7-
155-20 Amphora tumida Hustedt Plate 654/12-19
Op 155, p 120, f 51-54-
The taxon is marked, always named on index sheets, on three slides. Quite
often there is more than one specimen in a circle. The following shall
be the lectotype:
343/95b. Lago Maracaibo. Venezuela. St. 17-
Finder: 282.1; 341.3-6; 409-2-5-
Isolectotypes:
343/96a. Lago Maracaibo. Venezuela. St. 17-
Finder: 412.7 (several valves).
343/96b. Lago Maracaibo. Venezuela. St. 17-
Finder: 368.4-
155-21 Nitzschia pseudostagnorum Hustedt Plate 655/1-4
Op 155, P 123, f 56-
As lectotype is here determined:
W3/74. Lago Maracaibo. Venezuela. St. 7-
Marked specimen named on the label.
Finder: 385-6-9-
Isolectotype:
343/93a. Lago Maracaibo. Venezuela. St. 7-
Marked, unnamed specimen.
Finder: 253-2-5-

438
155-22 Nitzschia lancettuloides Hustedt Plate 654/21-22
Op 155, p 125, f 67.
Hoiotype:
343/94a. Lago Maracaibo. Venezuela. St. 20.
Marked, unnamed specimen.
Finder: 614-3*
155-23 Nitzschia simplex Hustedt ' Plate 655/13-18
Op 155, P 125, f 63-64-
Two slides contain marked specimens, both are with names on the labels.
Holotype:
343/70a. Lago Maracaibo. St. 17- Potamogeton. Venezuela.
Finder: 433-1-2 (2 specimens, i-types of f 63 and 64).
Isotype:
343/lOOa. Lago Maracaibo. St. 17. Potamogeton. Venezuela.
Finder: 558.7-8; 559-8-9-
These latter specimens are smaller than given in Hustedt's description.
155-24 Nitzschia submediocris Hustedt Plate 656/5-10
Op 155, P 125, f 61.
Two marked specimens, both not named, were found. As lectotype is here
taken:
W3/74- Lago Maracaibo. Venezuela. St. 7-
Finder: 292.1 (i-type?).
Isolectotype:
343/93b- Lago Maracaibo. Venezuela. St. 7*
Finder: 675-4.
N.B. Hustedt did not resolve the striation. The counts in our
micrographs resulted in about 40 striae in 10 urn.
155-25 Nitzschia angustecarinata Hustedt Plate 655/9-12
Op 155, P 126, f 62.
Holotype:
W3/74. Lago Maracaibo. Venezuela. St. 7-
Marked specimens named on the label.
Finder: 291.9 (i-type?); 406.2-5.
N.B. In his description Hustedt records 30-35 striae in 10 urn, whereas
his illustration reveals 45- We counted 38-40 in our micrographs.
155-26 Nitzschia elegans Hustedt Plate 655/5-8
Op 155, p 127, f 71-73-
The taxon is marked on two slides. The following is here -adopted as
lectotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
439
343/lOOb. Lago Maracaibo. St. 17. Potamogeton. Venezuela.
Marked specimens named on index sheet.
Finder: 260.8; 468.9 (2 specimens).
Isolectotype:
343/lOOa. Lago Maracaibo. St. 17. Potamogeton. Venezuela.
Marked specimen named on the label and on the index sheet.
Finder: 382.5.
155-27 Surirella gessneri Hustedt Plate 656/1-4
Op 155, p 130, t 3/5-6.
As lectotype is here designated:
X7/10. Lago Maracaibo. Venezuela. St. 7*
Marked specimen named on the label.
Finder: 529-4-5 (i-type f 6).
Isolectotype:
343/93b. Lago Maracaibo. Venezuela. St. 7.
Marked specimens, unnamed.
Finder: 381.2-5 (i-type f 5)i 440.6-9.
Op. 157-Die Diatomeenflora des Fluflsystems der Weser im Gebiet der Hanse-
stadt Bremen. Abh. Naturw. Ver. Bremen 34, 181-440, 1957-
157-1 Thalassiosira visurgis Hustedt Plate 657/1-9
Op 157, p 207, t 1/1-4.
Holotype:
Ad/77- Weser. 29. Moorlose Kirche. N-Ufer. 8 m.
Marked specimens named "Thalassiosira" on the label.
Finder: 279-8; 341-6; 375-5 (i-type f 1); 468.2; 521.2 (i-type f 2); 582.4.
157-2 Cyclotella nana Hustedt Plate 657/13-21
Op 157, p 212, f 1-2.
Only one circle seems to enclose this otherwise frequent taxon, no name
was found on labels or index sheets. Therefore the following lectotype
is chosen:
380/36. Bremen. Wumme. 8.
Marked, unnamed specimens, two in same circle.
Finder: 371.8.
A few more unmarked specimens are included here.
N.B. Hasle & Heimdal (Nova Hedwigia, Beih. 31, p 565, 1970)
transferred this taxon to the genus Thalassiosira, at the same time renaming
it: Thalassiosira pseudonana Hasle & Heimdal.

440
157-3 Synedra investiens forma rhomboidea Hustedt Plate 658/1-2
Op 157, P 238 (no illustration).
Holotype:
380/94. Weser. km 14* S-Ufer. 11 m. 12.
Marked, unnamed specimen.
Finder: 469.2-5.
N.B. There must be a misprint, the length of the specimen is 32 and
not 37 |im, as said in the diagnosis.
157-4 Stauroneis nana Hustedt Plate 658/12-14
Op 157, r 259; f 3-
Holotype:
Nal/76. Weserj Plankton. Moorlose Kirche. 16.
Marked specimen named on the label.
Finder: 548.6.
N.B. Hustedt could not resolve the structure; we counted about 40
striae in 10 urn in one of our micrographs.
157-5 Navicula difficillijiioides Hustedt Plate 658/3-11
Op 157, P 270, f 8-9.
Holotype:
143/65b. Kl. Wumme. 48. Bremen.
Marked specimens named on the label.
Finder: 434-4-7; 494-6-9; 525-7; 531-7-8; 557-3-6.
N.B. The striation, not resolved by Hustedt, amounts to 44-46 striae
in 10 jam, as our micrographs show.
157-6 Navicula digna Hustedt Plate 657/10-12
Op 157, p 270, f 14-15-
HVJJ-'O <. J pi. .
NJ1 /?. - Roverf p1 d j tyvmme, Hypnum.
Marked specimen named on the label.
Finder: 525-4-
157-7 Navicula fluviatilis Hustedt Plate 658/15-16
Op 157, p 274, f 16.
Holotype:
Nll/l. Borgfeld, Wumme, Hypnum.
Marked specimen named on the label.
Finder: 6l6.2-5.
N.B. Lange-Bertalot & Rumrich (Proc. 6th Diat. Symp., R.Ross (ed.),
p 141, 1981) have "no doubt" that this taxon is conspecific with Achnanthes
suchlandtii Hustedt (see tx 79-13).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
441
157-8 Navicula fossaloides Hustedt Plate 658/17-18
Op 157, p 275, f 17.
Holotype:
380/97b. Weser. 15. Moorlose Kirche, S.-Ufer, 8 m.
Marked specimen named on the label.
Finder: 617.2.
157-9 Navicula frugalis Hustedt Plate. 658/19-26
Op 157, p 275, f 21-25.
We found two slides with specimens marked by Hustedt, in both cases
unnamed. These have clearly preference to the specimen selected and marked
earlier by Simonsen which was illustrated by Lange-Bertalot & Rumrich
(see below). The lectotype proposed now:
380/97b. Weser. 15. Moorlose Kirche, S-Ufer, 8 m.
Finder: 647-5; 649-1-4-
Paralectotype:
380/95b. Weser. 13. Mittelsburen. 9 m-
Finder: 615-4; 647.1.
The old, now invalid, lectotype marked and named by Simonsen:
385/91a. Ochtum bei Ochtum. 17. NW-Deutschland.
Finder: 617.7.
N.B. Lange-Bertalot & Rumrich (Proc. 6th Diat. Symp., R.Ross (ed.),
p 136, 198l) synonymiae this taxon with Navicula subminuscula Manguin.
157-10 Navicula peratomus Hustedt Plate 658/3O-40
Op 157, p 277, f 26.
Three slides have one marked specimen each, named on the labels. Of these
the following is selected as lectotype:
143/45b. Kl. Wumme. Bremen. 31.
Finder: 588-7-
Further slides:
143/32b. Kl. Wumme. Bremen. 22.
Finder: 648-1-
143/9. Hamme bei Ritterhude, an Pflanzen. 4-6-54-
Finder: 406-7-
Another slide with marked, unnamed specimens:
380/97b. Weser. 15. Moorlose Kirche, S.-Ufer. 8 m.
Finder: 611-4; 643-8.
N.B. Lange-Bertalot & Bonik (Arch. Hydrobiol., Suppl. 49, P 308/309,
1976) synonymize this taxon with Navicula permitis Hustedt (see tx 117-29).
It appears to be rather doubtful that the specimen on slide l43/32b
(648.I) belongs in this taxon. Its striation is limited to the margins
only so that a very wide axial area is formed, whereas the other specimens
have a very narrow, virtually non-existant axial area.

442
157-H Navicula ventosa Hustedt Plate 658/27-29
Op 157, p 281, f 28-31.
Of the two slides with marked specimens, both unnamed, the following is
here selected as lectotype:
143/65b. Kl. Wumme. 48. Bremen.
Finder: 525-7-
The other slide:
380/93b. Weser. 11. km 14- H m.
Finder: 614-4-7•
157-12 Navicula protracta forma elliptica Hustedt Plate 659/1-2
Op 157, p 283-
First mention without naming and formal description from the Schaalsee,
in op 126, p 401, t 37/19-20, to which Hustedt refers.
Hustedt did not mark or name this taxon in his Weser material. We found,
however, one of the specimens depicted in op 126, t 37/19, which is marked,
named "Navicula protracta Grun." on the label. This may serve as lectotype:
N6/82. Schaalsee, Zarrentiner B. Fahrhaus-Anleger.
Finder: 523-9.
N.B. In op 171, p 317, f 1435, Hustedt withdraws his epithet because
of Navicula protracta forma elliptica Gallik 1935, in which his taxon is
included.
157-13 Navicula protractoides Hustedt Plate 659/22-25
Op 157, p 283, f 32-33-
Of the two marked, unnamed specimens the following may be the lectotype:
38l/6b. Weser. km 17. N-Ufer. 8m. 23-
Finder: 551-5 (i-type f 33).
The second slide:
143/7. Hamme bei Ritterhude. Grund. 4.6.54.
Finder: 580.2 (i-type f 32).
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 86, 1985) include this
taxon as synonym in Navicula protracta (Grunow) Cleve.
157-14 Navicula bremensis Hustedt Plate 659/3-9
Op 157, p 284, f 34-35.
Holotype:
392/93. Bremen. Ochtum. 9.
Marked, unnamed specimens, the taxon is fairly frequent.
Finder: 462.9; 642.3.
157-15 Navicula constans var. symmetrica Hustedt Plate 658/41-46
Op 157, p 289, f 40-41-
Holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqweSirambler.ru
443
143/7. Hamme bei Ritterhude. Grund. 4-6.54-
Marked, unnamed specimens.
Finder: 617-2 (i-type f 40): 647-6 (i-type f 41).
Further slide:
141/4. Borgfeld, Wumme, Hypnum.
Marked, unnamed specimen. ■
Finder: 459-8-9.
157-16 Navicula lesmonensis Hustedt Plate 659/13-21
Op 157, p 293, f 36-37.
The taxon is marked - never named - on three slides, and most specimens
are of similar size. The slide from \vhich most probably Hustedt's drawings
were made is here chosen as lectotype:
143/7. Hamme bei Ritterhude. Grund. 4-6.54.
Finder: 280.7; 585-8; 588.7-
Paralectotype:
143/84b. Hamme. Grund. Ritterhude. 2.6.56.
Finder: 500-7-
Further slide:
143/66b. Kl. Wumme. 49- Bremen.
Finder: 492.1-
157-17 Navicula ingenua Hustedt Plate 659/10.-12
Op 157, P 301, f 19-20.
In the legend of the illustration, p 274, this taxon was erroneously named
"N. genuina".
Holotype:
Nll/9- Maschinen-Fleeth. Bremen. 4.
Marked specimen named on the label.
Finder: 555-7-
157 18 Navicula inscciabilis var.' dissipatoides Hustedt Plate 659/26 25
Op 157, p 303, f"27.
Holotype:
Nll/2. Borgfeld, Wumme. Hypnum.
Marked specimen named on the label.
Finder: 555-2-3-
157-19 Nitzschia visurgis Hustedt Plate 660/1-8
Op 157, p 339, f 43-
Three slides bear marked specimens, all named on the labels. Of these the
following shall be the lectotype:
W2/80. Maschinenfleet, Bremen. 15.
Finder: 551-9 (2 valves, one being the i-type f 43); 609-5-6-

444
The other slides:
W3/56. Weser. 18. Schonebecker Sand.
Finder: 285.2; 582.3-6.
Nll/4. Weser. Mittelsbiiren. 3.
Finder: 436.6.
157-20 Nitzschia adamata Hustedt Plate 66l/l-4
Op 157, p 342, f 46-47.
There is only one marked specimen, named on the label, which is therefore
to be considered as the holotype, although it is not a specimen illustrated
by Hustedt:
Wl/68. Maschinenfleet. Bremen. 13-
Finder: 462.2,
In the protologue Hustedt reported this taxon as frequent from another
locality from where a few additional micrographs are included:
380/39- Bremen. Lesum. 9. Graben.
157-21 Nitzschia admissa Hustedt Plate 662/6-11
Op 157, p 346, f 68-75-
We found no marked specimens of this taxon. It occurs frequently in the
material mentioned first in the protologue. The following slide containing
this material is therefore designated as lectotype:
143/93&* Hamme, Abwasserrohr bei Linteler Briicke.
N.B. Hustedt was not able to resolve the structure. In one of our
micrographs we succeeded in counting 46-48 striae in 10 urn.
157-22 Nitzschia agnita Hustedt Plate 66l/5-6
Op 157, p 347, f 51-
Holotype:
385/98. Bremen. Ochtum. 7.
Marked, unnamed specimen. -■-*■--
Finder: 282.9.
157-23 Nitzschia amplectens Hustedt Plate 660/9-17
Op 157, p 347, f 48-50.
There are three slides with the taxon's name on their labels, one of these
contains several specimens in one circle, otherwise the taxon is very
abundant. This latter slide is here declared as lectotype:
380/99b. Weser. 17- Schonebecker Sand.
Finder: 644-9-
The two further slides are without marked specimens of this rather frequent
taxon:
Wl/44. Weser. 35- Bremen.
Wl/69. Weser. 34- Bremen.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
445
N.B. It is somewhat surprising that Hustedt did not resolve the striae,
because we found that there are only about 38 in 10 j-im.
157-24 Nitzschia frequens Hustedt Plate 662/1-5
Op 157, p 348, f 52-54-
We could not find any marked specimen of this taxon. Therefore the
following slide with material cited in the protologue may serve as
lectotype (the taxon is by no means frequent):
H3/36b. Kl. Wumme. Bremen. 25-
157-25 Nitzschia fruticosa Hustedt Plate .6^1/7-11
Op 157, p 349, f 81-82.
Holotype:
W3/35- Maschinen-Fleeth. Plankton bei der Entw.-Anstalt. 10.
Marked colony named on the label.
Finder: 490.2.
N.B. The striation, not resolved by Hustedt, is comparatively coarse,
there are about 34 striae in 10 ^im.
157-26 Nitzschia manca Hustedt Plate 663/I-6
Op 157, p 351, f 95-96.
As lectotype is here proposed:
380/29b. Bremen. Lesum. Plankton. 5-
Marked, unnamed specimen.
Finder: 522.2 (i-type f 95)-
Further slides:
380/39* Bremen. Lesum. 9- Graben.
Marked, unnamed specimen.
Finder: 284.1.
W5/6. Hunte, bei Osttrittum. 17-
Marked specimen named on the Itxbel.
Finder: 587-3-
N.B. I am convinced that the two specimens on the two first-mentioned
slides are those which Hustedt had before himself when making the
description. The illustrated lectotype is the shorter specimen (about 38 um),
whereas the specimen on the second-named slide has the maximum size,
57 \m measured as compared i*ith Hustedt's 55 M-ni in the description.
However, Prof. Lange-Bertalot informs me that these two specimens do not
belong in the same taxon. He suggests that the specimen on slide 380/39
should be regarded as Nitzschia frequens Hustedt (see tx 157-24), the other
two specimens on slides 38o/29b and W5/6 would then be considered as N.
manca Hustedt. - In our earlier paper (Lange-Bertalot & Simonsen, Bacil-
laria 1, p 41, 1878) the situation could not be definitely clarified,
because the specimens of op 157 had not been found at that time.

446
157-27 Nitzschia sociabilis Hustedt Plate 662/12-18
Op 157, p 354, f 91-94.
Holotype:
Wl/68. Maschinenfleet. Bremen. 13-
The taxon is not marked, it is very abundant and named on the label.
N.B. The structure of this taxon, not resolved by Hustedt, is extremely
delicate. On one valve we succeeded in counting 50-52 striae in 10 urn.
157-2.8 Surirella tenera forma cristata Hustedt Plate 664/1-5
Op 157, p 363.
Synonvm: Surirella tenera forma nervosa A. Schmidt sensu Hustedt, op 71,
p 439, f 854-855, 1930.
One slide - mounted 1910 - contains specimens which are marked and named
on the label. This slide was actually re-labelled, and the diamond marks
were made much later than when the slide was mounted. This slide is here
taken as lectotype:
X4/65. Kl. Wumme bei Bremen, 1910.
Finder: 255-5} 259.8; 260.7; 315-6; 317-3; 317-4; 319-1; 345-9; 348.9;
352,6; 586.2.
N.B. Hustedt presents this taxon 157-28 as "nov. nom.11, but actually
he introduces a new taxon, although his illustration was old.
157-29 Surirella visurgis Hustedt Plate 663/7-14
Op 157, p 363, t 1/8-10.
We have four slides with marked specimens, all named on the labels. As
lectotype is chosen: .
X7/13- Kl. Wumme. 43* BerckstraAe. Bremen.
Finder: 434.1-2 (i-type f 10); 526.8-9; 641.2-5.
Paralectotype:
X7/14- Kl. Wumme. 44- Bremen.
Finder: 374.1; 526.3-6; 580.1-2; 6l6.2-3.
Further slides:
X7/15. Hamme, Plankton bei Worpswede. 14.
Finder: 339-2; 367-9; 403-8; 404.6; 427-8; 498.8-9-
W3/35- Maschinen-Fleeth, Plankton bei der Entw.-Anstalt. 10.
Finder: 401.2.
Op. 158- Phylogenetische Untersuchungen an Diatomeen. Osterr. Bot.
Zeitschr. 105, 193-211, 1958.
(158-1 Fragilariopsis ritscheri Hustedt)
Op 158, p 205, f 16-17.
This taxon was simultaneously published, also as "nov. spec", in op 159,
MJVUED BY pAhUTA yURI, Klev-2007,e-mail pahutaqwesrambler.
447
p 164, f 133-136, see tx 159-9.
(158-2 Fragilariopsis separanda Hustedt)
op 158, p 207, f 18-19.
This taxon was also simultaneously published as "nov. spec." in op 159,
p 165, f 108-112, see tx 159-10.
Op. 159- Diatomeen aus der Antarktis und dem Siidatlantik- Deutsche Antarkt.
Exped. 1938/39, Wiss. Ergebn. 2 (3), 103-191, 1958.
159-1 Thalassiosira delicatula Hustedt Plate 665/1-9
Op 159, p HO, f 8-10.
No marked or named specimens of this taxon exist. Therefore the following
slide with material cited in the protologue to contain the taxon "very
frequent" is proposed as lectotype:
276/98a. Antarktis. 69°05'S, 4°25'W. Salpa fusiformis.
N.B, VanLandingham (Catalogue 7, p 3994, 1978) renames this taxon Th.
expecta VanLandingham, because of Th. delicatula Ostenfeld 1907-
Fryxell & Hasle (Phycologia 18, p 3§4, 1979) recombine this taxon:
Thalassiosira gracilis var. expecta (VanLandingham) Fryxell & Hasle.
159-2 Coscinodiscus pseudodenticulatus Hustedt Plate 665/10-14
Op 159, p 117, f 20-21.
There are two slides with marked specimens named on the labels. As
lectotype is chosen:
B5/13- Siidatlantik, aus Salpa. 1.
Finder: 250.9; 257-1; 467-2-3; 489-5-6; 611.I; 6l8.9; 670.4; 677-4-5-
Isolectotype:
Ad/78. Siidatlantik, aus Salpa. 1.
Finder: 408.4-
N.B. We did not find the two iconotypes. There is also some discrepancy
between Hustedt's description and our observations as to the size: the
specimens marked by Hustedt range in diameter from 29 to 44 um, whereas
Hustedt gives 60 urn as smallest size.
Jouse in Jouse, Koroleva & Nagaeva (Trudy Inst. Okeanol. 61, p 66,
1962) transferred this taxon to Porosira.
159-3 Coscinodiscus ritscheri Hustedt Plate 666/1-5
Op 159, p 117, f 44-46.
There are several slides with marked specimens of which none is named.
On the following we were able to locate the only specimen illustrated by
Hustedt; it may therefore be accepted as lectotype:

448
276/97b. Antarktis. 68°49'S, 0°40'W. Salpa fusiformis.
Finder: 377-2-5 (i-type f 46); 474-7-8.
Isolectotype:
276>/97a. Antarktis. 68°49'S, 0°40'W. Salpa fusiformis.
Finder: 189-5-8; 409-3; 561.4-7j 704-4-
N.B. Hasle (Nytt. Mag. Bot. 15, p 196, 1968) transferred this taxon
to the genus Thalassiosira.
159-4 Thalassionema elegans Hustedt Plate 667/1-6
Op 159, p 140, f 93-
The taxon is marked, with name on the labels, on two slides, of which I
select the following as lectotype:
276/l00b. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis.
Finder: 307-5; 522.6.
Isolectotype:
W5/23. Antarktis. 69°43'S, 6°30'0. aus Salpen.
Finder: 410.7-8; 590.7-8-
N.B. Hasle & Mendiola (Phycologia 6, p 110, 1967) synonymize this taxon
with and include it in Thalassionema bacillaris (Heiden) Kolbe.
159-5 Thalassiothrix lanceolata Hustedt Plate 667/7-11
Op 159, P 142, f 92-
The taxon is nowhere named but marked on two slides of which the following
may serve as lectotype:
276/49a. Siidatlantik. 41°30,S, 0°01'W. 17-
Finder: 527-4-
The other slide:
276/52. Siidatlantik. 39°14,S, 0°03'W. 18.
Finder: 398.8; 432.5 (3 specimens).
N.B. Hallegraeff (Diatom Research 1, p 68, 1986) recombines this taxon:
Thalassiothrix longissima var. lanceolata (Hustedt) Hallegraeff.
159-6 Cocconeis curiosa Hustedt Plate 668/1-8
Op 159, P 143, f 96-99.
We found marked specimens on two slides, all unnamed. As lectotype is here
chosen:
Wa/74- Antarktis. 69°43'S, 6°30'0. aus Salpen.
Finder: 463-2-5; 526.3-
Isolectotype:
276/100a. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis. 10.
Finder: 313-7-
sCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwe»rambl<
449
159-7 Navicula diploneiformis Hustedt Plate 668/9-11.
Op 159, P 147, f 100.
Holotype:
276/99b. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis. 10.
Marked, unnamed specimen.
Finder: 551.6-9-
N.B. The dimensions are erroneously incorrectly given, as Hustedt noted
in his copy, they should read 14 x 6.5 um-
In op 172, p 367, f 1458A, Hustedt synonymizes this taxon with and
includes it in Navicula marnieri Manguin 1957•
159-8 Amphora antarctica Hustedt Plate 668/12-18
op 159, p 151, f 104-105.
The taxon is marked on three slides but named on the label of one only
which latter is therefore taken as lectotype:
276/lOOb. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis. 10.
Finder: 288.1-2; 347-7; 397-6.
Isolectotypes:
W5/23- Antarktis. 69°43'S, 6°30'0. aus Salpen.
Finder: 219-4-
276/99b. Antarktis. 69°43'S, 6°30,0. Salpa fusiformis. 10.
Finder: 311.6-9.
N.B. Contrary to Hustedt's statement the striation is not very
difficult to resolve, about 34-36 striae in 10 |om were counted. In all cases
the striae were short and close to the raphe, except in one case on slide
no. 276/99b, where the striae extend from near the raphe to the dorsal
margin.
159-9 Fragilariopsis ritscheri Hustedt Plate 669/1-7
op 159, p 164, f 133-136, 153.
This taxon was simultaneously declared as "nov. spec." in op 158, p 205,
f 16-17 (tx 158-1).
The specimens illustrated by Hustedt could not be found. We did find,
however, marked specimens on two slides of which the following shall be
the lectotype, although the material is not particularly mentioned in the
protologue:
Wa/75b- 90°W, 68°S. St. 52.
The taxon's name is on the label.
Finder: 290.2-3; 408.2; 408.8; 493-1-
The other slide:
276/53a. Antarktis. Mageninhalt von Euphausia.
Marked, unnamed specimens.
Finder: 252.9; 281.2; 315-1-2.
N.B. Hasle (Nova Hedwigia, Beiheft 39, p 115, 1972) recombines this
taxon: Nitzschia ritscheri (Hustedt) Hasle.

