A Stereo- Atlas of Ostracod Shells

edited by P. C. Sylvester-Bradfev and David T. Siveter

the Department of Geology
niversity of Leicester, England

INSTRUCTIONS TO AUTHORS

Contributions illustrated by scanning electron micrographs of Ostracoda in stereo-pairs
are invited. Full instructions may be obtained on request from the Editors. Format should
follow the style set by the majority of papers in this issue. The Editors should be
consulted for advice before figures for plates are mounted. Descriptive matter apart from
illustrations should be cut to a minimum; preferably each plate should be accompanied by
one page of text only.

Department of Geology, The University, Leicester.

ACKNOWLEDGEMENTS

The publication of this first volume of the Stereo-Atlas has been made possible by the
generous financial help of the British Petroleum Company Limited and Shell International
Petroleum Company Limited.

STEREO-VIEWING FOR USERS OF THE ATLAS

In order to gain 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 of such viewers are given below.

C. F. Casella & Co. Ltd., Regent House, Britannia Walk, London, N1 7ND.

Pocket stereoscope, model T15010 (£1.00 each; excluding packing and carriage).

Air Photo Supply Corp., 158, South Station, Yonkers, New York 10705.

Pocket stereoscope, model PS-2 ($8.65 each; excluding postage and handling).

The scanning electron microscope in the Department of Geology of the University of
Leicester was supplied by the Natural Environment Research Council under the terms of
Grant No. GR/3/95 for the purpose of micropalaeontological research.

Plates printed by Broadwater Press Limited, Welwyn Garden City, Herts., England.

Stereo-Atlas of Ostracod Shells, 1:16:89-92 (1973) Chrysocythere paradisus (1 of 4)

595.337.14 (118.213) (560:161.034.36): 551.351 + 552.52

ON CHRYSOCYTHERE PARADISUS DORUK sp. nov.
by Neriman Doruk

(University of Leicester, England)

Chrysocythere paradisus sp. nov.

Holotype: Brit. Mus. (Nat. Hist.) io 5189, 2 rv.

Type locality: Road cutting 3 km SW of Kuzucubelen, Mersin, Turkey. Approx, long.

34°27'E, lat. 36°48'N. Upper Miocene. Grey, sandy clay, with
molluscan shells and abundant foraminifera; presumed moderate depth.

Derivation of name: Latin, "a pleasure garden," from fancied resemblance of ornament to

gardens surrounding a fountain.

Figured specimens: Brit. Mus. (Nat. Hist.) io 5189 (RV: PI. 1:16:90, fig. 1? Pi. 1:16:92,

figs. 2, 3), 10 5190 (LV: Pi. 1:16:90, fig. 2; Pi. 1:16:92, figs. 1,
4). Both from type locality, the base of the section.

Explanation of Plate 1:16:90
Fig. 1, 2 RV, ext.; fig. 2, 2 LV, ext.

Scale A (250 ym ; x97) , fig. 1; scale B (250 ym ; x94) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:16:91 Chrysocythere paradisus (3 of 4)

Diagnosis: Polygonal fossae arranged in radiate groups, like the petals of a
flower, surrounding raised, intramural pores, which stand up on
pillars.

Remarks: Differs from C. cataphracta Ruggieri, 1962 (see Sylvester-Bradley &
Ruggieri 1973, Stereo-Atlas of Ostracod Shells, vol. 1, pt. 1, pp.
31-34) in details of reticulum. Sexual dimorphism distinct, males less
high and longer.

Distribution: Middle and Upper Miocene of Mersin and Adana areas,
Turkey .

Explanation of Plate 1:16:92

Fig. 1, 2 LV, int.; fig. 2, 2 RV, int.; fig. 3, RV, int. vent, knob-like structure;
fig. 4, LV, int. muse. sc.

Scale A (250 ym ; x78) , fig. 1; scale B (250 ym ; x82) , fig. 2; scale C (50 ym ; x434) ,
fig. 3; scale D (100 ym ; *288) , fig. 4.

Stereo-Atlas of Ostracod Shells, 1:16:90 Chrysocythere paradisus (2 of 4)

Stereo-Atlas of Ostracod Shells, 1:16:92 Chrysocythere paradisus (4 of 4)

Stereo-Atlas of Ostracod Shells, 1:17:93-96 (1973)
595.337.14 (119.9) (261.68:164.071.54): 551.352 (24.08.270)

Procythereis torquata (1 of 4)

ON PROCYTHEREIS TORQUATA (SKOGSBERG)
by Richard H. Benson

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

Genus PROCYTHEREIS Skogsberg, 1928

Type-species (original designation) : Cythereis (Procythereis) torquata Skogsberg, 1928

Procythereis torquata (Skogsberg, 1928)

Cythereis (Procythereis) torquata Skogsberg, Calif. Acad. Sci. Occas . Pap. , vol. 15, p. 19,
pi. 1, fig. 1, pi. 4, fig. 2, text-fig. 1 (1928).

Procythereis torquata (Skogsberg); Benson, Univ. Kans. Paleont. Contr. Arthro ., no. 6, p. 28,
(1964) .

Syntypes: U.S.N.M. 127428 and 127440.

Type locality: Tierra del Fuego, Puerto Condor.

Figured specimens: U.S.N.M. Coll. nos. 190025 (LV: PI. 1:17:94, fig. 1) 190027 (RV:

Pi. 1:17:94, fig. 2), and 190427 (RV: Pi. 1:17:96, figs. 1, 2). All
Recent from Tierra del Fuego, Cape Valentyn, Hero station no. 44,
depth 270 m, lat. 53°31'S, long. 70°33'W.

Explanation of Plate 1:17:94

Fig. 1, LV ext.; fig. 2, RV ext.

Scale A (250 ym ; x86) , fig. 1; scale B (250 ym ; *88) , fig* 2*

Stereo-Atlas of Ostracod Shells, 1:17:95 Procythereis torquata (3 of 4)

Text-fig. 1. Appendages and muscle-
scar pattern of Procythereis torquata.

Specimen from R/V Eltanin Station 453
(Ref: 477), E coast of Tierra del
Fuego; lat. 54°27'S, long. 66°12'W,
depth 31 m, coll. 21 January 1963.

