A Stereo-Atlas of Ostracod Shells

edited by R. H. Bate, J. W. Neale, David J. Siveter and

P. C. Sylvester-Bradley

Volume 3, Part 1; 27 August 1976

Printed and published by The Broadwater Press Ltd,

Welwyn Garden City, Hertfordshire, England

Editors

Dr R. H. Bate, Department of Palaeontology, British Museum (Natural History), Cromwell

Road, London SW7 5BD.

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

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

Professor P. C. Sylvester-Bradley, 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 Llniversity, Sendai, Japan.

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, Istituto e Museo di Geologia dell’Universita di Palermo, Corso Tukory, 131,

90134 Palermo, Italy.

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.

Acknowledgements

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

Research International Ltd. and from the Shell International Petroleum Co. Ltd.

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., 158 South Station, Yonkers, New York 10705, U.S.A.

Stereo-Atlas of Ostracod Shells 3 (1)1-8 (1976) Renibeyrichia mulciber (1 of 8)

595.336.11 (113.42) (944:163.148.35): 551.35+ 552.54

ON RENIBEYRICHIA MULCIBER SIVETER gen. et sp. nov.

by David J. Siveter

( University of Leicester, England)

Genus RENIBEYRICHIA gen. nov.

Type-species: Renibeyrichia mulciber sp. nov.

Derivation of name: Latin renis, a kidney, and the generic name Beyrichia ; with reference to the shape of the crumina.

Gender, feminine.

Diagnosis: Coarsely tuberculate beyrichiine with a long crumina, indistinctly set off from the lobes, in-

corporating all of the anterior lobe up to the cuspidal region, the area of lobal connection and the

ventral region of the syllobium. Syllobial groove sharply defined, joined directly to the prenodal

sulcus below a prominent, undisturbed zygal arch in both dimorphs. Velar ridge well developed,

smooth, entire in tecnomorphs; it can be traced, parallel to the marginal structure, along the base

the crumina.

Explanation of Plate 3, 2

Fig. 1, tecnomorph RV, ext. vent. (OS 6847, 1600 [xm long). Figs. 2-5, $ RV (holotype, OS 6848, 1800 (xm long): fig. 2, ext. vent.;

fig 3, ext. ant. ; fig. 4, ext. lat. ; fig. 5, ext. post.

Scale A (500 gm; x 37), fig. 1 ; scale B (500 [xm; x 33), figs. 2-5.

Stereo-Atlas of Ostracod Shells 3, 3 Renibeyrichia mulciber (3 of 8)

Remarks: A combination of the nature of the lobation, ornament and subcruminal morphology allies this

species to the subfamily Beyrichiinae Matthew, 1 886. As such, however, the overall shape and extent

of the crumina is unique. The smooth, almost flange-like velum is also unusual. The incursion of

the posterior part of the crumina into syllobial space imitates conditions more normally associated

with treposellids.

Renibeyrichia is comparable with Beyrichia ( Asperibeyrichia ) Martinsson, 1962, Beyrichia ( Scabri -

beyrichia ) Martinsson, 1962, and Eobeyrichia Henningsmoen, 1954 in having a zygal arch in both

females and tecnomorphs. As in the beyrichiines Calcaribeyrichia Martinsson, 1962, Plicibeyrichia

Martinsson, 1962, Gannibeyrichia Martinsson, 1962 and Navibeyrichia Martonsson, 1962, Renibey-

richia retains a ridge, rather than the more commonly found finger-print striation (cf. Beyrichia

M’Coy, 1846), on the ventral part of the crumina. The assimilation within the carapace wall of

much of the crumina and the lack of markedly abrupt differentiation between crumina and lobes is

a relatively advanced trend known from other beyrichiines (cf. subgenus Asperibeyrichia ), though

the occurrence of an undisturbed zygal arch and fully developed beyrichiacean lobation shows that

the Devonian Renibeyrichia is not far removed from primitive Silurian members of the subfamily.

Explanation of Plate 3, 4

Fig. 1, tecnomorph RV, ext. ant. (OS 6847); fig. 2, tecnomorph RV, ext. lat. (OS 6847); fig. 3, tecnomorph RV, ext. post. (OS 6847);

fig. 4, $ RV, ext. dors, (holotype, OS 6848); fig. 5, tecnomorph RV, ext. dors. (OS 6847).

Scale A (500 [xm ; x 37), figs. 1-3, 5 ; scale B (500 [xm ; x 33), fig. 4.

Stereo-Atlas of Ostracod Shells 3, 2 Renibeyrichia mulciber (2 of 8)

Stereo-Atlas of Ostracod Shells 3, 5 Renibeyrichia mulciber (5 of 8)

Renibeyrichia mulciber sp. nov.

Holotype: Brit. Mus. (Nat. Hist.) OS 6848, $ RV.

Type locality: Left bank of R. Murrumbidgee, at ‘Shearsby’s Wallpaper’, 1100 yd upstream from Old Taemas

Bridge, SW of Yass, New South Wales, Australia; approx, lat. 35°0'S, long. 148°50'E; Spirifer

yassensis Limestone, Murrumbidgee Series, Lower Devonian. Locality 1955/2 of White & Toombs

1972 (Bull. Br. Mus. nat. Hist. ( Geol .) 22, 411).

Derivation of name: Latin Mulciber , god of fire; from resemblance of ornament to volcanoes.

Figured specimens: Brit. Mus. (Nat. Hist.) nos. OS 6847 (tecnomorph RV : PI. 3, 2, fig. 1 ; PI. 3, 4, figs. 1-3, 5), OS 6848

(9 RV : PL 3, 2, figs. 2-5 ; PI. 3, 4, fig. 4; PI. 3, 8, figs. 2, 3), OS 6849 ($ LV: PI. 3, 8, fig. 1), OS 6850

(tecnomorph RV : PI. 3, 6, figs. 1-4), OS 6851 (tecnomorph LV : PI. 3, 8, fig. 4).

All valves silicified, ex-faunal phial IN 49627, obtained from Brit. Mus. (Nat. Hist.) P. murrum-

bidgeensis specimen P. 33583 (see ‘Remarks’), from type locality. Rock not in situ, collected from

scree.

Diagnosis: Anterior lobal cusp and single syllobial cusp stoutly developed above the hinge line, mostly smooth.

A prominent calcarine spine. Apex of preadductorial node extended to reach the dorsal margin of

the valve.

Explanation of Plate 3, 6

Figs. 1-4, tecnomorph RV (OS 6850): fig. 1, ext. lat.; fig. 2, syllobial ornament; figs. 3, 4, ornament of anterior lobe.

Scale A (500 gm ; x 37), fig. 1 ; scale B (1 50 gm ; x 1 10), fig. 2 ; scale C (75 gm ; x 275), fig. 3 ; scale D (25 gm ; x 550), fig. 4.