450
159-10 Fragilariopsis separanda Hustedt Plate 669/8-15
Op 159, p 165, f 108-112.
This taxon was simultaneously published, also as "nov. spec", in op 158,
p 207, f 18-19 (tx 158-2).
Holotype:
Wa/77b. Sudatlantik, aus Salpa, 1.
Marked specimens named "Fragilaropsis" on the label, generally several
in one circle.
Finder: 285-9; 288-4-7; 315-8; 431-7; 435.1-2; 465.8; 555-5-6.
N.B. Hasle (Nova Hedwigia, Beiheft 39, p'115, 1972) places this taxon
in Nitzschia: Nitzschia separanda (Hustedt) Hasle.
159-11 Nitzschia compacta Hustedt Plate 670/1
op 159, p 169, f 160.
We found only one marked specimen named "Nitzschia" on the label which
must therefore be considered as the holotype:
276/l00b. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis. 10.
Finder: 671-1 (i-type?).
159-12 Nitzschia decipiens Hustedt Plate 670/2-8
Op 159, p 170, f 174-175-
The taxon is marked on two slides unnamed in both cases. The following
is selected as lectotype:
276/l00b. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis. 10.
Finder: 493-8 (i-type f 175).
Isolectotype:
276/99b. Antarktis. 69°43'S, 6o30'0. Salpa fusiformis. 10.
Finder: 645-9; 654-7-
N.B. The striation, previously not resolved, was now counted with about
44 striae in 10 um.
159-13 Nitzschia distantoi^es Hustedt Plate 676/9—10
Op 159, p 171, f 161.
Holotype:
276/lOOb. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis. 10.
Marked, unnamed specimen.
Finder: 438.2.
159-14 Nitzschia medioconstricta Hustedt Plate 670/11-13
Op 159, p 174, f 165-166.
The two specimens illustrated by Hustedt appear to be the only ones found
by him. They are marked, but not named, on two slides, of which the
following may serve as lectotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
451
276/99b. Antarktis. 69°43'S, 6°30'O. Salpa fusiformis. 10.
Finder: 673-8 (i-type f 166).
Isolectotype:
276/lOOa. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis. 10.
Finder: 258.7 (i-type f 165).
159-15 Nitzschia neglecta Hustedt Plate 671/1-7
Op 159, p 175, f 162-164.
The species is marked without name on two slides. As holotype must be
considered:
276/99b. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis. 10.
Finder: 227.1 (i-type f 163); 338.1 (i-type f 162); 583-5-8 (i-type f 164);
553.6.
Isotype:
276/l00b. Antarktis. 69°43'S, 6°30*0. Salpa fusiformis. 10.
Finder: 341-1-
N.B. The striae were not resolved by Hustedt. In our micrographs we
counted 36-38 striae in 10 um.
159—16 Nitzschia obscurepunctata Hustedt Plate 672/1-2
Op 159, p 176, f 171-
Holotype:
276/lOOa. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis. 10.
Marked, unnamed specimen.
Finder: 317.4-7.
N.B. Hustedt states in his description that the intervals between the
transapical ribs are very delicately, "kaum erkennbar", punctate (hence
the specific epithet). We have been unable so far to resolve this delicate
punctation.
159-17 Nitzschia omega Hustedt Plate 671/8-14
Op 159, p 176, f 169-170.
Holotype*:
276/78. Sudatlantik, aus Salpen. 1.
Marked, unnamed specimens.
Finder: 524-3; 619-8-9-
N.B. The taxon is not rare on this slide, and a few unmarked specimens
are included in the atlas. - Hustedt did not resolve the striation which
is, indeed, very delicate though not very dense. We counted 38-40 striae
in 10 um in the micrographs.
159-17 Nitzschia sicula var. rostrata Hustedt Plate 672/3-6
Op 159, p 180, f 128-132.
Holotype:

452
W7/62. Siidatlantik, aus Salpa. 1.
Marked specimensj originally named "Pseudonitzschia rostrata Hust." in
Hustedt's hand on the label, corrected later to "sicula v. rostrata" by-
one of my technicians.
Finder: 196.5 (i-type f 129 and 132); 282.3-6; 284-7; 289-1-4; 291.1-4;
342.6-9 (i-type f 131); 399-7; 405-3-6; 497-6; 523-2.
159-18 Nitzschia taenia Hustedt Plate 673/I-6
Op 159, p 180, f 195.
Three slides contain marked specimens, and one of these has the taxon's
name on its label, the others being without names. The former is here
selected as lectotype:
W5/23. Antarktis. 69°43'S, 6°30'0. aus Salpen.
Finder: 352.9.
Isolectotype:
276/iOOb. Antarktis. 69°43'S, 6°30'0. Salpa fusiformis. 10.
Finder: 498.2-3.
Further slide:
276/98b. 69°05'SJ 4°25'W. Salpa fusiformis. 9-
Finder: 264.1-4.
N.B. Because of Nitzschia taenia W. Smith l853, Hustedt's taxon must
be renamed:
Nitzschia taeniiformis Simonsen, nov. nomen, syn. N. taenia Hustedty
op 159, p 180, 1958.
159-20 Nitzschia turgidula Hustedt Plate 672/7-15
Op 159, p 182, f 172-173-
Holotype:
276/48b. Sudatlantik. 46°32,S, 0°02'W. 15.
Marked specimens named "Nitzschia" on the label.
Finder: 335-2-5; 365-3; 410.5-6; 430.3; 440.2-5 (i-type f 172); 441-2.
Op. l6l. A. Schmidts Atlas der Diatomaceenkunde, Heft 105 and 116, plates
417-420 and 461-464, 1958.
l6l-i Achnanthes separata Hustedt Plate 674/1-4
Op 161, t 418/4-5.
German but no Latin diagnosis included in the plate explanation.
Validating diagnosis: A Achn. brevipede Agardhii areovalva cum apicibus
sine structura differt.
Holotype:
Mal/31 (old no. M.a.31)- Victoria. Brasilien.
A mount with the two picked valves, named on the label. The raphe valve
is broken and the fragments are in very oblique position.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
453
l6l-2 Achnanthes skvortzowii Hustedt Plate 674/5-13
Op 161, t 419/14-17.
German but no Latin description included in the plate explanation.
Validating description: Valvae late lanceolatae, apicibus plus minusve
cuneatis, obtuse rotundatis, circiter 27-30 |im
longae, 9-11 P^ latae. Fissurae terminales rapho-
valvarum in contrariam directionem.
Two slides contain marked specimens named "Achn." on index sheets. The
following is taken as lectotype:
l67/3a. Baikalsee, Olhon Gate. 33 m. 5.
Finder: 258.8; 342.2-5-
Isolectotype:
l67/3b. Baikalsee. Olhon Gate. 33 m. 6.
Finder: 315-2.
N.B. Because of Achnanthes skvortzowii Jasnitsky 1936, this taxon has
to be renamed:
Achnanthes neoskvortzowii Simonsen, nov. nomen, syn. Ach. skvortzowii
Hustedt, op 161, t 419/14-17, 1958.
161-3 Achnanthes ignota Hustedt Plate 673/7-14
op 161, t 420/20-23.
German but no Latin diagnosis included in the plate explanation.
Marked specimens, named "Achn." on index sheetsy occur on two different
slides. As lectotype is selected:
202/l3b. Norwegen. Snigsfjord. 7.B.b.l.
Finder: 378.8; 467-3 (i-type f 22-23).
Isolectotype:
202/l9b. Norwegen. Snigsfjord. 7-B.f.3-
Finder: 403.2-5-
N.B. A validating Latin description is superfluous in this case,
because Hustedt described the same species twice, under two different
names and using the same specimens. Achnanthes ignota is identical with
Achn. solea Hustedt (tx 135-23) which was described in 1953 and has
therefore priority over Achn. ignota. Hustedt overlooked the solitary central
stigma in the raphe valve. This is very difficult to make out,
particularly in the valve represented by Hustedt's fig 22. It is on the right
side of our figs 11 and 12.
161-4 Aulacodiscus distinguendus Hustedt Plate 675/1-3
Op i6i, t 461/1-2.
Description included in plate explanation.
Holotype:
Ztl/20. Cementsten og Moler, Mors.
This is a "Typenplatte" mounted by P. Klavsen which contains the i-type
of both illustrations.

454
l6l—5 Aulacodiscus jucundus Hustedt Plate 676/2
Op 161, t 461/5-6.
Description included in plate explanation.
Holotype:
Ztl/20. Cementsten og Moler, Mors.
A "Typenplatte" mounted by P. Klavsen containing, among others, the i-type
of figs 5-6.
l6l-6 Aulacodiscus minimus Hustedt Plates 677/1-3, 678/1-3
op 161, t 463/12-15.
German but no Latin description included in plate explanation.
Validating description. Valvae diametro 42-52 urn, 5-8 rimoportulis margi-
nalibus, conspicuis. Centrum valvae depressum,
area centralis vel "rosetta" absunt.
Holotype:
E5/13 (old no. E.413). Fundort?
A slide with five picked valves, named on the label.
N.B. Although no pseudonodule could be made out with sufficient
certainty, it is not unlikely that these specimens belong in the genus
Actinocyclus, or, perhaps, in Cosmiodiscus. There is no doubt, however,
that they have nothing in common with the genus Aulacodiscus, except the
structureless spaces which are formed between the insertion points of the
labiate processes and the centre. Unfortunately no internal part of the
labiate processes is preserved in the valves, its shape could have helped
with a generic affiliation of the taxon.
161-7 Aulacodiscus irapressus Hustedt Plate 679/1-3
op 161, t 463/16.
Description included in plate explanation,
Holotype:
E5/14 (old no. E.414). Nancowry (Nikobaren).
A single mount made by E. Debes, named by Hustedt on the label.
Op. 162. Die Diatomeenflora der Unterweser von der Lesummundung bis Bremer-
haven mit Beriicksichtigung des Unterlaufs der Hunte und Geeste. Veroff.
Inst. Meeresforsch. Bremerhaven 6, 13-176, 1959-
162-1 Fragilaria oldenburgiana Hustedt Plate 680/1-5
Op 162, p 29, f 20-21.
The taxon is marked - never named - on three slides from the three
localities cited in the protologue. As lectotype is selected:
385/IO. Osternburger Kanal, Oldenburg. 44-
Finder: 280.8-9-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
455
The other slides:
385/l7a. Ktistenkanal obh. Oldenburg. 45-
Finder: 612.7.
N13/20. Hunte. 5-
Finder: 519-2.
162-2 Achnanthes suchlandtii var. robusta Hustedt Plate 680/6-8
Op 162, p 40, f 24-25-
Holotype:
384/8O. Hunte. 32. km 7-5-
Marked, unnamed specimen.
Finder: 338.7-8.
162-3 Achnanthes biceps Hustedt Plate 680/9-11
Op 162, p 41, f 22-23.
Holotype:
384/30b. Geeste. 36.
Marked, unnamed specimen.
Finder: 489-7-8.
162-4 Diploneis dijnorpha Hustedt Plate 68o/l2-14
Op 162, p 44, f 18-19.
Holotype:
04/78. Weser, PI. vor Geeste-Mdg. 230.
Marked specimen named on the label.
Finder: 347-3-6.
162-5 Caloneis visurgis Hustedt Plate 680/15-19
Op 162, p 70, f 26-28.
The taxon is not marked or named. It is very frequent on the two slides
containing the sample cited ?n the protologue. Of these the following is
here selected as lectotype:
383/59a. Blexen. Weser. 212.
Isolectotype:
383/59b. Blexen. Weser. 212.
N.B. It is difficult to believe that this taxon belongs in the genuc
Caloneis. Further, submicroscopical, investigations are necessary to
clarify the taxonomic position of the species.
162-6 Araphiprora subcostata Hustedt Plate 680/20-22
Op 162, p 77, f 13-
Holotype:

456
Rb/44* Hunte. 25.
Marked specimen named on the label.
Finder: 458.8.
162-7 Amphiprora spleudida Hustedt Plate 68l/l-4
Op 162, p 78, f 29-30.
Holotype:
383/40b. Weser. 200.
Marked specimen named on the label.
Finder: 252.8-9-
162-8 Nitzschia aestuarii Hustedt Plate 682/1-4
Op 162, p 89, f 8-9-
Holotype:
384/l3a. Geeste. 23.
Marked specimens, several in each circle, named "Nitzschia" on the label.
Finder: 369-7-8; 372.1-4; 461.9.
162-9 Nitzschia graciloides Hustedt Plate 682/10-14
Op 162, p 95, f 4-5.
Holotype:
385/lb. Hunte. 57-
Marked, unnamed specimens, generally several in one circle.
Finder: 311-6; 338.2-5; 398-8; 548.1-4.
N.B. Lange-Bertalot & Simonsen (Bacillaria 1, p 33, 1978) renamed this
taxon Nitzschia graciliformis Lange-Bertalot & Simonsen, because of
Nitzschia graciloides Hustedt 1953 (see tx 140-4).
162-10 Nitzschia translucida Hustedt Plate 682/5-9
Op 162, p 96, f 10-12.
There are two slides with marked, unnamed, specimens of which the following
is chosen as lectotype:
383/56a. Blexen. Weser. 209-
Finder: 307.8 (2 specimens); 308.1-4; 458-7; 517.2-5.
Isolectotype:
383/56b. Blexen. Weser. 209-
Finder: 528.4.
162-11 Nitzschia hoebnkii Hustedt Plate 683/1-5
Op 162, p 97, f 6-7.
Holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
457
384/20a. Geeste. 30.
Marked, unnamed specimens.
Finder: 221.1-2; 221.6 (3 specimens); 284.3-6; 341.6; 367-6; 405-2;
437-7- 460.1; 522.4; 553-5-8.
162-12 Nitzschia behrei Hustedt Plate 683/6-IO
Op 162, p 99, f 1-3-
We found five slides with marked specimens, all unnamed. As lectotype is
here proposed:
382/90b. Weser. 164. Plankton.
Finder: 316-4-5 (i-type f 1); 342-3; 471-6; 492.7-8; 582.7-8.
Isolectotypes:
382/91a. Weser. 164. Plankton. 382/92a. Weser. 164. Plankton.
Finder: 254-9; 341.2; 345-4; 552.8. Finder: 528.5-6.
382/91b. Weser. 164. Plankton.
Finder: 520.'8-9.
Further slide:
382/98b. Weser, Plankton. 170.
Finder: 522.8-9 (i-type f 2-3).
N.B. Hustedt could not resolve the striation. We found the density
to be 40 striae in 10 urn.
Op. I63. Die Diatomeenflora des Salzlackengebietes im osterreichischen
Burgenland. Sitzungsber. Osterr. Akad. Wiss., Math.-nat. Kl., Abt. I, 168,
387-452, 1959.
163-1 Nitzschia amphioxoides Hustedt Plate 684/1-4
Op 163, p 433, f 21.
Holotype:
W5/10 (old no. W.410). 0b. Stinker. Burgenland. Osterreich. Le. 6l.
The taxon is not marked, it is very frequent on the slide and named on
the label.
N.B. In op 164, p 415 (footnote), Hustedt renamed this taxon: Nitzschia
subamphioxoides Hustedt, because of N. amphioxoides Hustedt 1949 (see
tx 122-40).
163-2 Nitzschia amphibia forma rostrata Hustedt Plate 684/10-13
op 163, p 436, f 26-27.
The taxon is marked, not named, on two slides of which the following shall
be the lectotype:
391/10. Earscholacke. 1. Burgenland. Osterreich.
Finder: 582.3-6 (i-type f 26),
Isolectotype:

458
39l/l2. Darscholacke. 1. Burgenland. Osterreich.
Finder: 551.6 (i-type f 27).
163-3 Nitzschia diversa Hustedt Plate 684/5-9
Op 163, p 436, f 14-17.
Holotype:
W5/11 Cold no. W4H). Albersee. 1. Burgenland, Osterreich.
Marked specimens named on the label.
Finder: 368.6; 427-4-5 (2 specimens); 517-1.
163-4 Nitzschia legleri Hustedt Plate 685/I-8.
Op 163, P 437, f 18-22.
In Lange-Bertalot & Simonsen (Bacillaria 1, p 40, 1978) I proposed a
slide as type on which no marked specimens exist. In the meantime we found
several slides with marked specimens of this taxon which are named
"Nitzschia" on their labels, except slide 39l/l9 which is without name.
Therefore I select now the following as lectotype:
391/14. Hallabernlacke. 1. Burgenland. Osterreich.
Finder: 491-4; 551-2; 58O.6.
Paralectotype:
391/13- Hallabernlacke. 2. Burgenland. Osterreich.
Finder: 399-7-
Further slides:
39l/l7- Lange Lacke. 1. Burgenland. Osterreich.
Finder: 527-7-
391/8. Darscholacke. 2. Burgenland. Osterreich.
Finder: 46O.6; 518.5-
39l/l9- Szerdahelyer Lacke. Burgenland. Osterreich. 1.
Finder: 283-2; 493-3-
163-5 Nitzschia subtilioides Hustedt Plate 685/9-14
Op 163, P 438, f 9-13.
In Lange-Bertalot & Simonsen (Bacillaria 1, p 55, 1978) I proposed a
different slide than that cited below as lectotype, but the specimens on
that slide are not marked. We are now able to present a slide with marked
specimens named "Nitzschia" on the label, and this is here accepted as
the holotype:
391/15. Heidlacke. 1. Burgenland. Osterreich.
Finder: 314-3; 525-9; 615-2-3; 616.5.
163-6 Nitzschia austriaca Hustedt Plate 685/15-22
Op 163, p 439, f 28-31-
Holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
459
W5/12 (old no. W412). Ob. Schrandl. 2. Burgenland. Osterreich.
Marked specimens named on the label.
Finder: 490.5; 492-4; 493-6-9; 494.2.
Further slide:
39l/2. Runde Lacke. 1. Burgenland. Osterreich.
Finder: 433-6; 556.8; 613.I (several specimens).
N.B. The central fibulae are farther distant than the others and thus
betray the presence of a central nodule, a feature not observed or at least
not mentioned by Hustedt. It is indicated in only one of his five figures.
163-7 Surirella hoefleri Hustedt Plate 686/1-11
Op 163, p 441, f 32-34-
There are three slides with marked specimens named on the labels. Two of
these were declared as types by Hustedt, and of these I select here as
lectotype:
X7/88 (old no. X688). Runde Lacke. 3- Burgenland. Osterreich.
Finder: 256.5; 317-2; 399-9; 457.9; 493-8-9; 521.8; 556.4.
Isolectotype:
X7/89 (old no. X689). Runde Lacke. 3- Burgenland. Osterreich.
Finder: 311.8; 435-8; 43^-1; 582.6.
Further slide:
X7/90 (old no. X690). Fuchsloch-Lacke. Burgenland. Osterreich. 1.
Finder: 341-7; 429-7-8; 467-7; 492.2-5; 610.3; 612.3.
Op. I64. Die Diatomeenflora des Neusiedler Sees im osterreichischen
Burgenland. Osterr. Bot. Zeitschr. 106, 390-430, 1959-
164-1 Navicula halophila forma robusta Hustedt Plate 687/1-4
Op I64, p 401, f 1-3-
Holotype:
Nll/88. Neusiedler See. PI. 0. 1.
Marked specimens named on the label.
Finder: 315-8; 372.5-8-
Further slides with marked, unnamed specimens:
327/35. Neusiedler See. PI. R. 1.
Finder: 405-1; 439.7-
327/45. Neusiedler See. PI. R. 6.
Finder: 286.8; 372.3; 408.5-
327/46. Neusiedler See. PI. R. 6.
Finder: 401.7.
N.B. The central pores of the specimen on slide 327/46 are furnished
on the outside with fissures which point to opposite directions, very
similar to those in Neidium (see our plate 687/4)- This situation could
not be detected in any of the other marked specimens. It may also be

460
noted here that this specimen is larger than is given in Hustedt's
description.
164-2 Navicula halophilioides Hustedt Plate 688/6-13
Op 164, p 402, f 4-7.
Only one marked - unnamed - specimen could be found on a slide on which
the taxon is very frequent. This is considered as the holotype:
327/42. Neusiedler See. PI. R. 5-
Finder: 408.2.
164-3 Navicula stuudlii Hustedt Plate 687/5-11
Op 164, p 403, f 8-9-
The species is nowhere marked or named. On the following slide it is
abundant for which reason it is here proposed as lectotype:
327/l6a. Neusiedler See. Aufwuchs. 1942. c.
N.B.- Krammer & Lange-Bertalot (Naviculaceae, p 96, 1985) include this
taxon as synonym in Navicula duerrenbergiana Hustedt (cf. tx 84-I). The
slides cited there as "type slides" have nothing to do with the two taxa
involved.
164-4 Navicula subsulcatoides Hustedt Plate 689/8-12
Op 164, p 404, f 11-12.
Of the two marked specimens, both unnamed, the following is chosen as
lectotype:
327/22b. Neusiedler See. Grund. 1.
Finder: 550.2 (i-type f 11).
Paralectotype:
327/28. Neusiedler See. Grund. 6.
Finder: 550.1 (i-type f 12).
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 8l, 1985) include this
t=>xon as synonym in Navicula sioncculata Hustedt (sec tx 117--33).
164-5 Navicula tenuipunctata Hustedt Plate 688/1-5
Op 164, p 405, f 10, 43-45.
Among the four slides with marked, unnamed specimens the following is taken
as lectotype:
327/l0a. Neusiedler See. Morbisch. 21.VII.1958. S 10 cent.
Finder: 257.6; 340.2-5; 370.5-8; 376.6; 401.9-
Paralectotype:
327/lOb. Neusiedler See. Morbisch. 8.IX.1958. S 10 ccm.
Finder: 588.2-5.
Further slides:
327/9a. Neusiedlersee vor Rust. S. 12 ccm. 30.VI.1956.
Finder: 530.2.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
461
327/9b. Neusiedler See. Rust. 8./9.VII.1957■ S 10 ccm, getr.
Finder: 525-9; 560.7-
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 98, 1985) include this
taxon as synonym in Navicula ordinaria Hustedt (see tx 126-4).
164-6 Nitzschia acicularioides Hustedt Plate 688/14-19
Op 164, p 415, f 22-24.
Of the slides containing the samples cited in the protologue the following
is selected as lectotype:
327/lOb. Neusiedler See. Morbisch. 8.IX.1958. S 10 ccm.
The taxon is abundant and occurs, together with other taxa, in greater
numbers in the circles at the following finder positions:
Finder: 463-6-9; 588.2-5-
N.B. Hustedt was unable to resolve the structure. In one specimen we
succeded now to count 38 striae in 10 jam, amazingly few, but the valves
are extremely delicate.
164-7 Nitzschia kuetzingioides Hustedt Plate 688/20-25
op 164, p 417, f 25-29.
Holotype:
327/l9b. Neusiedler See. Grund. 1.
Marked, unnamed specimens.
Finder: 250.7; 278.6; 280.8; 400.2; 401.2-5; 609.8.
N.B. The structure, not resolved by Hustedt, was now counted in our
micrographs to consist of 46-48 striae in 10 [ua.
I64-8 Nitzschia geitleri Hustedt Plate 689/1-7
Op 164, p 418, f 20-21.
Four slides with marked - never named - specimens were found, of which
the following is chosen as lectotype:
327/9b. Neusiedler See. Rust. 8./9.VII.1957- S 10 ccm, getr.
Finder: 405-5; 463-7; 587-6; 588.6.
Further slides: *
327/l0a. Neusiedler See. Morbisch. 8.IX.1958. S 10 ccm.
Finder: 227-1; 341-5-8; 373-8; 438.4; 490-5.
327/lOb. Neusiedler See. Morbisch. 8.IX.1958- S 10 ccm.
Finder: 463-6-9-
327/8la. Neusiedler See. PI. A. 1.
Finder: 489-5-
N.B. Hustedt did not resolve the striae. His guess that the striae
might amount to "about 45 in 10 \in was very close, we resolved the striae
and counted 46 in 10 um.