1-2. Lt. and rt. partially fused
first antennae.

3-5. Thoracic legs, front to rear.

6. Thaerocytherid muscle-scar
pattern.

7. Mandible with trifurcate
mandibular epipodite.

8. Second antenna with spinning
bristle and feeder gland.

Explanation of Plate 1:17:96

Fig. 1, RV intc; fig. 2, int. muse. sc.

Scale A (250 ym ; *88) , fig* 1; scale B (125 ym ; *272) , fig* 2.

Stereo-Atlas of Ostracod Shells, 1:17:94

Procythereis torquata (2 of 4)

Stereo-Atlas of Ostracod Shells, 1:17:96

Procythereis torquata (4 of 4)

Stereo-Atlas of Ostracod Shells, 1:18:97-100 Procythereis iganderssoni (1 of 4)

595.337.14 (119.9) (261.68:164.073.54 + 261.68:164.071.54): 551.35 (24.08.22 + 24.08.270)

ON PR0CYTHERE IS IGANDERSSONI (SK0GSBERG)
by Richard H. Benson

(Smithsonian Institution 3 Washington 3 D.C. U.S.A.)

Procythereis iganderssoni [Skogsberg, 1928)

Cythereis (Procythereis) iganderssoni Skogsberg, Calif. Acad. Sci. Occas . Pap., vol. 15,
p. 24, pi. 1, fig. 2, text-fig. 2 (1928).

Procythereis iganderssoni (Skogsberg); Hartmann, Mitt. hamh. zool . Mus. Inst., 60, p. 237
(1962) .

Procythereis iganderssoni (Skogsberg); Benson, Univ. Kans. Paleont. Contr. Arthro . , no. 6,
p. 28 (1964).

Explanation of Plate 1:18:98

Fig. 1, LV ext.; fig. 2, RV ext.

Scale A (250 yin ; xl05) , figs. 1, 2.

Stereo-Atlas of Ostracod Shells, 1:18:99 Procythereis iganderssoni (3 of 4)

Syntypes: u.s.n.m. 127417

Type locality: Tierra del Fuego, Cape Valentyn.

Figured specimens: U.S.N.M. Coll. nos. 190019 (LV: Pi. 1:18:98, fig. 1), Recent from

Tierra del Fuego, Fortesque Bay, Hero station 48, depth 22 m; lat.
53°41'S, long. 72°0'45,,W. 190026 (RV: Pi. 1:18:98, fig. 2) and 190554
(RV: Pi. 1:18:100, figs. 1, 2), both Recent from Tierra del Fuego,
Cape Valentyn, Hero station 44, depth 270 m; lat. 53°31'S, long.
70°33'W.

Explanation of Plate 1:18:100

Fig. 1, RV int.; fig. 2, int. muse. sc.

Scale A (250 ym ; xio7) , fig. 1; scale B (125 ym ; x280) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:19:101-108 (1973) Pattersoncypris micropapillosa (1 of 8)
595.337.12 (116.312/116.313) (81:164.040.08): 551.312+552.53/553.54

ON PATTERSONCYPRIS MICROPAPILLOSA BATE
by R. H. Bate

(British Museum ( Natural History) 9 London)

Genus PATTERSONCYPRIS Bate, 1972

Type-species (original designation): Pattersoncypris micropapillosa Bate, 1972

Pattersoncypris micropapillosa Bate, 1972

Pattersoncypris micropapillosa sp. nov. R. H. Bate, Palaeontology, vol. 15, pt. 3, p. 381,
pis. 66-71 (1972).

Holotype: Brit. Mus. (Nat. Hist.) 10 4680, 2 carapace.

Type locality: Santana Formation (Aptian/Albian) , Serra do Araripe, Ceara, Brazil.

Figured specimens: Brit. Mus. (Nat. Hist.) io 4693 ( 2 car.: PI. 1:19:102, fig. 1), 10 4707^

(2 : PI. 1:19:102, figs. 2, 3), IO 4714 ( 2 : Pi. 1:19:104, fig. 1),

IO 4708 ( 2 car.: Pi. 1:19:104, fig. 2; Pi. 1:19:106, fig. 3), IO 4710
(d* car.: Pi. 1:19:106, fig. 1), IO 4718 ( 2 car.: Pi. 1:19:106, fig. 2),
IO 4692 ( 2 car.: Pi. 1:19:108, fig. 1), IO 5027 ( 2 car.: Pi. 1:19:108,
figs. 2-3). All from the type locality.

Explanation of Plate 1:19:102

Fig. 1, 2 car., RV & furca. ; fig. 2, 2 antennules, antennae with swimming setae, mandible &
maxilla; fig. 3, 2 showing appendages.

Scale A (250 ym ; *73) , fig. 1; scale B (100 ym ; xl75) , fig. 2; scale C (250 ym ; xioo) ,
fig. 3.

Stereo-Atlas of Ostracod Shells, 1:19:103 Pattersoncypris micropapillosa (3 of 8)

Diagnosis: Pattersoncypris having very small papillae on ventral surface.

Remarks: All figured specimens were obtained during the acetic acid treatment of
fish skeletons from two calcareous nodules. The ostracods were released
from the calcareous nodules because the calcium carbonate of the shells
had been altered to calcium phosphate. Similarly the excellent preserv-
ation of the soft tissue is due to their mineralisation soon after death;
there is no evidence of decay. The assignment of Pattersoncypris to the
Cyprididae on details of the carapace shape, hinge and muscle scars is
confirmed by the soft part anatomy, especially that of the 1st. thoracic
appendage which is adapted proximally for pushing food into the mouth
and distally terminates in an inwardly turned hook. Unlike modern cyprids,
however, this terminal hook is present in the female as well as in the
male . In modem cyprids the male uses the hooks to grasp the female
during mating; the hook prevents him from sliding off the posterodorsal
part of her carapace. That the female also possesses thoracic hooks
might indicate that she also used these in mating, suggesting a probable
venter to venter position, currently unknown amongst freshwater ostracods
but recorded for some marine species. Apart from the terminal hook of the
1st. thoracic appendage being present in the female the remaining
anatomy is typical of the family which has undergone little change since
Lower Cretaceous times.