Stereo-Atlas of Ostracod Shells 3, 7 Renibeyrichia mulciber (7 of 8)

Remarks: R. mulciber is described from residues of a collection of Australian buchanosteid arthrodires made by

Toombs and others during 1955 and 1963. Some of the arthrodire finds were documented (White &

Toombs, op. cit.) as Parabuchanosteus murrumbidgeensis (White). Material [Brit. Mus. (Nat. Hist.)]

consists of 25 valves, mostly fragmentary: figured specimens; faunal phials IN 49627, IN 49628;

valves in faunal slide collection. There are six females, but no adult tecnomorphs.

A calcarine spine, always developed in tecnomorphs, may be present in females or, more usually,

its position recognized by the occurrence of a conspicuous posterodorsal cruminal tubercle. Each

tubercle has a single pore. The morphology of the syllobial groove and adjacent zygal arch is similar

to that of Beyrichia ( Scabribeyrichia ) churkini Berdan & Copeland, 1973 (Prof. Pap. U.S. geol. Surv.

825) from assumed late Lower Devonian (Emsian) of Alaska and Yukon Territory.

Distribution : Known only from the marine S. yassensis Limestone, Murrumbidgee Series, New South Wales;

White & Toombs localities 1955/2 (type locality) and 1963/16 (left bank of Murrumbidgee, shore E

of mouth of Oakey Creek, 1250 yd upstream of Old Taemas Bridge; fish specimen P. 50389). The

Murrumbidgee Series (Browne, 1959, J. Proc. R. Soc. N.S.W. 92 for 1958) is correlated with

supposed upper Lower Devonian (late Siegenian-Emsian) strata in the Wee Jasper area to the W

(Pedder, Jackson & Philip, 1970, J. Paleo. 44).

Explanation of Plate 3, 8

Fig. 1, 9 LV, ext. lat. (OS 6849); fig. 2, 9 RV, vent, obi., ventrolateral cruminal ornament (holotype, OS 6848); fig. 3, 9 RV, dors.,

ornament near syllobial cusp (holotype, OS 6848); fig. 4, tecnomorph LV, ext. lat. (OS 6851).

Scale A (500 gm ; x 31 ), fig. 1 ; scale B (200 gm ; x 75), fig. 2 ; scale C (100 gm ; x 150), fig. 3 ; scale D (500 gm ; x 34), fig. 4.

Stereo-Atlas of Ostracod Shells 3, 6

Renibeyrichia mulctber (6 of 8)

Stereo- Atlas of Ostracod Shells 3 (2) 9-12 (1976) Philomedes donzei (1 of 4)

595.339.14 (116.312) (44:161.006.44+ 44:161.004.44): 551.35

ON PHILOMEDES DONZEI NEALE sp. now

by John W. Neale

( University of Hull , England)

Philomedes donzei sp. nov.

1965 Cypridina? sp. nov. A ; P. Donze, Trav. Lab. Geol. Univ. Lyon 12, 100-101, pi. 3, figs. 71-74.

Holotype: University of Hull coll. no. HU.152.C.1, $ car.

[Paratypes: University of Hull coll. no. HU.152.C.2, 9 LV. University of Lyon coll. nos. 157130,

$ car. ; 157131, $ car. ; 157132, $ LV and associated RV],

Type locality : Chabrieres, Alpes-Haute-Provence, France; approx, lat. 44°02'N, long. 6°16'E. From the basal

Valanginian of the Vocontian Trough.

Derivation of name: In honour of Dr P. Donze of the University of Lyon.

Figured specimens: LTniversity of Hull coll. no. HU.152.C.1 (2 car. : PI. 3, 10, figs. 2, 3). University of Lyon coll. nos.

157130 ($ car. : PI. 3, 12, fig. 1), 157131 (9 car. : PI. 3, 12, fig. 2), 157132 (2 LV, RV with muse. sc.

pattern : Text-fig. 1); unnumbered specimen (rf car. : PI. 3, 10, fig. 1).

Explanation of Plate 3, 10

Fig. car., ext. It. lat. (unnumbered specimen, 1065 pm long). Figs. 2, 3, 9 car. (holotype, HU.152.C.1, 1117 pm long): fig. 2, ext.

It. lat.; fig. 3, ext. rt. lat.

Scale A (200 pm; x 60), fig. 1 ; scale B (200 pm; x 59), figs. 2, 3.

Stereo-Atlas of Ostracod Shells 3, 1 1 Philomedes donzei (3 of 4)

Figured specimens : Unnumbered specimen from locality c. 50 m from entrance

( contd .) to grounds of Chateau de Malbos, Berrias-la Rouviere road,

France; approx, lat. 44°23'N, long. 4°12'E; basal Valan-

ginian. All other specimens are from the type locality.

Diagnosis: Smooth, thick-shelled. In lateral view female almost equi-

dimensional, male more elongate.

Remarks: Myodocopida are rare in the geological record. This species

has a similar muscle scar pattern and the strong sexual dimor-

phism of Philomedes but is heavily calcified suggesting that its

swimming ability was more limited than present species of

the genus. Specimens of “ Cypridina ? sp. nov. A” figured by

Donze (1965) from a similar horizon at Berrias, Ardeche are

the males of this species (see PI. 3, 10, fig. 1).

Distribution: Dr Donze informs me that this species occurs widely in the

Vocontian Trough where it is an important marker, being

confined to the basal Valanginian Beds and not so far found

above the base of the Kilianella roubaudi Zone.

Text-fig. 1. 2 LV, ext. muse. sc.

(157132).

Explanation of Plate 3, 12

Fig. 1, 2 car., ext. dors. (157130, 1039 pm long) ; fig. 2, 2 car., ext. vent. (157131, 1156 pm long).

Scale A (200 pm; x 81), figs. 1, 2.

Stereo-Atlas of Ostracod Shells 3, 10

Philomedes donzei (2 of 4)

Stereo-Atlas of Ostracod Shells 3, 12

Philomedes donzei (4 of 4)

Stereo-Atlas of Ostracod Shells 3 (3) 13-20 (1976)

59.5.337.12 (119.9) (548.7: 161 .079.07) : 551. 312

Centrocypris viridis (1 of 8)

ON CENTROCYPRIS VIRIDIS NEALE sp. nov.

by John W. Neale

( University of Hull, England)

Centrocypris viridis sp. nov.

Holotype: University of Hull coll. no. HU.250.R.1, $ RV, LV, limbs and soft parts.

[Paratypes: University of Hull coll. nos. HU.250.R.2 9 (all $)].

Type locality: A tank at Ma-Eliya, near Battuluoya, Sri Lanka; approx, lat. 7°48'N, long. 79°55'E. Recent.

Derivation of name : From the Latin viridis, green; referring to the beautiful deep green colour observed in fresh

material.

Figured specimens: LTniversity of Hull coll. nos. HU.250.R.4a ($ LV, RV : PI. 3, 14, figs. 1, 2; PI. 3, 18, fig. 2), HU.