462
Op. 166. Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschlandj Osterreich und der
Schweiz, Band 7, Teil 2, Lief. 6, 737-845, 1959-
166-1 Anomoeoneis serians forma undulata Hustedt Plate 690/1-3
Op 166, p 747, f 1112b.
Holotype:
Nd/83. Mobile, Ala.
Marked, unnamed specimens (housed in the "Anomoeoneis box").
Finder: 313-3 (i-type?); 319-2; 520.6.
166-2 Stauroneis phoenicenteron forma angulata Hustedt Plate 690/4-5
Op 166, p 768, f 1118b.
Holotype:
Na2/25. Witton Loch. Schottland. 417-
Marked specimen named on the label.
Finder: 311.4.
(166-3 Stauroneis dubitabilis Hustedt)
op 166, p 789, f 1134.
Synnonym: Stauroneis gregorii var. densestriata Hustedt, op 102, p 6l6,
f 43-45- See tx 102-16.
St. dubitabilis is not a new species as declared by Hustedt in op 166^
p 789, but is one of Hustedt's varieties being raised to specific rank
(novus status) and receiving at the same time a new name (novum nomen).
The type of tx 166-3 Stauroneis dubitabilis Hustedt is therefore the type
of tx 102-16 Stauroneis gregorii var. densestriata Hustedt and is here
treated under the latter number.
166-4 Stauroneis legleri Hustedt Plate 69l/l-9
Op 166, p-703-, f 1138. --
Holotype:"
Na2/31 (old no. Na 131)- Unt. Albersee. 2. Burgenland. Osterreich.
marked specimens named on the label.
Finder: 339-2; 340.7; 373-1; 460.6 (3 specimens); 492.8-9; 585-3-
166-5 Stauroneis elata Hustedt Plate 690/6-9
Op 166, p 794', f 1139-
There is only one slide with marked specimens named on the label. This
must be considered as the holotype:
Na2/20. Memmert. 12349- Verlandungszone. b.
Compare Hustedt, op 102, p 577-
Finder: 314-8; 405-5; 432.5; 465-7; 492.8 (i-type f 1139 left); 525-1-2;
621.7-8.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei>rambler.ru
463
166-6 Stauroneis norvegica Hustedt Plate 69l/l4-l8
Op 166, p 795, f 1141-
Holotype:
191-24- Festhelsvatn, Norwegen.
Marked, unnamed specimen.
Finder: 340.5.
N.B. Krammer & Lange-Bertalot (Naviculaceae, p 115, 1985) include this
taxon as synonym in Stauroneis alpina Hustedt (tx 112-4). - This Norwegian
specimen has a more delicate striation, we counted about 44 striae in
10 urn.
166-7 Stauroneis branderi Hustedt ' Plate 691/10-13
Op 166, p 796, f 1142.
Holotype:
Na2/28. Finnland. Haapajarvi. 25- c.
Marked specimen named on the label.
Finder: 552.8.
N.B. Krammer (in Krammer & Lange-Bertalot, Naviculaceae, p 17, 1985)
recombines this taxon: Caloneis branderi (Hustedt) Krammer. He claims that
the interior chamber openings are rather conspicuous. No such openings
can be made out in the holotype, however, although the new combination
appears to be justified. The "line of interior openings" is due to an
illusion which is brought about by the bend between valve face and mantle.
166-8 Stauroneis decipiens Hustedt Plate 691A9-26
Op 166, p 827, f H70.
There are two slides with marked, unnamed specimens. As lectotype is here
selected:
Na2/34- Bosporus. 4120.
Finder: 402.5-6; 559-5-6.
The other slide:
Na2/33 ."Helgoland, an Oscillatorla.
Finder:--285.2; 463-4-7; 526.5-6 (3 specimens).
166-9 Stauroneis arctica Hustedt Plate 692/l-U
Op 166, p 829, f 1171-
Holotype:
Na2/23- Gronland-Exp. 1.
Marked specimens named on the label.
Finder: 313-7 (i-type f 1171 right); 374-3-6; 463-9 (i-type f 1171 left);
523-8-9; 553-5; 613-3-6.
Isotype:
N6/32. Gronland-Exp. 1.
Marked specimens named on the label.
Finder: 342.5; 344-6; 613-2-3.
N.B. There remains some doubt that Hustedt was able to resolve the

464,
structure. Our specimens have rather constant densities of the transapical
striae, 41-42 in 10 urn.
Op. 167. A. Schmidts Atlas der Diatomaceenkunde, Heft 117-118, t 465-472,
1959-
I67-I Aulacodiscus australiensis Hustedt Plates 693/1-2, 694/1-2
Op 167, t 465/8-10.
German, no Latin, description included in plate explanation.
Validating description: Valvae diametro 100-200 urn. Areolae liberae, cir-
citer .2-3 in 10 urn, interspatii dense granulati.
Rimoportulae marginales, 5-6, parvae.
The taxon's name appears on three slides, all single mounts. As lectotype
is chosen:
E5/27 (old no. E.427). Bass-Strasse.
I-type f 8.
Isolectotypes:
E5/25 (old no. E.425). Batistralie, Australien.
I-type f 9-10.
E5/26 (old no. E.426). Bass-Strasse.
167-2 Triceratium (Trigonium) vetustum Hustedt Plates 695/1-2, 696/1-4
Op 167, t 466/8-II.
Description included in plate explanation. -
The taxon's name is on the labels of four slides, all single mounts. As
lectotype is taken:
Hl/73 (old no. H73)- Udi. Gouv. Charkow.
A mount of E. Debes with the i-type f 9*
Isolectotype:
Hl/70 (old no. H70). Udi, Russland.
T-type f 8 (in op 167 erroneously stated to be from Simbirsk material).
Further slides:
Hl/71 (old no. H71). Simbirsk.
I-type f 10.
Hl/72 (old no. H72). Simbirsk.
I-type f 11.
167-3 Triceratium (Trigonium) verecundum Hustedt Plate 697/1-2
Op 167, t 466/12.
Description included in plate explanation.
Holotype:
Hl/74 (old no. H74)- Oamaru.
A single mount named on the label.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
465
I67-4 Triceratium (Trigonium) officiosum Hustedt Plates 698/1-2, 699/1-4
Op 167, t 466/13-16.
Description included in plate explanation.
Of the three slides, all single mounts, with the taxon's name on the
labels, the following is selected as lectotype:
Hl/77 (old no. H77)- Udi, Russland.
I-type f 15-16.
Isolectotypes:
Hl/76 (old no. H76). Udi, Russland.
I-type f 13.
Hl/75 (old no. H75). Udi, Russland.
I-type f 14.
167-5 Triceratium (Trigonium) subofficiosum Hustedt Plate 700./1-2
Op 167, t 466/17.
German, no Latin description included in plate explanation.
Validating diagnosis: A Trie. (Trig.) officioso Hustedtii structura deli-
catiore differt, planum valvae irregulariter punc-
tato-areolatum.
Holotype:
Hl/78 (old no. H78). Campeche-Bai.
A single mount made by E. Debes, named (in Hustedt's hand) on the label.
167-6 Triceratium (Trigonium) multifrons forma stricta Hustedt. Plate 700/5
Op 167, t 467/4-
Validating diagnosis: Differt a typo marginibus rectis.
Holotype:
Hl/83. Atlantic City, N.J.
A single mount named on the label.
167-7 Triceratium (Trigonium) capitiferum Hustedt Plate 697/3-4
Op 167, t 467/10-11.
Description included in plate explanation.
Holotype:
H2/64 (old no. HI64). Simbirsk.
A single mount named on the label.
167-8 Triceratium (Trigonium) gracilliraum Hustedt Plate 700/3-4
op 167, t 467/18-19.
Description included in plate explanation.
Holotype:
H4/43 (old no. H343)- Sendai, Japan.
A slide with two picked specimens, mounted by E. Debes, with the taxon's
name on the label.

466
167-9 Triceratium (Trigonium) sentum forma major Hustedt Plate 701/1-5
Op 167, t 467/25-26.
Description included in plate explanation.
The following slide is taken as lectotype:
H 5/8. SmoIkowo.
A mount with two picked valves, the i-type of f 25 and a valve positioned
on its margin. Name on the label.
Isolectotype:
H5/5- Smolkowo. Gouv. Simbirsk. Rutland.
A single mount of E. Debes named "Triceratium sentum Witt" on the label.
167-10 Triceratium (Trigonium) sparsipunctatum Hustedt Plate 702/1-4
op 167, t 467/29.
Description included in plate explanation.
Holotype:
H5/78 (old no. H478). Udi, Gouv. Russland. (should read: Gouv. Charkow)
A mount with two picked valves , one being the i-type of f 29, the other
a valve on its side. Name on the label.
N.B. The lines on the valve are contact contours between gelatine,
mountant (Styrax), and the valve silicon, thus artefacts.
167-11 Triceratium (Trinacria?) crispulum Hustedt Plate 703/1-2
Op 167, t 468/1.
Description included in plate explanation.
Holotype:
H6/13 (old no. H513). Udi, Gouv. Charkow, Russl.
This is a single mount made by E. Veissflog who gave it his no. 2292.
Hustedt added the taxon's name.
167-12 Triceratium (Trigonium pseudonervatum var.?) luculentum Hustedt
Plate 704/1-2
Op 167, t 468/3-
Description included in plate 'explanation.
Holotype:
H7/6 (old no. H606). Oamaru.
A single mount named "Triceratium luculentum Hust." on the label.
167-13 Triceratium (Trigonium) obtusangulum Hustedt Plate 705/1-2
Op 167, t 468/5.
Holotype:
H4/47 (old no. H347). San Pedro. Calif.
A single mount with the taxon's name on the label.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
467
167-14 Triceratium (Trigonium) udiense Hustedt
.Plates 706/1-4, 707/1-3, 708/1-2
Op 167, t 468/10-12.
Description included in plate explanation.
Of the three slides with the taxon's name on their labels the following
is selected as lectotype:
H5/75 (old no. H475). Udi, Russland.
A mount with two picked valves, the i-type of f 12 and a valve on its side.
Isolectotypes:
H5/74 (old no. H474). Udi, Russland.
Single mount, i-type f 11.
H5/73 (old no. H473)- Udi. Gouv.. Charkow.
A single mount of E. Debes, i-type f 10.
167-15 Triceratium (Trigonium) veterarium Hustedt Plate 709/1-4
Op 167, t 468/13-14.
Description included in plate explanation.
Holotype:
H5/86 (old no. H486). Nancowry (Nikobaren).
A mount with the two illustrated valves, made by E. Debes. Name on the
label.
N.B. The taxon has true ocelli in the corners and can therefore not
belong in the genus Trigonium CIeve, as indicated by Hustedt.
167-16 Triceratium (Trinacria?) splendidum Hustedt Plate 710/1-3
Op 167, t 469/2.
Description included in plate explanation.
Holotype:
H5/79 (old no. H479). Simbirsk.
A single mount named "Triceratium splendidum" on the label.
167-17 Triceratium (Trinacria?) simile Hustedt Plate 711/1-3
- Op 167, t 469/3-
Description included in plate explanation.
Holotype:
H5/77 (old no. H477). Udi, Russland.
A single mount named "Triceratium simile" on the label.
N.B. The two central structures termed "pores" by Hustedt are solid,
shallow, siliceous bars on the valve outside (a product of diagenesis?).
167-18 Triceratium (Trigonium) demissum Hustedt Plate 712/1-4
Op 167, t 469/5.
Description included in plate explanation.
Holotype:

468
H3/12 (old no. H212). Atlantic City, N.J.
A single mount named on the label.
167-19 Triceratium (Trigonium) haitianum Hustedt Plate 705/3
Op 167, t 470/9.
Description included in plate explanation.
Holotype:
H4/1 (old no. H301). Jeremie, Haiti.
A single mount with the taxon's name on the label.
167-20 Triceratium (Trigonium) (lineatum v^r.?) taeniatum Hustedt
Plates 713/1-2, 714/1-3
Op 167, t 471/1.
Description included in plate explanation.
Holotype:
H6/12. Oamaru. Neuseeland.
A mount with three picked valves made by E. Debes and labelled by Debes
"Triceratium lineatum Grev." with reference to "A.Schm. Atl. 128,1".
N.B. The specimen illustrated by Hustedt is by far the largest of the
three, as can be seen in our micrographs. The affiliation with Trigonium
indicated by Hustedt is quite unlikely, the valves appear to have possessed
veritable ocelli.
167-21 Triceratium (Trigonium) pulchrum Hustedt Plate 715/1-3
Op 167, t 471/2.
Description included in plate explanation.
Holotype:
H7/7 (old no. H607). Kamichew, Rufiland.
Single mount with the taxon's name on the label.
N.B. The lines on the valve face are again contact lines between the
mountant, gelatine, and the valve.
167-22 Triceratium (Trigonium) venulosum forma quadrata Hustedt
Plate 708/3-4
Op 167, t 472/9-
Validating diagnosis: Differt a typo valvis quadrangularibus.
Holotype:
H5/84. Campeche Bank. (not Campeche-Bay as given by
A single mount with the name on the label. Hustedt)
Op. 168. A. Schmidts Atlas der Diatomaceenkunde, Heft 119-120, t 473-480,
1959-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweSrambler.ru
469
168-1 Triceratium circumvallatiim Hustedt Plates 716/1-4, 717/1-2
718/1-2, 719/1-2
Op 168, t 473/1-2, 474/1-2.
Description included in plate explanation.
There are five slides, all single mounts, with the taxon's name on the
labels. As lectotype is chosen:
H2/78 (old no. HI78). Sa. Monica.
I-type t 473/1.
Isolectotypes:
H2/75 (old no. H175). Sa. Monica.
I-type t 473/2
H2/77 (old no. HI77). Sa. Monica.
I-type t 474/2.
H2/76 (old no. HI76). St. Monica. Californien.
A mount of A. Elger, i-type t 474/1.
H2/74 (old no. HI74). Sa. Monica.
This specimen is not illustrated, also not cited in the protologue.
168-2 Triceratium (Trinacria?) turgidulum Hustedt Plate 720/-1-4
Op 168, t 478/8.
Validating description: Valvae triangulares marginibus leviter convexis,
polis non protractis, longitudo laterum circiter
100 urn. Areolae liberae,, rimoportulis centralibus.
Holotype:
248/6. Kamichew. Rufiland.
Unmarked, unnamed specimen.
Finder: 465-4-5-
N.B. Comparison with Hustedt's original micrograph (the rendition in
the atlas is rather poor) has shown that this is actually the very specimen
illustrated by Hustedt which was found after long search.
In the legend of figs 9-11, plate 478, Hustedt separates Triceratium
biforme Hustedt (tx 168-3) from Tr. turgidulum by the presence of one or
two slit-shaped pores in the centre which, according to his statement,
Tr. turgidulum does not possess. Our micrographs show quite clearly
(contrary to Hustedt's figure which alone he evidently examined and not
the actual specimen) that Tr. turgidulum does have three central labiate
processes of considerable size.
168-3 Triceratium (Trigonium) biforme Hustedt Plate 721/1-6
Op 168, t 478/9-11.
Description included in plate explanation.
Holotype:
H2/49 (old no. H149). Smolkowo. Gouv. Simbirsk. Rufiland.
A mount of E. Debes with the three illustrated valves. Name on the label.
Isotype:

470
248/13. Smolkowo, Russland.
Marked, unnamed specimen.
Finder: 582.1-4.
On a record sheet in slide box no. 248 Hustedt notes that he marked a
specimen of this taxon on a slide from Smolkowo. This is very likely the
specimen that he refers to.
168-4 Triceratium subquadrangulare Hustedt Plate 722/1-3
Op 168, t 480/10.
German, but no Latin description included in plate explanation.
Validating diagnosis: A Trie, quadrangulari Grevillei et Trie, sendaiensi
A. Schmidtii pseudocellis angustis et abrupte limi-
tatis differt.
Holotype:
H7/15 (old no. H615). Indischer Ozean. 17°45'S. 53°39'0.
A single mount with the taxon's name on the label.
Op. 170. Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Er.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 3, Lief. 1, 1-160, 1961.
(170-1 Navicula bachmannii Hustedt)
Op 170, p 17, f 1182.
This taxon is not a new species as declared by Hustedt, because it is based
on a variety of Lagerstedt (Navicula gibberula var. capitata Lagst. 1873)
which was raised to species rank and at the same time had to be given a
new name.
170-2 Navicula dubitanda Hustedt & Kolbe Plate 723/1-2
Op 170, p 19, f 1183.
The holotype has remained i-i the Hustedt Collection, contrary tc the
statement in the description:
397/10. Pr. 4- Ale, Norrbottn. Lan. Interglacial (Fromm). -
Journ. 12, pag. 105, 1958-
Marked specimen named on the label.
Finder: 463-9-
170-3 Navicula scopulorioides Hustedt Plate 723/6-7
op 170, p 30, f 1189.
Holotype:
N12/14 (old no. N.1114). Wakulla Beach, Florida, U.S.A. Pool. 13.I.51.
The taxon occurs in masses on the slide, there is no marked specimen, the
name is on the label. The type number given by Hustedt (N.1100) applies
to different species (see tx 170-7 and 170-12).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
471
170-4 Navicula rogallii Hustedt Plate 723/3-5
Op 170, p 32, f 1190.
Holotype:
N13/19 (old no. N.1219). Dubrovnik. Adria.
Marked specimen named on the label.
Finder: 495-1-4.
170-5 Navicula gigantea Hustedt Plate 724/1-5
Op 170, p 40, f 1194-
Holotype:
Nll/79 (old no. N.1079). Sudchinesisches Meer. 1481.
Marked specimen named on the label.
Finder: 339-6-9-
N.B. Hustedt's strial counts are incorrect. This was earlier pointed
out by Simonsen (Meteor Forsch. Ergebn. D 19, p 47, 1974), who also recom-
bined this taxon: Haslea gigantea (Hustedt) Simonsen.
170-6 Navicula crystallina Hustedt Plate 725/I-3
Op 170, p 42, f 1196.
Holotype:
397/85- Boknis Eck, Eckernforder Bucht. 15 m. 1.
Marked specimens named on index sheet.
Finder: 375-2-3; 488.8; 579-4 (i-type).
N.B. This taxon was recombined by Simonsen (Meteor Forsch. Ergebn.
D 19, p 47, 1974): Haslea crystallina (Hustedt) Simonsen.
170-7 Navicula crucigeroides Hustedt Plate 725/4-5
Op 170, p 47, f 1201.
Holotype:
Nll/lOO (old no. N.1100). Kap Wankarema.
Marked specimen named on the label.
Finder: 282.3.
N.B. This taxon was recombined by Simonsen (Meteor Forsch. Ergebn.
D 19, p 47, 1974): Haslea crucigeroides (Hustedt) Simonsen.
170-8 Navicula quarnerensoides Hustedt Plate 725/6-9
Op 170, p 49, f 1203.
There is quite a number of slides with marked and named specimens in the
collection of which several approach the dimensions of the illustrated
valve. Since no holotype was designated, I select here the following as
lectotype:
N12/5. Golf v. Neapel. 100+109- c.
The taxon's name is on the label.
Finder: 371.2-5-

472
Isolectotype:
Rb/95- Golf v. Neapel. 100+109- c.
Marked specimen named on the label.
Finder: 318-.5-6.
N.B. Contrary to the opinion of VanLandingham (Catalogue $, P 2759,
1975), I cannot see anything doubtful about the nomenclature or identity
of this taxon.
170-9 Navicula wawrikae Hustedt Plate 723/8-13
Op 170, p 52, f 1204.
There are three slides with marked specimens and the name on the labels
in the collection. Of these I select as lectotype:
N13/22. Golf v. Neapel. Posillipo. 10 m. 12.12.56.
Finder: 584.7.
Isolectotypes:
N13/21. Golf v. Neapel. Posillipo. 10 m. 12.12.56.
Finder: 256.2-5; 526.2-5.
N13/23- Golf v. Neapel. Posillipo. 10 m. 12.12.56.
Finder: 429-8 (girdle view).
N.B. This taxon was recombined by Simonsen (Meteor Forsch. Ergebn.
D 19, p 48, 1974): Haslea wawrikae (Hustedt) Simonsen.
170-10 Navicula perrotettii var. enervis Hustedt Plate 726/1-3
Op 170, p 59, f 1205c.
Holotype:
Nll/29. Hanoi, Tonking. 17-
Marked, unnamed specimens.
Finder: 496-5; 527-2; 559-4 (i-type).
170-11 Navicula halophila var. reducta Hustedt Plate 726/4-6
vp 1./^, p Coj f 1211c.
Holotype:
Nll/87. 0b. Stinker. Burgenland, Osterreich. Le. 6l. 3. •.
Marked, unnamed specimens.
Finder: 253-9; 320.1-4 (i-type?); 345-2; 376.2- 380.6; 436-7; 500.4;
592.1.
170-12 Navicula obtuserostrata Hustedt Plate 727/I-8
Op 170, p 79, f 1219.
Holotype:
N19/29- Kap Wankarema. 2.
Marked specimen named on index sheet.
Finder: 376-5-8 (i-type).
Isotypes:
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007.e-mail pahutaqweirambler.ru
473
N13/71. Kap Wankarema. 1.
Marked specimen named on index sheet.
Finder: 487.1.
Nl1/100. Kap Wankar ema.
Marked specimen named on the label.
Finder: 379-8.
N.B. The central part of the valve is fundamentally different in
structure from what Hustedt observed and illustrated. The holotype has
a number of radially oriented grooves (^rudimentary striae) around the
central nodule which has mislead Hustedt to interpret these as fully
developed striae which is, however, not the case. The striation is that
of Stenoneis inconspicua var. baculus Cleve, the number of striae is 26-
28 in 10 am and not 40, but they are difficult to make out, because they
are very delicate. A combination with the mentioned taxon, at least with
the genus Stenoneis, appears to be justified.
170-13 Navicula pseudocrassirostris Hustedt Plate 727/12-13
Op 170, p 79, f 1220.
Holotype:
199/95- Nordasot. 87 m. A. Norwegen. 3* (Nordasot = misread Nordasvatn)
Marked specimen named "Nav." on index sheet.
Finder: 432-7 (i-type).
Another marked, unnamed specimen is on the following slide:
308/63. Teich bei Eleusis, Athen. b.
Finder: 497-3*
170-14 Navicula subcrassirostris Hustedt Plate 728/1-5
Op 170, p 80, f 1221.
Holotype:
Zt2/34a. Singapore. PI. Ruttner. 2.
Marked specimen named on index sheet.
Finder: 313-1-2 (i-type).
Paratypes, marked specimens named "Nav." on index sheets:
Zt2/48a. Singapore. Hafenplankton. c. 4-
Finder: 588-4-5-
Zt2/49- Singapore. Hafenplankton. c. 6.
Finder: 559-3-6.
170-15 Navicula americana forma lignitica Hustedt Plate 726/7-8
Op 170, p 112, f 1247-
Holotype:
N12/65. Sendai. Lignit. Japan.
Marked specimen named on the label.
Finder: 437-4-7 (i-type).
The cover slip is too thick for high-power oil immersions.
Isotype:

474
N16/15- Sendai, Lignit. Japan. 2.
Marked specimen named on index sheet.
Finder: 431.6-9.
170-16 Navicula completa Hustedt Plate 727/14-17
Op 170, p 118, f 1252.
Holotype:
N12/97. Flufi Vuoksi. 41. Kupersaari. Finnland.
Marked specimens named on the label.
Finder: 6l6.1-4 (i-type f 1252 right); 646.1-4 (i-type f 1252 left).
170-17 Navicula fracta Hustedt Plate 727/9-11
Op 170, p 127, f 1259-
The two specimens depicted by Hustedt are probably from different
localities. Therefore the following is selected as lectotype:
N13/92. Pitkajarvi, 17 m. Harlu, Finnland. b. 1.
Marked specimens named on the label.
Finder: 342.5; 368.6-9; 430-1; 519-3-6 (i-type f 1259 right); 520.5-6;
552.6; 581.5-6.
Isolectotype:
N13/93. Pitkajarvi, 17 m. Harlu, Finnland. b. 2.
Marked specimens named on index sheet.
Finder: 495.1-4; 611.8.
Further slide:
N12/97. Fluft Vuoksi. 41. Kupersaari. Finnland.
Marked specimen named on the label.
Finder: 379-4-5 (i-type f 1259 left?).
170-18 Navicula intractata Hustedt Plate 728/6-9
Op 170, p 136, f 1269.
Holotype:
NI3/46, Vastersjon. II. Schonen.
Marked specimen named on the label.
Finder: 404-8.
170-19 Navicula disjuncta forma anglica Hustedt Plate 728/10-14
Op 170, p 143, f 1275f-h.
Holotype:
N15/87- Dartmoor, Devonshire, Pool. 2.
Marked specimens named "Navicula" on index sheet.
Finder: 437-8; 439-2-5; 466.-5; 468.l; 554-1-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
475
170-20 Navicula impexa Hustedt
Op 170, p 150, f 1282.
Holotype:
NI3/46. Vastersjon. II. Schonen.
Marked and named specimen.
Finder: 431*4.
N.B. Hustedt recorded this taxon under the name Navicula implexa on
the slide label and also on the index sheet. His intention was evidently
to select the adjective impexa (^inornate, i.e. no structural ornamentation
visible), which appears also in the key of the "Kieselalgen". There seems
to be no adjective implexus in the Latin language.
We counted 46 striae in 10 urn in some of our micrographs which the
printing process will perhaps not reproduce. The striae around the central
nodule are slightly radiate with a few shorter ones intercalated. I have
the impression that there is a stigma on one side of the central nodule.
(170-21 Navicula medioconvexa Hustedt)
op 170, p 151, f 1283.
Synonym: Navicula heufleriana var. septentrionalis Hustedt, op 46, p 556,
t 17/4, 1924. See tx 46-4.
Taxon 170-21 is not a "nov. spec." as declared by Hustedt but is a
published variety (tx 46-4) raised to specific rank which also
necessitated the introduction of a new name (= "novus status, novum nomen").
170-22 Navicula egregia forma fennica Hustedt Plate 728/19-20
Op 170, p 155, f 1287c.
Holotype:
N12/97. Fluft Vuoksi. 41. Kupersaari. Finnland.
Marked specimen named on the label.
Finder: 466.3-6.
Op. 171. Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 3, Lief. 2, 161-348, 1962.
(171-1 Navicula damasii Hustedt)
Op 171, p 203, f 1322.
Synonym: Navicula subcontenta var. africana Hustedt, op 122, p 85,
t 4/27-28, 1949- See tx 122-12.
Navicula damasii is not a new species as declared by Hustedt in op
171, but one of Hustedt's varieties (tx 122-12) being raised to species
rank (novus status) and receiving at the same time a new name (novum
nomen).
Plate 728/15-18

476
171-2 Navicula tongatensis Hustedt Plate 728/21-32
Op 171, p 227; f 1345-
There are three slides in. the collection, with identical labels, from the
locality named by Hustedt, nos. 345/57, 58a, and 58b. As lectotype I select
the one cited first. There are no marked specimens of this frequent taxon,
nor does its name appear anywhere:
345/57. Nuku'alofa, Tonga-Ins., aL 9- Well.
171-3.Navicula strenzkei Hustedt Plate 729/1-8
Op 171, p 246, f 1371.
Holotype:
N13/30 (old no. N1230). Wilhelmshaven. Kultur.
The taxon is named on the label and occurs almost purely in masses on the
slide, no specimens are marked.
N.B. We examined this taxon under the scanning electron microscope,
using the type material (no. E 9940. Wilhelmshaven. Kultur, Leitungswasser.
1958. Strenzke). The SEM micrographs show that the two valves of a frustule
differ from one another in that one valve possesses a raphe, whereas the
other lacks it. In addition, the rapheless valves have a lanceolate axial
area which is narrower and more linear in the raphe valves. The valve face
of the latter is generally convex, that of the rapheless valves being
concave. This situation warrants the consequence of generic transfer:
Achnanthes strenzkei (Hustedt) Simonsen, nov. comb., synonym Navicula
strenzkei Hustedt, op 171, p 246, f 1371, 1962.
171-4 Navicula fennica Hustedt Plate 728/33-35
Op 171, p 259, f 1387-
Holotype:
Nel/71 (old no. Ne7l). Suistamonjarvi. 17 m. 6.7-31. Finnland. a.
Marked specimens named on the label.
Finder: 494-1-2 (both specimens in the same circle).
171-5 Navicula iran^asis Hustedt
Op .171, p 262, f 1390A.
There are two slides with marked specimens bearing the taxon's name on
the labels, both with identical label texts except for the mounting medium.
As lectotype I select the Hyrax mount:
NI4/83. Tscheschmeh, Kormouh, Iran. 49-
Finder: 314.8; 404-1-2; 462.4; 496.8.
Isolectotype (an air mount):
NI4/84. Tscheschmeh, Kormouh, Iran. 49-
Finder: 403.6.
Type material:
As 1658. Tscheschmeh. Kormouh. 8.4.6O. Persien. 49- A. Ruttner-Kolisko.
N.B. In LM the valve outline can be made visible in a few cases only,
normally one can only make out the axial rib with the central and terminal
Plate 730/1-8
SCANNED kdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwearambler.ru
4//
nodules coming out more prominently. In the SEM micrographs we see that
the marginal parts of the valves are generally corroded away, leaving only
the axial ribs with the three nodules and part of the valve face. The
radial striation with about 84 striae in 10 urn can be clearly seen. The
most striking feature is the stigma which appears to penetrate the trans-
apical margin of the central nodule.
171-6 Navicula mollissima Hustedt Plate 731/1-4
Op 171, p 263, f 1390B.
Holotype:
341/72. Ig. Acampamento Pedrero. Brasil. 2259-
Marked, unnamed specimens.
Finder: 438-1 (both i-types in the same circle).
N.B. The interference contrast image reveals longitudinal lines
parallel to the margins and at some distance from them. These are not due
to light refraction but indicate differences in structure, perhaps the
limit of striation which would then mean that the striae are very short
and marginal, enclosing a wide axial area.
171-7 Navicula subinflatoides Hustedt Plate 731/5-8
Op 171, p 294, f 1416.
There are two slides bearing the taxon's name on their labels. Since none
of the several marked specimens can be identified with Hustedt's drawings
with certainty, the following is here selected as lectotype:
N14/7- Bulk, 5 m Tiefe. Ostsee. 24.11-54-
Finder: 310.2-5; 339-9; 342-4; 370-3: 551-5-
The other slide:
R2/82. Golf v. Neapel. 100+109- b.
Finder: 383.4.
171-8 Navicula pellucidoides Hustedt Plate 731/9-11
Op 171, P 298, f 1418.
Holotype:
N17/12. Neapel. III. 1.
Marked specimen named on index sheet.
Finder: 379-4 (i-type).
Isotype:
N17/10. Neapel. ill. 3-
Marked specimens named on index sheet.
Finder: 372.2; 646.1.
171-9 Navicula pallida Hustedt Plate 732/1-3
Op 171, p 299, f 1419-
The taxon is marked on four slides, always named on the corresponding
index sheets. Holotype:

478
413/51a. Golf v. Neapel. Pozzuoli. 45 m. Holothuria. 93. b. 3.
Finder: 46O.8 (i-type).
Isotype:
413/49b. Golf v. Neapel. Pozzuoli. 45 m. Holothuria. 93- b. 1.
Finder: 492-3-6.
Paratypes:
413/77b. Golf v. Neapel. Vervece. 50 m. 98. 1.
Finder: 376.5-6.
412/43a. Golf v. Neapel. Bocca Piccola. H. 68. c.
Finder: 591.4.
171-10 Navicula hagelsteinii Hustedt Plate 732/4-5
Op 171, p 301, f 1421.
Holotype:
NIO/85. Beaufort, N.C., U.S.A. Hafen. 31.
Marked specimen named on the label.
Finder: 367.7.
171-11 Navicula grevilleoides Hustedt Plate 732/6-7
Op 171, p 305, f 1424.
There are several slides with marked and named specimens in the collection.
The two specimens illustrated by Hustedt are on two slides of which I
select the following as lectotype:
N13/65. Golf v. Neapel. 100+109- b.
Finder: 463-1-4 (i-type f 1424 left).
Paralectotype:
413/50. Golf v. Neapel. Pozzuoli. 45 m. Holothuria. 93* b. 2.
Finder: 225.2-5 (i-type f 1424 right); 339-5-8.
171-12 Navicula densepunctata Hustedt Plate 732/8
0P 171, -p 308, f 1427.
HoloLype:
413/66a. Golf v. Neapel. Pozzuoli. 45 m- Holothuria. 96. a. 1.
Marked specimen named on index sheet.
Finder: 559-9-
N.B. VanLandingham (Catalogue 5, p 2508, 1975) renamed this taxon:
Navicula pozzuoliensis VanLandingham, because of Nav. densepunctata
(Cleve-Euler) Cleve-Euler.
171-13 Navicula valens Hustedt Plate 733/1-2
Op 171, p 309, f 1428.
Holotype:
N13/66. Golf v. Neapel. Holothuria. Ischia- 109- a.
Marked specimen named on the label.
Finder: 370.1 (i-type).
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwej'rambler.
479
Paratype:
N13/65. Golf v. Neapel. 100+109- b.
Marked specimen named on the label.
Finder: 463.1-4.
171-14 Navicula rhombicula Hustedt Plate 733/3-6
Op 171, p 327, f 1442.
There is quite a number of slides with marked specimens in the collection
which are named on index sheets. Only one slide bears the name on the label
and is here designated as lectotype:
NI3/64. Golf v. Neapel. Holothuria. Ischia. 109- a.
Finder: 342-7; 347-6; 499-2-3; 523-1-4-
Paratype:
413/71a. Golf v. Neapel. Pozzuoli. 45 m. Holothuria. 96. b.
Finder: 339-5-6 (i-type f 1442a and d).
171-15 Navicula plicata forma constricta Hustedt Plate 734/1-3
Op 171, p 329, f H43A.
There are three slides with marked specimens bearing the name "Navicula
plicata f." on their index sheets. Of these I select as lectotype:
202/21. Norwegen. Snigsfjord. 7B. g. 1.
Finder: 461.2-3 (i-type f 1443A right).
Paratypes:
202/13a. Norwegen. Snigsfjord. 7B. a. 1.
Finder: 375-4-
202/l9b. Norwegen. Snigsfjord. 7B. f. 3-
Finder: 312.5-8 (i-type f 1443A left).
171-16 Navicula hyalosirella Hustedt Plate 735/11-13
Op 171, p 335, f 1448.
HoloLype:
NlS/22. Pass-a-Grille. St. Petersburg, Florida, U.S.A. 2214-
Marked, unnamed specimen.
Finder: 496.5-
171-17 Navicula complanatula Hustedt Plate 735/1-10
Op 171, p 338, f 1450.
There are two slides with marked, unnamed specimens in the collection.
The following shall be the lectotype:
N14/5- Charleston, Oregon, U.S.A. 2243-
Finder: 341-5-8; 343-7; 405-7; 465-2-3; 487-1-2; 487-6-9 (i-type f 1450b);
550-9 (i-type f 1450a).
Isolectotype:
Ma3/74- Charleston, Oregon, U.S.A. 2243-
Finder: 224-7; 285-4; 433-1; 523-6; 614-1; 617-7-

480
171-18 Navicula complanatoides Hustedt Plate 734/4-10
Op 171, p 340, f 1451.
We did not succeed in finding any of the illustrated specimens on the
three slides which contain marked specimens. As lectotype is therefore
selected:
N13/60. S.umba. g.
Marked specimens named on the label.
Finder: 435-2; 464.9*
Isolectotype:
287/22b. Soemba. 2.
Marked specimens named "Nav. ahnlich complanata" on index sheet.
Finder: 399*2-5 (several specimens in the same circle).
Further slide:
408/2. Madeira. Westlich Lido. 79-2.
Marked specimen named on index sheet.
Finder: 341.7-8.
Op. 172. Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 3, Lief. 3, 349-556, 1964.
172-1 Navicula explicata Hustedt Plate 736/1-3
Op 172, p 375, f 1464.
Holotype:
N13/80 (old no. N1280). Arafura-See.
Marked specimen named on the label.
Finder: 430-5 (i-type f 1464 a, also of b?).
There are several slides in the collection with marked specimens of this
taxon. Of these one bears the name on the label and contains many
specimens:
Finder: 374-7: 376.. 1 ■ J01..8: A67.8- ^28.1 : 608.1.
172-2 Navicula explicatoides Hustedt Plate 736/4-5
Op 172, p 377, f 1464A.
Holotype:
Ht/46 (old no. H.t.46). Manilla. 38. a. 5-
Marked specimen named on index sheet.
Finder: 519-9-
172-3 Navicula perplexoides Hustedt Plate 736/6-7
Op 172, p 383, f 1470.
Holotype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
481
N12/72 (old no. N1172). Golf v. Neapel. Grund. 108 m. 72. a.
Marked specimen named on the label.
Finder: 469.8-9.
172-4 Navicula rudiformis Hustedt Plate 736/8-10
op 172, p 3S4, f 1471.
Holotype:
NI2/98 (old no. Nil98)- Nordasot, 87 m. A. Norwegen. (correct: Nordasvatn)
Marked specimens named on the label.
Finder: 368.3 (i-type f 1471 left); 552.1 (i-type f 1471 right).
172-5 Navicula crebra Hustedt Plate 737/4
Op 172, p 385, f U72.
Holotype:
N12/73 (old no. N1173)- Golf v. Neapel, an Krabbe. H. 1. 1.
Marked specimen named on the label, the only one found.
Finder: 256.8 (i-type f 1472 left).
172-6 Navicula applicita Hustedt Plate 737/1-3
Op 172, p 386, f 1473a-b.
The two illustrated specimens are on different slides containing different
samples. As lectotype is therefore chosen:
409/22. Madeira. 80. a. Holothuria.
Marked specimen named "Navicula" on the label.
Finder: 439-9 (i-type f 1473a).
Paralectotype:
409/41. Madeira. 82. c. Holothuria.
Marked specimen named "Navicula" on the label.
Finder: 313-9 (i-type f 1473b).
172-7 Navicula applicita forma tenuis Hustedt Plate 737/5-7
Op 179. ti ^87 f 1471c. -■ ■-
Holotype:
408/44- Madeira. Holothuria. 85. c.
Marked specimen named "Nav." on index sheet, an aggregate of three valves.
Finder: 533-2-5-
172-8 Navicula applicitoides Hustedt Plate 737/8-9
Op 172, p 388, f 1473A.
Holotype:
431/7- Insel Tower, Galapagos-Gruppe. Tropischer Pacific. Marine Grund-
probe. leg. H. Hass 1954-
A strewn slide mounted by Anke Elger, doughter of Albert Elger. The
specimen is marked, unnamed.
Finder: 433-8.

482
172-9 Navicula lyrella Hustedt Plate 738/1-5
Op 172, p 389, f 1474.
Hoiotype:
N13/55 (old no. N1255). Funafuti. Sudsee. 2.
Marked specimen named on the label.
Finder: 555-4 (i-type f 1474 leftmost).
Isotype:
Zt5/40. Funafuti. Sudsee. 2.
Marked specimens named on index sheet.
Finder: 286.4-5 (i-type f 1474 second from right);
380.4 (i-type f 1474 rightmost).
Further specimen:
N17/85. Manilla. 38. a. 2.
Marked specimen named "Nav." on index sheet.
Finder: 465-9 (i-type f 1474 second from left).
I72-IO Navicula hennedyoides Hustedt Plate 738/6-7
Op 172, p 396, f 1479.
Holotype:
N3/81 (old no. N28l). Victoria, Brasilien.
A single mount named on the label (i-type f 1479a).
There are two more slides with marked, unnamed specimens, isotypes:
295/20b. Victoria, Brasilien.
Finder: 134-5.
295/21. Victoria, Brasilien.
Finder: 224-9 (i-type f 1479b).
172-11 Navicula miranda Hustedt Plate 739/1
Op 172, p 397, f 1480.
Holotype:
N15/53 (old no. NI453). Campeche. Bay. 63.a. 75-
Marked specimen named on the label.
Finder: 468.1-2. """'
172-12 Navicula illustris var. neapolitana Hustedt Plate 739/2-3
Op 172, p 402, f 1483.
Holotype:
N13/6 (old no. N1206). Golf v. Neapel. 100+109- b.
Marked specimen named on the label.
Finder: 500.9.
Isotype:
N12/11. Golf v. Neapel. 100+109- b.
Marked specimen named on the label.
Finder: 523-4-
Paratype:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
483
N14/10. Golf v. Neapel. La Gaiola. 70 m. 45-
Marked specimen named on the label.■
Finder: 642.3-
172-13 Navicula variolata forma intermedia Hustedt Plate 739/4-5
Op 172, p 405, f 1484d.
Holotype:
N8/88. Oamaru.
A single mount with the taxon's name on the label.
172-14 Navicula novaeseelandiae Hustedt Plate 740/1-4
Op 172, p 406, f i486.
Holotype:
N14/13 (old no. N1313)- Detroit de Foveaux, Neuseeland. 1.
Marked specimens named on the label.
Finder: 254-5-8 (i-type f i486 left); 642.6; 646.8 (i-type f i486 lower).
Isotypes:
N14/14. Detroit de Foveaux, Neuseeland. 2.
Marked specimens named on the label.
Finder: 461.7-8; 465-7-8; 590.4-7 (i-type f i486 right).
N14/15* Detroit de Foveaux, Neuseeland. 3-
Marked specimens named on the label.
Finder: 374-4-5; 442.4-7; 554-7-
N14/82. Detroit de Foveaux, Neuseeland. 4*
Marked specimens named on index sheet.
Finder: 518.8; 586.7; 704-1-4-
172-15 Navicula semiapproxioata Hustedt Plate 741/l-4
Op 172, p 423, f I497a-c.
The taxon's name appears on the index sheets of two slides with marked
specimens of which I designate as lectotype:
Zt3/83. Campech^-Bai. 68. b. 3.--— - — - ■■ - --'-
Finder: 531-5 (i-type f 1497c).
Isolectotype:
Zt3/91- Campeche Bay. 66. c. 3-
Finder: 443-7 (the i-type f 1497b, lying just outside the circle, as
indicated by Hustedt).
172-16 Navicula semiapproximata forma constricta Hustedt Plate 741/S
Op 172, p 425, f 1497d-e.
Holotype:
N14/H (old no. N1311). Golf v. Pensacola. 34a.
Marked specimen named on the label, the only one found.
Finder: 348.8 (i-type f 1497e).

484
172-17 Navicula approximatoides Hustedt Plate 742/1-3
Op 172, p 426, f 1498.
As lectotype is here designated:
Zt3/88. Campeche Bay. 66. c. 1.
Marked specimen named on index sheet.
Finder: 342.3-6 (i-type f 1498 centre).
Isolectotypes:
Zt3/89. Campeche Bay. 66. c. 2.
Marked specimen named on index sheet.
Finder: 413-6-9-
Zt3/73. Campeche Bay. 67. 1.
Marked specimen named on index sheet.
Finder: 375-1-2 (i-type f 1498 left).
172-18 Navicula approximately Hustedt Plate 743/1-5
Op 172, p 428, f I500a-c.
Holotype:
N3/96 (old no. N296). Galapagos Ins.
A single mount with the taxon's name on the label.
There is quite a number of slides with marked (always unnamed) specimens
of this taxon, including those illustrated. Since Hustedt mounted his
single mounts always in Styrax, he generally preferred Hyrax slides for
drawing and photographs because of the more brilliant images. Here are
the Isotypes:
N14/98. Galapagos-Inseln. 12. Zt6/l6. Galapagos-Inseln. 7-
Finder: 516.3 (i-type f 1500b). Finder: 641.1-4-
N14/99- Galapagos-Inseln. 5- Zt6/l9- Galapagos-Inseln. 11.
Finder: 502.8; 531-1-2. Finder: 290.4 (i-type f 1500a).
Zt6/l0. Galapagos-Inseln. 1. Zt6/25- Galapagos-Inseln. 20.
Finder: 254.9; 314-4- Finder: 339-9 (i-type f 1500c).
Zt6/ll. Galapagos-Inseln. 2.
Finder: 492.9.
172-19 Navicula approximatella forma glabra Hustedt Plate 743/6
Op 172, p 429^ f I500d.
Holotype:
Zt6/l6, Galapagos-Inseln. 7-
Marked specimen named on index sheet.
Finder: 618-4-7-
172-20 Navicula implana Hustedt Plate 744/1-4
Op 172, p 429, f 1501.
There are several slides, all with marked specimens, in the collection.
Only the one from Campeche Bay names the taxon on the index sheet. However,
the illustrated specimens are from Galapagos material, and there are more
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqwej'rambler.
485
specimens available from there helping to obtain an idea of the taxon's
variability. Therefore I select as lectotype:
N14/99- Galapagos-Inseln. 5-
Finder: 257-8-9 (i-type f 1501, right).
Isolectotypes:
Zt6/l0. Galapagos-Inseln. 1.
Finder: 374-4 (i-type f 1501, left); 531-3-6.
Zt6/ll. Galapagos-Inseln. 2.
Finder: 490.1; 485-9-
Further specimen:
Zt3/89- Campeche Bay. 66. c. 2.
Finder: 473-2-3-
(172-21 Navicula irroratoides Hustedt)
Op 172, p 437, f 1506a-b.
This species does not represent a new systematic entity as is claimed by
Hustedt, because it is based on existing taxa.
172-22 Navicula irroratoides forma elliptica Hustedt Plate 741/6-7
Op 172, p 439, f 1506c, e-f.
There are three slides with marked specimens, all named on the relevant
index sheets. The following is selected as lectotype:
N14/40. Pensacola, Florida. 1.
Finder: 561.4; 590.9; 640.4-7 (i-type f 1506f).
Isolectotypes:
N14/41. Pensacola, Florida. 2.
Finder: 440-5-8; 529-1-4; 583-5-8 (i-type f 1506c).-
N14/42. Pensacola, Florida. 3.
Finder: 459-1-4 (i-type f 1506e).
172-23 Navicula subirroratoides Hustedt Piatt; 742/4-6
Op 172V p 442, f 1508.
Holotype:
N14/13 (old no. N1313). Detroit de Foveaux, Neuseeland. 1.
Marked specimens named on the label.
Finder: 410.4; 470.7-8.
Isotypes:
N14/14- Detroit de Foveaux, Neuseeland. 2.
Marked specimen named on the label.
Finder: 528.2.
108/91. Detroit de Foveaux, Neuseeland.
Marked, unnamed specimens.
Finder: 405-2-5; 436-2; 490.4 (i-type f 1508, right).