Explanation of Plate 1:19:104

Fig. 1, 2 , branchial plate; fig. 2, 2 , upper lip, mandibles, maxillae, 1st. thoracic
appendages.

Scale A (100 ym ; x350) , fig. 1; scale B (100 ym ; x400) , fig. 2.

_ ; 4-

I

Pattersoncypris micropapillosa (2 of 8)

Stereo-Atlas of Ostracod Shells, 1:19:104

Stereo-Atlas of Ostracod Shells, 1:19:102

Pattersoncypris micropapillosa (4 of 8)

Stereo-Atlas of Ostracod Shells , 1:19:105 Pattersoncypris micropapillosa (5 of 8)

Explanation of Plate 1:19:106

Fig. 1, a* car., copulatory appendage; fig. 2, ? car., antennules, antennae; fig. 3, $ car.,
2nd. and 3rd. thoracic appendages.

Scale A (250 ym ; *80) , fig. 1; scale B (100 yin ; xl50) , figs. 2, 3.

Stereo- Atlas of Ostracod Shells, 1:39:107 Pattersoncypris micropapillosa (7 of 8)

Remarks (ccntd.): Perhaps the most remarkable preservation is that found in specimen

10 5027, a female carapace, in which the sensory setae are still pre-
served. Little or no work has been undertaken on the marginal setae of
living ostracods which makes it difficult to comment on the significance
of the conical terminal caps. Close examination of the terminal caps
reveals fine striae extending around the cap (Pi. 1:19:108). This
emphasises the incredible fineness of detail which has survived for 100
million years.

Explanation of Plate 1:19:108

Fig. 1, $ car., LV; figs. 2, 3, $ car., anterior marginal setae with terminal caps.

Scale A (250 ym ; *73) , fig. 1; scale B (25 ym ; *600) , fig. 2; scale C (3 ym ; *6400) ,
fig. 3.

Stereo- Atlas of Ostracod Shells, 1:19:108

Stereo-Atlas of Ostracod Shells, 1:19:106

Pattersoncypris micropapillosa (6 of 8)

Pattersoncypris micropapillosa (8 of 8)

Stereo-Atlas of Ostracod Shells, 1:20:109-116 (1973) Mutilus retiformis (1 of 8)

595.337.14 (118.22) (458.1:161.012.37): 551.35+552.542

ON MUTILUS RETIFORMIS (TERQUBf)
by G. Ruggieri and P. C. Sylvester-Bradley
(University of Palermo Italy and University of Leicester 3 England)

Genus MUTILUS Neviani, 1928

Type-species (designated by Ruggieri, 1956): Cythereis (Mutilus) laticancellata Neviani,

1928 [=Cythere retiformis Terquem, 1878, fid. Ruggieri, 1956]

Mutilus retiformis (Terquem, 1878)

Cythere retiformis sp. nov. Terquem, Mdm. Soc. geol . Fr., ser. 3, vol. 1, p. 116, pi. 13,
figs. 16a-d (1878).

Cythereis (Mutilus) laticancellata sp. nov. Neviani, Memorie Accad. pont. Nuovi Lincei ,
ser. 2, vol. 11, p. 93, pi. 2, figs. 66-68 (1928).

Mutilus (Mutilus) retiformis (Terquem); Ruggieri, Atti . Soc. ital . Sci . nat. , vol. 95, pp.
169-171, figs. 2-3 (1956).

Mutilus retiformis (Terquem); Sissingh, Bull. Micropaleontol . Utrecht, vol. 6, p. 124, pi. 9,
fig. 12 (1972).

Explanation of Plate 1:20:110

Figs. 1-3 RV: fig. 1, ext. lat. ; fig. 2, ext. vent.; fig. 3, ext. dors. obi. Fig. 4, LV
ext. lat.

Scale A (500 ym ; x72) , figs. 1, 4 (length of both specimens, 800 ym) ; scale B (500 ym ;
x68) , figs. 2, 3.

Stereo- Atlas of Ostracod Shells, 1:20:111

Mutilus retiformis (3 of 8)

Type specimens: Natural History Museum, Paris [fid. Catalogue of Ostracoda, Ellis &
Messina] .

Type locality: Upper Pliocene or Lower Quaternary, Rhodes, Greece.

Figured specimens: Brit. Mus. (Nat. Hist.) 10 5546 (RV: Pi. 1:20:110, figs. 1-3; PI.

1:20:112, figs. 1, 2), 10 5547 (LV: Pi. 1:20:110, fig. 4; PI. 1:20:112,
fig. 3), 10 5548 (LV: Pi. 1:20:114, figs. 1, 5, 6; PI. 1:20:116,
figs. 1-4), 10 5549 (RV: Pi. 1:20:114, figs. 2-4). All specimens
from Middle Pliocene (grey marls) of River Modione, near Portanna,
(Trapani, Sicily), long. 12o50'E, lat. 37°22'N (coll. G. Ruggieri).

Diagnosis: Sub-quadrate in lateral outline with wide, deep polygonal fossae.

Explanation of Plate 1:20:112

Figs. 1-2 RV ext. lat. to show normal pore canals; fig. 3, LV ext. lat. to show eye tubercle.

Scale A (100 ym ; x330) , fig. 1; scale B (50 ym ; x660) , fig. 2; scale C (100 ym ; x350) ,
fig. 3.

Stereo-Atlas of Ostracod Shells, 1:20:110

Mutilus retiformis (2 of 8)

Stereo-Atlas of Ostracod Shells, 1:20:112

Mutilus retiformis (4 of 8)

Stereo-Atlas of Ostracod Shells, 1:20:113 Mutilus retiformis (5 of 8)

Remarks: Van Morkhoven (1963, Post-Palaeozoic Ostracoda, vol. 2, p. 138) claimed
that Cythere retiformis Terquem was "conspicuously different in outline
and not identical" to Cythereis laticancellata Neviani, and thought that
C. retiformis might be a junior synonym of Cythere normani Brady, 1866.
He was placing too much reliance on the rough sketches of Neviani and
he was wrong about C. normani, for this species belongs to the genus
Bradleya (Benson 1972, Smithson . Contr . Paleobiol., no. 12, pp. 38-39,
text-fig. 13c; pi. 1, fig. 7; pi. 7, fig. 8) and it does not occur in
either the Pliocene of Vallebiaia (the type locality of C. lati-
cancellata) , or (so far as we know) in the Island of Rhodes (the type
locality of C. retiformis) whereas M. retiformis as here interpreted is
abundant in both localities.