250.R.la,b ($ LV, RV, limbs & soft parts: PI. 3, 16, figs. 1, 2; PI. 3, 18, figs. 1,3; Text-figs. 1, 2),

HU.250.R.2a ($ LV, RV : PI. 3, 20, figs. 1-3). All specimens are from the type locality.

Diagnosis: Shell covered with small spines, not strongly vaulted posterodorsally in lateral view, furcal rami

slender.

Explanation of Plate 3, 14

Figs. 1,2,$ (HU. 250. R. 4a, 920 pm long) : fig. 1 , RV, ext. lat. ; fig. 2, LV, ext. lat.

Scale A (200 pm; X 90), figs. 1, 2.

Stereo-Atlas of Ostracod Shells 3, 15

Centrocypris viridis (3 of 8)

Remarks: The three species of Centrocypris so far described have all come from Africa or from islands asso-

ciated with the African mainland, although Hartmann (1964, Int. Revue ges. Hydrobiol.) has

recorded Centrocypris horrida Vavra, 1895 from a single locality in India. Centrocypris viridis differs

from Centrocypris jakulskii Grochmalicki, 1914 (the closest of the three species of Centrocypris) in

the lesser vaulting of the shell posterodorsally in lateral view and the somewhat more slender furcal

rami. In the E African C. jakulskii the furcal claws are the same length but in C. viridis the sub-

terminal claw is typically shorter than the terminal claw although there is some variation in this and

about 20% of the specimens examined have the furcal claws of equal length. From C. horrida

(Zanzibar, E Africa* Aldabra Island and India) the Sri Lanka species differs in lacking the strong

marginal spination. From Centrocypris margaritifera Muller, 1898 (Madagascar), C. viridis differs in

the absence of ribbing on the ventral surface, the absence of a posteroventral spine and in the very

much shorter dorsal seta on the furca which in Muller’s species appears to be equal in length to the

sub-terminal claw.

Distribution : C. viridis appears to be well established in Sri Lanka, the type locality yielding 146 specimens and

paddy fields at Karainagar East, Jaffna (lat. 9 44'N, long. 79°53'E) providing another 38. In the

Ma-Eliya sample the species was associated with Cypris subglobosa Sowerby, Stenocypris major

(Baird), Cypretta globosa (Brady), Hemicypris pyxidata (Moniez) and a new species of Strandesia.

At Karainagar East the sample contained only C. viridis, but another sample from the same locality

contained C. subglobosa Sowerby and the same new species of Strandesia.

Explanation of Plate 3, 16

Figs. 1,2,$ (holotype, HU. 250. R. la, 950 pm long): fig. 1, RV, int. lat.; fig. 2, LV, int. lat.

Scale A (200 pm; x 84), figs. 1, 2.

Stereo- Atlas of Ostracod Shells 3, 14

Centrocypris viridis (2 of 8)

Stereo- Atlas of Ostracod Shells 3, 16

Centrocypris viridis (4 of 8)

Stereo- Atlas of Ostracod Shells 3, 17

Centrocypris viridis (5 of 8)

Maxi lla

Text-fig. 1. $ holotype, HU.250.R.lb.

Antennule

Explanation of Plate 3, 18

Fig. 1, $ RV, int. ant. obi. (holotype, HU. 250. R. la) ; fig. 2, § car. ,ext. dors. (HU. 250. R. 4a) ; fig. 3, $ LV, int. ant. obi. (holotype,

HU.250.R.la).

Scale A (200 (im; x 63), figs. 1,3; scale B (200 pm; x 72), fig. 2.

Stereo- Atlas of Ostracod Shells 3, 19

Centrocypris viridis (7 of 8)

Explanation of Plate 3, 20

Figs. 1-3, $ (HU. 250. R. 2a, 1000 pm long) : fig. 1, LV, ant. margin; fig. 2, RV, int. muse. sc. ; fig. 3, RV, post, margin.

Scale A (100 pm ; x 1 25), fig. 1 ; scale B (40 pm ; x 450), fig. 2 ; scale C (100 pm ; x 180), fig. 3.

Stereo-Atlas of Ostracod Shells 3, 18

Centrocypris viridis (6 of 8)

Stereo-Atlas of Ostracod Shells 3, 20

Centrocypris viridis (8 of 8)

Stereo-Atlas of Ostracod Shells 3 (4) 21-28 (1976) Oncocypris pustulosa (1 of 8)

595.337.12 (119.9) (548.7:161.080.08): 551.312

ON ONCOCYPRIS PUSTULOSA GURNEY

by John W. Neale

( University of Hull, England)

Oncocypris pustulosa Gurney, 1916

1916 Oncocypris pustulosa sp. nov. R. Gurney, Proc. zool. Soc. Lond. 1916, 340, pi. 3, figs. 17-21.

1963 Oncocypris pustulosa Gurney, 1916; E. Triebel, Senckenberg biol. 44, 35.

1975 Oncocypris pustulosa Gurney, 1916; R. G. Michael & R. Victor,^, nat. Hist. 9, 509, text-figs. 1 A-F.

Type specimens: The repository is unknown.

Type locality: A tank by Lady Horton’s Drive at Kandy, Sri Lanka (Ceylon); approx, lat. 7C17'N, long. 80°40'E.

Recent.

Figured specimens: University of Hull coll. nos. HU.244.R.2a (§ LV, RV ; PI. 3, 22, fig. 1 ; PI. 3, 26, fig. 3), HU.244.R.la

(<J LV, RV: PI. 3, 22, figs. 2, 3 ; PL 3, 24, figs. 1, 2; PI. 3, 26, figs. 1, 2; PI. 3, 28, figs. 2, 3), HU.244.R.lb

limbs & soft parts : PI. 3, 28, fig. 1 ; Text-figs. 1 , 2).

Explanation of Plate 3, 22

Fig. 1, $ RV, ext. lat. (HU. 244. R. 2a, 545 jam long); fig. 2,f RV, ext. ant. obi. (HU. 244. R. la, 493 [am long); fig. 3, f RV, ext. lat.

(HU.244.R.la).

Scale A (100 (am; x 132), fig. 1 ; scale B (100 [am; x 144), figs. 2, 3.

Stereo-Atlas of Ostracod Shells 3, 23 Oncocypris pustulosa (3 of 8)

Figured specimens : All specimens are from Rambewewa near Nochchiyagama, Sri Lanka; approx, lat. 8°17'N, long.

(contd.) 80°12'E.

Diagnosis: Strongly vaulted carapace, egg-shaped in dorsal view, covered with pustules and with well developed

eye tubercles and post-ocular sulcus. Left and right clasping limbs (limb 5) of male dissimilar. The

flagelliform furca is characteristic of the genus.