486
IO8/89. Detroit de Foveaux, Neuseeland.
Marked, unnamed specimens.
Finder: 436-9; 520.4; 556-9-
172-24 Navicula clavata forma subconstricta Hustedt Plate 744/8
Op 172, p 445, f 1509d-e.
Holotype:
N14/98 (old no. 1398). Galapagos-Inseln. 12.
Marked specimen named on index sheet (not illustrated in op 172).
Finder: 526.1.
Isotypes (selection):
N14/99- Galapagos-Inselii. 5*
Marked specimens named on index sheet.
Finder: 344-7-8; 462-4-5 (i-type f 1509d); 550.4-5-
Zt6/l0. Galapagos-Inseln. 1.
Marked, unnamed specimen.
Finder: 430-9-
Zt6/ll. Galapagos-Inseln. 2.
Marked specimen named on index sheet.
Finder: 677-2-5.
172-25 Navicula hennedyi var. bacillifera forma longesulcata Hustedt
Plate 745/1-2
op 172, p 461, f 1523.
Holotype:
N14/50 (old no. N1350). Bory. 1.1.
Marked specimen named on the label.
Finder: 587-9 (i-type f 1523, lower right).
Isotypes:
N14/51. Bory. 2. 2.
Marked specimens named on the label.
Finder: 344.5-8 (i-type f 1523, upper right); 461.6-9-
N14/52." Bory. 2. 1.
Marked specimens named on index'sheet.
Finder: 498.3 (i-type f 1523, left); 524-5-6.
172-26 Navicula hennedyella Hustedt Plate 746/1-2
Op 172, p 467, f 1526.
This species is only recorded as "Nav. 4" on the index sheets, the taxon's
name appears nowhere. As lectotype is designated:
N14/98. Galapagos-Inseln. 12.
Finder: 251.9 (i-type f 1526 left).
Isolectotypes:
Zt6/l9. Galapagos-Inseln. 11. Zt6/21. Galapagos-Inseln. 13-
Finder: 339-4 (i-type f 1526 right). Finder: 613-2-5-
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
487
172-27 Navicula aestimata Hustedt Plate 744/5-7
op 172, p 470, f 1529.
Holotype:
345/10. Ovalau, an Algen. 1. a.
Marked specimen named on index sheet.
Finder: 351-7-8 (i-type f 1529 left).
Isotype:
N17/57. Ovalau. 1. Siidsee.
Marked, unnamed specimen.
Finder: 550.3-
172-28 Navicula impcxcepta Hustedt Plate 746/3-5
Op 172, p 471, f 1530.
There are several slides with marked specimens, all named on the
corresponding index sheets. Hustedt designated as holotype:
N14/98 (old no. N1398). Galapagos-Inseln. 12.
Finder: 308-5-8; 433-6 (i-type f 1530 left); 436-5 (i-type f 1530 right);
440.8-9; 489-4-7; 498.7.
Isotypes:
N14/99- Galapagos-Inseln. 5-
Finder: 494-4; 58l.3; 585-1; 586.5-8; 616.3-6, 585-5-
Zt6/l0. Galapagos-Inseln. 1.
Finder: 436.1; 491.7-8; 525-7-8.
Zt6/l3- Galapagos-Inseln. 4.
Finder: 584.8.
Zt6/l9- Galapagos-Inseln. 11.
Finder: 434.1-4-
172-29. Navicula spectabilis var. splendida Hustedt Plate 747/1-3
Op 172, p 480, f 1537.
Holotype:
N7/97 (old no. N697). Mejillcnes.
A single mount named on the label.
Further slide:
N14/49. Redondo, Calif.
Marked specimen named on the label.
Finder: 341-5-8 (i-type f 1537)-
172-30 Navicula spectabilis var. bacillifera Hustedt Plate 748/1-2
Op 172, p 481, f 1538.
The type number given by Hustedt (N1346; new number NI4/46) is incorrect,
the indicated slide is from Bory and does not contain the taxon in
question. Of the two slides containing marked specimens, both named on
the labels, I select here as lectotype:

488
N14/48 (old no. N1348). Borostelek.
Finder: 551-9 (i-type f 1538 left).
Further slide:
N14/51 (old no. N1351). Bory. 2. 2.
Finder: 438.1 (i-type f 1538 right).
(172-31 Navicula signatula Hustedt)
Op 172, p 491, f 1543-
This is not a new taxon as pointed out by Hustedt ("nov. spec.")., but is
based upon a known and published systematic entity, viz. Navicula lyra
var. signata A. Schmidt. The correct indication would have been "novus
status, novum nomen".
172-32 Navicula discreta Hustedt Plate 749/1-2
Op .172, p 496, f 1546.
Holotype:
N14/S (old no. N1308). Balearen. 1. 2.
Marked specimen named on the label.
Finder: 532-5-
172-33 Navicula lyroides forma constricta Hustedt Plate 747/4
Op 172, p 499, f 1547b.
Holotype:
N14/59. Bory. 2. 2.
Marked specimen named on the label.
Finder: 492.2.
172-34 Navicula disclusa Hustedt Plate 745/3-7
Op 172, p 514, f 1556.
Holotype:
NJ7/88. NorH-Celebes. 1.
Marked specimens named on the label.
Finder: 252.7 (i-type f 1556 right); 318.7; 404-5-8; 457-9; 489-7 (i-type
f 1556 left).
172-35 Navicula abruptoides Hustedt Plate 750/1-2
Op 172, p 515, f 1557.
Holotype:
N12/93 (old no. N1193). Cebu. Philippinen. d.
Marked specimen named on the label.
Finder: 472-9 (i-type f 1557 left).
There are several slides in the collection, with marked and named specimens,
all from localities other than the type locality. Of these I cite here
only one because it is the only one with the taxon's name on the label:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
489
N12/94 (old no. Nil94)- Java. Aus Holothuria. 27.
Finder: 223-2-5 (i-type f 1557, second from left).
172-36 Navicula fundata Hustedt Plate 748/3-6
Op 172, p 520, f 1560.
Holotype:
N14/55 (old no. N1355). Campeche-Bai.
Marked specimens named on the label.
Finder: 315-2 (i-type f I56O, second from left); 317-8 (i-type f 1560
left); 378-9 (i-type f 1560, second from right).
Isotype:
2t3/84- Campeche-Bai.
Marked specimens named on index sheet.
Finder: 314-4; 582.7-8.
172-37 Navicula disposita Hustedt Plate 746/6-7
Op 172, p 521, f 1561.
Holotype:
N17/7b. Golf v. Neapel. Vervece. 50 m. 99. 2.
Marked specimen named on index sheet.
Finder: 405-9.
172-38 Navicula majuscula Hustedt Plate 750/3-7
Op 172, p 522, f 1562.
Holotype:
N14/98 (old no. N1398). Galapagos-Inseln. 12.
Marked specimens named on index sheet.
Finder: 408.7 (i-type f 1562, second from left); 463-8; 498-7 (i-type
f 1562, second from right).
Isotypes, marked specimens named on index sheets:
N14/99- Galapagos-Inseln. 5-
Finder: 405-9; 526.5-8.
Zt6/ll. Galapagos-Inseln. 2.
Finder: 553-3; 614-3 (i-type f 1562, right).
Zt6/l2. Galapagos-Inseln. 3-
Finder: 258.3-6 (i-type f 1562, centre).
Zt6/l6. Galapagos-Inseln. 7-
Finder: 615-7-8.
172-39 Navicula majusculoides Hustedt Plate 751/1
Op 172, p 524, f 1563.
Holotype:
Zt6/l6. Galapagos-Inseln. 7-
Marked specimen named on index sheet.
Finder: 405-7-

490
172-40 Navicula bifurcatula Hustedt Plate 749/3-7
Op 172, p 525, f 1564.
Holotype:
N15/53 (old no. N1453)- Campeche Bay. 63. a. 75.
Marked specimen named on the label.
Finder: 471-8-9 (i-type f 1564, leftmost).
Isotype:
2t3/53- Campeche Bay. 63- a.
Marked specimens named on the label.
Finder: 255-4-7 (i-type f 1564, rightmost); 409-9: 468.9 (i-type f 1564,
second left).
172-41 Navicula applanata Hustedt Plate 751/13-17
op 172, p 526, f 1565.
Of the many slides containing marked and named (on index sheets) specimens,
I select the following as lectotype:
Zt3/99. Campeche Bay. 63a.
Finder: 282.6 (i-type f 1565 left).
Isolectotypes:
Zt3/74. Campeche Bay. 63a. Zt3/66. Campeche Bay. 63a.
Finder: 527.7 (i-type f 1565 centre). Finder: 256.4; 346.2-5.
Zt3/72. Campeche Bay. 63a. Zt3/67- Campeche Bay. 63a.
Finder: 344-4; 434-2-3- Finder: 560.7.
Zt3/63- Campeche Bay. 63a.
Finder: 282.8-9.
172-42 Navicula subforcipata Hustedt Plate 751/2-7
Op 172, p 533, f 1569.
Holotype:
N12/96 (old no. N1196). Norwegen. Snigsfjord. 7B. b.
Marked specimens named on index sheet.
Finder: 345-3; 347-8-9; 527-2-3-
Isotype:
202/13b. Norwegen. Snigsfjord. 7B. b. 1.
Finder: 434-1-
172-43 Navicula nyella Hustedt ' Plate 751/18-19
Op 172, p 535, f 1571-
Holotype:
Zt2/36. Singapore. PI. Ruttner. 4-
Marked specimen named on index sheet.
Finder: 348.7-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
491
172-44 Navicula veterans Hustedt Plate 751/8-12
Op 172, p 541, f 1578.
Two slides contain marked specimens named on index sheets. As lectotype
is here chosen:
N17/29. Rumanien. 4-
Finder: 563-5; 617-1; 674-6-9-
Isolectotype:
N17/28. Rumanien. 3.
Finder: 407-1-4-
172-45 Navicula schaeferae Hustedt Plate 751/20-22
Op 172, p 545, f 1583 ("schaeferi").
Holotype:
N13/4 (old no. N1204)- Wangeroog. 19. Graben. d.
Marked specimens named on the label.
Finder: 489-2; 489-3-6.
N.B. The gender of the specific epithet is incorrect. Since the taxon
is dedicated to a lady, the epithet should read "schaeferae" and not
"schaeferi" as Hustedt did.
Along the raphe there is actually not a row of areolae as illustrated
and described by Hustedt. The taxon does therefore not belong in the
section Lyratae of the genus Navicula.
172-46 Navicula sparsistriata Hustedt Plate 751/23
Op 172, p 547, f 1585.
Holotype:
N17/5"b. Golf v, Neapel. Trentaremi. Hoiothuria. 76. b. 1.
Marked specimen named on index sheet.
Finder: 466.4-7-
Op. 173- Neue und wenig bekannte uiaTomeen. IX. Int. Revue ges. Hydrobioi.
50, 391-410, 1965.
173-1 Actinella gessneri Hustedt Plate 752/1-7
Op 173, p 392, f 1-6.
Two slides with marked, unnamed specimens were found. The species is rather
frequent on the Rio Arapiuns slides, for which reason Hustedt found it
evidently unnecessary to mark his specimens. As lectotype is selected:
340/la. Rio Arapiuns. Brasilien. S. 171-
Finder: 404-5-6; at position 617-7 the i-type f 2.
The other slide:
34l/7a. Igarape 11.9 km vor Pirabas. Brasilien. S. 182.
Finder: 583-2 (i-type f 5?)-

492
173-2 Actinella siolii Hustedt Plate 752/8-10
Op 173, p 392, f 7-10.
It was impossible to locate the i-types of this species. It is frequent
on the following slide which is therefore designated as lectotype (the
circles quoted are probably made to mark other taxa but are, nevertheless,
cited here):
318/40. Lago Jurucui. Campos-Graser. Brasilien. 254a.
Finder: 400.3; 404-1-2; 673-6.
173-3 Eunotia baculus Hustedt Plate 753/1-5
Op 173, p 394, f 19-20.
There are several slides with marked and named specimens, from very
different localities, in the collection. Among these the following is here taken
as lectotype:
322/20a. Igarape Grande. Brasilien. 211. a. 2.
Marked specimens named on index sheet.
Finder: 466.8-9; 581.9.
173-4 Eunotia stricta Hustedt Plate 753/6-7
Op 173, p 395, f 25-
Holotype:
L5/2. Rio Erereri-Tal. Brasilien. S. 84.
Marked specimen named on the label.
Finder: 317-9-
173-5 Pinnularia rostratissijna Hustedt Plate 754/1
Op 173, p 397, f 26.
Holotype:
P5/16. Rio Tapajoz. PI. Brasilien. 5-12.56. G.
Marked specimen named on the label.
Finder: 374-4-
173-6 Pinnularia rostratissima forma subundulata Hustedt Plate 754/2
Op 173, p 397, f 27.
Holotype:
P5/17- Rio Tapajoz. PI. Brasilien. 5.12.56. G.
Marked specimen named on the label.
Finder: 582.4-7.
173-7 Pinnularia elongatoides Hustedt Plate 754/3
Op 173, p 397, f 28-29.
None of the illustrated specimens could be found. As lectotype is here
designated:
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
493
318/34. Lago Jurucui. Siidufer. Ast. Brasilien. 253- 1.
Marked specimens named on index sheet.
Finder: 350-7-8; 375-7-
Further slides:
318/1. Lago Jurucui. Plankt. 13.11.47- Brasilien. 58. 2.
Marked specimen named on index sheet.
Finder: 436.7-
318/5. Lago Jurucui. Plankt. 27.11.47. Brasilien. 60.
Marked, unnamed specimen.
Finder: 379.6-9.
N.B. The specific epithet is occupied by another species described
by Cholnoky (Nova Hedwigia 2, p 108, I960). Hustedt had evidently realized
this-already, because in the reprint he presented to me he had corrected
the name by hand to read Pinnularia subelongatoides. This was never
formally published, however. I therefore introduce here Hustedt's new name:
Pinnularia subelongatoides Hustedt in litt., nov. nomen, synonym Pinnularia
elongatoides Hustedt, op 173, p 397, 1965-
173-8 Pinnularia elongatoides forma linearis Hustedt Plate 754/4-5
Op 173, p 397, f 30-
Holotype:
318/4O.'Lago Jurucui. Campos-Graser. Brasilien. 254a.
Marked, unnamed specimen.
Finder: 4OO.6.
N.B. In consequence of the introduction of a new name to the nominate
forma (see the preceding tx 173-7), this taxon has to be recombined:
Pinnularia subelongatoides forma linearis (Hustedt) Simonsen, nov. comb.,
basionyra Pinnularia elongatoides forma linearis Hustedt, op 173, P 397,
1965.
173-9 Pinnularia amoena Hustedt Plate 755/1-2
Op 173, p 399, f 31.
Holotype:
XI0/68. Lago Jurucui. Plankt. 13-11-47. Brasilien. 58. 1.
Marked specimen named on index sheet.
Finder: 530.6 (i-type f 31).
Paratype:
318/5. Lago Jurucui. Plankt. 27.11.47- Brasilien. 60.
Marked, unnamed specimen.
Finder: 346-7-
173-10 Pinnularia dactyloides Hustedt Plate 755/3-5
Op 173, P 400, f 32-33-
Holotype:
3l8/l. Lago Jurucui. Plankt. 13.11-47- Brasilien. 58. 2.
Marked specimens named on index sheet.
Finder: 406.2-3 (i-type f 32); 614-7 (i-type f 33)-

494
Paratype:
318/24. Lago Jurucui, an Pflanzen. 252. 2. Brasilien.
Marked specimen named on index sheet.
Finder: 287-3.
173-11 Gomphonema gibberum Hustedt Plate 753/8-13
Op 173, P 400, f 35-39-
We found marked specimens of this taxon on three slides, but it is named
on one slide only, on the label; this slide is here chosen as lectotype:
S3/16. Rio Tapajoz. PI. Brasilien. 5.12.56. Ge.
Finder: 559-4-7 (i-type f 36).
The other slides with unnamed marked specimens:
318/23. Lago Jurucui, an Pflanzen. 252. Brasilien.
Finder: 433-9 (i-type f 38); 462.9.
323/69a. Itatiaia Gebirge. Moos. +1000 m. Brasilien. S. 3. 2.
Finder: 559-3 (i-type f 35).
173-12 Gomphonema sphaerophoroides Hustedt Plate 756/1-2
Op 173, P 401, f 40-42.
Holotype:
X8/79- Rio Tapajoz. Brasilien. 5.12.56. Ge. 3.
Marked specimen named on index sheet, the only specimen found.
Finder: 373-7 (i-type f 40?).
173-13 Gomphonema graciloides Hustedt Plate 756/3-6
Op 173, P 401, f 43-44-
Marked - unnamed - specimens were found on two slides. Of these the
following is designated as lectotype:
323/68. Itatiaia Gebirge. Moos. +1000 m. Brasilien. S. 3- 1.
Finder: 496-7-8; 646.3 (i-type f 44)-
Xsolectotyne:
323/69a. Itatiaia Gebirge. Moos. +1000 m. Brasilien, S. 3. 2.
Finder: 616.6 (i-type f 43).
173-14 Gomphonema adductum Hustedt Plate 756/7-12
Op 173, P 402, f 50-54-
Four slides were found with marked specimens, all unnamed. As lectotype
is here proposed:
323/68. Itatiaia Gebirge. Moos. +1000 m. Brasilien. S. 3. 1.
Finder: 289.1 (i-type f 54); 317-3-6 (i-type f 51)- 524.1-4 (i-type f 52);
612.4 (i-type f 50).
Isolectotype:
323/69b. Itatiaia Gebirge. Moos. +1000 m. Brasilien. S. 3. 3.
Finder: 622.2.
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
495
Further slides:
S3/17. Rio Tapajoz. PI. Brasilien. 5.12-56. G.
Finder: 404-6 (i-type f 53).
321/54- Rio Tapajoz. Brasilien. 293- 1.
Finder: 515-5-7-
173-15 Gomphonema agnitum Hustedt Plate 754/6-10
Op 173, P 403, f 45-49-
We found marked - unnamed - specimens on four slides. The following is
here selected as lectotype:
32l/50a. Rio Tapajoz. Brasilien. 291a. 2.
Finder: 557-6 (i-type f 47); 649-4 (i-type f 46).
Isolectotype:
321/49. Rio Tapajoz. Brasilien. 291a. 1.
Finder: 491.9-
Further slides:
321/54. Rio Tapajoz. Brasilien. 293. 1.
Finder: 457-7; 486.8-9-
323/68. Itatiaia Gebirge. Moos. +1000 m. Brasilien. S. 3. 1.
Finder: 487-6-9 (i-type f 45).
173-16 Surirella splendidoides Hustedt Plate 757/4-5
Op 173, P 403, f 55.
Hustedt's typification ("X677, 678") is not valid, because it applies to
two different slides from two different localities. To this is to be added
the fact that the specimen illustrated by him is from a third locality.
I have here chosen to select the iconotype as the lectotype:
X8/79 (old no. X779). Rio Tapajoz. Brasilien. 5-12.56. Ge. 3.
Marked specimen named on index sheet.
Finder: 408.2-5 (i-type f 55).
Further slides:
X7/78 (eld no. X678) Igarape do Garrafao. Brasilien.
A slide with picked specimens of this taxon.
X7/77 (old no. X677). Rio Capim, Brasilien. PI. S. 179-
The taxon is not marked, it is frequent on the slide. Name on the label.
173-17 Surirella siolii Hustedt Plate 757/3
Op 173, p 405, f 56.
There is only one slide in the collection with this taxon's name on the
label, but there are no specimens marked of this rather frequent species.
Holotype:
X7/77 (old no. X677), Rio Capim. Brasilien. PI. S. 179.
The photographed specimen is at finder position 554-9-

496
173-18 Surirella pumila Hustedt Plate 755/6-11
Op 173, P 405, f 57-61.
Two slides contain marked specimens named on index sheets. As lectotype
is here designated:
341/4b. Rio Capim. Brasilien. PI. S. 179- 2.
Finder: 373-1 (i-type f 60); 402.1-4 (i-type f 6l); 464-4; 550.6 (i-type
f 59).
Isolectotype:
34l/4a. Rio Capim. Brasilien. PI. S. 179- 1.
Finder: 370-5-8; 346.4; 320-5-8.
The latter two circles are said to mark Surirella investiens Hustedt
(tx 173-19), but only S. pumila was found in these.
173-19 Surirella investiens Hustedt Plates 757/1-2, 758/1-8
Op 173, p 406, f 62-65.
Holotype:
X7/77 (old no. X677)- Rio Capim. PI. S. 179-
Marked specimens named on the label.
Finder: 435-9; 582.5 (i-type f 62?); 614.6-9 (i-type f 63).
Isotypes:
341/4a. Rio Capim. Brasilien. PI. S. 179- 1.
Marked specimens named on index sheet.
Finder: 367-9 (i-type f 64); 525-2.
There are two more circles allegedly marking this taxon, but those
specimens are Surirella pumila Hustedt (tx 173-18).
341/4b. Rio Capim. Brasilien. PI. S. 179- 2.
Marked specimens named on index sheet.
Finder: 379-1-2; 529-4 (i-type f 65); 549-6; 587.9-
The first and the last two specimens are smaller (24-27 urn) than given
in the description.
173-20 Surirella braunii Hustedt Plate 759/1-4
Op 173/p 406, f 66.
Holotype:
X8/82. Rio Tapajos. PI. Brasilien. 5.12.56. Ge.
Marked specimen named on the label.
Finder: 401.1-4 (i-type f 66).
Further marked and named specimens:
X7/73- Rio Arapiuns. Brasilien. S. 171- 4-
Finder: 525-7-8.
X9/90. Rio Arapiuns. Brasilien. 171a. 2.
Finder: 519-4-7; 549-4-5-
173-21 Surirella grossestriata Hustedt Plate 759/5-8
Op 173, P 407, f 67-
Holotype:
BY pAhUTA yURI, Kiev-2007,e-mail pahutaqi
497
X7/74 (old no. X674). Rio Arapiuns. Brasilien. S. 171. 2.
Marked specimens named on the label.
Finder: 347-3 (i-type f 67); 372-3; 430.4-7; 436-9; 460.7.
Isotypes:
X7/72. Rio Arapiuns. Brasilien. S. 171- 5-
Marked specimens named on the label.
Finder: 288.7; 369-4; 375-3-6; 462.2; 494-6; 614.4.
X7/73- Rio Arapiuns. Brasilien. S. 171- 4-
Marked specimen named on the label.
Finder: 403-2-3-
340/4a. Rio Arapiuns. Brasilien. S. 171- 1-
Marked specimen named on index sheet.
Finder: 374-5-
N.B. The magnification of Hustedt's fig 67 is incorrect, the i-type
is 39-5 urn long and not 45-
173-22 Melosira gessneri Hustedt Plate 759/9-12
Op 173, p 408, f 68.
Holotype:
A3/33 (old no. A233). Rio Tapajoz. Brasilien. 5.12.56. Ge.
The species name is on the label, no specimen of this frequent taxon is
marked.
N.B. According to our more recent systematic understanding of the genus
.Melosira C.A. Agardh, partly discussed by Simonsen (Bacillaria 2, p 15,
1979), this taxon belongs in the genus Aulacoseira Thwaites:
Aulacoseira gessneri (Hustedt) Simonsen, nov. comb. Synonym: Melosira
gessneri Hustedt, op 173, p 408, 1965.
Op. 175- Die Kieselalgen Deutschlands, Osterreichs und der Schweiz. Dr.
L. Rabenhorsts Kryptogamenflora von Deutschland, Osterreich und der
Schweiz, Band 7, Teil 3, Lief. 4, 557-816, 1966.
175-1 Navicula monita Hustedt Plate 760/1-5
Op 175, p 590, f 1595-
Holotype:
N9/46 (old no. N846). Igarape do Garaffao. Brasilien.
Marked specimens named on the label.
Finder: 378.7-8; 439-6.
Isotype:
329/18. Igarape do Garaffao. Brasil. Sioli 112. .1.
Marked specimens named on index sheet.
Finder: 250.9; 346.9; 377-8; 462.7.
N.B. Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 72,
1985) recombines this taxon: Navicula goeppertiana var. monita (Hustedt)
Lange-Bertalot.