Explanation of Plate 1:20:114

Figs. 1, 5, 6, LV int. lat.; figs. 2-4, RV int. lat.; with details of terminal elements
of hinge.

Scale A (500 ym ; x70) , figs. 1, 2 (length of both specimens, 820 ym) ; scale B (20 ym ;
*210) , figs. 3-6.

Stereo-Atlas of Ostracod Shells, 1:20:115 Mutilus retiformis (7 of 8)

Remarks (contd.): Sissingh (1972, op. cit., p. 124) suggested that what he termed

"tubular normal pore canals" should be given special diagnostic weight
in the generic definition. The figures we give of the normal pore canals
show that the sieve plates terminate in bosses which rise from the sola
of each fossa (Pi. 1:20:112, figs. 1, 2). We doubt whether these are
properly described as "tubular normal pore canals." Pores also
terminate higher chimney-like structures between some of the fossae which
border the dorsal and ventral margins (Pi. 1:20:110, figs. 1-4), but
these appear to be relicts of intramural pores that hav6 survived the
degeneration of the transverse muri. We have been unable to determined
whether or not they contain sieve plates.

The stellar scars on the internal tubercles that lie to the posterior
of the mandibular fulcrum (Pi. 1:20:116, figs. 1-4) are found also in
other species of the genus. We suggest the term "stellar tubercle" for
this feature. Two stellar tubercles are developed on each valve, both
lying to the posterior of the mandibular fulcrum, one dorsally and one
ventrally situate, and forming with the mandibular fulcrum an isosceles
triangle (Pi. 1:20:114, figs. 1, 2; Pi. 1:20:116, fig. 1).

Explanation of Plate 1:20:116

Figs. 1-4 LV int. lat. to show muse, sc., mandibular fulcrum, vent, stellar tubercle.

Scale A (100 ym ; x280) , fig. 1; scale B (20 ym ; xgso) , fig. 2; scale C (10 ym ; xi960) ,
fig. 3; scale D (5 ym ; x5000) , fig. 4.

Stereo-Atlas of Ostracod Shells, 1:20:114

Mutilus retiformis (6 of 8)

Stereo-Atlas of Ostracod Shells, 1:20:116

Mutilus retiformis (8 of 8)

Stereo-Atlas of Ostracod Shells, 1:21:117-120 (1973)
595.337.14 (118.213) (560:161.036.36): 551.351+552.513

Mutilus keiji (1 of 4)

ON MUTILUS KEIJI RUGGIERI
by Neriman Doruk

(University of Leicester 3 England)

Mutilus keiji Ruggieri, 1962

Mutilus (Mutilus) keiji G. Ruggieri, Paleontogr. ital . , vol. 56, mem. 2, p. 36, pi. 4, figs.

5-7 (1962).

Holotype: Istituto di Geologia e Paleontologia, Palermo (OCR, Si. no. 1339), 2 ,
carapace.

Type locality: Enna, Italy. Approx, lat. 37°34'N, long. 14°17'E. Tortonian. Grey sandy
clay with abundant foraminifera, and Ostrea, Chlamys , Balanus and
echinoderm shells.

Figured specimens: Brit. Mus. (Nat. Hist.) 10 4937 (RV: PI. 1:21:118, fig. 1; PI. 1:21:120,

fig. 2), 10 4938 (LV: Pi. 1:21:118, fig. 2), 10 4939 (LV: Pi. 1:21:120,
figs. 1, 3). All from a road cutting between Babatorun and Com, Turkey;

1 km SW of Babatorun. Uppermost Miocene. 10 4937 and 10 4939 from the
base; 10 4938 4 m from the base of the section. Yellow sandstone with
abundant foraminifera and molluscan shell fragments, presumed shallow
marine (littoral). Approx, long. 36°15'E, lat. 36°04'N.

Explanation of Plate 1:21:118

Fig. 1, 2 RV, ext.; fig. 2, a* LV, ext.

Scale A (250 ym ; xl23) , fig. 1; scale B (250 ym ; *118) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:21:119 Mutilus keiji (3 of 4)

Diagnosis: Surface reticulate, fossae large, deep.

Remarks: Always three frontal scars, 5-6 adductor scars, with undivided

or divided ventromedian scars (see text-fig. 1, and Pi. 1:21:120,
fig. 3). Posterior marginal spines: 3-9; anterior marginal
spines: 8-18. Sexual dimorphism: males more elongate.

Distribution: Tortonian, Italy (Ruggieri 1962) ; Upper Miocene in
Tarsus and Antakya regions of Turkey.

Text-fig. 1 Muscle scars

fioo

o <5?

0

Explanation of Plate 1:21:120

Fig. 1, 2 LV, int.; fig. 2, 2 RV, int.; fig. 3, LV, int. muse. sc.
Scale A (250 ym ; xioi) , figs. 1, 2; scale B (100 ym ; x306) , fig. 3.

Mutilus. keiji (2 of 4)

Mutilus keiji (4 of 4)

Stereo-Atlas of Ostracod Shells, 1:21:118

Stereo-Atlas of Ostracod Shells, 1:21:120

Stereo-Atlas of Ostracod Shells, 1:22:121-124 (1973) Mutilus cimbaeformis (1 of 4)

595.337.14 (118.22 + 119) (564.3:161.033.35 + 454.3:161.011.44): 551.351 + 552.513

ON MUTILUS CIMBAEFORMIS (SEGUENZA)
by Neriman Doruk

(University of Leicester } England)

Mutilus cimbaeformis (Seguenza, 1882)

Cythere cimbaeformis G. Sequenza, Naturalista sicil. , II-V, p. 22, pi. 1, figs. 6a-d (1882) .h
Hemicythere cimbaeformis (Sequenza); G. Ruggieri, G. Geol., ser. 2, vol. 21, p. 1, fig. 2,
text-fig. 22 (1950) .