Remarks: Gurney (1916) noted that there was a single small seta on the maxilla ( recte second maxilla on his

terminology) and that G. W. Muller (1898, Abh. senckenb. naturforsch. Ges. 21, 286) gives the absence

of a respiratory plate on this limb as a feature of the genus. Michael & Victor (1975) note that in

their material from a coastal freshwater pond in Kerala State, S India, there is an unmistakable

respiratory plate on the second maxilla although they do not figure it. The Sri Lanka material con-

firms this and is figured here, the left and right parts of this limb in the male being dissimilar.

Michael & Victor (1975) note 17 rosettes in the Zenker’s organ. Present material shows that the

number varies between 16 and 18. Carapace shows sexual dimorphism, in the present material the

male being shorter and higher than the female.

Distribution :

This species has only been found in Sri Lanka and S India (Kerala).

Explanation of Plate 3, 24

Fig. 1 , f LV, int. lat. (HU.244.R.la) ; fig. 2,f RV, int. lat. (HU.244.R.la).

Scale A (100 [am; x 156), figs. 1, 2.

"i~i- -

i Stereo-Atlas of Ostracod Shells 3, 22

Stereo-Atlas of Ostracod Shells 3, 24

Oncocypris pustulosa (4 of 8)

Oncocypris pustulosa (2 of 8)

Stereo-Atlas of Ostracod Shells 3, 25 Oncocypris pustulosa (5 of 8)

Fig. 1,^ LV, ext. lat. (HU.244.R.la) ; fig. 2>CJ LV, ext. ant. obi. (HU.244.R.la); fig. 3, $ LV, ext. lat. (HU.244.R.2a).

Scale A ( 1 00 (Jim ; x 142), fig. 1 ; scale B (100 (xm ; x 151), fig. 2; scale C (100 fxm; x 128), fig. 3.

Stereo-Atlas of Ostracod Shells 3, 27 Oncocypris pustulosa (7 of 8)

Text-fig. 2. specimen, HU.244.R.lb (all rt. limbs except where stated).

Explanation of Plate 3, 28

Fig. 1,^, Zenker’s organ (HU.244.R.lb); fig. 2,<J RV, int. ant. obi. (HU.244.R.la) ; fig. 3,^ LV, int. ant. obi. (HU.244.R.la).

Scale A (100 fxm; x 278), fig. 1 ; scale B (100 |xm; x 128), figs. 2, 3.

Stereo-Atlas of Ostracod Shells 3, 26 Oncocypris pustulosa (6 of 8)

-

'

Stereo-Atlas of Ostracod Shells 3 (5) 29-36 (1976)

595.337.12 (119.9) (548.7: 161.081.06): 551.312

Stenocypris fernandoi (1 of 8)

ON STENOCYPRIS FERNANDOI NEALE sp. nov.

by John W. Neale

( University of Hull, England)

Stenocypris fernandoi sp. nov.

Holotype: University of Hull coll. no. HU.239.R.5, $ RV, LV, limbs and soft parts.

[Paratypes: University of Hull coll. nos. HU.239.R.1-4, 6-8 (five eft?, two $$)].

Type locality: Pond, Yala-Palatupana, Sri Lanka; approx, lat. 6°19N', long. 81°27'E. Recent.

Derivation of name: In honour of Professor C. H. Fernando of the University of Waterloo, Ontario, Canada.

Figured specimens: University of Hull coll. nos. HU.239.R.7a ($: PI. 3, 30, figs. 1, 2), HU.239.R.5a ($: PI. 3, 32, figs.

1, 2; PI. 3, 34, figs. 1, 2; PL 3, 36, figs. 3, 4), HU.239.R.lb (<?: PI. 3, 36, fig. 1), HU.239.R.8b (<?:

PI. 3, 36, fig. 2). All specimens are from the type locality.

Explanation of Plate 3, 30

Figs. 1,2,$ RV (HU.239.R.7a, 4620 [Am long) : fig. 1 , ext. lat. ; fig. 2, ext. lat. post, termination.

Scale A (1 mm ; x 22), fig. 1 ; scale B (40 [Am ; x 250), fig. 2.

Stereo-Atlas of Ostracod Shells 3, 31

Stenocypris fernandoi (3 of 8)

Diagnosis: A large stenocyprid (length: <?<? 3-98-4-54 mm, $$ 4-62-5-05 mm) with sharply pointed posterior

termination. Marked sexual dimorphism in second and fifth limbs. Furcal rami assymetric, the

right ramus strongly spinose, the spines not grouped or bunched. Zenker’s organ with 40-45

rosettes.

Remarks: Very few species approach S. fernandoi in size. Stenocypris elongata Daday, 1910 (5 mm, E Africa)

differs in being lower in proportion to the length, in shape and in the four groups of hairs on the right

furca. Stenocypris cultrata Muller, 1900 (3 -9-4- 7 mm, Africa) differs in shape, the anterior end being

lower in lateral view, the posterodorsal margin steeper and with strong marginal hairs on each side

of the posterior termination ; the hairs on the right furcal ramus are markedly grouped. Stenocypris

biwasi Deb, 1972 (4-3 mm, India) is much more elongate and has much better developed marginal

hairs. Stenocypris krishnakantai Deb, 1972 (5 -37 mm, India) lacks the marginal band of pore canals

and is not a Stenocypris but probably a Chrissia Hartmann, 1957. Stenocypris aldabrae Muller,

1898 (2-9-3- 5 mm, Aldabra, Indian Ocean) is generally closest but differs in the less acute posterior

termination in lateral view and the much wider right furcal ramus, as well as in overall size.

Distribution : So far this species has only been found at the one locality where over 100 specimens were available

for study.

Explanation of Plate 3, 32

Figs. 1, 2, $ RV (holotype, HU.239.R.5a, 4920 [Am long) : fig. 1 , int. muse. sc. ; fig 2, int. lat.

Scale A (40 [Am; x 330), fig. 1 ; scale B (1 mm; x 20), fig. 2.

Stereo-Atlas of Ostracod Shells 3, 30

Stenocypris fernandoi (2 of 8)

Stereo- Atlas of Ostracod Shells 3, 32

Stenocypris fernandoi (4 of 8)

F

Stereo- Atlas of Ostracod Shells 3, 33 Stenocypris fernandoi (5 of 8)

Figs. 1, 2, §LV (holotype, HU.239.R.5a) : fig. 1, ext. lat. post, termination; fig. 2, ext. lat.

Scale A (200 jxm ; x 90), fig. 1 ; scale B (1 mm ; x 20), fig. 2.

*

F

Stereo-Atlas of Ostracod Shells 3, 35

Stenocypris fernandoi (7 of 8)

F

fig. 4, 9 LV, ext. ant. obi. (holotype, HU. 239. R. 5a).

