A Stereo-Atlas of Ostracod Shells

edited by R.H. Bate, J.W. Neale, Lesley M. Sheppard

and David J. Siviter

Volume 8, Part 1; 26th June 1981

f.fc !

Published by The British Micropalaeontological Society
in association with Robertson Research International Ltd., Llandudno, Wales.

a

Editors

Dr. R. H. Bate, Department of Palaeontology, British Museum (Natural History), Cromwell Road,
London SW7 5BD.

Prof. J. W. Neale, Department of Geology, The University, Hull HU6 7RH.

Ms. Lesley M. Sheppard, Department of Palaeontology, British Museum (Natural History),
Cromwell Road, London SW7 5BD.

Dr. David J. Siveter, Department of Geology, The University, Leicester LEI 7RH.

Editorial Board

Dr. Richard H. Benson, Smithsonian Institution, Washington, D.C., 20560. U.S.A.

Dr. Alwine Bertels, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires,
Argentina.

Dr. K. Ishizaki, Institute of Geology and Paleontology, Tohoku University, Sendai, Japan.

Dr. C. W. Haskins, Robertson Research International Limited, ‘Ty’n-y-Coed’, Llanrhos, Llandudno,
N. Wales, LL30 ISA.

Dr. P. J. Jones, Bureau of Mineral Resources, P.O. Box 378, Canberra City, A.C.T. 2601 , Australia.
Prof. Dr. E. Kempf, Geologisches Institut der Universitat Koln, Ziilpicher Strasse 49, D-5 Koln 1,
German Federal Republic.

Dr. H. J. Oertli, S.N.P.A., Centre de Recherches, 64001 Pau, France.

Prof. G. Ruggieri, Instituto e Museo di Geologia dell’Universifa di Palermo, Corso Tukory, 131,
90134 Palermo, Italy.

Mr. P. F. Sherrington, Petro-Canada, P.O. Box 2844, Calgary, Alberta T2P 2M7, Canada.

Instructions to Authors

Contributions illustrated by scanning electron micrographs of Ostracoda in stereo-pairs are invited.
Full instructions may be obtained on request from any one of the Editors or Editorial Board. Format
should follow the style set by the majority of papers in this issue. Descriptive matter apart from
illustrations should be cut to a minimum; preferably each plate should be accompanied by one page
of text only. Blanks to aid in mounting figures for plates may be obtained from the Editors.
Completed papers should be sent to Ms. L. M. Sheppard, Department of Palaeontology, British
Museum (Natural History), Cromwell Road, London SW7 5BD.

Acknowledgments

This Volume of the Stereo-Atlas has been aided by generous financial support from Robertson
Research International Limited.

Stereo-viewing for users of the Atlas

In order to obtain maximum information and benefit from the use of the Stereo-Atlas it is essential
that the user view the micrographs stereoscopically. Small pocket-sized stereo-viewers are most
suitable for this purpose. Two suppliers are:

C. F. Casella & Co. Ltd., Regent House, Britannia Walk, London N1 7ND and
Air Photo Supply Corpn., 1 58 South Station, Yonkers, New York 10705. U.S.A.

The front cover shows a female right valve and juvenile left side of Hemicytherura videns (Muller).

Plates reproduced by United Printing Services, Blackpool, England.

Stereo-Atlas of Ostracod Shells 8(1) 1 - 6(1 981) Hemicytherura cellulosa (1 of 6)

595.337.14 (119.9) (261.27:162.004.51 + 162.006.55 + 261.268:162.003.50 + 261.26:162.001.54) : 551.351

ON HEMICYTHERURA CELLULOSA (NORMAN) Emend

by John E. Whittaker

(British Museum (Natural History ), London)

Genus HEMICYTHERURA Elofson, 1941

Type-species (subsequent designation by Elofson, 1941): Cythere cellulosa Norman, 1865

Diagnosis: Adult carapace small (usually <0.4mm), heavily calcified with large excavated fossae; sola of fossae
reticulate. Large eye spot and caudal process present. Pore conuli well developed, pores of simple type.
Internally, hinge of left valve with terminal crenulate sockets and intervening median bar with dentate
extremities. Calcified inner lamella broad anteriorly, narrow posteriorly. Vertical row of four adductors,
with one frontal scar. Males smaller than females and more elongate.

Remarks: The shape and subdivision of the fossae are of prime importance for specific differentiation. It is probably
also a diagnostic feature of the genus that the distinctive adult ornamentation is developed only in the
final moult, all the instar stages being merely punctate with a fine ghost reticulation.

"7‘

H-

Explanation of Plate 8, 2

Fig. 1, 6 LV, ext. lat. (1980.321, 310 fim long); fig. 2, 9 LV, ext. lat. (1980.322, 360 /im long); fig. 3, 9 RV, ext. lat. (lectotype,
1980.323, 350 p m long).

Scale A (100 p m; x 175), figs. 1 - 3.

■«~n-

i — t-t-

++-+

Stereo- Atlas of Ostracod Shells 8, 3

Hemicytherura cellulosa (3 of 6)

Hemicytherura cellulosa (Norman 1865)

1865 Cythere cellulosa sp. nov. A. M. Norman, in G. S. Brady, Nat. Hist. Trans. Northumb., 1, 22, pi. 5, figs. 17-20 {non pi.
6, fig. 17 = //. hoskini Horne, 1981).

1868 Cytherura cellulosa (Norman); G. S. Brady, Trans. Linn. Soc. Lond., 26, 446, pi. 29, figs. 47 - 50 ( non pi. 29, fig. 60 =
H. hoskini).

1889 Cytherura concentrica Brady, Crosskey & Robertson; G. S. Brady & A. M. Norman, Scient. Trans. R. Dubl. Soc., ser. 2,
4, 201 {pars), pi. 17, figs. 28, 29 (= juveniles); non pi. 19, figs. 3, 4.

1941 Cytheropteron (Hemicytherura) cellulosa (Norman); O. Elofson, Zool. Bidr. Upps., 19, 314.

1 973 Hemicytherura cellulosa (Norman); J. E. Whittaker, Stereo-Atlas of Ostracod Shells, 1, 77, pis. 1:14:78, 80, 82, 84.

1975 Hemicytherura cellulosa (Norman); I. R. Hoskin, Revta esp. Micropaleont., 7, 91, pi. 1, figs. 5, 6; text-figs. 2, 5, 6.

Lectotype: (here designated) Brit. Mus. (Nat. Hist.) no. 1980.323, 9 RV.

Type locality: Lamlash Bay, Isle of Arran, W Scotland, approx, lat. 55° 32' N, long. 05° 08' W; Recent.

Figured specimens: Brit. Mus. (Nat. Hist.) nos. 1980.321 (6 LV: PI. 8,2, fig. 1), 1980.322 (9 LV: PI. 8, 2, fig. 2), 1980.323 (lectotype, 9 RV: PI. 8, 2, fig. 3),
1980.324 (juv. -1 LV: PI. 8, 4, fig. 1), 1980.325 (9 car.: PI. 8, 4, fig. 2), 1980.326 (? 9 RV: PI. 8, 4, fig. 3), 1980.327 (d copulatory
appendage: Text-fig. 2).

1980.321, 322, collected alive at low water mark from the red-alga Plocamium cartilagineum by D. J. Horne at Gore Point,
Porlock, S shore of Bristol Channel, W England, approx, lat. 51° 14' N, long. 03°37'W; 9th March 1978; salinity 31.7%o, water
temperature 9°C. 1980.323 collected at type locality in 1854 by A. M. Norman (ex Norman Coll, slide no. 191 1 .1 1.8.M 3666). 1980.324
from green-algae at Bran Point, Weymouth Bay, S England, approx, lat. 50° 38' N, long. 02° 22' W; collected by J. E. Whittaker, 15th
August 1 968 ; salinity 34.5%e, water temperature 16°C. 1980.325 from red-algae in 3m of water at Redcliff Point, Weymouth Bay, approx,
lat. 50° 38' N, long. 02° 24' W; collected by divers, 6th September 1969; salinity 34.7%o. 1980.326,327 , collected alive by D. J. Home
from mixed intertidal algae, Robin Hood’s Bay, NE England, approx, lat. 54° 26' N, long. 00° 32' W; 22nd September 1979.

Explanation of Plate 8, 4

Fig. 1 , juv. -1 LV, ext. lat. (1980.324; 320 pm long); fig. 2, 9 car., ext. vent. (1980.325, 370 pm long); fig. 3, ? 9 RV, ext. lat.
with ornament transitional between juv. and adult (1980.326, 340 pm long).

Scale A (100 pm\ x 175), figs. 1 - 3.

Hemicytherura cellulosa (2 of 6)

Stereo-Atlas of Ostracod Shells 8, 2

Stereo-Atlas of Ostracod Shells 8, 4

Hemicytherura cellulosa (4 of 6)

Stereo-Atlas of Ostracod Shells 8, 5 Hemicytherura cellulosa (5 of 6)

Diagnosis: (Using the numerical notation of Hoskin 1975; see Text-fig. 1). Central group of seven subcircular fossae (1" ,
1"' , 1IV , 2, 3", 5", 9"), of which all but 3" and 9" are distinctly separated from surrounding fossae. Caudal
process short. Viewed ventrally, female carapace subovate, greatest width behind mid-point. Distal lappet of
male copulatory appendage, broad, short and curved

Remarks: An emended version of my paper (op. cit.) is occasioned by Hoskin’s discovery (1975) of two species of
Hemicytherura in British waters, and that both Norman (1865) and Brady (1868), had in fact figured the two,
unbeknown to themselves and all subsequent workers. Hoskin’s identification of the second species as H. videns
(Muller) is shown elsewhere (Horne, Stereo-Atlas of Ostracod Shells, 8, 13, 1981) to be incorrect, and a new
species,//, hoskini Horne, is erected.

In order therefore, to redefine H. cellulosa in the light of this discovery, a lectotype is chosen (PI. 8, 2,
fig. 3) from the remaining syntypic material in the Brit. Mus. (Nat. Hist.). Of the two slides still extant, both of
which incidentally contain only H. cellulosa s.s., that from Lamlash Bay contained the best preserved material.
A new diagnosis is also presented.