Mutilus cimbaeformis (Seguenza) ; F. Uliczny, Hemicytheridae und Trachyleberididae aus dem
Pliozan der Insel Kephallinia, Dissertation, Univ. Munich, p. 52, pi. 14, fig. 7 (1969).

Holotype : Depository not known. Probably lost during Messina earthquake of 1908
(Ruggieri 1963, Boll. Soc. paleont. ital. , 1 (2), p. 3).

Type locality; Rizzola, Sicily. Quaternary.

Explanation of Plate 1:22:122

Fig. 1, 2 RV, ext.; fig. 2, c f LV, ext.

Scale A (250 ym ; x98) , fig. 1; scale B (250 ym ; xl07) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:22:123

Mutilus cimbaeformis (3 of 4)

Figured specimens: Brit. Mus. (Nat. Hist.) 10 4940 (RV: PI. 1:22:122, fig. 1), 10 4941 (LV:

Pi. 1:22:122, fig. 2), 10 4942 (LV: Pi. 1:22:124, fig. 1), 10 4943 (RV:
Pi. 1:22:124, figs. 2, 3). 10 4940, 10 4942 and 10 4943 from drillings
at Kato-Lakatamia, Cyprus, 4-5 km SW of Nicosia; Pliocene; presumed
shallow marine; approx, lat. 35°08'N, long. 33°18'E. 10 4941 from Imola,
Italy; Quaternary; fine-grained sandstone; approx, long. ll043'E, lat.
44°22'N (coll. G. Ruggieri).

Diagnosis: Characteristic ornament.

Remarks: Always 3 frontal scars; 5 adductor scars (see Pi. 1:22:124, fig. 3).
Posterior with variable number of marginal spines (1-6) . Sexual
dimorphism: males more elongate. Anterior marginal carina continuous
with ventrolateral carina in males, interrupted by 1 or 2 fossae in
females (see Pi. 1:22:122, figs. 1, 2).

Distribution : Post-Pliocene, Quaternary; Italy (Ruggieri 1950) . Middle Pliocene-
Pleistocene; Greece (Uliczny 1969) , Cyprus and Turkey.

Explanation of Plate 1:22:124

Fig. 1, ? LV, int.; fig. 2, ? RV, int.; fig. 3, RV, int. muse. sc.
Scale A (250 ym ; x85) , figs. 1, 2; scale B (100 ym ; x280) , fig. 3.

Stereo-Atlas of Ostracod Shells, 1:22:122

Mutilus cimbaeformis (2 of 4)

Mutilus freudenthali (1 of 4)

Stereo-Atlas of Ostracod Shells, 1:23:125-128 (1973)
595.337.14 (118.213) (560:161.036.36): 551.351 + 552.54

ON MUTILUS FREUDENTHALI (SISSINGH)
by Neriman Doruk

(University of Leicester 3 England)

Mutilus freudenthali (Sissingh, 1972)

Aurila freudenthali W. Sissingh, Bull. Micropaleontol . Utrecht, vol. 6, p. 116, pi. 9,
fig. 3 (1972).

Holotype: Deposited in the Utrecht Micropalaeontological collection, o* LV.

Type locality: Province of Khania, Crete, S Aegean Islands (see Sissingh 1972, p. 19).

Approx, long. 24°20'E, lat. 35°25'N. Upper Miocene (Tortonian) 1 White
and beige fossiliferous marls with abundant concretions.

Figured specimens: Brit. Mus. (Nat. Hist.) 10 4994 (RV: PI. 1:23:126, fig. 1; Pi. 1:23:128,

fig. 2), 10 4995 (LV: Pi. 1:23:126, fig. 2), 10 4996 (RV: Pi. 1:23:128,
fig. 3). The specimen figured in Pi. 1:23:128, fig. 1 has been broken
after photography. All the figured specimens are from a stream cutting
about 200-300 m S of Sanli village, Antakya region of Turkey. Tortonian
(Upper Miocene). Bioclastic limestone with molluscan shells, presumed
shallow marine (sublittoral). Approx, long. 36°13'E, lat. 36°07'N.

Explanation of Plate 1:23:126

Fig. 1, <f RV, ext.; fig. 2, 2 LV, ext.

Scale A (250 ym ; x93) , fig. 1; scale B (250 ym ; *88) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:23:127 Mutilus freudenthali (3 of 4)

Diagnosis: Semicircular outline with horizontal venter giving triangular cross
section. Deeply punctate, the fossae variably shaped, with excavate
muri; surface minutely foveolate.

Remarks: Always 3 frontal scars; 4-6 adductor scars with undivided or divided
median scars. Sexual dimorphism: females more convex dorsally.

Distribution: Upper Miocene (Tortonian) of Crete, Aegean Islands (Sissingh 1972);
Upper and uppermost Miocene of Antakya region, Turkey.

Explanation of Plate 1:23:128

Fig. 1, cs* LV, int.; fig. 2, d* RV, int.; fig. 3, RV, int. muse. sc.

Scale A (250 ym ; *72), fig. 1; scale B (250 ym ; *75) , fig. 2; scale C (100 ym ; *232) ,
fig. 3.

Stereo-Atlas of Ostracod Shells, 1:23:126 Mutilus freudenthali (2 of 4)

Stereo-Atlas of Ostracod Shells, 1:24:129-136 (1973) Mutilus convexus (1 of 8)

595.337.14 (119.9 + 118.22) (262.4:161.026.38 + 564.3:161.033.35 + 429.9:162.006.51): 551.351

ON MUTILUS CONVEXUS (BAIRD)
by Neriman Doruk

(University of Leicester, England)

Mutilus conveccus (Baird, 1850)

Cythere convexa W. Baird, Ray. Soc . Pubis., p. 134, pi. 21, fig. 3 (1850).

Cythereis convexa (Baird); G. W. Muller, Zool. Jber. Neapel., Berlin, no. 21, p. 366, pi. 28,.
figs. 14, 19; pi. 30, figs. 49-51; pi. 35, figs. 6, 13, 19-21 (1894)

[ non Hemicythere convexa (Baird); G. Ruggieri, G. Geol . , ser. 2, vol. 23, p. 88, pi. 6,
fig. 56 (1953).]