Scale A (200 [am ; x 113), fig. 1 ; scale B (200 (xm; x 1 20), fig. 2 ; scale C (400 [im ; x 33), fig. 3 ; Scale D (500 (xm ; x 18), fig. 4.

r

F

l

F

F

F

l

-h

Stereo-Atlas of Ostracod Shells 3, 34

Stereo-Atlas of Ostracod Shells 3, 36

Stenocypris fernandoi (8 of 8)

Stenocypris fernandoi (6 of 8)

Stereo-Atlas of Ostracod Shells 3 (6) 37-40 (1976)

595.337.12 (119.9) (548.7: 161.079.07): 551.312

Ilyocypris taprobanensis (1 of 4)

ON ILYOCYPRIS TAPROBANENSIS NEALE sp. nov.

by John W. Neale

( University of Hull , England)

Ilyocypris taprobanensis sp. nov.

Holotype: University of Hull coll. no. HU.242.R.1, $ LV, RV, limbs and soft parts.

Type locality: Estate pond in coconut plantation, Battuluoya, Sri Lanka; approx, lat. 7°42'N, long. 79°48'E.

Derivation of name: From the Latin taprobane, Ceylon.

Figured specimens : University of Hull coll. nos. HU.242.R.1 ($ LV, RV: PI 3, 38, figs. 1, 2; PI. 3, 38, figs. 1-3),

HU.242.R.2 (d1 LV, RV, limbs & soft parts: Text-fig. 1). All material from the type locality.

Diagnosis: Valves with variable spination, even between left and right valves of same individual. Small peri-

pheral spines, about 12 anteriorly, ten posteriorly, with larger tubercles or blunt spines inside them

anteriorly and posteriorly. Of the latter the posteroventral, anteroventral and anteromedian are the

most consistent. Furca with very slender claws.

Explanation of Plate 3, 38

Figs. 1,2,$ (holotype, HU.242.R.1, 727 fxm long) : fig. 1 , RV, ext. lat. ; fig. 2, LV, ext. lat.

Scale A (100 [xm; x 135), figs. 1, 2.

Stereo-Atlas of Ostracod Shells 3, 39

Ilyocypris taprobanensis (3 of 4)

Remarks: I. taprobanensis is unlikely to be confused with

other Ilyocypris species on the basis of shell form.

It is not close to species of the genus whose limbs

and soft parts are known although the furcal

claws resemble those of Ilyocypris divisa Klie in

their slenderness. From that species it is easily

differentiated by the form of the male clasping

limbs (fifth pair of limbs) and the broader, proxi-

mal expansion of the furcal ramus.

Distribution: So far this species is only known from the Battu-

luoya area of western Sri Lanka.

Text-fig. 1. d1 fifth limbs (HU.242.R.2).

Explanation of Plate 3, 40

Figs. 1-3, $ (holotype, HU.242.R.1): fig. 1, LV, ext. lat., muse, sc.; fig. 2, RV, ant. obi.; fig. 3, LV, ant. obi.

Scale A (20 [xm ; x 750), fig. 1 ; scale B (100 [xm ; x 1 29), fig. 2 ; scale C (100 [xm ; x 137), fig. 3.

-M

Stereo-Atlas of Ostracod Shells 3, 40

Ilyocypris taprobanensis (4 of 4)

Stereo-Atlas of Ostracod Shells 3, 38

Ilyocypris taprobanensis (2 of 4)

Stereo-Atlas of Ostracod Shells 3 (7) 41-44 (1976) Radimella dictyon (1 of 4)

595.337.14 (119.9) (265.1 : 164.090.02): 551.351 (24.08.80)

ON RADIMELLA DICTYON POKORNY

by Richard H. Benson

(. Smithsonian Institution, Washington, D.C., U.S.A.)

Genus RADIMELLA Pokorny, 1968

Type-species (by original designation): Radimella dictyon Pokorny, 1968.

Diagnosis: A robustly ornate hemicytherine with distinctive reticular pattern; three frontal, divided adductor

scars; amphidont hinge with ventrally incised posterior tooth and auxiliary denticles. Three parallel

ridges of reticulum extending from muscle node forward; diagonal ridges forming posterodorsal

loop with median ridges that become less well organized toward posterior (see Text-fig. 3).

Radimella dictyon Pokorny, 1968

1968 Radimella dictyon sp. nov. V. Pokorny, Acta Univ. Carolinae geol. 1968, 365-368, text-figs. 1-6.

1969 Radimella dictyon Pokorny; V. Pokorny, Acta Univ. Carolinae geol. 1969, 296, pi. 1, fig. 1, pi. 4, fig. 2.

Holotype : U.S.N.M. coll. no. 122091, RV.

Explanation of Plate 3, 42

Figs. 1, 2, LV (122112, 700 pm long): fig. 1, ext. lat. ; fig. 2, int. lat.

Scale A (250 pm; x 130), figs. 1, 2.

Stereo-Atlas of Ostracod Shells 3, 43 Radimella dictyon (3 of 4)

Type locality : Galapagos Islands; N of Isla Espanola (Hood Island); Albatross station no. 2813, lat. 01C1'S,

long. 89°40'W, depth 40 fathoms, surface temperature 81°F.

Figured specimens: U.S.N.M. coll. no. 122112 (LV : PI. 3, 42, figs 1, 2; PI. 3, 44, figs. 2, 3) and 122091 (RV : PI. 3, 44,

fig. 1). Both Recent from type locality.

Diagnosis: A species of Radimella with a uniformly developed reticulum and with secondary muri in the

Text-figs. 1-3, R. dictyon. 1, post, element RV hinge, x 200; 2, adductor muse. sc. pattern, x 200; 3, LV reticular diagram (modified

after Pokorny 1968) with homologous series of pore conuli (a-h), x 120.

Explanation of Plate 3, 44

Fig. 1 , RV, ext. lat. (holotype, 122091, 730 pm long) ; fig. 2, LV ant. hinge, int. lat. (122112) ; fig. 3, LVpost. hinge, int. lat. (122112).

Scale A (250 |xm ; x 1 20), fig. 1 ; scale B (100 pm ; x 360), figs. 2, 3.

Stereo-Atlas of Ostracod Shells 3, 44

Radimella dictyon (4 of 4)

Stereo-Atlas of Ostracod Shells 3, 42

Radimella dictyon (2 of 4)

Stereo-Atlas of Ostracod Shells 3 (8) 45-48 (1976) Radimella dancini (1 of 4)

595.337.14 (119.9) (265.1 : 164.090.02): 551.351 (24.08.80)

ON RADIMELLA DARWIN1 POKORNY

by Richard H. Benson

(, Smithsonian Institution , Washington , D.C., U.S.A.)

Radimella darwini Pokorny, 1969

1969 Radimella darwini darwini subsp. nov. V. Pokorny, Acta Univ. Carolinae geol. 1969, 297-299, pi. 1, fig. 2, text-figs. 1 a-d, 3, 12.

1969 Radimella damcini dictyonoides subsp. nov. V. Pokorny, ibid. , 299-301 , pi. 2, fig. 2, text-figs. 5, 6, 10, 1 1 .

Holotype : U.S.N.M. coll. no. 122097.

Type locality: Galapagos Islands; N of Isla Espanola (Hood Island); lat. 0I°1'S, long. 89°40'W. Recent, Albatross

station no. 2813, depth 40 fathoms, surface temperature 81 °F.