H. cellulosa differs from H. hoskini particularly in the subdivision of fossae 9 and 1 , in the shape of the
carapace in lateral and ventral/dorsal view and in the shape of the distal lappet of the male copulatory
appendage.

PI. 8, 4, fig. 3 shows a curious specimen, the only one so far discovered, which has the size and shape of
an adult female, but possesses a mixture of adult (around the outer margins) and juvenile (mid-region)
ornament. The valves are fully calcified so the possibility that the individual was ‘caught’ in the process of
moulting must be ruled out. Rather, it is suggested the specimen represents some form of genetic damage, which
might not be uncommon, but which is particularly apparent in this case as the difference in ornament between
the penultimate instar and adult carapaces is normally so marked in Hemicytherura.

Distribution: Recent, marine phytal species: coasts of NW Europe from France to Norway; records elsewhere still await

confirmation. Sub-Recent:Holland (Wagner, Sur les Ostracodes du Quatemaire recent des Pays-Bas.

Mouton & Co., The Hague, 76, 1957).

Stereo-Atlas of Ostracod Shells 8, 6

Hemicytherura cellulosa (6 of 6)

Text-fig. 1. Hemicytherura cellulosa (Norman).
Generalized sketch of $ RV with Hoskin’s (1975)
numerical notation of the fossae. Drawing by
J. Athersuch.

Text-fig. 2. Hemicytherura cellulosa (Norman). 6
copulatory appendage (1980.327). Robin Hood’s
Bay, NE England. Dissection and drawing by
D. Horne.

Stereo-Atlas of Ostracod Shells 8 (2) 7-12 (1981) Hemicytherura aegyptica (1 of 6)

595.337.14 (1 19.9) (267.33:161.027.33 + 267.35:161.054.24) : 551.351

ON HEMICYTHERURA AEGYPTICA HARTMANN

by Ann R. Gurney

British Museum (Natural History), London

Hemicytherura aegyptica Hartmann, 1964

1964 Hemicytherura videns aegyptica subsp. nov. G. Hartmann, Kieler Meeresforsch., 20, 50, pi. 13, fig. 61, pi. 14, figs. 62 -

66.

1 975 Hemicytherura videns aegyptica; I. R. Hoskin, Revta esp. Micropaleont., 7, 92 et seq., text-fig. 1 (5).

Holotype: Zoologisches Museum, Universitat Hamburg, no. 28000, 9 car.; separated into LV & RV on slide; RV
figured herein.

[Paratypes: Zoologisches Museum, Universitat Hamburg, no. 28213, d copulatory appendage on
slide and specimens in alcohol].

Explanation of Plate 8, 8

Fig. 1, d ext. It. lat. (1980.351, 300 pm long); fig. 2, 9 ext. It. lat. (1980.352, 320 pm long); fig. 3, 9 ext. rt. lat. (holotype,
28000, 330 pm long).

Scale A (100 pm; x 1 75), figs. 1 - 3.

i — »-+■

•fj— t-

Stereo-Atlas of Ostracod Shells 8, 9

Hemicytherura aegyptica (3 of 6)

Type locality: Ghardaqa (Hurghada), Egyptian coast of Red Sea, approx, lat. 33° 05 ' N, long. 27° 02 1 E; Recent.

Diagnosis: (Using the numerical notation of Hoskin 1975; see Text-fig. 1 .) Central group of five fossae (l1 , 1" , 2, 3" ,
5") of which all but 3" are distinctly separated from the surrounding fossae by a thick murus. Viewed
ventrally, female carapace widest in front of mid-point. Distal lappet of male copulatory appendage long
and styliform.

Figured specimens: Brit. Mus. (Nat. Hist.) nos. 1980.351 (d LV: PI. 8, 8, fig. 1), 1980.352 (9 LV: PI. 8, 8, fig. 2), 1980.353
(juv. -1 car.: PL 8, 10, fig. 1), 1980.354 (9 car.: PI. 8, 10, fig. 2), 1980.355 (d LV: PI. 8, 10, fig. 3),
1980.356 (d copulatory appendage: Text-fig. 3). Zoologisches Museum, Universitat Hamburg no. 28000
(holotype, 9 RV: PI. 8, 8 fig. 3), no. 28213 (paratype.d copulatory appendage: Text -fig. 2). Specimens
1980.351 - 356 are Recent from oolith delta, seaward side of Essadiyat Is., Abu Dhabi lagoon, Arabian
Gulf, approx, lat. 24° 28' N, long. 54° 25' E; collected by Dr. G. Evans, Imperial College, London.
Specimen no. 28000 is from the type locality. Specimen no. 28213 is from Abomingar, a coral island,
Egyptian coast of Red Sea, approx, lat. 33° 05 ' N, long. 27° 02' E; Recent.

Explanation of Plate 8, 10

Fig. 1, juv. -1 car., ext. It. lat. (1980.353, 270 pm long); fig. 2, 9 car., vent. (1980.354, 310 pm long); fig. 3, d LV int. lat.
(1980.355, 310 pm long).

Scale A (100 nm; x 175), figs. 1 - 3.

Hemicytherura aegyptica ( 2 of 6)

Stereo-Atlas of Ostracod Shells 8, 8

Stereo- Atlas of Ostracod Shells 8, 10

Hemicytherura aegyptica (4 of 6)

•f

Stereo-Atlas of Ostracod Shells 8, 1 1 Hemicytherura aegyptica (5 of 6)

Remarks: Through the kindness of Professor G. Hartmann, it has been possible to re-examine the holotype of
H. videns aegyptica by scanning electron microscopy. This taxon is now considered to be sufficiently
distinct from H. videns (Muller) (see WheTsuch, Stereo-Atlas of Ostracod Shells,S, 19, 1981) to warrant
separate specific status. Material from the Arabian Gulf was identified as H. aegyptica following a
comparison of the fossal patterns of the shell and male copulatory appendages (compare Text-figs. 2, 3)
with those of the Red Sea material.

Distribution: Material is recorded from the Red Sea by Hartmann (1964) and Abu Dhabi lagoon, Arabian Gulf in this
paper.

Stereo-Atlas of Ostracod Shells 8,12

t—

Hemicytherura aegyptica (6 of 6)

i 100 pm |

Text-fig. 1. Hemicytherura aegyptica Hartmann.
Generalised sketch of a 9 RV, with Hoskin’s (1975)
numerical notation of the fossae.

Drawing by J. Athersuch.

Text-figs. 2, 3. Hemicytherura aegyptica Hartmann;
6 copulatory appendages. Text-fig. 2, Abomingar Is.,
Red Sea (28213); Text-fig. 3, Essadiyat Is., Arabian
Gulf (1980.356).

Dissections and drawings by D. Horne.

TT

+ -*- +

+ ■+— r

-T-tt'

■H — i-r-

Stereo-Atlas of Ostracod Shells 8 (3) 13 - 18(1 981) Hemicytherura hoskini (1 of 6)

595.337.14 (119.9) (261.27:162.004.51) : 551.351

ON HEMICYTHERURA HOSKINI HORNE sp. nov.

by David J. Horne

(City of London Polytechnic , England)

Hemicytherura hoskini sp. nov.

1865 Cy there cellulosa sp. nov. A. M. Norman, in G. S. Brady, Nat. Hist. Trans. Northumb., 1 (pars), 22, pi. 6, fig. 17 ( non
pi. 5, figs. 17-20).

1868 Cytherura cellulosa (Norman); G. S. Brady, Trans. Linn. Soc. Lond., 26 (pars), 446, pi. 29, fig. 60 ( non pi. 29, figs.
47- 50).

1975 Hemicytherura videns videns (Muller); I. R. Hoskin, Revta esp. Micropaleont., 7, 91, text-fig. 2 (1 - 4), pi. 1, figs. 1 - 4.

Holotype: Brit. Mus. (Nat. Hist.) 9 no. 1980.345 (LV) no. 1980.346 (RV).

[Paratypes: nos. 1980.344, 1980.347 - 350. Further paratypes, one 6 and two 9 carapaces from
the same sample as the holotype, are deposited in the City Museum, Bristol, no. Cd 580 - 582].

Type locality: On the S shore of Bristol Channel at Gore Point, Porlock, Somerset, W England; approx, lat. 51° 14' N,
long. 3° 37' W; Recent.

Derivation of name: After Dr. I. R. Hoskin, the author who first distinguished this species from H. cellulosa.

Explanation of Plate 8, 14

Fig. 1, 6 LV, ext. lat. (1980.344, 300 pm long); fig. 2, 9 LV, ext. lat. (holotype, 1980.345, 320 pm long); fig. 3, 9 RV, ext. lat.
(holotype, 1980.346, 320 ^m long).

Scale A (100 pm\ x 175), figs. 1 - 3.

•F

L4-.

I — l-t-

.-L-L-+-

Stereo-Atlas of Ostracod Shells 8, 15

Hemicytherura hoskini (3 of 6)

Figured specimens: Brit. Mus. (Nat. Hist.) nos. 1980.344 (d LV: PI. 8, 14, fig. 1). 1980.345 (holotype, 9 LV: PL 8, 14, fig. 2),
1980.346 (holotype, 9 RV: PI. 8, 14, fig. 3), 1980.347 (d car.: PI. 8, 16, fig. 1), 1980.348 (9 car.: PI. 8,
16, fig. 2), 1980.349 (9 LV: PI. 8, 16, fig. 3), 1980.350 (d copulatory appendage: Text-fig. 2).

Nos. 1980344 - 346, 348, 349 were collected alive by the author at the type locality on
9.3.1978, on the red alga Plocamium cartilagineum, at low water mark on a spring tide ; salinity 31.7%o,
water temperature 9.0°C. Nos. 1980.347,350 were collected alive at the type locality on 18.9.1978 on the
calcareous alga Corallina officinalis, at low water mark on a spring tide; salinity 33.1%e, water
temperature 16.0°C, pH 8.3.

Diagnosis: (Using the numerical notation of Hoskin 1975; see Text-fig. 1.) Central group of fossae of which only 1
and 2 are distinct, while 3" and 5" are separated only partially or weakly from 3' and 5' respectively.
Viewed ventrally, female carapace widest behind mid -point. Distal lappet of male copulatory appendage
blade-like, acuminate, with a characteristic step in the inner margin.