498
175-2 Navicula mitigata Hustedt Plate 760/6-H
Op 175, P 591, f 1596.
Holotype:
Nll/68 (old no. N1068). Hac. San Antonio, Sonsonate 12. b. El Salvador.
Marked specimens named on the label.
Finder: 401-4-7 (i-type f 1596); 401.6; 465-3; 467-4-7; 472.1; 520.6.
175-3 Navicula dismutica Hustedt Plate 760/12-16
Op 175, p 595, f l600.
Holotype:
N10/34 Cold no. N934)- Ferschbach, Stubachtal, Tirol.
Marked specimens named on the label; the taxon is abundant.
Finder: 254-6-9; 344-7 (i-type f 1600, second from left).
Isotype:
N5/86. Ferschbach, Moos. Stubachtal.
The taxon's name is on the label, no marked specimens.
N.B. Lange-Bertalot (in Krammer & Lange-Bertalot, Naviculaceae, p 98,
1985) recorabines this taxon: Navicula suecorum var. dismutica (Hustedt)
Lange-Bertalot.
175-4 Navicula plausibilis Hustedt Plate 76l/l-5
Op 175, p 602, f 1606.
Of the three slides containing marked - unnamed - specimens of this taxon
I select as lectotype:
209/65. Franz Josephs Land. Eismeer.
A strewn slide mounted by E. Thum, his no. 410.1.
Finder: 373-4 (i-type f 1606 left).
Isolectotypes:
209/63- Franz Josephs Land. Eismeer.
Another Thum slide, no. 410.1.
Finder: 284-2; 343-1-4; 373-9; 468.8; 497-4-7 (2 specimens); 555-4-5;
555-6; 586.i~4.
209/64. Franz Josephs Land. Eismeer.
A further slide mounted by Thum, his no. 410.2.
Finder: 255-5-6; 287.8; 401-3-6; 583-5-6.
175-5 Navicula dapaliformis Hustedt Plate 761/6-9
Op 175, p 605, f 1608.
Three slides contain marked specimens named on the labels. Holotype:
N15/66 (old no. N1466). Bengalen. 8.
Finder: 255-8 (i-type f 1608 left); 56O.7 (i-type f I608 centre).
Isotypes:
N15/67. Bengalen. 8. N15/68. Bengalen. 8.
Finder: 589-8-9- Finder: 286.9-
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
499
N.B. Lange-Bertalot (in Krammer &. Lange-Bertalot, Naviculaceae, p 72,
1985) recombines this taxon: Navicula goeppertiana var. dapaliformis
(Hustedt) Lange-Bertalot.
175-6 Navicula palaearctica Hustedt Plate 762/I-6
Op 175, P 613, f 1613-
Marked, unnamed, specimens exist on two slides of which the following
is selected as lectotype:
209/64. Franz Josephs Land. Eismeer.
A Thum slide, his no. 410.2.
Finder: 257-4-5 (i-type f 1613 centre); 315-5-6; 409-5; 434-5-8.
IsolecLOtype:
209/65. Franz Josephs Land. Eismeer.
Thum slide no. 410.1.
Finder: 462.8.
175-7 Navicula incoacta Hustedt Plate 762/7-10
Op 175, p 619, f 1617.
Holotype:
N15/59- Negra, Peru, an Moos. 2. Loffler.
Marked specimens named on the label.
Finder: 375-8-9; 399-8-9 (2 specimens); 408.1; 434-5-6; 557.4; 678.1-4-
175-8 Navicula destitutoides Hustedt Plate 762/11-12
op 175, p 633, f 1631.
We found only one specimen that can be compared with Hustedt's illustration
although the ends are more cuneate. This specimen is marked, but unnamed,
and is, on my opinion, the holotype:
429/10. Norwegen. 4- T. Asevag, 26 m. c.
Finder: 219.9.
175 9 Navicula cxplcrata Hustedt Plate 763/1-3
Op 175, p 635, f 1633-
Holotype:
N16/8. Baikalsee. Olhon Gate. 1.
Marked specimen named on the label.
Finder: 523.2 (i-type f l633a + b).
Isotype:
N16/10. Baikalsee. Olhon Gate. 33 m.
Marked specimens named on the label.
Finder: 285-3; 322.7; 377.8; 500.5-
175-10 Navicula aspersa Hustedt Plate 761/10-12
Op 175, p 636, f 1634.

500
Holotype:
N14/59- Campeche Bai. 63.
Marked specimen named "Navicula" on the label.
Finder: 433.1.
175-H Navicula breviata Hustedt Plate 763/4-6
Op 175, P 637, f 1635.
No marked specimen agreeing with Hustedt's description and illustrations
could be located. One unmarked specimen on a slide with the type material
does agree with it, however, so that this is here designated as lectotype:
287/22a. Soemba. 1.
Finder position of this unmarked specimen: 308.6.
(175-12 Navicula solutepunctata Hustedt)
Op 175, p 646, f 1647.
This taxon was described, also as nov. spec, but without illustration,
in op 102, p 638, 1939* There, in the footnote on p 638, Hustedt remarks
that the illustrations were erroneously omitted, they were to appear "soon"
in the "Kieselalgen". See taxon 102-36. In op 175 Hustedt does not refer
at all to this earlier publication, the descriptions in both publications
are litterally identical.
175-13 Navicula cluthensoides Hustedt Plate 763/7-11
Op 175, p 654, f 1654-
Holotype:
N14/98 Cold no. N1398). Galapagos-Inseln. 12.
Marked specimens named on index sheet.
Finder: 380.2-3; 460.6 (i-type f 1654 left); 488.7; 553-8 (i-type f
1654 centre).
Isotypes, marked specimens named on index sheets:
N14/99. Galapagos-Inseln. 5-
tj--;„_j_„. Ar\n o <-
XI1/39. Galapagos Inseln. 8. Eugenie-Exp.
Finder-: 524-7-
N.B. There remains a slight "suspicion" that these valves (no frustules
were observed) represent raphe valves of a Cocconeis species.
175-14 Navicula biddulphioides Hustedt Plate 762/13-14
Op 175, p 656, f 1656.
Holotype:
N14/99 (old no. N1399). Galapagos-Inseln. 5.
Marked specimen named on index sheet.
Finder: 523-5-
N.B. Hendey (Nova Hedwigia 22, p 393, 1971) pointed to the fact that
this taxon is conspecific with Cocconeis gibbocalyx Brun.
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
175-15 Navicula laevimarginata Hustedt
Op 175, P 657, f 1657-
Holotype:
N14/15 (old no. N1315)- Detroit de Foveaux, Neuseeland. 3.
Marked specimens named on index sheet.
Finder: 253.2 (i-type f 1657b); 429-2 (i-type f 1657a).
Isotype:
N14/13- Detroit de Foveaux, Neuseeland. 1.
Marked specimen named on index sheet.
Finder: 430.7-8.
175-16 Navicula columbiana Hustedt Plate 764/5-9
op 175, p 665, f 1665.
Holotype:
N14/32 (old no. N1332). Columbia River, Oregon. U.S.A. 145e.
Marked specimens named on the label.
Finder: 440.5-8; 619-7-
Isotypes:
N14/93- Columbia River. Oregon. 1.
Marked specimens named on index sheet.
Finder: 377-3; 493-5-8.
N14/94. Columbia River. Oregon.
A single mount with name on the label.
175-17 Navicula agnita Hustedt Plate 766/1-2
Op 175, p 668, f 1668.
Holotype:
NI4/96 (old no. N1396). Miang Besar. Borneo, a.
Marked specimen named on the label.
Finder: 436.1-2.
N.B. Because of Navicula agnita Hustedt (op 148, p 27; see tx 148-40),
this taxon has to be renamed:
Navicula biagnita Simonsen, nov. nomen, synonym Navicula agnita Hustedt,
op 175, p 668, 1966.
175-18 Navicula meridiepacifica Hustedt Plate 765/1-4
Op 175, p 669, f 1669-
Holotype:
N13/17 (old no. N1217)- Chile, aus Echiurus. a.
Marked specimen named on the label.
Finder: 413-1-4-
Isotypes:
N15/50. Chile, aus Echiurus. b.
Marked specimens named on the label.
Finder: 383-8-9; 415-2-5-
501
Plate 764/1-4

502
N15/72. Chile aus Echiurus. a.
Marked specimen named as "forma" on the label.
Finder: 437-9 (i-type f l66<?b).
175-19 Navicula electa Hustedt Plate 765/5-6
Op 175, P 670, f 1670.
Holotype:
N15/30. Ssetanai. Japan. 21.
Marked specimen named on the label.
Finder: 464-5-
175-20 Navicula disparilis Hustedt Plate 767/1-2
Op 175, p 674, f 1674-
Holotype:
3l6/5a. Rio Jaguari-mirim. Pflanzen, Litoral. Brasilien (Sen. 3) 1-
Marked specimen named on index sheet.
Finder: 530.4-
175-21 Navicula demeraroides Hustedt Plate 766/3-5
Op 175, P 676, f 1677-
Of the two slides cited by Hustedt as "type" I select as lectotype:
N2/54 (old no. N154)« Demerara River.
Marked specimen named on the label.
Finder: 4H-7 (i-type f 1677).
Isolectotype:
N2/55 (old no. Nl55)- Demerara River.
Marked specimen named on the label.
Finder: 617-3-
175-22 Navicula groveoides Hustedt Plate 767/5-7
Op 175, P 686, f 1685.
There are three slides with marked and named specimens. Of these the
following shall be the lectotype:
N15/15. Saigon river, r.m. 18075. sx III '31-
A slide with picked specimens mounted by M. Voigt, on an additional label
the taxon's name written by Simonsen, when he photographed the specimen
for Friedrich Hustedt to be included in op 175•
Finder: 462.4-5 (i-type f 1685).
Further specimens:
N14/80. Saigon River. Cochinchina. 1.
Marked specimen named on the label.
Finder: 281.8-9-
N14/81. Saigon River. Cochinchina. 4*
Marked specimen named on the label.
Finder: 585-2-3-
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwei'rambl<
503
175-23 Navicula deltoides Hustedt Plate 768/1-6
Op 175, p 689, f 1687-
Holotype:
N15/52 (old no. N1452). Nicobaren. 44- a.
Marked specimens named on the label.
Finder: 469-1 (i-type f 1687 left); 500.4 (i-type f 1687 right).
IsotypeSj marked specimens named on index sheets:
291/22. Nikobaren. 1.
Finder: 343-5; 344-1; 376.6; 399-1; 523-4-
291/23. Nikobaren. 2.
Finder: 284-4-7; 408-3-
291/27. Nikobaren. 7-
Finder: 370.8.
175-24 Navicula maculata forma undulata Hustedt Plate 768/7-8
Op 175, P 705, f l698d.
No marked or named specimen could be located. As lectotype is designated:
N5/52. Leetes Island Bay, Conn.
The taxon is rather frequent, the label bears the species name only.
Isolectotype:
N5/51. No. 2. 3feet Pool. Leetes Island.
This is a slide mounted by Wm. A. Terry of Boston.
N.B. The examination of a number of specimens shows that only the
largest valves of this species tend to produce undulate margins which are
never found in the smaller ones.
175-25 Navicula intermixta Hustedt Plate 767/3-4
Op 175, P 724, f 1705.
Holotype:
N17/71. Kamerun. Lagune. i. b. 4.
Marked specimen named on the label.
Finder: 6l6.7-8.
175-26 Navicula conjuncta Hustedt Plate 769/1-7
op 175, p 732, f 1709.
Holotype:
N14/82 (old no. N1382). Detroit de Foveaux, Neuseeland. 4-
Marked specimens named on index sheet.
Finder: 283*5-8 (i-type f 1709b); 437-2-5; 738.1-4-
Isotypes:
N14/14- Detroit de Foveaux, Neuseeland. 2.
Marked specimen named on index sheet.
Finder: 584-7-8 (i-type f 1709a).

504
N14/15- Detroit de Foveaux, Neuseeland. 3-
Marked specimen named on index sheet.
Finder: 315-8 (i-type f 1709c).
N.B. VanLandingham (Catalogue 5, p 2477, 1975) classified this taxon
as "questionable" ("fraglich!"), probably because of the very poor
rendition of the illustrations which is here due more to the printer than to
the photographer.
175-27 Navicula borneoensis Hustedt Plate 766/6
Op 175, p 735, f 1712.
Holotype:
N15/51 (old no. N1451)- Miang Besar. Borneo. 4.
The type slide number given by Hustedt - N1450 - is incorrect, slide no.
N15/50 (old no N1450) contains material from Chile.
Marked specimen named on the label.
Finder: 491-5.
175-28 Navicula okunoi Hustedt Plate 763/12
Op 175, p 740, f 1718.
The type specimen (on slide N15A) had a position very close to the margin
of the cover glass. The mountant had disintegrated due to insufficient
cleaning from immersion oil. The specimen was therefore invisible. I am
distressed to have to announce that our trials with re-embedding,
successful on other occasions, have failed this time, and the type specimen is
lost. The original holotype slide was:
N15/1 (old no. N1401). Setana. Japan. 60. b.
175-29 Navicula homburgiana Hustedt Plate 770/1-3
Op 175, p 753, f 1729A.
Holotype:
N3/24 (old no. N224). Homburg a. d. Ohm. 1.
Marked specimen named on the label.
Finder: .403.8.
175-30 Navicula bellissima Hustedt
Op 175, p 756, f 1731.
Holotype:
Zt3/93- Campeche Bay. 67.
Marked specimen named on the label.
Finder: 401-7-
175-31 Navicula oregonensis Hustedt
Op 175, p 757, f 1732.
Holotype:
Plate 769/14-15
Plate 771/1
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
505
N15/43. Columbia River. Oregon. U.S.A. 145- e.
Marked specimen named on the label.
Finder: 399-5-
175-32 Navicula gruendleri var. angusta Hustedt Plate 771/2-4
Op 175, p 759 (no illustration).
Holotype:
N14/60 (old no. NI36O). Campeche Bay. 67.
Marked specimen named on the label.
Finder: 497-6.
N.B. This taxon is here illustrated for the first time and therefore
becomes valid now.
175-33 Navicula truncatula Hustedt Plate 771/5-6
Op 175, P 766, f 1739-
Holotype:
N15/5 (old no. N1405). Setana. Japan. 60. b. 3.
Marked specimen named on the label.
Finder: 495-4-
N.B. VanLandingham (Catalogue 5, p 2859, 1975) considered this taxon
as questionable because of the poor rendition of the illustration.
175-34 Navicula obtuseprotracta Hustedt Plate 772/5-7
Op 175, p 767, f 1740.
Holotype:
N14/31. Columbia River. Oregon. U.S.A. 145d.
Marked specimen named on the label.
Finder: 403-7-8.
175-35. Navicula annexa Hustedt _ Plate 769/H-I3
Op 175, p 771, f 1743-
Holotype:
N15/42. Rumanien. 2.
Marked specimen named on the label.
Finder: 526.4-7-
175-36 Navicula pseudobrehmii Hustedt Plate 769/8-IO
Op 175, p 782, f 1757-
Holotype:
P2/73 (old no. P173). Demerara River. 86. c.
Marked specimen named on the label.
Finder: 376.1-2.
N.B. One of the two valves possesses a stigma in the central nodule.

506
175-37 Navicula aggesta Hustedt Plate 770/4-7
Op 175, p 808, f 1780.
Holotype:
N15/3 (old no. N1403). Ssetanai, Japan. 17.
Marked specimen named on the label.
Finder: 313-3-
Isotypes:
N15/4- Ssetanai, Japan. 60. 3-
Marked specimen named on the label.
Finder: 587.6.
N15/6. Ssetanai, Japan. 10.
Marked specimen named on index sheet.
Finder: 581-3 (i-type f 1780 right).
N15/l8. Setana. Japan. 60. b.
Marked specimen named on index sheet.
Finder: 492.5*
N15/29. Ssetanai, Japan. 16.
Marked specimens named on index sheet.
Finder: 280.15 290.2.
175-38 Navicula addicta Hustedt Plates 771/7-8, 772/1-4
Op 175, p 809, f 1781-
Holotype:
N15/1 (old no. N1401). Setana. Japan. 60. b.
Marked specimen named on index sheet.
Finder: 343-8-9-
Isotype:
N15/6. Ssetanai, Japan. 10.
Marked specimens named on index sheet.
Finder: 315-2 (i-type f 178lb); 528.3 (i-type f 178la).
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
507
Index
Page numbers without sign indicate the regular entries of Hustedt's taxa.
Sometimes there are two such numbers, because the same taxon was described
twice or because two different taxa were published under the same name.
Page numbers with asterisk signify taxa which are discussed within a
regular entry. Page numbers with a degree sign indicate new taxa/names/
combinations introduced here.
Achnanthes
altaica 228-
amoena 385
amphicephala 249
arcus 229
arguta 230
atacamae 104
atomus 211
austriaca 69
v. helvetica 133
bicapitata 384
biceps 455
biconfusa 212*
brevipes
v. tumida 104
campechiana 386
chllensis 104
clevei
v. balcanica 325
f. rostrata 326
v. rostrata 116
coarctata
v. sinaensis 351
cognita 342°
congolensis 340
conspicua
v. brevistriata 116
crassa 211
crenulata
v, constricta 213
delicatula 149*
v. robusta 149
ssp. hauckiana 325*
d-idyma 135
diluviana 399
dispar
v. angulata 117
v. rumaniensis 204
exigua
v. capitata 148
v. constricta 54
v. elliptica 212
v. heterovalvata
148*
exiguiformis 337
fimbriata 134*
(Achnanthes)
fonticola 325
frigida 227
gessneri 394
gibberula 352*
gibbosa 254
gracillima 101
grimmei 352*
v. hyalina 352
grubei 71°
hauckiana
f. lancettula 231
hedinii 62
heterostriata 385
holsatica 204
holstii 128*
ignota 385-"- 453
jakovljevicii 326
kolbei 117
kreijcii 228
kryophila
v. densestriata 149
v. protracta 227
lacunarum 117
v. fonticola 228
lanceolata 47* 358*
v. bimaculata 358
v. robusta 212
v. rostrata 20
v. ventricosa 47
lapidosa
v. lanceolata 134
lapponica 85*
lata 229
laterostrata 134
lauenburgiana 358
lemmermannii 133
v. obtusa 254
levanderi 135
v. helvetica 135
linkei 253
lutheri 136
maculata 212
magnifica 384
manguinii 384
marina 231
(Achnanthes)
meisteri 231
minuscula 325
minutissima
v. jackii
211-"- 248* 249*
v. macrocephala 211
v. robusta 210
modica 385
montana
v. tropica 228
neoskvortzowii 453°
norvegica 128
oculata 386
f. rostrata 386
oestrupii
v. lanceolata 231
oriental!s 134
pamirensis 62
petersenii 205
pinnata 62
v. japonica 101
plitvicensis 326
ploenensis ll6
procera 326
pseudohexagona 386
pseudolanceolata 384
pseudolinearis 271
punctifera 407
pyrenaica 248
quadratarea 85*
radiosa 204
recurvata 228
rossii 396
salvadoriana 393
semiaperta 326
separata 452
similis I78
simplex 178*
skvortzowii 453
solea 257* 385 453*
speciosa 105
strenzkei 476°
stroemii 134
subatomoides 199*
subatomus 248

508
(Achnanthes)
subexigua 149
subhudsonis 54
sublaevis 205 227*
submarina 435
subrostrata 302
subsalsoides 135
suchlandtii 136 440*
v. robusta 455
tenera 407
tenuis 406 407*
tenuissima 211
tenuistriata 229
thienemannii 302
triconfusa 134*
trigibba 230
tropica 212
valida 232
wellsiae 385*
woldstedtii 399
woltereckii 230
Actinella
eunotioides 374
gessneri 491
peronioides 374
robusta 374
siolii 492
tasmaniensis 374
Actinocyclus
beaufortianus 401*
distinguendus 433
helveticus 381*
tropicus 433
Actinoptychus
taeniatus 402
Amphipleura
campechiana 202
Amphiprora
cholnokyi 121*
costata 121
hustedtii 121*
similis 418
splendida 456
subcostata 455
Amphora
amoena 419
antarctica 449
beaufortiana 419
bella 420
(Amphora)
chilensis 105
elegantula 420
fontinalis 234
genigulata 66
holsatica 92
minima 420
montana 345""
ostenfeldii 66
proteoides 418
rugosa 234
schroederi 55
strigosa 352
subangularis 419
subcuneata 419
sublaevis 420
submontana 345
subrobusta 105
subturgida 235
tenerrima 366
tenuissima 419
thermal is 34-4
towutensis 280
tumida 437
Anaulus
americanus 402
Anomoeoneis
longirostris 272
rhomboides 272
serians
f. undulata 462
v. acuta 214
styriaca 86*
v. ventricosa 71"""
sellensis
f. diffi nil i <! 69*
v. linearis 69
Anorthoneis
humraii 405
hyalina 404
tenuis 252"- 405
Aulacodiscus
australiensis 464
distinguendus 453
excavatus
v. robusta 324
impressus 454
insignis 323
jucundus 454
minimus 454
subexcavatus 324
Aulacoseira
agassizii
v. malayensis 269"""
canadensis 381
distans
v. helvetica 310°
gessneri 497°
granulata
v. valida 176*
f. curvata 177*
longispina 307"""
v. tenuis 307*
Auliscr^
compactus 323
pruinosus 323"""
similis 323
tenuistriatus 322
Biddulphia
rostrata 250
Caloneis
aequatorialis 54
v. capitata 54
amphicephala 223
v. rostrata 224
bacillum
f. inflata 344
branderi 463*
desertorum 352
heterocostata 176
hyalina 224
incognita 19
ladogensis
v. densestriata 117
latiuscula
v. subholstii 69
macedonica 334.
malayensis 278
minima 416
pseudoschumanniana 44°
schroederi 72
schumanniana
v. fasciata 90
v. lancettula 118
v. linearis 20
v. rostrata 278
silicula
f. claviceps 334
f. intermedia 278
f. minutissima 224
v. peisonis 118
v. tenuis 47
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
(Caloneis)
silicula
v. truncatula
f. constricta 306
v. tumida 18
speciosa 44"""
visurgis 455
Campylodiscus
levanderi 91
papillosus 302
tariganicae 310
Chaetoceros
compressus
v. gracilis 61
denticulatus
f. angusta S3
f. lata 53
frickei 6l
hamatus 60
muelleri 92*
pseudocrinitus
v. tropica 6l
reicheltii 6l
similoides 434
thienemannii 92
Climacosphenia
truncata 50
Cocconeis
brevicostata 203 210
cataractarum 203 210
cingulata 271
curiosa 448
diruptoides 133
disculoides 406
exigua
v. constricta 54""
feuerbornii 204 210
fraudulens 412°
gibbocalyx 500*
grata 253*
guttata 367
latecostata 405
peltoides 253
pseudograta 252
pulcherrima 387
quadrat are a 85"""
semiaperta 325
sovereignii 406
tenuis 252 405*
thienemannii 395
utermoehlii 396
Coscinodiscus
beaufortianus 401*
eccentricus
v. fasciculata 113
pseudodenticulatus 447
pseudomarginatus 183
ritscheri 447
Cosmiodiscus
beaufortianus 401
Cyclotella
areolata 177
atomus 207
bituminosa 382
delicatula 381
distinguenda 101 324*
elgeri 38I
fottii 307
helvetica 381*
lacunarum 6l
lucens 250°
nana 439
ocellata 62*
operculata
v. unipunctata 70
plitvicensis 324
pseudostelligera 250
stelligera
v. hyalina 177
v. robusta 177
v. tenuis 207
stelligeroides 325
styriaca 308
tenuistriata 381
tibetana 62
woltereckii 270
Cymatopleura
calcarata 110
elliptica
v. constricta
f. lata 24
kinkeri 24*
solea
v. angusta 91
Cymbella
aequalis
f. undulata 128
alpinoides 130
ampullacea 284
angustissima 429
bicapitata 284
braunii 429
509
(Cymbella)
brehmii 24
cesatii
f. undulata 282
cistula
v. gracilis 430
v. convexa 430
cryptocephala 282
decipiens 389* 429
delicatissima 235
descripta 311*
designata 305*
disposita 431
distinguenda 287
fonticola 236
formosa 428
gibberula 320
gracillima 285
grossestriata
v. javanica 130
helvetica
v. punctata 70 r
hybridiformis 335
inducta 431
javanica 236
juriljii 428
kolbei 352
laterostrata 431
leptoceroides 283
leptoceros
v. rostrata 304
magna 431
malayensis 283
f. rostrata 284
mendosa 281*
f. apiculata 281*
f. brevistriata 28l*
microcephala 131*
f. robusta 249
minutissima 21
mirabilis 287
monticola 353
muelleri
v. javanica 130*
naviculoides 345
neoprocera 132*
oahuensis 282
ornata 131
palustris 236
placentula 130
praerupta 430
procera 131
. pseudodelicatula 283
rugosa 432
ruttneri 131