Figured specimens : U.S.N.M. coll. nos. 122097 (LV: PI. .3, 46, figs. 1, 2), 122098 (LV, holotype of R. darwini dictyo-

noides : PI. 3, 48, figs. 1 , 2). 122097 from type locality. 122098 from Galapagos Islands, Anton Bruun

Cruise 18B, station 791G (lat. 00°27'S, long. 90°21'W ; Recent), depth 100 m.

Diagnosis: Strong difference between primary and secondary ridge systems of reticulum.

Explanation of Plate 3, 46

Figs. 1, 2, Radimella darwini dancini , LV (holotype, 122097, 750 pirn long): fig. 1, ext. lat.; fig. 2, int. lat.

Scale A (250 pun; x 120), figs. 1, 2.

Remarks: Pokorny (op. cit.) recognized two subspecies, R. darwini darwini (PI. 3, 46 and Text-fig. 1) and R.

darwini dictyonoides (PI. 3, 48 and Text-fig. 2) differing in strength of the secondary ridge systems,

with the latter subspecies approaching R. dictyon Pokorny (see Stereo- Atlas of Ostracod Shells

3, 41-44).

Text-figs. 1, 2. Reticular diagrams of R. darwini darwini (fig. 1) and R. dancini dictyonoides (fig. 2) after Pokorny (op. cit.), x 80;

a-h, homologous series of pore conuli.

Explanation of Plate 3, 48

Figs. 1, 2, Radimella dancini dictyonoides, LV (holotype, 122098, 770 pun long): fig. 1, ext. lat.; fig. 2, int. lat.

Scale A (250 pun ; x 117), figs. 1 , 2.

mz

■

Stereo-Atlas of Ostracod Shells 3 (9) 49-52 (1976) Radimella confragosa (1 of 4)

595.337.14 (118.21/118.22) (756:162.079.34): 551.35+ 552.542

ON RADIMELLA CON ERA GO S A (EDWARDS)

by Richard H. Benson

( Smithsonian Institution, Washington, D.C., U.S.A.)

Radimella confragosa (Edwards, 1944)

1944 Hemicy there confragosa sp. nov. R. A. Edwards, J. Paleont. 18, 518, pi. 86, figs. 23-26.

1971 Radimella confragosa (Edwards); J. E. Hazel, Prof. Pap. U.S. geol. Surv. 704, 6.

Holotype: U.S.N.M. coll. no. 559423, $ car.

Type locality: Miocene Duplin, pit on N side of Lumber River and W side of U.S. highway no. 74, SE of Lumber-

ton, North Carolina; lat. 34°37'N, long. 79°00'W.

Figured specimens : U.S.N.M. coll. nos. 559423 (9 car.: PI. 3, 50, figs. 1, 2; PI. 3, 52, figs. 3, 4), 172675 (9 LV : PI. 3,

52, figs. 1, 2). 172675 from Yorktown Formation, an open pit phosphate mine of the Texas Gulf

Sulphur Co., near Aurora, Beaufort County, North Carolina; Lower Pliocene; lat. 35°20'N, long.

76°45'W.

Explanation of Plate 3, 50

Figs. 1, 2, $ car. (holotype, 559423, 580 g.m long): fig. 1, LV, ext. lat.; fig. 2, RV, int. lat.

Scale A (200 gm; x 155), figs. 1, 2.

Stereo-Atlas of Ostracod Shells 3, 51 Radimella confragosa (3 of 4)

Diagnosis: A species of Radimella with massive muri and the posterodorsal loop coincident with the dorsal

margin.

Remarks: Similar to Radimella ponderosa Pokorny, 1967 (Recent; Galapagos Islands), whose posterodorsal

loop is detached from the dorsal margin.

Text-fig. 1. Reticular diagram; a-h, homologous series of pore conuli, x 150.

Explanation of Plate 3, 52

Figs. 1 , 2, $ LV (172675, 570 pm long) : fig. 1 , ext. lat. ; fig. 2, subcentral tubercle, ext. lat. Figs. 3, 4, 9 car. (holotype, 559423) : fig. 3,

RV int. lat., post, hinge element; fig. 4, RV int. lat., ant. hinge element.

Scale A (250 pm; x 135), fig. 1 ; scale B (100 pm; x 400), fig. 2; scale C (50 pm; x 500), figs. 3, 4.

Stereo-Atlas of Ostracod Shells 3, 52

Radimella confragosa (4 of 4)

)-+- +

Radimella confragosa (2 of 4) j j |

Stereo-Atlas of Ostracod Shells 3, 50

Stereo-Atlas of Ostracod Shells 3 (10) 53-56 (1976) Radimella? aurita (1 of 4)

595.337.14 (119.9) (265.22:162.117.38+ 265.22 : 1 62.1 1 8.32) : 551.351 (24.08.30)

ON RADIMELLA? AURITA (SKOGSBERG)

by Richard H. Benson

{Smithsonian Institution, Washington, D.C., U.S.A.)

Radimella? aurita (Skogsberg, 1928)

1928 Cythereis ( Cythereis ) aurita sp. nov. T. Skogsberg, Occ. Pap. Calif. Acad. Sci. 15, 120-126, pi. 6, figs. 5, 6, text-fig. 21.

1959 Bradleya aurita (Skogsberg); R. H. Benson, Paleont. Contr. Univ. Kans. Arthr. 1, 63, pi. 6, figs. 2a— c, pi. 11, fig. 4.

1972 Radimella? aurita (Skogsberg); R. H. Benson, Smithsonian Contrib. Paleobiol. 12, 33.

Syntypes: U.S.N.M. coll. no. 127411.

Type locality: Pacific Grove, California, just outside Hopkins Marine Station, in a tide pool; lat. 36C37'N, long.

121°54'W. Recent.

Figured specimens: U.S.N.M. coll. nos. 190450 ($ LV : PI 3, 54, figs. 1, 3), 190446 (9 RV : PI. 3, 54, fig. 2), 190106 ($

car. : PI. 3, 56, figs. 1-3). 190450 and 190446 both Recent from Todos Santos Bay, Baja California,

Mexico ; lat. 38°41 'N, long. 1 1 6°40'W, 1 5 fathoms. 190106 Recent from Bird Rock (beach wash), La

Jolla, California; lat. 32°51'N, long. 117°16'W.

Explanation of Plate 3, 54

Fig. 1, $ LV, ext. lat. (190450, 860 pm long); fig. 2, $ RV, int. lat. (190446, 840 pm long); fig. 3, 9 LV, ext. lat., subcentral tubercle

(190450).

Scale A (250 pm; x 92), figs. 1, 2; scale B (100 pm; x 275), fig. 3.

Stereo-Atlas of Ostracod Shells 3, 55 Radimella? aurita (3 of 4)

Text-fig. 1. Reticular diagram; a-h, homologous series of pore conuli.