Remarks: Hoskin (1975) found that in addition to H. cellulosa (Norman) a second species of Hemicytherura could
be recognised in British waters, the two being distinguished on the basis of variation in the fossal pattern
of the adult carapace. He ascribed this second species to H. videns (Muller) (see Athersuch, Stereo- Atlas
of Ostracod Shells, 8, 19, 1981) drawing attention to similarities between specimens from Ireland and
H. videns from Mediterranean localities. Examination of carapaces and appendages of specimens from
Britain and the Mediterranean now shows clearly that the British (herein = H. hoskini ) may be
distinguished from H. videns on the basis of carapace morphology and the detailed structure of the male
copulatory appendages.

Explanation of Plate 8,16

Fig. 1, 6 car., dors., (1980.347, 310 pm long); fig. 2, 9 car., vent., (1980.348, 330 long); fig. 3, 9 LV, int. lat. (1980.349,
310 pm long).

Scale A (100 pm \ x 175), figs. 1 - 3.

Stereo- Atlas of Ostracod Shells 8, 1 4

Hemicytherura hoskini (2 of 6)

Stereo-Atlas of Ostracod Shells 8, 1 6

Hemicytherura hoskini (4 of 6)

Stereo-Atlas of Ostracod Shells 8, 17 Hemicytherura hoskini (5 of 6)

Remarks: H. hoskini differs from H. videns in the arrangement of the central lateral group of fossae, the latter
fcontd.) having a distinct cluster of five (l1, 1" , 2, 3" and 5"), whereas the former has only two (1 and 2). In
lateral view H. hoskini is more produced anteriorly; in ventral view it is cuneate, tapering anteriorly
for about 2/3 of its length, while H. videns is quadrate and tapers anteriorly for only 14 of its length.

H. cellulosa (see Whittaker, Stereo-Atlas of Ostracod Shells, 8, 1 , 1981) differs from H. hoskini in
exhibiting subdivision of fossae 9 and 1 , in lateral and ventral outline, and in the shape of the distal lappet
of the male copulatory appendage. The present author follows Hoskin {op. cit.) in regarding the figures
of Norman (1865) and Brady (1868) as representing examples of both British species.

H. aegyptica (Hartmann) (see Gurney, Stereo-Atlas of Ostracod Shells 8,7, 1981) as well as two
other Mediterranean species, H. gracilicosta Ruggieri and H. defiorei Ruggieri, may be distinguished from
H. hoskini on the basis of fossal patterns.

In most specimens the major fossae are faintly broken up by “ghost” muri (indicated by dotted
lines in Text-fig. 1), some of which tend to develop into incipient muri; the resulting occasional
subdivisions of fossae 1 and 12, noted by Hoskin {op. cit.), were observed in a few specimens from large
populations at Gore Point.

Adults and juveniles of the genus Hemicytherura are very different in appearance, virtually all of
the distinctive adult ornament being added in the final moult (see Whittaker, Stereo-Atlas of Ostracod
Shells, 1, 77, 1973 and 8, 1 , 1981). As yet H. hoskini has only been found in samples which also yielded
H. cellulosa, and it has proved impossible to distinguish between juveniles of the two species with any
certainty.

Distribution: Recent. H. hoskini is recorded from the Bristol Channel (herein) and the W coast of Ireland (Hoskin, op.

cit.)', it is probably more widespread, having been formerly grouped with H. cellulosa. At Gore Point in
the Bristol Channel, it was found alive on various algae, within salinity range 31.0 - 33.8%o, on many
occasions throughout 1977 and 1978, being most abundant in autumn.

Stereo-Atlas of Ostracod Shells 8,18

Hemicytherura hoskini (6 of 6)

25 pm

, 100/zm

Text-fig. 2. Hemicytherura hoskini. 6 copulatory

appendage (1980.350).

Text-fig. 1. Hemicytherura hoskini. Generalised
sketch of a 9 RV with Hoskin’s (1975) numerical
notation of the fossae.

Drawing by J. Athersuch

j.

T‘

Stereo-Atlas of Ostracod Shells 8 (4) 19-26 (1981) Hemicytherura videns (1 of 8)

595.337.14 (11 9.9) (262.2:161.033.35 + 161.033.34 + 262.1:161.011.36 + 161.014.14 + 261.1.017.28) : 551.351

ON HEMICYTHERURA VIDENS (MULLER)

by John Athersuch

(B.P. Research Centre, Sunbury-on-Thames, England)

Hemicytherura videns (Muller, 1894)

1894 Cytheropteron videns sp. nov. G. W. Muller, Fauna Flora Golf. Neapel, 21, 303, pi. 20, figs. 2, 8, pi. 21, figs. 15, 16, 18.
1942 Cytheropteron (Hemicytherura) videns Muller; W. Klie, Zool. Anz., 138, 72.

1953 Hemicytherura videns (Muller); G. Ruggieri, A tti Soc. ital. Sci. nat., 92, 49, figs. 4, 4a, 4b, 6, 6a.

1959 Hemicytherura videns videns (Miiller);G. Ruggieri, Ibid., 98, 193.

1972 Hemicytherura videns videns (Muller); H. Uffenorde, Gottinger Arb. Geol. Palaont., 13, 88, pi. 9, fig. 9.

1 979 Hemicytherura videns videns (Muller); I. Yassini, Revta esp. Micropaleont., 11, 385, pi. 6, fig. 1 9.

Neotype: Brit. Mus. (Nat. Hist.) no. 1980.338, 9 RV and LV.

Type locality: Salerno, W Italy, approx, lat. 14° 40' N, long. 14° 46' E; Recent.

Figured specimens: Brit. Mus. (Nat. Hist.) nos. 1980.328 (<J LV: PI. 8, 20, fig. 1), 1980.329 (9 LV: PI. 8, 20, fig. 2), 1980.330
(9 RV: PI. 8, 20, fig. 3), 1980.331 (juv. -1 car.: PI. 8, 22, fig. 1), 1980.332 (9 car.: PI. 8, 22, fig. 2),
1980.333 (9 LV: PI. 8, 22, fig. 3), 1980.334 (d RV: PI. 8, 24, fig. 1), 1980.335 (9 RV: PI. 8, 24, fig. 2),
1980.336 (9 LV: PI. 8, 24, fig. 3), 1980.337 (d RV: PI. 8, 26, fig. 1), 1980.338 (neotype, 9 RV: PI. 8, 26,
fig. 2), 1980.339 (9 RV: PI. 8, 26, fig. 3), 1980.340 - 343 (d copulatory appendages: Text-figs. 2 - 5).

Explanation of Plate 8, 20

Fig. 1, d LV, ext. lat. (1980.328, 320 pm long); fig. 2, 9 LV, ext. lat. (1980.329, 340 pm long); fig. 3, 9 RV, ext. lat. (1980.
330, 340 pm long).

Scale A (100 pm', x 1 72), figs. 1 - 3.

■t— 1-4- ■

•I Hi-

Stereo-Atlas of Ostracod Shells 8,21 Hemicytherura videns (3 of 8)

Figured specimens: Nos. 1980.328 - 332, 337, 341 collected by the author in Cyprus, October 1973: nos. 1980.328 - 330,
(contd.) 332, 337 from Kyrenia, approx, lat. 35° 20' N, long. 33° 20' E, on calcareous algae, water temperature
26°C, depth 1.5m; nos. 1980.331, 341 from Amathus, approx, lat. 34° 42' N, long. 33° 09' E, on
filamentous algae, water temperature 27°C, depth lm. Nos. 1980.333 - 336, 342 collected by
R. H. Bate from algae in rock pools at Kelibia, Tunisia, approx, lat. 36°50' N, long. 11° 05' E. Nos.
1980.338.340, from the type locality, were made available by G. Bonaduce. Nos. 1980.339, 343 from
Tenerife, Canary Islands, approx, lat. 28° 15' N, long. 16° 35' W; collected by M. Linley.

Diagnosis: (Using the numerical notation of Hoskin, 1975; see Text-fig. 1). Distinct central cluster of five fossae (l1 ,
1" , 2, 3" , 511) separated from surrounding fossae by a wide murus. Carapace highest anteriorly; in ventral
view, parallel-sided, tapering abruptly of length from anterior. Distal lappet of male copulatory
appendage, long, curved and acuminate.

Remarks: Hoskin ( Revta esp. Micropaleont., 7, 91 1975) distinguished three species of Hemicytherura (H.

cellulosa, H. videns and H. aegyptica) on the basis of the variation in fossal patterns. His numerical
notation of the lateral fossae drew attention to the similarity between H. videns from the Mediterranean
and specimens of Hemicytherura from Ireland which are now considered to belong to a distinct species,
H. hoskini (see Horne, Stereo-Atlas of Ostracod Shells, 8,13,1981).//. videns may be distinguished from
H. hoskini by differences in the arrangement of the fossae, in outline and in the detailed structure of the
male copulatory appendages. In lateral view, H. videns is less produced anteriorly and has a more
pronounced caudal process whilst in H. hoskini, the right valve is more evenly arched dorsally. In ventral
view, H. videns is quadrate, tapering anteriorly for about % of its length, whilst H. hoskini is more
cuneate, tapering anteriorly for about 2/3 of its length. Both H. cellulosa and H. aegyptica differ from H.
videns in lateral and ventral outline and in the detailed structure of the male copulatory appendages. In
addition, H. cellulosa exhibits subdivision of fossa 9 and H. aegyptica is characterised by multiple
subdivision of fossa 3. Some specimens of H. videns show incipient or partial subdivision of fossa 8 and
most specimens possess a ‘ghost’ murus sub-dividing fossa 3'. Rarely fossae' 3 and 12 coalesce anteriorly.

Explanation of Plate 8, 22

Fig. 1, juv. -1 car., ext. It. lat. (1980.331, 300 pm long); fig. 2, 9 car., ext. vent. (1980.332, 330 pm long); fig. 3, 9 LV, int. lat.

(1980.333, 370 pm long).

Scale A (100 pm\ x 1 72), figs. 1 - 3.