510
(Cymbella)
ruttneri
v. obtusa 235
schubartii 429
similis 335*
sinuata 22*
v. ovata 70
spicula 236
subalpina 280
f. apiculata 281
f. brevicostata 28l
v. dubia 281
subturgida 131
sumatrensis 236
tasmaniensis 432
tenuissima 282
thienemannii 235
tibetana 66
triangulum
v. gracilis 131
tumida
v. gracilis 132
vasta 430
wallaceana 285
woltereckii 286
v. capitata 286
Cymbellonitzschia
diluviana 359
minima 90
Delphineis
minutissima 252°
Den'ticula
amphicephala 179
v. simplex l8o
bacillum 290
bicuneata 238
cuslata 179
elegans
v. africana 394
elongata 239
lanceolata 180
lata 239
linearis 290
parva 289 290*
pelagica l8l
v. intermedia I8l
rhynchocephala 179
v. tenuis 179
robusta 180
v. dubia 180* 239
seriata 105
spathulifera 238
(Denticula)
vanheurckii
f. ventricosa 239
v. angusta 240
v. obtusa 240
v. subrobusta 240
v. trigona 180
Diatoma
sinuatum 105
Diatomella
minuta 193
Dicladiopsis
perlonga 18 5 ""
Dimerogramma
acutum 403
hyalinum 403
rostratum 403
Diploneis
aestuarii 254
crabro
v. excavata 226
dimorpha 455
fusca
v. amphigomphus 226
incurvata
f. stricta 225
v. dubia 225
marginestriata 70
minima 435
modica 326
oestrupii 227
papula
v. constricta 226
petersenii 226
pseudobombiformis 227
pseudovalis 118
pulcherrima 213
sejuncta
f. constricta 226
smithii
v. chilensis 105
stroemii 225
subadvena 226
suborbicularis
v. constricta 225
vetula
v. americana 408
Epithemia
sorex
v. gracilis 70
v. lapponica 305
zebra
v. denticuloides l8l
Eucocconeis
lapponica 85
Eunotia
aequalis 42
arctica 205
v. simplex 205
arcus
v. fallax 114
asterionelloides 376
baculus 492
bidentula 41*
v. elongata 40
bigibba
f. elongata 310
biseriata 379
bisulcata 379
braunii 377
chilensis 42
clavata 40
claviceps 31
compacta 40
conversa 375
convexa 377
f. impressa 378
copiosa 376
curvula 375
damasii 339
denticulata
v. fennica 133
didyma
f. genulna 24*
v. clavicuiala 30
v. curta 31
v. elegantula 30
v. inflata 39
v. maxima 30
v. media 30
v. recta 30
v. recurvata 146
v. tuberosa 29
dissimilis I48
distinguenda 426
epithemioides 37
exigua
v. bidens 115
v. compacta 115
v. gibba 209
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
(Eunotia)
fallax
v. aequalis 210
fastigiata 148
formica 18*
v. elongata 18
v. sumatrana 177
frickei 37
v. elongata 38
geniculata 29
gibbosa
v. gracilis 23*
v. paraguayensis 23
globosa 29
hinziae 34°
v. diodon 34°
incurvata 40
inscita 379
lata 146
levistriata 148
longissima 376
luna
v. aequalis 35
v. elongata 35
v. globosa 35
v. intermedia 34
v. trapesica 35
major
v. curta 18
meisteri 116
v. bidens 116
monodon
v. constricta 35
v. major 18*
v. tropica 101*
v. undulata 35
montana 339
muelleri 32
nymanniana 115"*
obtusa 378
oestrupii 147
papilio
f. minor 84
paucistriata 146
praerupta
v. thermalis 146
prolongata 38■
v. simplex 38
pseudoflexuosa 340
pseudopectinalis 85
pseudoveneris 270
pyramidata 33 34*
v. depressa 33
rabenhorstii
v. africana 339
(Eunotia)
rabenhorstii
v. africana
f. triodon 340
v. maxima 31
recta 38
recurvata 146*
reflexa 31
f. minor 31
reicheltii 33
v. bidens 34
v. triodon 34
rhomboidea 361
rhynchocephala 205
v. undulata 205
robusta
v. tetraodon 47*
f. abrupta 47
rostellata 39
sendaiensis 147
septentrionalis
v. bidens 92
serrata 24
similis 147
sinuosa 377
siolii 379
stricta 492
subaequalis 147
submonodon 39
subrobusta 32
subtaeniata 383
f. simplex 383
sudetica
v. bidens 42
sulcata 147
synedraeformis 375
v. angusta 375
taeniata 383
tauntoniensis 41
tenella
f. undulata 340
tenuis 41
tenuivalva 41°
thienemannii 210
thumii 42
trigibba 32
■'v. abrupta 33
trinacria
v. undulata 115
tropica 101
truncata 41
valida 115
vasta 378
zygodon
v. compacta 36
(Eunotia)
zygodon
v. curta 36
v. depressa 36
v. elongata 37
v. emarginata 36
v. gracilis 37
v. lata 36
Eunotogramma
dubium 251
rostratum 402
Euodia
udiensis 263
Flexibiddulphia 263°
semicircularis 263°
udiensis 2630
Fragilaria
africana 339
asiatica 62
atomus 129
braunii 382
constricta
f. stricta 114*
f. trinodis 129
construens
v. binodis
f. gibba .338
v. javanica 270
v. subsalina 92
densestriata 208
fonticola 207
v. angusta 208
v. sinaica 353
gessneri 434
harrisonii
v. sinuata 105
inflatissima 382
javanica 208
lapponica
f. lanceolata 270
longissima 45
obtusa 434
oldenburgiana 454
robusta 44
siolii 383
spinulifera 106
sublineata 45
undata
v. quadrata 114
virescens
v. elliptica 44 47

512
Fragilariopsis 45
ritscheri 446 449
separanda 447 450
Frustulia
creuzburgensis 272*
hawaiensis 272
javanica 203 214
linkei 387
rhomboides
v. elliptica 213
v. saxonica
f. undulata 117
rostrata 214
sirailis 399
splendida 202 214
styriaca
v. subrostrata 86
v. ventricosa 71
submarina 203
vulgaris
v. elliptica 214
weinholdii 203
Gomphocymbella
ancyli 43*
gracilis 129
ruttneri 42
Gomphonerna
abbreviatum
f. inflata 393
acuminatum
f. malayensis 287
adductum 494
aequatoriale 345
agnitum 495
angustatum
f. curta 206*
v. linearis 122
angustissimum 288
clevei
v. javanica 237
curtum 335
gibberum 494
graciloides 494
grovei
v. lingulatum
104- 237*
hedinii 66
intermedium 289
irroratum 335
javan.icura 237
lingulatum 103
v. constricta 237
(Gomphonerna)
longiceps
v. subclavata
f. gracilis 122
longissimum 288
macedonicum 335
malayense 287
minutum 335*
olivaceoides 122-"- 359
olivaceum
v. fonticola 336
v. minutissima
122 359*
punctatum 238
sphaerophoroides 494
subtile
v. malayensis 289
subtiliforme 288
subventricosum 237
tackei 306
tenerrinrum 238
towutense 287
undulatum 179
vastum 103
woltereckii 2S8
Gyrosigma
beaufortianum 417
fonticolum 234
hummii 417
parvulum 417
procerum 437
subangusturn 417
Hantzschia
amphioxys
v. africana 56
v. compacta 66
v. distinctepunctata
56
v. gracilis 56
v. major
f. capitata 56
v. obtusa 73
v. rupestris
f. capitellata 57
f. rostellata 57
v. stricta 73
distinctepunctata 56*
fenestrata 353
hermannii 241
mirabilis 241
pseudomarina 73
robusta 73
sigma 241
(Hantzschia)
virgata
v. capitellata 74
v. gracilis 72
Haslea
crucigeroides 471*
crystallina 471*
gigantea 471*
wawrikae 472*
Hemiaulus
elgeri 185
Hemidiscus
rotundus
f. gibbosa 264
Hydrosera
triquetra
v. hexagona 207
Hydrosirella 369
robusta 369
Licmophora
onassis 372
Licmosphenia
taylorii 129
Mastogloia
achnanthioide s
v. elliptica 140
acutiuscula
v. elliptica 141
angusta 140
asperuloides 137
atacamae 106
baculus 144
beaufortiana 407
biapiculata 113
borneensis 113
campechiana 138
cor sic ana 94*
decipiens 139
delicatissima 137 139"-
densestriata 140
depressa 144
dissimilis 138
elegantula 144
emarginata 94
exilis 144
frickei 143
gigantea 139
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
(Mastogloia)
gomphonemoides 145
gracilis 140
gracillima 407
graciloides 140
horvathiana 95'""
ignorata 139
impressa 144
kjellmanii 111-"- 112*
labuensis
v. lanceolata 142
lata 139
laterostrata 141
malayensis 272
mediterranea 145
meisteri 143
minima 138
minuta 141*
multicostata 143
oblonga 141
ovulum 136
parva 141
patrickae 408
pseudoelegans 407
pseudoparadoxa 142
punctifera 139"""
pusilla
v. subcapitata 145
recta 271
regula 140
rigida 143
robusta 142
similis 142
smithii 139*
splendidula 136
staurophora 141
strigilis 143
subacuta 142
subaffinis 138
subaffirmata 113
v. angusta 142
subaspera 137
sublatericia 137
subminuta 94
subrobusta 271
tenera 139
tenuis 145
tenuissima 137
tropica 111
varians 138
vasta 144
Melosira
agassizii
v. malayensis 269
(Melosira)
canadensis 381
cataractarum 207
distans
v. helvetica 310
gessneri 497
granulata
v. angustissima
f. cur vat a 109*
f. curvata vel
spiralis 109
v. valida 176
f. curvata 176
hummii 401
longispina 307
v. tenuis 307
pulchella 38O
robusta 38O
ruttneri 206
similis 269
spinifera 106
Micropodiscus
weissflogii 100*
Navicula
abiskoensis 304
aboensis 198*
abruptoides 488
abscondita 255
absoluta 175* 361
abstrusa 255
abunda 413
accedens 400
acceptata 359
accomoda 3^5
accurata 365
acutirostris 316
acutissima 171
adamata 391
addicta 506
admissa 414
adnata 187 221
aequorea 256 416*
aestimata 487
africana 19
aggesta 506
agnita 412 501
agrestis l8b 218
aleemii 367
americana
f. lignitica 473
amphipleuroides 415
amplectens 172
amygdalina 198
(Navicula)
ancisa 395
anglica
v. signata 319
angustissima 171
annexa 505
antediluviana 428
applanata 490
applicita 481
f. tenuis 481
applicitoides 481
apposita 400
approximata 409*
f. elongata 409
approximatella 484
f. glabra 484
approximatoides 484
apta 413
arata 312*
areolata 391
argutula 427
arvensis 186 219
arvensoides 330
aspersa 499
atacamae 106
atasensis I960
atomus 266*
v. permitis 331*
v. recondita 172*
augustissima 171*
auriculata 314
bachmannii 470
bacilliformis
v. cruciata 49
bacilloides 332
bacillum
f. lanceolata 166*
v. intermedia 166
balcanica 170
barbarica 343
bastowii 412
beaufortiana 416
bella I89 218
be His sima 504
biagnita 501°
bicapitellata 91
bicephala 388
biddulphioides 500
bifurcatula 490
biskanterae 256
borneoensis 504
brachium 314
brehmii 102
brehmioides 391

514
(Navicula)
brekkaensis
v. bigibba 191 2l8
bremensis 442
bremeyeri 256
v. rostrata 256
breviata 500
brevirostrata 196
brevissima 187 223
britannica 367
brockmannii 149 331*
bryophila
v. lapponica 303
buderi 401
caduca 266
carminata 166
carniolensis 333
cataractarum 428
certa 332
charlattii
f. simplex 427
v. chilensis 427
cinctaeformis 196 221
cingulata 194
damans 257
clavata
f. subconstricta 486
clementioides 318
cluthensoides 500
cocconeiformis 397*
f. elliptica 397
columbiana 501
complanatoides 480
complanatula 479
completa 474
commutabilis 315
f. lanceolata 315
concamerata 200 223
concinna 317
congolensis 342
conjuncta 503
consentanea 257
constans 318
v. symmetrica 442
conveniens 390
crebra 481
crucigeroides 471
cryptocephala
v. subsalina 92
v. veneta 92*
cryptocephaloides
198 221
cryptolyra 416*
crystallina 471
curiosa 411
(Navicula)
curta 187 222
cuspidata 365*
cymbelloides 167
damasii 341-" 475
dapaliformis 498
declivis 150
decussis 317* 319*
v. subdecussis 277*
defluens 316
deliberata 166*
delicatissima 169
deltoides 503
^emeraroides 502
demissa 329
densa 318
densepunctata 478
densestriata 71
denticuloides 168
descripta 311
destitutoides 499
destricta 266
detenta 176*
dicephala
v. chilensis 106
diengensis 187*
difficillima 362
difficillimoides 440
digitoradiata 258*
f. linearis 257
v. elliptica 23
v. rostrata 257
digitulus 311
digna 440
dilucida 258
diploneiformis 449
diploneoides 194
disclusa 488
discreta 488
diserta 258
disjuncta 119
f. anglica 474
dismutica 498
disparata 275
disparili-s 502
dispersepunctata 392
dispersepunctulata
392*
disposita 489
dissipata 194 314*
divaricata 276
diversipunctata 315
diversistriata 413
dubitanda 470
(Navicula)
duerrenbergiana
162 46O*
egregia 266
f. fennica 475
elaborata 173
electa 502
elegantoides 277
emendata 164
entoleia 194*
enucleata 331
evanida 267
exigua
f. undulata 276
v. elliptica 107
v. signata 319
exiguiformis
317 319* 334
f. capitata 317
f. elliptica 343
f. undulata 343
exiguoides 428
exilissima
v. dubia 397
explanata 338 \^_
explicata 48O
explicatoides 480
explorata 499
faceta 342
farta 166
fauta 400
fenestrella 414
fennica 476
feuerbornii 195 222
finitima 342
flagellifera 258
fluens 119
fluviatilis 440
fossalis 150*
v. obsidialis 268*
fossaloides 441
fracta 474
fragilarioides 106*
frugalis 441
frustulum 331
fundata 489
gallica 106*
gastriformis 170 178
gastrum
v. signata 170* 196
geitleri 173
genustriata 278
gibbosa 192 220
gibbula
f. undulata 305 306
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007, e-mail pahutaqwe'i'rambler. ru
(Navicula)
gigantea 471
globulifera 102
v. robusta 201 221
glabriuscula 195
goeppertiana 202*
v. dapaliformis 499*
v. monita 497*
gradata 193 222
gratissima 316
grevilleoides 478
grimmei 91*
v. rostellata
201 217
groschopfii 258
grossepunctata 313
groveoides 502
gruendleri
v. angusta 505
habita 389
hagelsteinii 478
halophila 107* 401*
f. minor 107
f. robusta 459
f. tenuirostris
216* 273
v. reducta 472
halophilioides 46O
hambergii 86 173*
harder! 354 355*
hedinii 65
helensis 119* 197*
helvetica
v. woltereckii 164*
f. rostrata 276
hennedyella 486
hennedyi
v. bacillifera
f. longesulcata 486
hennedyoides 482
heufleriana
v. septentrionalis
85 475*
hoefieri 19*
homburgiana 504
hustedtii
v. japonica 175
v. obtusa 175
hummii 409
hyalosirella 479
ignota
v. acceptata 359*
illustris
v. neapolitana 482
ilopangensis 435
impercepta 487
(Navicula)
impexa 475
implana 484
importuna 267
inclinata 329
incoacta 499
incognita
v. capitata 220
indifferens 267
ingenua 443
insequens 412
inserata 426
v. undulata 426
insignita 277
insociabilis
v. dissipatoides 443
Integra 21
v. truncata 21
interglacialis 319
intermixta 503
intractata 474
invicta 193 220
iranensis 476
irroratoides 485
f. elliptica 485
jaernefeltii 198
jakovljevicii 334
jugifera 200
justa 416
kotschyi
f. undulata 119
v. robusta 125
krasskei 120
kuripanensis 197 222
kwamkujii 55
lacustris 21*
v. paulseniana 427*
laevimarginata 501
laevissima
v. perhibita 360*
lagerheimii
v. intermedia 125
lagerstedtii
v. palustris 150 174
laterostrata 91 175*
laticeps 302
lemmermannii 20
lenzii 189
lesmonensis 443
levanderi 168
limata 314
limatoides 356
litoricola 409
longa
v. irregularis 413
longicephala 316
51:
(Navicula)
longifissa 387
longirostris 93
lucens 174
lucinensis 356
lusonensis 275
lyra
v. signata 488*
lyrella 482
lyroides
f. constricta 488
maculata
f. undulata 503
maeandrina 124*
maeandrinoides 124
magnifica 166
majuscula 489
majusculoides 489
manifesta 259
margaritacea 192 220
marginestriata 187 220
marnieri 449*
medioconvexa 86* 475
mediocris
v. atomus 158*
mediopunctata 174
meniscoides 414
menisculus
v. obtusa 222
meridiepacifica 501
meridionalis 391
microstauron
v. biundulata
f. major 19
minuscula 267*
v. alpestris 175
v. muralis 337*
minusculoides 267
miranda 482
misella 415
mitigata 498
mitis 330
modica 328
molestiformis 342
mollicula 329
mollissima 477
monita 497
monoculata 332 460*
v. omissa 330*
mucicola 249
muciculoides 275
muraliformis 341 354
muraloides 357
mutica
f. intermedia 125*
v. binodis 71

516
(Navicula)
mutica
v. capitata 201 217
v. distinguenda 20V
v. gibbula 327
v. gracilis 201 216
f. apiculata 353
v. tropica 202 217
miiticoides 341
naumannii 303
neoreversa 391";;"
neoventricosa
f. binodis 71"""
nivalis 201*
normalis 414
novaeseelandiae 483
nyella 490
nympharum 189 219
oahuensis 282*
oberohensis 399
obligata 202- 353*
oblonga 65"""
oblongiformis 164
obscura 196 223 267
obsidialis 268
obsita 332
obsoleta 268
obtusangula 163 197
obtuseprotracta 505
obtuserostrata 472
ochridana 329
oculiformis 408 409";;"
okunoi 504
omegopsis 315
omissa 330 358*
opportuna 362
oppressa 388
oppugnata 333
ordinaria 357 461*
oregonensis 504
orthoneoides 416
paanensis 198*
palaearctica 499
pallida 477
paludinarum
v. maculata 165
paludosa 174";;"
parsura 268*
parunculoides
389 429*
parunculus 388
patrickae 411
paulseniana 427"""
pavillardii 259
pellucidoides 477
(Navicula)
peratomus 441
perelegans 390
perhibita 360
perlata 170
perlatoides 171*
perlucida 190 219
perminuta 2Sfi%
permitis 331 441"-;"
pernrulsa 163
perobesa 165
perparva 219
perplexoides 480
perrhombus 163
perrostrata 199
perrotettii
v. enervis 472
pertenuis 169
perventralis 186 218
petersenii 206
f. gomphonemoides
206
phoenicenteron
v. irregularis 17
placentiformis 314
placentula
f. latiuscula 20*
v. apiculata 20
v, maculata 171
plana 193 223
plausibilis 126* 498
plicata
f. constricta 479
plicatoides 65"""
plitvicensis 333
porifera 170* 318
v. opportuna 362*
pozzuoliensis 478*
praerupta 316
praeterita 332
protracta 442*
f. elliptica 442
protractoides 442
pseudanglica
v. signata 319";c"
pseudoarvensis 305
pseudobrehmii 505
pseudobryophila 199";;"
pseudoclementis 389
pseudocrassirostris
473
pseudodemerarae 125
pseudoexilissima 337
pseudoforcipata 306
pseudogracilis 107
(Navicula)
pseudomitis 358
pseudomuraliforrais 341'
pseudomuralis 187 218
pseudomutica 427
pseudony 408
pseudoparunculus 389
pseudopima 400
f. lanceolata 401
pseudoporifera 392
pseudoschumanniana 44~;;"
pseudoscutiformis 120
pseudotuscula 312
psendoventralis 190
pullus 415
punctifera 390
punctigera 410
pupula 21*
v. capitata 119
v. elliptica 21
v. rostrata 21
v. subcapitata 21
pusilia
v. capitata 221*
quadripartita 86* 173
quadripunctata 362
quarnerensoides 471
radiopunctata 167
radiostriata 195
raphoneis 164*
recondita 172
regressa 172
regularis 415
reversa 390
rhombicula 479
rhombiformis 314
rhynchocephala
v. constricta 397
rhynchocephaloides 125
riparia 273
rivularis 303
rogallii 471
rotunda 328 356*
rudiformis 4§1
rumaniensis 165
rupicola 190 218
ruttneri 191 217
v. capitata 191 217
v. rostrata 191 217
salinicola 259
scabellum 275
schaeferae 491
schmassmannii 174
schoenfeldii 93
schubartii 388
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
(Navicula)
scopulorioides 470
semenoides 102
semiaperta 186
semiapproximata 483
f. constricta 483
seminuloides 188 217
v. sumatrana 188 218
semi mil urn
v. intermedia 302
v. radiosa 397
seposita 274
septata 274
f. lancettula 274
signatula 488
similis
v. strigosa 223
siolii 388
soehrensis 86*
v. septentrionalis 86
solutepunctata 260 500
sovereignae 410
sparsistriata 491
speciosa 44
spectabilis
v. bacillifera 487
v. splendida 487
spirans 175
spirata 190 2l8
splendicula 333"""
splendidula 356
stankovicii 333
strenzkei 476
stroemii 128
188* 220* 303* 328*
stundlii 460
subadnata 268
subarvensis 275
subatomoides 199
subbacillum 220
subcancellata 163
subclementis 390
subcontenta 274
v. africana 341 475';;"
subconveniens 390
subcostulata 150
v. rostrata 193
subcrassirostris 473
subdecussis 277
subdelicata 169
subdicephala 102
subforcipata 490
subfortis 400
subfossalis 149
subfraudulenta 343°
(Navicula)
subgastriformis 334
subgastrum 169 178
subhalophila 2l6
subhamulata
v. undulata 119
subhexagona l6'7
subinflatoides 477
subirroratoides 485
sublucidula 358
subminuscula
275- 329- 441"""
submitis 330
submolesta 342
submuralis 330
subnympharum 189
subocculta 120 357*
subplacentula 124
subprocera 331
subrhombica 65
subrhynchocephala 178
subrostellata 412
subrotundata 328
f. lanceolata 366
subseminulum 354
subsulcata 192 219
subsulcatoides 460
subvasta 197
subvulpina 107
suchlandtii 171 199
suecorum
v. dismutica 498*
sulcifera 409
supralitoralis 366
tackei 305
tantula 172
tenellaeformis 222
tenelloides 221 333^;"
tenera 162*
teneroides 437
tenerrima 188 219
tenuicephala 303
tenuipunctata 460
terebrata 319
terminata 202*
tersa 436
testata 276
theta 124*
thienemannii 192 217
tignaria 275
tongatensis 476
torifera 414
truncatula 505
turkestanensis 427
turris 200
517
(Navicula)
tuscula
f. angulata 304
f. minor 121
v. obtusa 71
v. rostrata 20
typografica 124
uniseriata 162
utermoehlii 199 329";;"
utlandshoerniensis 259:c"
valdestriata 388
valens 478
vara 168
^yariolata
f. intermedia 483
vasta 188 222
venezuelensis 436
ventosa 442
ventralis
v. simplex 175
ventraloides 327
verecunda 120
veterana 491
vicina 392
viminea I67
virgata 168
virginalis 436
viridula
v. linearis 200 221
v. pamirensis 65
vitabunda 120
vixvisibilis 2l6 273"""
wawrikae 472
wetzelii 107 165
woltereckii 164
zanonii 343
zeta 400*
zonata 436
Neidium
affine
v. amphirhynchus
f. undulata 47
v. lucinensis 358
alpinum 312 363";;"
ampliation 363*
densestriatum 118*
didelta 63
distinctepunctatum 72
dubium
v. constricta 72
v. elongata 365
gracile 233
f. aequalis 233
hermannii 233