Explanation of Plate 3, 56

Figs. 1-3, $ car. (190106, 780 pm long): fig. 1, ext. It. lat.; fig. 2, pore with sieve plate; fig. 3, disjunctive mural pore.

Scale A (250 pm; x 92), fig. 1 ; scale B (5 pm; x 5000), figs. 2, 3.

4-4 1—

4-

Radimella? aurita (2 of 4)

Stereo-Atlas of Ostracod Shells 3, 54

Stereo-Atlas of Ostracod Shells 3, 56

Radimella? aurita (4 of 4)

Stereo-Atlas of Ostracod Shells 3 (11) 57-60 (1976) Radimella? floridana (1 of 4)

595.337.14 (119.9) (261.48:162.077.33 + 261.48 : 162.079.32) : 551 .351

ON RADIMELLA? FLORIDANA (BENSON & COLEMAN)

by Richard H. Benson

[Smithsonian Institution, Washington, D.C., U.S.A.)

Radimella? floridana (Benson & Coleman, 1963)

1963 Aurila conradi floridana subsp. nov. R. H. Benson & G. L. Coleman, Paleont. Contr. Univ. Kans. Arthr. 2, 35, 36, pi. 8,

figs. 10-12, text-fig. 21.

? 1 965 Aurila conradi littorala subsp. nov. S. Grossman, Micropaleontology 11, 143—146, pi. 1, figs. 1-11.

1966 Aurila conradi floridana Benson & Coleman; R. H. Benson, X Paleont. 40, 746.

1971 Aurila floridana Benson & Coleman; P. C. Valentine, Prof. Pap. U.S. geol. Surv. 683-D, tab. 1, pi. 7, figs. 43^47.

Lectotype: U.S.N.M.' coll. no. 113202; designated Benson 1966, op. cit.

Type locality: Western end of Florida Bay in waters about 4 fathoms deep. Lat. 24C55'N, long. 80C55'W.

Figured specimens: U.S.N.M. coll. nos. 172654 (9 LV : PI. 3, 58, figs. 1-4), 190513 (9 RV: PI. 3, 60, figs. 1-3). 172654

Recent from Gosnold station 1845 (shelf off Onslow Bay, lat. 33°59-5'N, long. 76°29-3'W, depth

41 m); 190513 Recent from Gosnold station 1474 (shelf off South Carolina, lat. 32G49-3'N, long.

78°44-4'W, depth 32 m).

Explanation of Plate 3, 58

Figs. 1-4, 9 LV (172654; 700 pm long); fig. 1, ext. lat.; fig. 2, ext. lat., subcentral tubercle; fig. 3, disjunctive mural pore; fig. 4, pore

with sieve plate.

Scale A (250 pm ; x 115), fig. 1 ; scale B (100 pm ; x 350), fig. 2 ; scale C (5 pm ; x 5000), figs. 3, 4.

Stereo-Atlas of Ostracod Shells 3, 59

Radimella? floridana (3 of 4)

Diagnosis : Possibly a species of Radimella with the fossae divided by secondary reticulation and an inner

posterior rim developed just in from the margin extending from the ventrolateral ridge.

Remarks: Probably conspecific with Aurila conradi littorala Grossman, 1965, from the Recent of Radfish Bay,

Texas coast, though doubt about the reticular pattern of that form makes absolute assignment

uncertain.

i*

Text-fig. 1. LV reticular diagram, modified after Pokorny ( Acta Univ. Carolinae geol., 1968). Text-fig. 2. RV int. lat. muse. sc.

Explanation of Plate 3, 60

Figs. 1-3, 2 RV (190513, 690 pm long) : fig. 1, int. lat. ; fig. 2, ant. hinge element; fig. 3, post, hinge element.

Scale A (250 pm ; x 133), fig. 1 ; scale B (100 pm ; x 400), figs. 2, 3.

Stereo-Atlas of Ostracod Shells 3, 60 Radimella? floridana (4 of 4)

Stereo- Atlas of Ostracod Shells 3 (12) 61-64 (1976)

595.337.3 (118.213) (560:161.035.37): 551.351 + 552.513

552.542

Cytherella petrosa (1 of 4)

ON CYTHERELLA ( CYTHERELLOIDEA ) PETROSA DORUK sp. nov

by Neriman Doruk

( University of Leicester, England )

Cytherella [Cytherelloidea) petrosa sp. nov.

Holotype: Brit. Mus. (Nat. Hist.) IO 5771, $ LV.

Type locality: A road section 2 km S of Salba§, Adana area of Turkey; approx, lat. 37°07'N, long. 35°08'E. Tor-

tonian (Upper Miocene); yellow sandstone with abundant molluscs and foraminifera. Presumed

shallow marine.

Derivation of name: From the Greek ‘rocky’, with reference to the nature of the surface ornament.

Figured specimens: Brit. Mus. (Nat. Hist.) IO 5770 (9 RV : PI 3, 62, fig. 1), IO 5771 ( LV : PI. 3, 62, fig. 2; PI. 3, 64,

fig. 3), IO 5772 (9 RV : PI. 3, 64, figs. 2, 4). The specimen figured in PI. 3, 64, fig. 1, has been broken

since preparation and photography.

Explanation of Plate 3, 62

Fig. 1, 9 RV, ext. lat. (IO 5770, 650 [im long); fig. 2, $ LV, ext. lat. (holotype, IO 5771, 630 [xm long).

Scale A (250 (xm; x 131), fig. 1 ; scale B (250 |xm; x 137), fig. 2.

Stereo-Atlas of Ostracod Shells 3, 63

Cytherella petrosa (3 of 4)

Figured specimens : IO 5770 and IO 5771 from type locality, 7 m from the base and at the base of the section respectively.

( contd .) IO 5772 from a road section, 4 m from the base, 1 km N of Salba§, Turkey; approx, lat. 37°08'N,

long. 35°08'E; Tortonian, grey marl with molluscs and foraminifera; presumed shallow marine.

Diagnosis: Steep dorsally; surface nodose and reticulate.

Remarks: Surface variably reticulate and nodulose (see PI. 3, 64, figs. 2, 4). Sexual dimorphism: males more

elongate (see PI. 3, 62, figs. 1, 2).

Distribution : Known as yet only from the Upper Miocene near Salba§ in the Adana area of Turkey.

Explanation of Plate 3, 64

Fig. 1, 9 RV, int. lat. (broken, 640 (xm long); fig. 2, 9 RV, ext. lat. (IO 5772, 640 [xm long); fig. 3,^ LV, detail of surface ornament

(holotype, IO 5771) ; fig. 4, 9 RV, detail of surface ornament (IO 5772).

Scale A (250 fxm; x 106), figs. 1,2; scale B (50 |xm; x 548), figs. 3, 4.