TT'

-+-+■

+ t-1

Stereo-Atlas of Ostracod Shells 8, 20

Stereo-Atlas of Ostracod Shells 8, 22

Hemicytherura videns (4 of 8)

Hemicytherura videns (2 of 8)

Stereo-Atlas of Ostracod Shells 8, 23

Hemicytherura videns (5 of 8)

Remarks: The carapaces of Tunisian specimens of H. videns are larger than those from other localities, but are
( contd .) identical in all other respects. Specimens from Tenerife, whilst having fossal patterns identical to those
seen in individuals from the Mediterranean, differ very slightly in the shape of the carapace; the female
right valves of the Tenerife specimens are more evenly arched and have shorter caudal processes (see PI. 8,
26). Also, the Tenerife specimens differ somewhat from the Mediterranean specimens in the detailed
shape of the male copulatory appendages (see Text-figs. 2 - 5). At present, these minor differences are
considered to be intraspecific.

Material from the Black Sea was not
available to the present author, but specimens
illustrated by Schornikov (in: Mordukhai-
Boltovskoi, F. D. (Ed.) Identification key to
the fauna of the Black and Azov Seas, 2, 163,

Kiev) as H. videns probably do belong to this
species, despite minor differences apparent in the
fossal patterns and in the detailed structure of the
male copulatory appendage.

Since H. videns closely resembles several
other species and because Muller’s specimens are
believed to have been lost (Athersuch, Pubbl. Staz.
zool. Napoli, 40, 1978) a neotype is designated Text-fig. 1. Hemicytherura videns (Muller),
and illustrated herein (PI. 8, 26, fig. 2). Generalised sketch of a 9 RV with Hoskin’s 1975

numerical notation of the fossae.

Explanation of Plate 8, 24

Fig. 1, 6 RV, ext. lat. (1980.334, 370 pm long); fig. 2, 9 RV, ext. lat. (1980.335, 375 pm long);fig. 3, 9 LV, ext. lat. (1980.
336, 375 pm long).

Scale A (100 ,um;x 172), figs. 1 - 3.

— ! — ! — -• —

Stereo-Atlas of Ostracod Shells 8, 25

Hemicytherura videns (7 of 8)

Distribution: Recent, phytal marine species: Italy, Cyprus, Tunisia, Tenerife (herein); Adriatic (Uffenorde, ' op.cit.)\
? Black Sea (Schornikov, op.cit.).

Text-figs. 2-5. Hemicytherura videns (Muller). 6 copulatory appendages. 2, Salerno, Italy (1 980. 340).3,Amathus, Cyprus
(1980.341). 4, Kelibia, Tunisia (1980.342). 5, Tenerife, Canary Islands (1980.343).

Dissections and drawings by D. Horne.

Explanation of Plate 8, 26

Fig. 1 , 6 RV, ext. lat. (1980.337, 320 pm long); fig. 2, 9 RV, ext. lat. (neotype, 1980.338, 350 pm long); fig. 3, 9 RV, ext. lat.
(1980.339, 350 pm long).

Scale A ( 1 00 pm ; x 1 72), figs. 1 - 3.

Hemicytherura videns (6 of 8)

Stereo- Atlas of Ostracod Shells 8, 24

Stereo-Atlas of Ostracod Shells 8, 26

Hemicytherura videns (8 of 8)

Stereo-Atlas of Ostracod Shells 8 (5) 27 - 32 (1981)

595.337.14 (119.9) (261.26:162.054.00 + 056.02 + 050.02+ 161.059.11) : 551.35

Hemicy there villosa (1 of 6)

1928

1940

ON HEMICYTHERE VILLOSA (SARS)

by John Athersuch & John E. Whittaker

(B.P. Research Centre, Sunbury and British Museum (Natural History), London)

Genus Hemicy there Sars, 1925

Type-species (designated by Edwards, 1944): Cythereis villosa Sars, 1866.

Auris (pars), A. Neviani, Memorie Accad. pont. Nuovi Lincei, ser. 2, 11, 72 Qunior homonym of Auris Klein, 1753,
Mollusca).

Eucythereis (pars), W. Klie, Kieler Meeresforsch., 3, 416.

Diagnosis: Carapace subquadrate, inflated; surface pitted or reticulate. Radial pore canals straight and numerous.

Two frontal muscle scars, adductor scars in vertical row of four with upper, and sometimes lower, of
middle two subdivided. Hinge with elongate, lobate, posterior tooth/socket, crenulate median element and
dorsally elongate anterior tooth/socket.

Hemicy there villosa (Sars, 1866)

Cythereis villosa sp. nov. G. O. Sars, Fork. VidenskSelsk. Krist,, 1865, 42.

Cy there villosa (Sars);G. S. Brady, Trans. Linn. Soc. Lond., 26, 41 1, pL 29, figs. 28 - 32.

Hemicythere villosa (Sars); G. O. Sars, An account of the Crustacea of Norway, vol. 9, Ostracoda, Bergen Museum
parts 1 1, 12, 182, pi. 84.

Cythereis (Eucythereis) villosa Sars;0. Elofson, Zool. Bidr. Upps., 19, 287.

Eucythereis villosa (Sars); A.P.C. de Vos, Arch. Zool. exp. gen., 95, 32, pL 14, figs, la - f.

Hemicythere villosa (Sars); F. Swain,/. Paleont., 37, 828, pL 99, figs. 4, 6; text-fig. 10c.

Hemicythere arborescens (Brady); E. Robinson, in R. H. Bate & E. Robinson, A Stratigraphic Index of British
Ostracoda, Geol. J., Special Issue 8, 462, pi. 3, figs. 3a, b. (non Cythere arborescens Brady, 1865 = nomen dubium; see
Remarks, below).

Explanation of Plate 8, 28

Fig. 1 , 6 LV, ext. lat. (1980.422; 690 pm long); fig. 2, 9 RV, ext. lat. (1980.423; 730 pm long); fig. 3, 9 car., It. lat. (1980.424;
750 pm long).

Scale A (250 pm\ x 80), figs. 1 - 3.

1866

1868

1925

1941
1957
non 1963
1978

Stereo-Atlas of Ostracod Shells 8, 29

Hemicythere villosa (3 of 6)

Type specimens: The types of H. villosa are not amongst the Sars’ Collection at Oslo University and are presumed lost.

However, the descriptions and illustrations of Sars (1866, 1925) adequately define this species and it is
not considered necessary to designate a neotype.

Type locality: Christianafjord (Oslofjord), S Norway; Recent.

Figured specimens: Brit. Mus. (Nat. Hist.) nos. 1980.422 (d LV and soft-parts: PI. 8, 28, fig. 1 ; text -fig. 4), 1980.423 (9 RV:
PI. 8, 28, fig. 2), 1980.424 (9 car.: PI. 8, 28, fig. 3), 1980.425 (9 car.: PI. 8, 30, fig. 1), 1980.426 (9 RV:
PI. 8, 30, fig. 3), 1980.427 (d soft-parts: text-figs. 1 - 3), OS 9162 (9 RV: PI. 8, 30, fig. 2).

1980.422 from Bass Rock, Firth of Forth, E Scotland, approx, lat. 56° 05' N, long. 02° 38' W,
ex T. Scott Coll., collected 1893. 1980.423 was collected from Fucus vesiculosus with epiphytes, 29th
May 1968 (salinity 33.2%c, temp. 19°C) and 1980.424 - 426 from the holdfasts of Laminaria saccharina
26th May 1969 (salinity 31.4%c, temp. 13°C), both on the Fleet, Dorset, S England, approx, lat. 50° 36 1 N,
long. 02° 30' W, collected by J. E. Whittaker. 1980.427 was collected by J. Athersuch from mixed
intertidal algae, at Robin Hood’s Bay, N E England, approx, lat. 54° 26' N, long. 00° 32' W, 22nd
September 1979. OS 9162, from the Nar Valley Clay, Norfolk, E England, approx, lat. 52° 43' N, long.
00° 31' E, is Hoxnian in age and was collected by J. E. Robinson.

Diagnosis: Carapace surface covered with large subrounded fossae or clusters of small pits; tendency to become
reticulate anteriorly and posteriorly. In female, posteroventral fossae form depressed groups; postero-
dorsal protuberance developed. In male, posteroventral fossae not depressed; posteroventral
protuberance developed. Strong, smooth dorsal margin. Seen dorsally, tapering anteriorly for two-thirds
of length; rounded anteriorly, more truncate posteriorly. Female slightly longer, but proportionately
much higher than male. Copulatory appendage with large distinctive lappet and long ductus ejaculatorius.

Explanation of Plate 8, 30

Fig. 1, 9 car., ext. dors. (1980.425; 750 pm long); fig. 2, 9 RV, ext. lat. (OS 9162; 710 pm long); fig. 3, 9 RV, int. lat. (1980.

426; 740 ^m long).

Scale A (250 pm\ x 80), figs. 1 - 3.

Hemicythere villosa (2 of 6)

Stereo-Atlas of Ostracod Shells 8, 28

Stereo- Atlas of Ostracod Shells 8, 30

Hemicythere villosa (4 of 6)

Stereo-Atlas of Ostracod Shells 8, 31 Hemicy there villosa (5 of 6)

Remarks: We consider that the specimens illustrated by Robinson (1978) under the name Hemicy there arborescens
(Brady, 1865) are conspecific with H. villosa (Sars). The true identity of H. arborescens is not known
since the type specimens from the Hoxnian Brickearth of the Nar Valley, Norfolk, are not in Brady’s
collections either at the Hancock Museum, Newcastle-upon-Tyne, or the Brit. Mus. (Nat. Hist.), and are
presumed lost. Brady’s (Ann. Mag. nat. Hist., ser. 3, 16, 190, pi. 9, figs. 5 - 8, 1865) original illustrations
are somewhat confusing in that they could represent any one of a number of species including H. villosa
and Aurila convexa (Baird, 1850). In fact it was the latter which Brady himself (1868, op. cit., 401)
considered to be a senior synonym of Cy there arborescens. Consequently, we prefer to regard this name as
a nomen dubium until it can be assigned to a definite taxon. This may be possible when the current re-
investigation of the Nar Valley ostracod faunas by E. Robinson (pers. comm.) is completed.

Distribution: Recent: coasts of Britain and N Europe associated with littoral, marine algae and sediment; sub-Recent:
Holland (Wagner, Sur les Ostracodes du Quatemaire recent des Pays-Bas . . . ., Mouton & Co., The Hague,
56, 1957); Hoxnian (as H. arborescens (Brady)), Nar Valley Clay, Norfolk and Slindon Sands, Sussex,
England (Robinson, op. cit.).