Aurila convexa (Baird); V. Pokorny, Acta Univ. Carol. Geol., 3, p. 17, figs. 8-14 (1955).
Aurila convexa (Baird); C. W. Wagner, Sur les Ostracodes du Quaternaire Recent des Pays-Bas
et leur utilisation dans l'etude geologique des depots Holocenes, Dissertation, Univ. de
Paris, p. 59, pi. 25, figs. 1-6 (1957).

Aurila livathoensis F. Uliczny, Hemicytheridae und Trachyleberididae aus dem Pliozan der
Insel Kephallinia , Dissertation, Univ. Munich, p. 32, pi. 12, figs. 7-9; [non A. c. convexa
(Baird) p. 21, pi. 11, figs. 1, 2; non A. c. emathiae p. 22, pi. 1, figs. 7, 8, pi. 11,
figs. 3, 4] (1969).

[non Aurila convexa (Baird); H. Uffenorde, Gottinger Arb. Geol. Palaont. , no. 13, p. 77,
pi. 8, fig. 4 (1972).]

Explanation of Plate 1:24:130

Fig. 1, ? RV, ext.; fig. 2, ? LV, ext.

Scale A (250 ym ; *107) , fig. 1; scale B (250 ym ; xll5) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:24:131 Mutilus convexus (3 of 8)

Syntypes: Types from Tenby kept in the Zoological section of British Museum.

Type localities: Torquay, SE Devonshire; Tenby, S Wales.

Figured specimens: Brit. Mus. (Nat. Hist.) 10 5659 (RV: Pi. 1:24:130, fig. 1), 10 5660 (LV:

Pi. 1:24:130, fig. 2; Pi. 1:24:132, fig. 1), 10 5661 (RV: Pi. 1:24:132,
figs. 2, 3), 10 5662 (RV: Pi. 1:24:134, fig. 1), 10 5663 (LV:

Pi. 1:24:134, fig. 2; Pi. 1:24:136, fig. 3), 10 5664 (LV: PI. 1:24:136,
fig. 1), 10 5716 (LV: Pi. 1:24:136, fig. 2). 10 5659 dredged from Urla
Bay, W coast of Turkey, 20 m below surface; subrecent; littoral; approx,
long. 26°47'E, lat. 38°19'N. 10 5660, 10 5661 and 10 5716 from drillings
near Nicosia, Cyprus; Pliocene; presumed littoral; approx, lat. 35°08'N,
long. 33°18'E. 10 5662, 10 5663 and 10 5664 from Westdale Bay, Wales;
Recent; approx, lat. 51°43'N, long. 5°11'W (coll, by P. C. Sylvester-
Bradley) .

Diagnosis: Shape distinctive, opaque area of consistent pattern.

Explanation of Plate 1:24:132

Fig. 1, 9 LV, int.; fig. 2, a* RV, int.; fig. 3, RV, int. muse. sc.
Scale A (250 ym ; *97), figs. 1, 2; scale B (100 ym ; *300) , fig. 3.

Stereo-Atlas of Ostracod Shells, 1:24:130

Mutilus convexus (2 of 8)

Stereo-Atlas of Ostracod Shells, 1:24:133 Mutilus convexus (5 of 8)

_ Remarks: Generic assignment: Cythere convexa Baird is the type species of the
genus Aurila Pokorny (1955, p. 17). Sissingh (Bull. Micropaleontol .
Utrecht, 1972, p. 24) claims to be able to distinguish Mutilus from
Aurila on the basis of "tubular pore canals." I have been unable to find
any consistent difference between the pore canals of species assigned to
the two genera. Indeed all characters appear to be gradational and I am
forced to regard the two genera as synonymous. Differs from M. speyeri
(Brady) and M. versiculatus in shape. Frontal scars 2 or 3; adductor
scars 5 or 6 with undivided or divided ventromedian adductor scars.

Opaque area
LV *53

Sexual dimorphism: males less high (see Pi. 1:24:136, fig. 2).

Distribution: Recent in Atlantic and Mediterranean. Miocene-Quaternary as fossil in
Europe. Miocene, Pliocene and Recent in Turkey and Cyprus.

Explanation of Plate 1:24:134
Fig. 1, 2 RV, ext.; fig. 2, ? LV, ext.

Scale A (250 ym ; *105) , figs. 1, 2.

Stereo-Atlas of Ostracod Shells, 1:24:135

Mutilus convexus (7 of 8)

Explanation of Plate 1:24:136

Fig. 1, sieve plates and papillate fossae; fig. 2, o" LV, ext.; fig. 3, detail of post.

Scale A (10 ym ; *2160) , fig. 1; scale B (250 ym ; *94), fig. 2; scale C (250 ym ; *450) ,
fig. 3.

Stereo-Atlas of Ostracod Shells, 1:24:134

Mutilus convexus (6 of 8)

Stereo-Atlas of Ostracod Shells, 1:24:136

Mutilus convexus (8 of 8)

Stereo-Atlas of Ostracod Shells, 1:25:137-140 (1973) Mutilus speyeri (1 of A)

595.337.14 (118.22 + 119.1) (262.2:161.035.36): 551.351

ON MUTILUS SPEYERI (BRADY)
by Neriman Doruk

(University of Leicester England)

Mutilus speyeri (Brady, 1868)

Cythere speyeri G. S. Brady, Ann. Mag. nat. Hist., vol. 4, ser. 2, p. 222, pi. 15, fig. 8,
non figs. 9-11 (1868).

Cythereis speyeri (Brady); G. W. Muller, Zool . Jber . Neapel., Berlin, no. 21, p. 367,.
pi. 32, figs. 24, 25, 28 (1894).

Aurila speyeri (Brady); P. Ascoli, Archo Oceanogr . Limnol., vol. 14, fas. 1, p. 97, pi. 1,
fig. 5 (1965).

Syntypes: Apparently at Hancock Museum, Newcastle-upon-Tyne, England ( Ostracod -
ologist, no. 19, pp. 7, 12, June 1972 & Sissingh 1972).

Type localities: Islands of Siros and Tenedos off the W coast of Turkey.