518
(Neidium)
inconspicuum 54
iridis
v. amphigomphus
f. rostrata 280
v. obtusa 3&3
javanicum 233 234*
ladogense
v. densestriata 118-"-
mirabile 63
opulentum 260
productum
v. constrictum 48
v. triundulata 72
punctulatuin 63
rectum 63
tenuissimum 312
Nitzschia
abbreviata 88
accedens 262
accomodata 347
acicularioides 461
adamata 444
adapta 346
adducta 421
admissa 444
aequalis 346
aequorea 262
aerophila 268
aestuarii 456
agnita 444
alpina 313
amoena 88
amphibia
f. rostrata 457
v. pelagica 78
amphibioides 291 348*
amphioxoides 347 457
ampiectens 444
angustata
v. lanceolata 57
angustecarinata 438
angustissima 90
areolata 370
atomus 355
austriaca 458
bacata 245
f. linearis 350
bacillariaeformis 67
bacilliformis 68
bacillum. 68
balcanica 336
barkleyi 373
bavarica 393
(Nitzschia)
behrei 457
bicapitata 76* 77* 79*
bremensis 58
v. brunsvigensis 58
brevirostris 425
bryophila 206*
calcicola 366
calida 345*
capitellata 78
chilensis 108
clausii
f. major 60
compacta 450
congolensis 345
confinis 348
conformata 371
consummata 346
curvilineata 77
decipiens 450
denticuloides 290
desertorum 354
diducta 243
didyma 370
diserta 347
dissipata
v. borneensis 59
distantoides 450
divergens 372
diversa 458
dubiiformis 260
dubioides 422*
elegans 438 76*
elegantula 66'"'
elliptica 350
epiphyticoides 348
ferox 371
fonticola
v. pelagica 87
fossalis 269
frequens 445
frickei 75
frustulum
v. asiatica 68
v. bryophila 206
v. perminuta
f. constricta 26l
v. subsalina 93
fruticosa 445
garrensis 363
geitleri 461
geniculata 242
gessneri 394
gladiiformis 89
(Nitzschia)
goetzeana
v. gracilior 55
graciliformis 456*
graciloides 394 456
gradifera 67
groenlandica 74"""
grossestriata 424
guineensis 74
halteriformis 371
harderi 355
hiemalis 313
hoehnkii 456
holsatica 89
hummii 425
hybridaeformis 422
impressa 398
inducta 370
ingenua 182
insecta 294
insignis
v. lanceolata 58
intermedia
v. capitata 243
intermediopsis 243°
intermissa 347
invicta 242 291*
f. lanceolata 291
invisitata 292
irrepta 293
irresoluta 294
jucunda 336
jugiformis 68
kuetzingioides 461
lacunarum 75
lacustris 56
laeris 26l
lancettuloides 438
latens 350
lauenburgiana 36O
' legleri 458
liebetruthii
v. siamensis 79
lineola 373*
linkei 261
longirostris 246
longissima
f. costata 59
luzonensis 293
macedonica 336
macera 90*
manca 445
marginata 423
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
519
(Nitzschia)
marginulata
v. didyma
f. elongata 57
medioconstricta 450
mediocris 350
mediterranea 57
modesta 355
mollis 372
naviculaeformis 77
neglecta 451
obscurepunctata 451
obsidialis 349
obsoleta 348
obtusa
f. parva 60
obtusangula 355
omega 4-51
ostenfeldii 67
palea 78*
v. sumatrana 244
v. tropica 349
paleaeformis 364
paleoides 244
palustris 150
pamirensis 67*
parallela 423
partita 371
philippinarum 293
pilum 307
piscinarum 337
plana
v. americana 88
v. fennica 88
planctonica 79
plicatula 395
procera 424
prolongata 245
proxima 424
pseudoamphioxys 292
pseudocommunis 262
pseudofonticola 306
pseudohungarica l8l*
pseudohybrida 422
pseudolinearis 67
pseudosigma 245
pseudostagnorum 437
pulchra 369 422
pumila 398
pura 398
pusilia 355*
radicula 306
v. rostrata 36O
recta 363*
v. robusta 360
(Nitzschia)
rectangulata 372
rectiformis 312
rectissima 398
regula 68 89*
v. robusta 87
rhombica 424
rhopalodioides 423
ritscheri 449*
robusta 348
rostellata 76
rugosa l8l
ruttneri 243
salinicola 367
salvadoriana 369
schauinslandii 76
separanda 450'""
seriata 76*
sigma
v. fonticola 245
sigmaformis 424
silicula 421
v. rostrata 451
similis 243
simplex 438
sociabilis 446
solea 74
solita 395
speciosa 336
spiculoides 351
spiculum 350
stiliformis 75
stricta 346
strigillata 243
striolata 244
subacicularis 78
subacuta 79
subamphioxoides 457"'
subcapitellata 262
subcommunis 349
subdenticula 290
subfrustulum 262
subhybrida 75
subinflata 77
subinvicta 360
sublinearis 59
submarina 60
submediocris 438
subregula 89
subromana 398
subrostrata 293
subtilioides 458
subvitrea 67
suchlandtii 313
sundaensis 244
(Nitzschia)
taenia 452
taeniiformis 452°
tarda 347
tenuistriata 79
thermalis
f. curta 75
v. minor 75*
thermaloides 421
thienemannii 242
tibetana 68
towutensis 294
translucida 456
tropica 349
tryblionella
f. subconstricta 58*
v. subsalina
f. subconstricta 58
turgidula 452
umbilicata 345
vacua 365
valdestriata 367
vasta 260
ventricosa 59*
visurgis 443
woltereckii 292
Odontella
rostrata 251°
Orthoneis
horvathiana
v. robusta 95
Peronia
brasiliensis 373 392";;'
Peroniopsis 392
brasiliensis 373" 392_:
Pinnularia
acoricola 158
v. lanceolata 158
amaniensis 55
amoena 493
appendiculata
v. silesiaca 48
atomus 158
borealis
v. brevicostata 48
v. elegans 152
v. lanceolata 154
v. rectangulata 153
v. undulata 152

520
(Pinrmlaria)
brandelii
v. recta 304
brasiliensis 156
brevicostata
f. ventricosa 280
v. sumatrana 156
caloneiformis 151
constricta 163*
controversa 152
curtistriata 280
dactyloides 493
dactylus
v. sumatrana 154
debesii 100
distincta 108
divergent
v. malayensis 279
divergentissima
v. capitata 63
v. hustedtiana 64*
dubitabilis 153*
elongata 162
elongatoides 492
f. linearis 493
esox
f. major 52
f. minor 52
flexuosa
v. gibbosa 159
fonticoia 64
gibba
v. linearis 121
gracilis 160
v. americana l6l
graciloides 160*
v. americana 161 -'-
hedinii 64
hemiptera
f. constricta 232
hyalina l6l
inculpata 361
interrupta
v. gibberula 364
v. minutissima 87
karelica
v. japonica 102
v. stauroneiformis
48
kneuckeri 354
krasskei 159
v. ventricosa 159
lacunarum 155
lapponica 304
laxa 160
(Pinnularia)
legumen
v. cuneata 160
leptosoma
v. gracilis 152
major
v. capitata 153
v. clavata 153
v. hyalina 48
v. sendaiensis 153
microstauron
v. brebissonii
f. lata 338
Montana 103
obscura
v. constricta 155
ornata 156
paludosa 157
parvula 157
ranauensis 158°
rhombica 154
rhynchocephala 154""
rigens 279
rivularis 160
robusta 153
rostellata 154
rostratissima 492
f. subundulata 492
ruttneri 157
v. lauenburgiana 364
schroederi 72*
similis 152
socialis 100*
splendida 159
stomatophora l6l*
f. recta 232
v. gibbosa 304
stricta 158
subborealis 64
subcapitata
f. constricta 224
f. divergens 364
subelongatoides 493°
f. linearis 493°
subflexuosa 155
subnodosa l6l
substomatophora l6l
suchlandtii 154
sundaensis 232
tenuistriata 157
v. rostrata 157
tibetana 64
towutensis 279
trigibba 163
triumvirorum 151
(Pinnularia)
triumvirorum 151
v. linearis 151
v. ventricosa 151
tropica 344
undulata
f. stauroneiformis 87
valida 344
vasta 155
ventricosa 155
viridis
v. interrupta 48
v. paludosa 157*
woltereckii 279
Plagiogramma
brockmannii 251
rhombicum 403
tenuissimum 434
Pleurosigma
chilense 265
distinguendum 418
gracile 418
rostratum 418
subhyalinum 368
Porosira
pseudodenticulata 447*
Pseudohimantidium 265
pacificum 265
Rhaphoneis
elegantula 368
grossepunctata 404
inflata 368
m i nut iss ima ?52
similis 368
tenuis 369
Rhisosolenia
braunii 380
eriensis
v. europaea 52
v. morsa 52*
v. tenuis 270
karstenii 53
styliformis
v. longispina 53
Rhopalodia
contorta 241
gibberula
v. globosa 240
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
(Rhopalodia)
graciloides 240
novae-zelandiae 43
wetzelii 108
Stauroneis
alpina 311 463*
arctica 463
anceps
v. javanica 178
atacamae 108
biundulata 255*
borrichii
f. subcapitata 397---
branderi 463
dahomensis 19
decipiens 463
densestriata 215
distinguenda 2l6
dubitabilis 255-"- 462
elata 462
fonticoia 215
gracillima 3H
gregorii
v. densestriata
255 462*
f. linearis 254
ignorata 255
javanica
v- lapponica 86*
kriegeri
f. undulata 273*
laterostrata 311
laticeps 65
lauenburgiana 361
f. angulata 361
legleri 462
1 -i n-r, -J +- t ,-, ^. lQ.H
—j_g,iii L.i-^o. Jo/
marina 408
minutula 215
v. linearis 215
montana
v. lanceolata 149
nana 440
nodulosa 214
norvegica 463
obtusa
v. lapponica 86
olympica 372
palustris 327
phoenicenteron 17*
f. angulata 462
pygmaea
f. undulata 273
schroederi 46
(Stauroneis)
smithii
v. borgei 327*
v. elliptica 327
submarina 435
subocculta 340
tackei 305* 327*
tenera 215
tenuissima 215
thermicola
v. lanceolata 149*
thienemannii 396
f. simplex 397
undata 255 396*
f. simplex 397*
Stenoneis
inconspicua
v. bacuius 473*
Stenopterobia
intermedia
v. densestriata 29
pelagica 294 308
robusta 294
Stephanodiscus
alpinus 308
damasii 338
excentricus 382
lucens 250
tenuis 250
c 1
(Stictodiscus)
venustus 322
Surirella
aculeata 82
acuminata 83
affinis 95
alata 296
angusta
v. constricta 122
angustemarginata 112
angusticostata 246
angustiformis 296
apiculata
v. constricta 49
arabica
v. taeniata 96*
arguta 111
asperrima 309
atomus 425
bidens 300
bidentula 309
birostrata 27
biseriata
v. celebesiana 295
v. constricta 22
v. heteropolis 295
v. robusta 182
borneensis 51
brasiliensis 112
braunii 496
brevicostata
v. constricta 50
v. elongata 50
• campechiana 97
capronii
v. obtusa 104
cataractarum 247
celebesiana 298
v. matanensis 298
ceylanensis 99* 100*
v. oblongistriata 50
chilensis
v. constricta 109
v. rostrata 109
v. tumida 108
circumvallata 111
conversa 297
costulata 28 87*
curvifacies 28*
cuspidata 297
f. constricta 351
debesii 83
decipiens 298
distinguenda 28
Stictodiscus
amoenus 320
bathyomphalus 321
californicus
f. concentriea 264
caraibicus 320*
grunowii
f. trigona 322
hardmanianus
269 f. subquadrata 264
f. trigona 184 321
inelegans 320
minutus 322
parallelus
v. tenuis 322
pulcherrimus 320
robustus 320
similis 264
splendidus 321
subsplendidus 321
truanii
f. trigona 264

522
(Surirella)
dumae 43
effusa 94
elegans
f. angusta 247
f. lata 301
elegantula 300
f. cuneata 300
elgeri 98
excellens 301
fastuosa
v. splendida 111
feuerbornii I83
fimbriata 299
fonticola 248
frickei 27
fuellebornii
v- tumida 83
galapagensis 95
gessneri 439
gradifera 8l
grossestriata 496
halteriformis 296
heidenii 82
hians 110
hoefleri 459
horrida 297
f. constricta 297
huberi 185
imperfecta 97
incerta 112
induct a 18 5";:"
investiens 496
karstenii 98
kolbei 112
lata
v. elliptica 110
latecostata 8l
lancettula 8l
lemmermannii 2b* &7
linearis
v. constricta
f. lata 22
litoralis 425
macraeana 96*
margaritifera 82
marginestriata 98
mediterranea 96
meisteri 99
modesta 94
muelleri 182*
munda 110
nankoorensis 96 110*
oblongo-elliptica 51
ornatissima 110
(Surirella)
ovulum 299
papillifera 296
pediculata 301
propinqua 351
proxima 248
pseudocomis 51
pseudospiralis 246
pseudosplendida 182
pseudovalis 299 310
pumila 496
regina 27*
reicheltii 8l
robusta
f. lata 104
f. punctata 18*
v. armata 247
v. splendida
f. constricta 28
rorata 18 5":c"
rudis 84
v. levis 299
sella 99
septentrionalis 52
seychellarum 99
v. biseriata 99
siolii 495
skvortzowiana 310°
skvortzowii 309
solida 97
sparsipunctata 51
v. laevis 80
spinifera 182
spinosa 247
spiraloides 80
splendida
f. constricta 28*
v. punctata 18
splendidoides 495
strigosa 95
striolata 84
subcontorta 83
subfastuosa 52*
subhybrida 95
sublinearis 295
submarina 46
subrobusta 80
subturgida 246
sulcata 301
taeniata 96
tenera
f. cristata 446
f. nervosa 446*
v. subconstricta 22
tenuissima 45
(Surirella)
terryi 84*
v. levis 299*
thienemannii 183
toamasinensis 97
traunsteineri 28
tropica 96
vasta 82
v. linearis 309
ventricosa 300
visurgis 446
wetzelii 98
v. dubia 109
wolte-^ckii 299 309
Synedra
affinis
v. obtusa 49
brockmannii 132
distinguenda 132
investiens
f. rhomboidea 440
pulchella
v. lacerata 46
v. lanceolata
f. constricta 114
v. minuta 46
rumpens
v. fragilarioides
f. constricta 209
tabulata
v. obtusa 49*
ulna
v. claviceps 209
v. fonticola 209
v. impressa 49
v. tenuirostris 208
utermoehlii 132
Tetracyclus
ellipticus 26*
f. minor 26
v. constricta 25
v. inflata 26
v. lancea
f. elongata 26
f. lata 26
f. subrostrata 26
v. latissima 27
f. major 27
f. minor 27
javanicus 43
lacustris
v, capitatus 23
v. compacta 25
SCANNED sdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
523
(Tetracyclus)
lacustris
v. elongatus 23
v. rhombicus 22
v. strumosa 22*
v. tenuis 25
rostratus 43
Thalassionema
bacillaris 448*
elegans 448
Thalassiosira
delicatula 447
expecta 447"""
fluviatilis 100
gessneri 432
gracilis
v. expecta 447";:"
pseudonana 439'""
ritscheri 448*
salvadoriana 433
simplex 433
visurgis 439
weissflogii 100*
Thalassiothrix
lanceolata 448
longissima
v. lanceolata 448*
Trachysphenia
australis
v. rostellata 404
Triceratium
ant e d iluv i anum
f. pentagona 123
archangelskianum
v. magnifica 127
balearicum
f. quadrata 123
biforme 469
capitiferum 465
circumvallatum 469
crispulum 466
demissum 467
gracile 127
gracillimum 465
haitlanum 468
hannaianum 128
ischaboense 123
kolbei 127
luculentum 466
multifrons
f. stricta 465
nobile 126*
obtusangulum 466
occultum 127
officiosum 465
pileolus
v. minuta 126
polycystinorum l84';;"
pseudotrisulcum 184
pulchrum 468
radiopunctatum 184*
reticulum
f. pentagona 123
f. quadrangularis 123
(Triceratium)
semicirculare 263
sentum
f. major 466
simile 467
sparsipunctatum 466
splendidum 467
subofficiosum 465
subquadrangulare 470
subundosum 126
subvenosum 184
sundbyense 126
taeniatum 468
trinitas
v. stricta 126
turgidulum 469
udiense 467
varians 127
venulosum
f. quadrata 468
verecundum 464
veterarium 467
vetustum 464
wetzelii I84
wittii
f. pentagona 184
Tropidoneis
lepidoptera
v. javanica 234
Addenda
Page 251j tx 102-6 Plagiogramma brockmannii; add as last paragraph:
N.B. Hasle, v. Stosch & Syvertsen (Bacillaria 6, p 35, 1983)
transferred this taxon to their genus Brockmanniella of which it is the type.
Page 255, tx 102-18 Stauroneis ignorata; add as last paragraph:
N.B. In op 166j p 805j f 1153* Hustedt synonymizes this taxon with
and includes it in Stauroneis prominula (Grunow) Hustedt. The valid name,
however, is Stauroneis biundulata A. Cleve-Euler 1934.
Page 256/257, tx 102-24 Navicula bremeyeri forma rostrata: add as last
paragraph:
In op 171 j P 267, Hustedt includes this taxon as synonym in Navicula
bahusiensis Grunow.

524
Corrigenda
Volume 1
Page 19, tx 8-1, for Plate 3/2-5 read 3/6-9-
tx 8-4, for Plate 3/5-6 read 3/10-11.
Page 84, tx 41-17, for finder 408.6 read 408.6-9.
Page 103j tx 60-9, for slide 166/7 read 166/97-
Page 104, tx 60-13, for slide 166/7 read 166/97-
Page I56; tx 83-23, slide P2/53, for finder 496.3 read 491-9-
Page 186, tx 89-1, for slide Nl7/l6 read N7/l6.
Page 202, tx 89-62, for Plate 31l/l-3 read 312/1-3.
tx 89-63, for Plate 3H/9-12 read 312/9-12.
Page 203, tx 89-64, for Plate 311/4-8 read 312/4-8.
Page 207, tx 93-2, for Plate 320/1-9 read 320/1-8.
tx 93-3, for Plate 320/10-13 read 320/9-12.
tx 93-4, for Plate 320/H-20 read 320/13-19-
tx 93-6, for Plate 320/21-26 read 320/20-25.
Page 208, tx 93-7, for Plate 320/27-30 read 320/26-29.
tx 93-8, for Plate 320/31^38 read 320/30-37-
Page 215, tx 94-25, slide Na2/9, add finder 318.8.
Page 262, tx 102-45, add finder 408.9-
Page 28l, tx 108-51, for Plate 417/18-19 read 417/17-19-
Page 282, tx 108-52, for Plate 416/5-8 read 416/4-8.
Page 284, tx 108-61, slide Tl/37, add finder 370.9-
Page 341, tx 122-11, slide N14/76, for finder 470.8-9 read 407-8-9-
Page 358, tx 126-5, for Plate 534/1-3 read 543/1-3-
Page 366, tx 129-3, for finder 347-7-8 read 348-7-8.
Page 371, tx 131-15, for finder 348.8-9 read 347.8-9.
Page 485, tx 172-20, slide Zt6/ll, for finder 485-9 read 585-9-
Page 488, tx 172-33, for slide Jf 14/59 read N14/51•
Volume 2
Plate 2, for f 2, 3 xlOOO read f 1, 3 xlOOO.
Plate 3/4-5, for slide N22/5 read Nb2/5-
Plate 5/12-13, for finder 402.3 read 402.6.
Plate 34/9, for finder 26/.8 read 260.8.
Plate 43/5-jQ; fnr slid? 19/4 ^ari 88/68; for ficd-sr .166.5 read 466.4 5-
Plate 103/3-2. for finder 293-1-4 read 283-1-4.
Plate 104/1, for finder 497-7 read 499.7.
* Plate 109/3, add finder 468.6-9.
Plate 112/1-2, for slide X2/86 read X2/85-
Plate 246/3-4, for finder 423-3 read 432-3-
Plate 276/8, for finder 431-1 read 341-1.
Plate 283/4-7, for finder 436-5 read 526.6 and for finder 526.6 read 4j6.5-
Plate 303/3-5, for slide N9/96 read N9/95-
Plate 308/1-6, for slide 12/84 read N12/84-
/6, for finder 372.8-9 read 370.8-9.
/25-27, for slide N15/52 read N15/42.
Plate 309/8, for finder 377-8-9 read 317.8-9-
Plate 320/1-8, for f 1-3 read 1-2, for 4-5 read 3-4, for 6-9 read 5-8.
Plate 329/4, for finder 341.1-4 read 344.1-4-
Plate 331/8, is from slide 199/98 (460.3-6).
Plate 332/3-6, for advena read subadvena.
Plate 375/12-14, for finder 595-4 read 585-4-
SCANNED SdJVUED BY pAhUTA yURI, Kiev-2007,e-mail pahutaqweirambler.ru
Plate 376/21-22, for finder 523-3-6 read 525-3-6,
Plate 377/3-5, for slide N18/8 read Nl8/l8.
Volume 3
Plate 419/5, for finder 317-7-8 read 313-7-8.
Plate 464/1-2, add finder 528.9.
Plate 472/14, for slide N17/20 read N17/70.
Plate 514, for f 1-4 read 1-6.
Plate 532/1-6, for accoraoda read accomodata.
Plate 534/18-20, for slide 244/7 read 244/17.
Plate 571/11-12, for finder 225.5-6 read 222.5-6.
Plate 587/5-8, for slide Ne/48 read Nc/48.
Plate 605/5, for finder 464-4-7 read 564.4-7.
Plate 628/15-16, for slide Ztl/95 read Ztl/85.
Plate 641/IO, for finder 512.3 read 519.3.
Plate 660/8, for slide Nll/14 read Nll/4.
Plate 685/5, for finder 480.6 read 46O.6.
Plate 715/1-3, for slide H7/87 read H7/7.
Plate 751, for f 2-4 read 2-7.
Plate 753/12-13, for slide 329/69a read 323/69a.
Plate 766/1-2, for slide N4/94 read NI4/96.
525