-f-i— 1~

Stereo-Atlas of Ostracod Shells 8,32

Hemicythere villosa (6 of 6)

copulatory appendage (1980.422).

Stereo-Atlas of Ostracod Shells 8 (6) 33 - 36 (1981)
595.337.14 (1 19.3) (485: 161.058.1 1) : 551.351 + 552.52

Cytheropteron elofsoni (1 of 4)

ON CYTHEROPTERON ELOFSONI LORD sp. nov.

by Alan Lord

(University College, London)

Cytheropteron elofsoni sp. nov.

Holotype: Brit. Mus. (Nat. Hist.) OS 7688, RV.

[Paratypes: Brit. Mus. (Nat. Hist.) OS 7689, OS 7690]

Type locality: Sample depth 8.00 - 8.05m, Brastad Borehole, NE, of Lyskil, SW Sweden; lat. 58° 22' 50" N, long.
11° 33' 01" E. Late Weichselian, Pleistocene.

Derivation of name: In honour of Dr. Olof Elofson, the distinguished student of Swedish Ostracoda.

Figured specimens: Brit. Mus. (Nat. Hist.) nos. OS 7688 (holotype, RV: PI. 8, 34, fig. 1 ; PI. 8, 36, figs. 1,2, 3, 5), OS 7689 (RV:
PI. 8, 34, fig. 3; PI. 8, 36, fig. 6), OS 7690 (RV: PI. 8, 34, fig. 2; PI. 8, 36, fig. 4). All specimens from type
locality and horizon.

Explanation of Plate 8, 34

Fig. 1, RV, ext. lat. (holotype, OS 7688, 706 pm long); fig. 2, RV, int. lat. (paratype, OS 7690, 470 pm long); fig. 3, RV, ext.
lat. (paratype, OS 7689, 575 pm long).

Scale A (100 pm; x 95), fig. 1 ; scale B (100 pm; x 110), fig. 2; scale C (100 pm; x 135), fig. 3.

ill-]

\

-* — ) — i-

Stereo-Atlas of Ostracod Shells 8, 35

Cytheropteron elofsoni (3 of 4)

Diagnosis: Species of Cytheropteron with distinctive combination of smooth lateral valve surface and a strongly
protuberant grooved and ridged spine.

Remarks: Similar shape to C. crassipinnatum Brady & Norman, ( Scient . Trans. R. Dubl. Soc., ser. 2,4,212,1889)
but that species has surface ornament and different spine morphology. C. pipistrella Brady, (Trans, zool.
Soc. Lond., 10, 8/1, 404,1878) also has similar valve outline but differs in spine morphology and
orientation. Another species with comparable outline is C. sedovi Schneider, as illustrated by L ev(Uchen.
Zap. nauchno-issled. Inst. Geol Arkt., Paleont. Biostrat., 28, PI. 1, fig. 7, 1969 ) and (?) by Whatley &
Masson (Revta esp. Micropaleont. 11, 251 and PL 7, figs. 15 - 19,1979), the latter material has a strong
reticulate ornament. Cytheropteron elofsoni occurs with Eucytheridea punctillata (Brady)
Normanicy there leioderma (Norman), Acanthocythereis dunelmensis (Norman), Palmenella limicola
(Norman), and C. nodosoalatum Neale & Howe in cool, probably shallow water assemblages. Probably
extinct.

Explanation of Plate 8, 36

Fig. 1, RV, ext. dors, (holotype, OS 7688, 706 pm long); fig. 2, RV, -posterodors.- obi. (holotype, OS 7688, 706 pm long); fig.
3, RV, spine vent, detail (holotype, OS 7688, 706 pm long); fig. 4, RV, int. lat. hinge detail (paratype, OS 7690, 470 pm long);
fig. 5, RV, ext. vent, (holotype, OS 7688, 706 pm long); fig. 6, RV, ext. lat. detail (paratype, OS 7689, 575 pm long).

Scale A (100 pm; x 95), figs. 1,2; Scale B (AQpm; x 250), fig. 3; Scale C (200 pm; x 210), fig. 4; Scale D (100//m; x 95), fig. 5 ;
Scale E (AQpm; x 300), fig. 6.

L

T

Stereo- Atlas of Ostracod Shells 8, 34

Cytheropteron elofsoni (2 of 4)

Stereo-Atlas of Ostracod Shells 8, 36

1

Cytheropteron elofsoni (4 of 4)

■

- + ->-■ r-

Stereo-Atlas of Ostracod Shells 8 (7) 37 - 40 (1981)
595.337.14 (1 19.3) (485: 161 .058.1 1) : 551.351 + 552.52

Cytheropteron brastadensis (1 of 4)

ON CYTHEROPTERON BRASTADENSIS LORD sp. nov.

by Alan Lord

(University College, London)

Cytheropteron brastadensis sp. nov.

Holotype: Brit. Mus. (Nat. Hist.) OS 7685 LV.

[Paratypes: Brit. Mus. (Nat. Hist.) OS 7686, OS 7687] .

Type locality : Sample depth 6.50 - 6.55m, Brastad Borehole, N E, of Lysekil, S W Sweden; lat. 58° 22' 50" N,long.
1 1° 33' 01" E. Late Weichselian, Pleistocene.

Derivation of name: In reference to the type locality.

Figured specimens: Brit. Mus. (Nat. Hist.) OS 7685 (holotype, LV: PI. 8, 38, figs. 1 , 2; PI. 8, 40, figs. 3 - 7), OS 7686 (RV: PI.

8, 38, fig. 3; PI. 8, 40, fig. 1), OS 7687 (RV: PI. 8, 40, fig. 2). All specimens from type locality and
horizon.

Diagnosis: A species of Cytheropteron with a blade-like alate extension, a posterodorsal ridge and partial punctation
of lateral surface; posteroventral margin complexly ornamented.

Explanation of Plate 8,38

Fig. 1 , LV, ext. lat. (holotype, OS 7685, 5 1 2 pm long); fig. 2, LV, int. lat. (holotype, OS 7685, 5 1 2 pm long); fig. 3, RV, ext.
lat. (paratype, OS 7686, 531 /un long).

Scale A ( 1 00 ^m; x 1 20), figs. 1 - 3.

Stereo-Atlas of Ostracod Shells 8, 39

Remarks: Similar in shape to C. biconvexa Whatley and Masson
( Revta esp. Micropaleont, 11, 229, 1979) from the
Pleistocene of the North Sea, but larger and differs in
surface ornament and hingement. Also comparable
with the recent C. hadriaticum Bonaduce, Ciampo
and Masoli ( Pubbl . Staz. zool. Napoli, 40 suppl.,
93, 1975) from the Adriatic Sea, but larger, less
uniformly punctate on lateral surfaces and differs in
hingement. The Recent form C. excisum Bonaduce,
Masoli and Pugliese (Pubbl. Staz. zool. Napoli, 40, 21
1976 ) from the Gulf of Aqaba differs markedly in
shape posteriorly, but is poorly known.

Hinge a form of antimerodont structure with
(RV) an anterior bifid tooth, an arched (?) locellate
median element with a straight locellate posterior
part and 3 posterior teeth. Complex punctation with
intervening ridges in posteroventral region (PI. 8, 40,
figs. 6, 7). Probably extinct; occurs in similarly
structured species associations as C. elofsoni ( Stereo-
Atlas of Ostracod Shells, 8, 33 - 36, 1981).

Cytheropteron brastadensis (3 of 4)

n

O

A. LV (from PI. 8, 38, fig. 2)
(Holotype, OS 7685).

Text - fig. 1
muscle scars of
c. brastadensis
sp. nov. (x500).

[ y

a

O

B. RV (from PI. 8, 40, fig. 1) (OS 7686).

Explanation of Plate 8, 40

Fig. 1 , RV, int. lat. (paratype, OS 7686, 531 pm long); fig. 2, RV, ext. dors, (paratype, OS 7687, 525 pm long); figs. 3-7, LV,
(holotype, OS 7685, 512 pm long): fig. 3, ext. lat. detail; fig. 4, post, hinge detail; fig. 5, vent, detail; fig. 6, posterovent. obi.;
fig. 7, detail of upper right area of fig. 6.

Scale A (100 pm \ x 1 20), figs. 1,2; scale B (40 pm\x 260), fig. 3 ; scale C (25 pm \ x 400), figs. 4, 5; scale D (40 /im;x 200), fig.
6; scale E (4 pm\ x 2000), fig. 7.

Cytheropteron brastadensis (4 of 4)

Stereo-Atlas of Ostracod Shells 8, 38

Cytheropteron brastadensis ( 2 of 4)

Stereo-Atlas of Ostracod Shells 8, 40

-+-*•- r-

Stereo-Atlas of Ostracod Shells 8 (8) 41 - 44 (1981)

595.337 (116.222) (44:162.049.01 + 420:162.051.03) : 551.35 (26.03) + 552.54

ON KINKELINELLA MALZI (DEPECHE)

by Lesley M. Sheppard
(British Museum (Natural History) London)

Kinkelinella malzi (1 of 4)

Kinkelinella malzi (Depeche, 1973)

1973 Glyptocythere ? malzi F. Depeche, Rev. Micropale ont., 15, 4, 222, pi. 2, figs. 9-13.

Holotype: University of Paris no. FD 029.

Type locality: Mames de Port-en-Bessin, Port-en-Bessin, Normandy; L Bathonian.

Figured specimens: Brit. Mus. (Nat. Hist.) nos. OS 11483 (9 LV: PI. 8, 42, fig. 2), OS 11811 (d LV: PI. 8, 42, fig. 1),
OS 11812(9 LV: PI. 8, 44, fig. 1), OS 11813 (juv. LV: PI. 8, 44, fig. 3), OS 11814 (d car.: PI. 8, 44, fig.
2), OS 1 1815 (9 RV: PI. 8, 42, fig. 3). All specimens are from the L Bathonian at the type locality.

Diagnosis: Species of Kinkelinella with alate ventrolateral extension of valves and coarse reticulate ornamentation
produced by dorsoventral trending ridges and grooves. Shallow subcentral sulcus situated in front of ala.
Smooth eye node.

Explanation of Plate 8, 42

Fig. 1, d LV, ext. lat. (OS 11811, 520 pm long); fig. 2, 9 LV, ext. lat. (OS 11483, 530 pm long); fig. 3, 9 RV, ext. lat.
(OS 11814, 370 pm long).