Figured specimens: Brito Mus. (Nat. Hist.) 10 4976 (RV: Pi. 1:25:138, fig. 1; PI. 1:25:140,

figs. 2, 3), 10 4977 (LV: Pi. 1:25:138, fig. 2; Pi. 1:25:140, fig. 1).
Both from drillings off the S coast of Turkey; Pliocene-Pleistocene,

340 feet below the sea floor; presumed shallow marine. Approx, long.
35°04 *E , lat. 36°26'N.

Explanation of Plate 1:25:138

Fig. 1, ? RV, ext.; fig. 2, ? LV, ext.

Scale A (250 ym ; *84) , fig. 1; scale B (250 ym ; *81) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:25:139 Mutilus speyeri (3 of 4)

Diagnosis: Rectangular shape, evenly rounded dorsal arch. Diagnostic opaque area.
Remarks: Sexual dimorphism: females shorter and a little higher.

Distribution: Recent: W coast of Turkey (Brady 1868) ; Gulf of Naples (Muller 1894) ;

Adriatic Sea (Ascoli 1965; Masoli 1968, Mem. Mus. Tridentino Sci. Nat.);
Limskikanal, Istrian coast (Uffenorde 1972, Gottinger Arb . Geol.
Palaont.) . Pliocene-Pleistocene: Cephalonia, Greece (Uliczny 1969,
Hemicytheridae und Trachyleberididae aus dem Pliozan der Insel
Kephallinia. Dissertation, Univ. Munich); Rhodes, Greece (Sissingh
1972, Bull. Micropaleontol . Utrecht ); Turkey.

Explanation of Plate 1:25:140

Fig. 1, $ LV, int.; fig. 2, $ RV, int. ; fig. 3, RV, int. muse. sc.

Scale A (250 ym ; x65) , fig. 1; scale B (250 ym ; x68) , fig. 2; scale C (100 ym ; x292) ,
fig. 3.

Stereo-Atlas of Ostracod Shells, 1:25:140

Mutilus speyeri (4 of 4)

Stereo-Atlas of Ostracod Shells, 1:26:141-144 (1973) Mutilus albicans (1 of 4)

595.337.14 (118.213) (560:161.036.36 + 454.4:161.012.43): 551.351 + 552.513 + 552.54

ON MUTILUS ALBICANS RUGGIERI
by Neriman Doruk

(University of Leicester 3 England)

Mutilus albicans Ruggieri, 1958

Mutilus (Aurila) albicans G. Ruggieri, Atti. Soc . ital . Sci . nat . , vol. 97, ser. 2, p. 133,
figs. 1, 2, 16-21, 26, 27 (1958).

Aurila albicans (-Ruggieri); W. Sissingh, Bull. Micropaleontol . Utrecht. , vol. 5, p. 113,
pi. 8, fig. 4 (1972).

Holotype: o* L V, OCR Si. 1605/1. Deposited in the Istituto di Geologia e

Paleontologia (University of Palermo) .

Type locality: Republic of San Marino, near Casa i Gessi, Italy. Approx, long. 12°26'E,
lat. 43°56'N. Upper Miocene (Sahelian).

Figured specimens: Brit. Mus. (Nat. Hist.) 10 5654 (RV: Pi. 1:26:142, fig. 1), 10 5655 (LV:

Pi. 1:26:142, fig. 2), 10 5656 (LV: Pi. 1:26:144, fig. 1), 10 5657 (RV:
PI. 1:26:144, fig. 3), 10 5658 (RV: Pi. 1:26:144, fig. 2). 10 5654 and
10 5655, from a stream cutting about 300 m S of Sanli, Turkey; Upper
Miocene bioclastic limestone; presumed shallow marine; approx, long.
36°13 *E, lat. 36°07,N.

Explanation of Plate 1:26:142

Fig. 1, <f RV, ext.; fig. 2, $ LV, ext.

Scale A (500 ym ; *79) , fig. 1; scale B (500 ym ; x84) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:26:143 Mutilus albicans (3 of 4)

Figured specimens: 10 5656 and 10 5657 from a road cutting 1 km SW of Babatorun, Turkey;

(cantd. ) Uppermost Miocene; yellow sandstone; presumed littoral; approx, long.

36°15'E, lat. 36°04'N. 10 5658 from type locality (coll. G. Ruggieri).

Text-fig. 1 Opaque area RV *48

Text-fig. 2 Muscle scars

Diagnosis: The outline is diagnostic and the carapace rather tumid.

Remarks: Frontal scars 2 or 3; adductor scars 5 or 6 with undivided or divided

ventromedian scars (see text-fig. 2) . Eye tubercle slightly to strongly
marked. Varies in size and in the number of puncta. Juveniles with more
puncta. Sexual dimorphism very distinct; males more elongate and less
tumid. Distribution: Middle-Upper Miocene, Gavdhos and Crete, S Aegean
Islands (Sissingh 1972) ; Upper Miocene, San Marino, Italy (Ruggieri
1858) , and Antakya region, Turkey.

Explanation of Plate 1:26:144

Fig. 1, d LV, int.; fig. 2, c f RV, int. ; fig. 3, int. muse. sc.

Scale A (500 ym ; *76) , fig. 1; scale B (500 ym ; *69) fig* 2 ; scale C (100 ym ; *280) t
fig. 3.

Stereo-Atlas of Ostracod Shells, 1:26:142

Stereo-Atlas of Ostracod Shells, 1:26:144

Mutilus albicans (4 of

4)

Mutilus albicans (2 of 4)

Stereo-Atlas of Ostracod Shells, 1:27:145-148 (1973) Sleia troglodytophila (1 of 4)

595.336.11 (113.331) (424.7:162.003.52): 551.35 + 552.542

ON SLEIA TROGLODYTOPHILA MARTINSSON
by David J. Sivetet
(University of Leicester 3 England)

Sleia troglodytophila Martinsson, 1962

Beyrichia Kloedeni , M'Coy var. granulata, Jones; T. R. Jones & H. B. Holl, Ann. Mag. nat.
Hist., ser. 5, vol. 17, p. 350, pi. XII, fig. 2 (1886).