■

Stereo-Atlas of Ostracod Shells 3 (13) 65-68 (1976)

595.337.3 (118.213) (560:161.036.36): 551.351 + 552.513

Cytherella ochthodes (1 of 4)

ON CYTHERELLA ( CYTHERELLOIDEA ) OCHTHODES DORUK sp. nov.

by Neriman Doruk

( University of Leicester, England )

Cytherella ( Cytherelloidea ) ochthodes sp. nov.

Holotype: Brit. Mus. (Nat. Hist.) IO 5759, $ RV.

Type locality: A road section between Babatorun and Com, 1 km SW of Babatorun, Antakya region of Turkey;

approx, lat. 36°04'N, long. 36°15'E. Uppermost Miocene; yellow sandstone with molluscan shell

fragments. Presumed littoral.

Derivation of name: From the Greek ‘hilly’, referring to the posterior scarp.

Figured specimens: Brit. Mus. (Nat. Hist.) IO 5759 ($ RV: PI. 3, 66, fig. 1 ; PI. 3, 68, fig. 2), IO 5760 ($ LV: PI. 3, 66,

fig. 2; PI. 3, 68, fig. 1).

Both specimens are from about 15 m above the base of the section at the type locality.

Explanation of Plate 3, 66

Fig. 1, ^ RV, ext. lat. (holotype, IO 5759, 710 p.m long); fig. 2, $ LV, ext. lat. (IO 5760, 620 jam long).

Scale A (250 fxm; x 115), fig. 1 ; scale B (250 [xm; x 135), fig. 2.

Stereo-Atlas of Ostracod Shells 3, 67

Cytherella ochthodes (3 of 4)

Diagnosis: Foveolate and punctate; posterior scarp inclined with variable and irregular edge.

Remarks: Differs from Cytherella ( Cytherelloidea ) variopunctata (Lienenklaus) in shape. Variable in size of

pits (see PI. 3, 66, figs. 1,2). Sexual dimorphism : males a little less high.

Distribution : Known so far only from type locality, Turkey.

Explanation of Plate 3, 68

Fig. 1, ^ LV, int. lat. (IO 5760); fig. 2, ? RV, int. lat. (holotype, IO 5759).

Scale A (250 [xm; x 135), fig. 1 ; scale B (250 [xm; x 115), fig. 2.

Stereo-Atlas of Ostracod Shells 3, 66

Cytherella ochthodes (2 of 4)

Stereo-Atlas of Ostracod Shells 3, 68

Cytherella ochthodes (4 of 4)

Stereo-Atlas of Ostracod Shells 3 (14) 69-72 (1976)

595.337.3 (118.21) (560:161.034.36): 551.35+ 552.541

Cytherella chosta (1 of 4)

ON CYTHERELLA ( CYTHERELLOIDEA ) CHOSTA DORUK sp. nov.

by Neriman Doruk

( University of Leicester, England)

Cytherella ( Cytherelloidea ) chosta sp. nov.

Holotype: Brit. Mus. (Nat. Hist.) IO 5766, 9 RV.

Type locality: A road section 11 km SW of Kuzucubelen, the Mersin area of Turkey; approx, lat. 36°45'N, long.

34°22'E. Lpwer Miocene; limestone with molluscs, foraminifera and the ostracods Bythoceratina ,

Bairdia, Buntonia and Paracypris . Presumed deep marine.

Derivation of name: From the Greek ‘piled up’, referring to the fancied resemblance of the papillate ornament to drifts

of sand.

Figured specimens: Brit. Mus. (Nat. Hist.) IO 5766(9 RV : PI. 3, 70, figs. 1, 3), IO 5767 (rf LV : PI. 3, 70, fig. 2), IO 5768

(cJ LV: PI. 3, 72, fig. 1), IO 5769 ($ RV: PI. 3, 72, figs. 2, 3).

All specimens are from the base of the type section.

Explanation of Plate 3, 70

Fig. 1, $ RV, ext. lat. (holotype, IO 5766, 770 pm long); fig. 2, <$ LV, ext. lat. (IO 5767, 760 pm long); fig. 3, 9 RV, ext. lat., detail

of papillate ornament (holotype, IO 5766).

Scale A (250 [xm; x 105), fig. 1; scale B (250 pm; x 107), fig. 2; scale C (20 pm; x 1050), fig. 3.

Stereo-Atlas of Ostracod Shells 3, 71

Cytherella chosta (3 of 4)

Diagnosis: Carapace oval shaped, surface grooved laterally. Papillate ornament in grooved areas (see PI. 3, 70,

figs. 1-3) is arranged in rows.

Remarks: The extent of the grooved areas is variable. Sexual dimorphism: males less high (see PI. 3, 70,

figs. 1, 2).

Distribution : Known as yet only from the Lower Miocene of the Mersin area of Turkey.

Explanation of Plate 3, 72

Fig. 1, LV, int. lat. (IO 5768, 755 pm long); fig. 2, 9 RV, int. lat. (IO 5769, 760 pm long); fig. 3, 9 RV, int. muse. sc. (IO 5769).

Scale A (500 pm; x 90), figs. 1,2; scale B (50 pm; x 450), fig. 3.

Cytherella chosta (2 of 4)

Stereo-Atlas of Ostracod Shells 3, 70

Cytherella chosta (4 of 4)

Stereo- Atlas of Ostracod Shells 3, 72

Stereo-Atlas of Ostracod Shells — Vol. 3, Part 1

CONTENTS

3 (1) 1-8 On Renibeyrichia mulciber Siveter gen. et sp. nov. ; by David J. Siveter (£140)

3 (2) 9-12 On Philomedes donzei Neale sp. nov.; by J. W. Neale (£0'70)

3 (3)13-20 On Centrocypris viridis Neale sp. nov. ; by J. W. Neale (£140)

3 (4)21-28 On Oncocypris pustulosa Gurney; by J. W. Neale (£1-40)

3 (5)29-36 On Stenocypris fernandoi Neale sp. nov. ; by J. W. Neale (£ 1 40)

3 (6)37-40 On Ilyocypris taprobanensis Neale sp. nov. ; by J. W. Neale (£0 70)

3 (7)41-44 On Radimella dictyon Pokorny; by R. H. Benson (£0-70)

3 (8)45-48 On Radimella darwini Pokorny ; by R. H. Benson (£0-70)

3 (9)49-52 On Radimella confragosa (Edwards); by R. H. Benson ( £0 • 70)

3(10)53-56 On Radimella? aurita (Skogsberg) ; by R. H. Benson (£0-70)

3(11)57-60 On Radimella? floridana ( Benson & Coleman); by R. H. Benson (£0'70)

3(12)61-64 On Cytherella (Cytherelloidea) petrosa Doruk sp. nov. ; by N. Doruk ( £0 • 70)

3(13)65-68 On Cytherella (Cytherelloidea) ochthodes Doruk sp. nov. ; by N. Doruk (£0-70)

3(14)69-72 On Cytherella ( Cytherelloidea ) chosta Doruk sp. nov.; by N. Doruk (£0-70)

j

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