Scale A (100 ^um; x 125), fig. 1 ; scale B (200 pm; x 115), figs. 2, 3.

Stereo-Atlas of Ostracod Shells 8, 43

Kinkelinella malzi (3 of 4)

Remarks: Kinkelinella and Ektyphocythere represent two morphological groups with strikingly different ornamental
patterns which Bate & Coleman (Bull. Geol. Surv. G.B., 55, 14, 1975) consider are congeneric but that
each group is developed to such an extent that a subgeneric category is required for each one ( Kinkelinella
having an ornamentation of dorsoventral trending elements and Ektyphocythere with a triangular
ornamentation dominating). I would go one step further and suggest that the differences in ornamentation
(or more correctly in sculpture when dealing with a higher order of importance than purely specific) are
sufficient to distinguish the two as separate genera. As a genus , Kinkelinella is known from the Toarcian,
Aalenian and Bajocian of Europe (Malz, Senck. leth., 47, 4, 385 - 404, 1966); K. malzi thus represents the
youngest record of the genus.

Although the muscle scars have not been observed in this species it is here assigned to
Kinkelinella on the strength of the ventrolateral overhang of the valves, the compressed anterior and
posterior marginal borders, the simple, straight marginal pore canals, the antimerodont hinge and presence
of an eye node.

The alate extensions of the valves in K. malzi are more pronounced than in any other species of
the genus and associated with these are subcentral sulci which are not seen in other species. The well
developed alae may simply be morphological adaptations which evolved as a result of inhabiting a muddy
sea floor type of environment in which it was advantageous to increase the surface area/volume ratio of
the carapace to prevent sinking. Such an environment was common in the L Jurassic (Lord, Bull, geol.
Soc. Denm., 21,319 - 336, 1972) and also in the lowermost Bathonian.

Distribution: Known from the L Bathonian of Normandy and the L Bathonian, L Fuller’s Earth of Dorset.

Explanation of Plate 8, 44

Fig. 1, 9 LV, int. lat. (OS 11812, 510 pm long); fig. 2, d car., ext. dors. (OS 11814, 570 pm long); fig. 3, juv. LV, ext. lat.

(OS 11813, 370 pm long).

Scale A (100 pm; x 117), fig. 1 ; scale B (100 pm; x 105), fig. 2; scale C (100 pm; x 135), fig. 3.

Stereo-Atlas of Ostracod Shells 8, 42

Kinkelinella malzi (2 of 4)

Kinkclinella malzi (4 of 4)

Stereo-Atlas of Ostracod Shells 8, 44

Stereo-Atlas of Ostracod Shells 8 (9) 45 - 50 (1981) Paralimnocy there vulgaris (1 of 6)

595.337.14 (119.4 + 1 19.9)(931 : 163.045.1 68 + 163.044.170) : 551.312.4

ON PARA LIMNOCYTH ERE VULGARIS McKENZIE & SWANSON sp. nov.

by Kenneth McKenzie & Kerry Swanson
(Riverina College of Advanced Education, Australia,
and University of Canterbury, New Zealand)

Paralimnocy there vulgaris sp. nov.

Holotype: New Zealand Geological Survey no. TO 1 135.1 , car.

[Paratypes: N.Z. Geological Survey nos. TO 1135.2 — 15. Figured soft parts: Univ. of
Canterbury Geol. Dept. no. UCF 1271] .

Type locality: Limestone pit, southeastern end of the Crown Terrace. Kawarau Gorge, South Island, New Zealand; lat.

45° 00' S, long. 168° 54' E. N.Z. Geol. Surv. Fossil Record No. L41/f 147. Late Quaternary lacustrine
silts, sandy silts and limestones.

Derivation of name: The most common species in the Kawarau Gorge sequence.

Explanation of Plate 8, 46

Fig. 1, RV, int. lat. (paratype, TO 1135.2, 460 pm long); fig. 2, car. dors, (paratype, TO 1135.4, 470 pm long).
Scale A (200 pm\ x 200), fig. 1 ; scale B (200 pm\ x 1 70).

I Hi-'

+ + - +

Stereo-Atlas of Ostracod Shells 8, 47

Paralimnocy there vulgaris (3 of 6)

Figured specimens: N.Z. Geol. Surv. nos. TO 11352.2 (car.: PI. 8, 46, fig. 1), TO 1135.3 (car.: PI. 8, 48, fig. 2), TO 1135.4
(car.; PI. 8, 46, fig. 2), TO 1135.5 (car.: PI. 8, 48, fig. 1). From Crown Terrace, Kawarau Gorge, South
Island, New Zealand. UCF. 1271 (ovig. appendages: text-figs. 1 - 2). Dip net

sample. From small temporary pond near Lake Tekapo, South Island, New Zealand; lat. 43° 54 1 S, long.
170° 35' E.

Diagnosis: Elongate ovate carapace. Dorsal margin straight in males, broadly arched in females. Antero and postero-
ventral margins well rounded. The characteristic feature of the soft anatomy which distinguishes
Paralimnocy there from other limnocytherine genera is the absence of long bristles on the posterior
margins of the three walking legs (PI — P3) as noted by Klie (Tierwelt Dtl., 34, 1 53, 1938). More recently
Petkovski ( Acta Mus. maced. Sci. nat., 12, 5 - 12, 1969) has recorded the presence of a rudimentary
bristle on the P3 protopods of two Yugoslavian species but Klie’s observation remains true for the
New Zealand species.

Distribution: Known from only two localities in New Zealand; as a fossil at the type locality and living in a small pond
near the glacially derived, alpine Lake Tekapo; lat. 43° 54' S. long. 170° 35' E. Alt. 708 metres.

Explanation of Plate 8, 48

Fig. 1, RV, int. lat. (paratype, TO 1135.5, 450 pm long); fig. 2, LV, int. muse. sc. (paratype, TO 1135.3 460 pm long).
Scale A (200 pm\ x 200), fig. 1 ; scale B (25 pm\ x 300), fig. 2.

Stereo-Atlas of Ostracod Shells 8 (10) 51 - 54 (1981) Lomatobolbina vonhachtorum (1 of 4)

595.336.13 (1 1 3.3 1 3>(26 1.27:161 .054.08) : 551.35 (26.03)

ON LOMATOBOLBINA VONHACHTORUM SCHALLREUTER sp. nov.

by Roger E. L. Schallreuter
(University of Hamburg, German Federal Republic)

Lomatobolbina vonhachtorum sp. nov.

Holotype: Geologisch-Palaontologisches Institut und Museum, University of Hamburg, no. 2445, 9 RV.

[Paratype: Ibid. no. 2446] .

Type locality: Upper Ordovician Ojlemyrflint erratic boulder no. SylOO of the Kaolinsand (Pliocene — Pleistocene), near
Braderup, Isle of Sylt (N Frisian Is., N Sea), Germany; lat. 54° 56' N, long 8° 21' E.

Derivation of name: In honour of Inge-Maria and Ulrich von Hacht, Hamburg.

Figured specimens: Geologisch-Palaontologisches Institut und Museum, University of Hamburg (GPIMH) nos. 2445 (9 RV:
PI. 8, 52, figs. 1 , 2) and 2446 (tecnomorphic LV: PI. 8, 54, figs. 1, 2). Both from type locality; coll, by
Ulrich von Hacht, 1980.

Explanation of Plate 8,52

Figs. 1 , 2, incomplete 9 RV (holotype, GPIMH 2445, 1 040 pm long): fig. 1 , ext. lat.; fig. 2, ext. vent. obi.
Scale A (100 pm\ x 95), figs. 1 , 2.

i — (--t-

Stereo-Atlas of Ostracod Shells 8, 53

Lomatobolbina vonhachtorum (3 of 4)

Diagnosis: Length up to 1040 /im (holotype). Tecnomorphs without velum and histium. Anteroventral and anterior
centroventral region of females with velar flange continued in posterior centroventral region by short
histial flange; velum in subhistial part reduced, developed only as small ridge; uniting point of velar ridge
and velar/histial flange behind S2 ventral of posteroventral lobe (L3). Antra with puncta. Surface
reticulate.

Remarks: Lomatobolbina was only previously known from the Viruan (Baltoscandian Middle Ordovician) of
Sweden. The type-species of Lomatobolbina Jaanusson (Bull. geol.Instn. Univ. Upsala, 37 (3/4) resp.
Publ. Palaeont. Inst. Univ. Upsala , 17, 395, 1957), Ctenobolbina mammillata Thorslund (Sver. geol.
Unders. Ser. C 436 [= Arsbok 34 (6)] , 174, 1940) is larger (up to 1400 pm) and differs clearly by the
presence of a tecnomorphic velar keel, a more anterior position of the joining point of the histial and velar
dolon (cf. Jaanusson, Ibid. 43 (6/8) 7, 1967 resp. Ibid. 66, 1966, text -fig. 4G-H), and the ornamentation
(“minute granules, arranged in rows giving the ornamentation a minutely lineate or reticulate
appearance”, Jaanusson , op. cit., 3981957). In contrast to L. mammillata in the new species the velar
dolon behind the joining point is reduced to a ridge — as in Pentagona veloreducta Schallreuter ( Geologie
16 (5), 621 1967).

Distribution: Known from the type locality and Ojlemyrflint erratic boulder (G30) from the Isle of Gotland (Baltic
Sea).

Explanation of Plate 8, 54

Figs. 1, 2, tecnomorphic LV (paratype, GPIMH 2446 1000 pm long without marginal and acroidal spines): fig. 1, ext. lat.; fig. 2,
ext. vent. obi.

Scale A (100 pm\ x 90), figs. 1 , 2.

2b

Stereo- Atlas of Ostracod Shells 8, 54 Lomatobolbina vonhachtorum (4 of 4)

2b

Stereo-Atlas of Ostracod Shells 8 (1 1) 55 - 62 (1981) Polycope frigida (1 of 8)

595.339.2 (119.9X268.42:161.076.02 + 161.073.11 + 162.069.04 + 7161.073.08) : 551.353 (24.08.2937 - 3709)

ON POLYCOPE FRIGIDA NEALE sp. nov.

by John W. Neale
(University of Hull, England)

Poly cope frigida sp. nov.

Holotype: University of Hull coll. no. HU.286.R.la, b, 9 car. (a = valves, b = soft parts).

[Paratypes HU.286.R.2a, b — 6a, b] .

Type locality : CENTOB NORBI Station 7, DS 14 between East Greenland and Spitsbergen, dredge sample from
76° 02.7' N, 01° 47.0' W to 76° 02.5' N, 01° 43.2' W, a distance of 1 ,805m, depth 3,709m. Recent.

Derivation of name: Latin, /Hgiafns, cold, referring to the temperature of its habitat.

Figured specimens: University of Hull coll. nos. HU.286.1a (9 car; RV: PL 8, 56, fig. 1 ; LV: PI. 8, 56, fig. 2), HU.286.R.2a
(9 car; RV: PI. 8, 58, fig. 1), HU.286.R.2b (appendages: PI. 8, 59; PI. 8, 61), HU.286.R.3a (juv. car; RV:
PI. 8, 58, fig. 2), HU.286.R.4a (9 car; RV: PI. 8, 60, fig. 1), HU.286.R.5a (9 car; LV: PI. 8, 60, fig. 2),
HU.286.R.6a (9 car; LV: PI. 8, 62, fig. 2).

Explanation of Plate 8,56

Fig. 1, 9 RV, ext. lat. (holotype, HU. 286. R. la, 744 pm long); fig. 2, 9 LV, ext. lat. (holotype, HU. 286. R. la, 660 pm long).
Scale A (200 pm\ x 1 04), figs. 1 , 2.

Stereo-Atlas of Ostracod Shells 8,57

Poly cope frigida (3 of 8)

Diagnosis: Large, pitted Poly cope with single spine developed in posterodorsal area and well-developed rostral
projection in right valve at about mid-height anteriorly. Mandible pars incisiva strong and broad, furca
somewhat rectangular with 7 main, backwardly curved spines with pilose posterior edges. Male not known
with certainty.

Remarks: This species is unlikely to be confused with any other. The nearest appear to be P. bispinosa Joy and Clark
from the Central Arctic Basin and P. punctata Sars, first described from the Lofoten Islands but since
widely recorded from the Norwegian Coast and elsewhere. The former differs in shape and in having two
spines in the dorsal region of the shell and a rostral projection in the left valve. P. punctata differs in
lacking spines on the shell, shows no rostral projection in either valve and is more equidimensional in
height and width. The appendages also differ in detail as seen by reference to the mandibular palp and the
furca. The present material shows the hinge in Polycope clearly. Closure of the valves (PI. 8, 60, figs. 1,2;
PI. 8, 62, fig. 2) is accomplished by a groove along the anterior, ventral and posterior margins of the RV
accommodating the edge of the LV. This structure ends antero- and postero-dorsally where the RV
develops elliptical terminal locating teeth delimiting the groove below. The terminations of the LV selvage
slot between these teeth and the edge of the RV. The dorsal margin in the RV consists of a straight bar
with a groove below into which the edge of the LV fits.

Distribution: Besides the type locality P. frigida has also been found at CENTOB NORBI Station 10, CP 16,
73° 28.2' N, 10b 06.6' W to 736 28.3 1 N, 10° 02.6' W at 2,937m. On the basis of the soft parts specimens
from Station 4, DS 09, 69° 09.8 'N, 04° 32.2 'E to 69° 09 .4 'N, 04° 33.01 E between Jan Mayen and
Norway at 3,211m are placed here. The males are unknown but a single decalcified specimen of Polycope
from Station 9, KR 19, 73° 37.2' N, 07° 26.3 1 W at 3,294m is probably the male of this species. It has a
distinctive, easily recognised furca. Present knowledge suggests that P. frigida is a deep, cold-water form
which has so far been recovered from depths between 2,937 and 3,709 metres. At the type locality over
50 specimens of the species were associated with six specimens of Cytheropteron alatum Sars.

Explanation of Plate 8,58

Fig. 1, 9 RV, ext. lat. (paratype, HU.286.R.2a, 720 pm long); fig. 2, RV juv., ext. lat. (paratype, HU.286.R.3a, 553, ^um long).
Scale A (200 ^m; x 101), fig. 1: scale B (200 pm\ x 120), fig. 2.

TT

-+

Stereo- Atlas of Ostracod Shells 8, 56

Poly cope frigida (2 of 8)

Poly cope frigida (4 of 8)

Stereo-Atlas of Ostracod Shells 8, 58

P

II

Stereo-Atlas of Ostracod Shells 8, 59

Polycope frigida (5 of 8)

Right Appendages
Q HU. 286. R. 2b

100 um

Explanation of Plate 8, 60

Fig. 1 , 9 RV, int. lat. (paratype, HU.286.R.4a, 760 /um long); fig. 2, 9 LV, int. lat. (paratype, HU. 286. R. 5a, 636 /um long).
Scale A (200 /um; x 97), fig. 1 ; scale B (200 /um; x 104), fig. 2.

— ! — i —

Stereo-Atlas of Ostracod Shells 8, 61

Poly cope frigida (7 of 8)

Right Appendages except where stated. 9HU.286.R.2b

Left Furcal Ramus from right

Explanation of Plate 8,62

Fig. 1 , location of species; fig. 2, 9 LV, int. lat. (paratype, HU. 286. R. 6a, 656 /um long).
Scale A (200 /um; x 104), fig. 2.

Stereo-Atlas of Ostracod Shells 8 (1 2) 63 - 70 (1981) Carinocythereis antiquata (1 of 8)

595.337.14 (1 18.22 + 1 19.1X261:162.057.06 + 560:161.036.36 + 035.33) : 551.35

ON CARINOCYTHEREIS ANTIQUATA (BAIRD)

by Neriman Doruk
(Ege University, Izmir, Turkey)

Carinocythereis antiquata (Baird, 1850)

1850 Cythereis antiquata W. Baird, Ray Soc. London, 176, pi. 20, fig. 2.

1969 Carinocythereis antiquata (Baird); F. Uliczny, Hemicytheridae und Trachyleberididae aus dem Pliozan, Dissert. Univ.
Munich, 73, pi. 4, figs. 9, 10; pi. 16, fig. 5.

1971 Carinocythereis gr. carinata (Roemer) Form B, P. Carbonnel & J. Moyes, Revta esp. Micropaleont., 3, no. 2, 148, pi. 1,
figs. 2a, b; pi. 2, fig. 10.

1972 Carinocythereis antiquata antiquata (Baird); H. Uffenorde, Gottinger Arb. Geol. Paldont., 13, 70, pL 7, fig. 7.

Holotype: Apparently lost (not found in Baird’s collection at the Brit. Mus. (Nat. Hist.)).

Type locality: In sand on the Isle of Skye (precise locality details not known); Recent.

Explanation of Plate 8, 64

Fig. 1 , 9 RV, ext. lat. (Io 5828, 870 pm long); fig. 2, 9 LV, ext. lat. (Io 5882, 658 pm long).
Scale A (250 pm; x 1 00), fig. 1 ; scale B (250 pm; x 1 26), fig. 2.

f T~f

•4— t-4-

h

Hi-

4--L

Stereo-Atlas of Ostracod Shells 8,65

Carinocythereis antiquata (3 of 8)

Figured specimens: Brit. Mus. (Nat. Hist.) nos. Io 5828 (9 RV: PL 8, 64, fig. 1), Io 5882 (9 LV: PI. 8, 64, fig. 2; PI. 8, 66, fig.

1), Io 5883 (d RV: PI. 8, 68 fig. 1), Io 5884 (d LV: PI. 8, 68, fig. 2). The specimen figured in PI. 8, 70, fig.
1 is from the Isle of Skye; Recent; kindly lent by Dr. J. Whittaker from the Norman Collection, Brit. Mus.
(Nat. Hist.), registration number unknown. The specimens figured in PI. 8, 66, figs. 2, 3 and PI. 8, 70, fig.
2, have unfortunately been lost subsequent to photography. Io 5828 and Io 5883 are from drillings off
Iskenderun Bay, S coast of Turkey, depth 600 feet below sea floor; Pleistocene; presumed shallow marine.
Approx, lat. 36° 07' N, long. 36° 01 ' E. Io 5882 and the specimen figured in PI. 8, 66, figs. 2, 3 are from
Kato-Dheutera, Cyprus, collected by the late P. C. Sylvester-Bradley; Pliocene; grey marl with molluscs
and foraminifera, presumed shallow marine. Approx, lat. 35° 05' N, long. 33° 17' E. Io 5884 is from a
dredge sample from Urla Bay, W coast of Turkey; Recent. Approx, lat. 38° 19' N, long. 26° 47 ' E.

Diagnosis: Carapace with continuous ponticulate carina around anterior and ventral margins, discontinuous
ponticulate carina along dorsum and two lateral ponticulate carinae. Shell surface densely turberculate ;
tubercles in form of multifurcate turrets.

Remarks: Three forms have previously been described under the name of C. antiquata (Baird) or C. carinata
(Roemer) by several authors. Uliczny (1969, op. cit.) raised the differences to specific status and for the
third erected a new species, C. bairdii. Carbonnel & Moyes (1971, op. cit.) have recognised two forms,
Form A, C. carinata and Form B, C. antiquata within the specific group of C. carinata (Roemer).

Explanation of Plate 8, 66

Fig. 1, 9 LV, int. lat. (Io 5882, 658 pm long); figs. 2, 3, 9 RV (specimen lost): fig. 2, int. lat.; fig. 3, muse. sc.
Scale A (500 pm; x 102), figs. 1,2; scale B (100 pm; x 346), fig. 3.

Stereo-Atlas of Ostracod Shells 8, 64

Carinocythereis antiquata (2 of 8)

Stereo-Atlas of Ostracod Shells 8, 66

Carinocythereis antiquata (4 of 8)

» i

Stereo-Atlas of Ostracod Shells 8, 67 Carinocythereis antiquata (5 of 8)

Remarks: In the present material the three species are often, though not always, found together. This applies to the
(contd.) Pliocene, Pleistocene and Recent sediments; I cannot, therefore, agree with the observations of Carbonnel
& Moyes. The specimens of the three species all show differences in morphology and in ontogenetic
development; I was unable to find any transitional forms and would therefore agree with Uliczny in
considering these forms to be three distinct species.

Young instars of C. antiquata have the same external morphological characters as adults but are
proportionally higher in the anterior half (see PI. 8, 70, fig. 2).

Sexual dimorhism is pronounced with the males being more elongate and having a shorter
ventrolateral carina, confined to the anterior third of the shell (see PI. 8, 64, fig. 1 , as compared with PI. 8,
68, fig. 1).

The older Pliocene forms of this species appear to be slightly smaller than their Pleistocene and
Recent counterparts (see Text-fig. 1).

Distribution: A widely distributed species, occurring in the Pliocene and Pleistocene of Europe and the Recent of the
Atlantic and E and W Mediterranean.

Editorial comment: Since going to press it was brought to our notice (Dr. J. Athersuch, pers. comm.) that C. antiquata and
C. carinata are at present under revision by G. Ruggieri and that the results of his studies are shortly to be
published; this may affect the specific status of the present species.

Explanation of Plate 8,68

Fig. 1 , 6 RV, ext. lat (Io 5883; 922 /urn long); fig. 2, 6 LV, ext. lat. (Io 5884, 955 /um long);
Scale A (250 /urn; x 90), figs. 1 , 2.

I H-t-

■■H— i-

Sfereo-Atlas of Ostracod Shells 8, 69

Carinocythereis antiquata (7 of 8)

Explanation of Plate 8, 70

Fig. 1, 6 RV, ext. lat. (1184 /xm long); fig. 2, juv. LV, ext. lat. (specimen lost).
Scale A (250 //m; x 76), fig. 1 ; scale B (250 [xm\ x 1 00), fig. 2.

Stereo-Atlas of Ostracod Shells 8, 68

Carinocythereis antiquata (6 of 8)

Stereo-Atlas of Ostracod Shells 8, 70 Carinocythereis antiquata (8 of 8)

fc

Stereo-Atlas of Ostracod Shells 8 (1 3) 71 - 74 (1981) Cistacythereis pokornyi (1 of 4)

595.337.14 (1 18.213) (560: 161.014.37) : 551.35

ON CISTACYTHEREIS POKORNYI (RUGGIERI)

by Neriman Doruk
Ege University, Izmir, Turkey

Cistacythereis pokornyi (Ruggieri, 1962)

1 962 Carinocythereis pokornyi G. Ruggieri, Paleont. Ital., 56, 2, 32, pi. 4, figs. 1 - 4.

1969 Cistacythereis pokornyi hellenica F. Uliczny, Hemicytheridae und Trachyleberididae aus dem Pliozdn, Dissert. Univ.
Munich, 85, pi. 7, figs. 1,2; pi. 16, fig. 10.

Holotype: Instituto di Geologia e Paleontologia, University of Palermo, Italy no. OCR SI 1359, 9 car.

Type locality: Enna, Italy (see Ruggieri, op. cit ); approx, lat. 14° 17' E, long. 37° 34' N. Grey clay with Ostrea, Chlamys
and Balanus; Tortonian.

Explanation of Plate 8,72

Fig. 1, 6 RV, ext. lat. (Io 5223, 655 pm long); fig. 2, 9 LV, ext. lat. (Io 5224, 644 pm long); fig. 3, 6 LV, detail of papillate
solum (Io 5225).

Scale A (250 pm; x 1 22), fig. 1 ; scale B (250 pm; x 1 28), fig. 2; scale C (100 ^m; x 1 20), fig. 3.

Stereo-Atlas of Ostracod Shells 8, 73

Cistacythereis pokornyi (3 of 4)

Figured specimens: Brit. Mus. (Nat. Hist.) nos. Io 5223 (d RV: PI. 8, 72, Fig. 1 ; PI. 8, 74, figs. 2, 3), Io 5224 (9 LV: PI. 8, 72,
fig. 2), Io 5225 (<5 LV: PI. 8, 72, fig. 3; PI. 8, 74, fig. 1). All the specimens were collected by the late
P. C. Sylvester-Bradley from Kato Dheutera, Nicosia Formation, Cyprus; grey marl with abundant
molluscs and foraminifera; Pliocene. Approx, lat. 35° 05' N, long. 33° 17' E.

Diagnosis: Prominent surface ornament of deeply sculptured fossae with high ridges in between.

Remarks: Uliczny (1969, op. cit.) erected C. p. hellenica as a subspecies on the basis of different ornament (the
ventral rib always being joined to the median lateral rib). In the material examined I have found
considerable variation in the details of ornament (including the papillation of the sola) and therefore
suggest that such a subspecies is invalid.

The adductor muscle scars, a subvertical row of 4, show a tendency to subdivide (see PI. 8, 74,

fig. 3).

C. pokornyi differs form C. cebrenidos Uliczny in possessing a more pronounced ornamentation
with the ventral and median ribs tending to be more strongly developed posteriorly.

Distribution: Tortonian: Italy. Plicoene: Cyprus. Pliocene to L. Pleistocene of the Aegean Islands (Sissingh, Utrecht
Micropaleont. Bull, 6, 99, pi. 7, fig. 2).

Explanation of Plate 8, 74

Fig. 1, 6 LV, int. lat. (Io 5225, 670 long); figs. 2, 3, 6 RV, (Io 5223, 641 pm long): fig. 2, int. lat.-, fig. 3, muse. sc.
Scale A (250 pm; x 100), fig. 1 ; scale B (250 pm; x 106); scale C (100 pm; x 350), fig. 3.

Stereo-Atlas of Ostracod Shells 8, 74

Cistacythereis pokornyi ( 4 of 4)

Stereo- Atlas of Ostracod Shells 8, 72

Cistacythereis pokornyi (2 of 4)

I I I

Stereo-Atlas of Ostracod Shells 8 (14) 75 - 78 (1981) Cistacythereis equivalvis (1 of 4)

595.337.14 (118.213) (560:161.037.35) : 551.35

ON CISTACYTHEREIS EQUIVALVIS DORUK sp. nov.

by Neriman Doruk
(Ege University, Izmir, Turkey)

Cistacythereis equivalvis sp. nov.

Holotype: Brit. Mus. (Nat. Hist.) Io 5220, d LV.

Type locality: Road cutting, 5km E of Salbas, Turkey, approx, lat. 37° 07' N, long. 35° 10' E. Grey marl with abundant
molluscs and foraminifera, presumed shallow marine; Tortonian.

Derivation of name: Latin , pertaining to the valves of equal size.

Figured specimens: Brit. Mus. (Nat. Hist.) nos. Io 5219 (9 RV: PI. 8, 76, fig. 1), Io 5220 (d LV: PI. 8, 76, fig. 2), Io 5221 (d
LV: PI. 8, 78, fig. 1), Io 5222 (9 RV: PI. 8, 78, fig. 2). The specimen figured in PI. 8, 78, fig. 3 has
unfortunately been lost subsequent to photography. All the figured specimens are from the type locality,
5m from the base of the section.

Explanation of Plate 8, 76

Fig. 1 , 9 RV, ext. lat. (Io 5219, 653 pm long); fig. 2, d LV, ext. lat. ( holotype, Io 5220, 650 pm long).
Scale A (250 pm; x 1 30), fig. 1 ; scale B (250 pm; x 1 26), fig. 2.

-f-f— t—

-t— L4~

Stereo-Atlas of Ostracod Shells 8,77

Cistacythereis equivalvis (3 of 4)

Diagnosis: Shell surface reticulate with polygonal fossae; ribs of variable strength, often no more pronounced than
murae.

Remarks: The surface ribs in this species are either straight or irregular. The intramural pores are raised on pyramids
which are variously developed. Marginal spines are present — 6 to 18 anteriorly and 4 to 6 posteriorly. The
muscle scars comprise a subvertical row of 4 adductors and a V-shaped or divided frontal scar (see text-
fig. 1).

Distribution: Found only from the Tortonian in the Adana region of Turkey.

Text-fig. 1, diagrammatic representation of muscle
scars of C. equivalvis sp. nov. (x 300).

c P

Qi

Explanation of Plate 8, 78

Fig. 1, d LV, int. lat. (Io 5221, 641 pm long); fig. 2, 9 RV, int. lat. (Io 5222, 641 pm long); fig. 3, muse. sc. (specimen lost).
Scale A (250 pm; x 106), figs. 1 , 2; scale B (100 pm; x 371), fig. 3.

Stereo- Atlas of Ostracod Shells 8, 78

Cistacythereis equivalvis (4 of 4)

Stereo-Atlas of Ostracod Shells 8, 76

Cistacythereis equivalvis (2 of 4)

Stereo -Atlas of Ostracod Shells: Vol.8, Parti

CONTENTS

8 (1) 1 - 6 On Hemicytherura cellulosa (Norman) Emend; by J. E. Whittaker (£2.10)

8 (2) 7 - 1 2 On Hemicytherura aegyptica Hartmann; by A. R. Gurney (£2.10)

8 (3) 1 3 - 1 8 On Hemicytherura hoskini Horne sp. nov.; by D. J. Horne (£2.10)

8 (4) 19 - 26 On Hemicytherura videns (Muller); by J. Athersuch (£2.80)

8 (5) 27 - 32 On Hemicythere villosa (Sars); by J. Athersuch & J. E. Whittaker (£2.10)

8 (6) 33 - 36 On Cytheropteron elofsoni Lord sp. nov.; by A. R. Lord (£1 .40)

8 (7) 37 - 40 On Cytheropteron brastadensis Lord sp. nov.; by A. R. Lord (£1 .40)

8 (8) 41 - 44 On Kinkelinella malzi (Depeche); by L. M. Sheppard (£1 .40)

8 (9) 45 - 50 On Par alimnocy there vulgaris McKenzie & Swanson sp. nov. by K. McKenzie & K. Swanson (£2.10)

8 (10) 5 1 - 54 On Lomatobolbina vonhachtorum Schallreuter sp. nov.; by R. E. L. Schallreuter (£1 .40)

8 (1 1) 55 - 62 On Poly cope frigida Neale sp. nov.; by J. W. Neale (£2.80)

8(12)63-70 On Carinocythereis antiquata (Baird); by N. Doruk (£2.80)

8 (1 3) 7 1 - 74 On Cistacythereis pokomyi (Ruggieri); by N. Doruk (£1 .40)

8 (14) 75 - 78 On Cistacythereis equivalvis Doruk sp. nov.; by N. Doruk (£1 .40)

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