[ ? Beyrichia tuberculata , (Kloden) var. gibbosa, Reuter; T. R. Jones & H. B. Holl, Ann.
Mag. nat. Hist., ser. 5, vol. 17, p. 349, pi. XII, fig. lb, ( non la), (1886).]
Beyrichia granulata (Jones & Holl); R. S. Bassler & B. Kellett, Geol . Soc. America, special
papers, no. 1, p. 193 (part), (1934).

Sleia troglodytophila n. sp. A. Martinsson, Bull. geol. Inst. Univ. Uppsala, vol. XLI,
p. 220, figs. 98B , 104A-C (1962).

Holotype: A ? RV, no. EW11, Institute of Palaeontology, University of Uppsala,
Sweden.

Type locality; The Wren's Nest, Dudley, Worcestershire, England; marl within the
Wenlock Limestone. Approx, long. 2°05'W, lat. 52°30'N.

Explanation of Plate 1:27:146

Fig. 1, 2 RV, int. showing subcruminal morphology & hinge line. Figs. 2, 3, 2 RV : fig. 2,
ext. lat.; fig. 3, post.

Scale A (400 ym ; x54) , fig. 1; scale B (400 ym ; x52) , figs. 2, 3.

Stereo-Atlas of Ostracod Shells, 1:27:147 Sleia troglodytophila (3 of 4)

Figured specimens: Brit. Mus. (Nat. Hist.) Nos. 10 5805 ( 2 RV: Pi. 1:27:146, fig. 1),

10 5806 ( 2 RV: Pi. 1:27:146, figs. 2, 3), 10 5807 ( 2 LV: Pi. 1:27:148,
fig. 1) 10 5808 ( S' LV: Pi. 1:27:148, figs. 2-4). All specimens are
from the crest of the exposed ridge on the W side of the type locality;
Wenlock Limestone. Nat. Grid Ref.: SO 93569195. Coll, author, 1970.

Diagnosis: Sleia species with a very large calcarine tubercle in the female. The
velar edge on the crumina is divided into one shorter, straight,
anterior portion and one larger, posterior portion, the anterior half
of which is bent out from the posterior portion (after Martinsson 1962)

Remarks: The specimen figured by Jones & Holl 1886 (p. 350, pi. XII, fig,. 2) as
" Beyrichia Kloedeni var. granulata, Jones" (BM (NH) IN 52504) is here
considered conspecific with S * troglodytophila Martinsson, 1962. How-
ever there is little point in choosing this specimen (or any of the
other syntypes which would now be referred to many different species) as
the lectotype of "B. granulata Jones (in Jones & Holl) , 1886" as this
name is a junior primary homonym of Beyrichia granulata Hall, 1859.

There are at least five other British Sleia species (to be described) ;
S. troglodytophila is distinguishable, especially by its subcruminal
morphology (see "Diagnosis" above) . It is found in the Wenlock Limestone
of the W Midlands of England (e.g. Wren's Nest, Hurst Hill) and the
Welsh Borderlands (e.g. at Benthall Edge) .

Explanation of Plate 1:27:148

Fig. 1, 2 LV, hinge line. Figs. 2-4, <T LV : fig. 2, ext. vent, obi.; fig. 3, post.; fig. 4,

ext. lat.

Scale A (100 ym ; x80) , fig. 1; scale B (400 ym ; x52) , figs. 2-4.

Sleia troglodytophila (4 of 4)

Stereo-Atlas of Ostracod Shells, 1:27:146

Sleia troglodytophila (2 of 4)

Stereo-Atlas of Ostracod Shells, 1:27:148

Stereo-Atlas of Ostracod Shells, 1:28:149-152 (1973) Ilyocypris monstrifica (1 of 4)

595.337.12 (119.9) (425.42:162.002.52 + 569.4:161.035.32 + 478.9:161.028.47): 551.312

ON ILYOCYPRIS MONSTRIFICA (NORMAN)
by P. C. Sylvester-Bradley and E. K. Kempf
(University of Leicester , England , and University of Cologne, Germany)

Ilyocypris monstrifica (Norman, 1862)

Cypris monstrifica sp. nov. A. N. Norman, Ann. Mag. nat. Hist., ser. 3, vol. 9, p. 45,
pi. 3, figs. 4, 5 (1862).

Limnocythere monstrifica (Norman); G. S. Brady, Intellectual Observer, vol. 12, p. 121 (1867).
Ilyocypris gibba var. tuberculata Brady; K. Kertesz, Termeszetr. Fuz., vol. 16, pp. 114-121,
169-176, pi. 6 (1894) .

Ilyocyprois tuberculata Kertesz non Brady; L. Masi, Boll. Soc . zool . ital . , ser. 2, vol. 7,

!p. 261 (1906).

Ilyocypris ambigua sp. nov. A. G. Lowndes, Ann. Mag. nat. Hist., ser. 10, vol. 8, pp. 569-
571 (1931).

Ilyocypris hartmanni sp. nov. R. Lerner-Seggev, Israel J. Zool., vol. 17, pp. 123-128,
pis. D, E, figs. 15-29; pl.J, figs. 1-2; pi. K, fig. 7 (1968)

Ilyocypris monstrifica (Norman); K. G. McKenzie, Crustaceans, vol. 18, pp. 109, 110 (1970).

Ilyocypris monstrifica (Norman); A. L. Kovalenko, Akad. Nauk. Moldavia SSR , no. 4, 1972e,

pp. 65-67, fig. 1 (1972).

Explanation of Plate 1:28:150

Figs. 1-2, LV ext. lat. ; fig. 2 to show spines & setae & setal collars in normal pore
canals; fig. 3, RV ext. lat.

i Scale A (500 ym ; x88) , fig. 1 (specimen 725 ym long); scale B (50 ym ; x700) , fig. 2;

scale C (500 ym ; *87) , fig* 3 (specimen 775 ym long).

Stereo-Atlas of Ostracod Shells, 1:28:151 Ilyocypris monstrifica (3 of 4)

Lectotype:

Type locality:

Figured specimens:

Diagnosis:

Remarks:

(here designated) Brit. Mus. (Nat. Hist.) 1911.11.8M3402.

Canal, Fleckney, Leicestershire, England; Nat. Grid Ref.: SP 6593; long.
1°59'W, lat. 52°30'N. Shallow (maximum 3 m) , almost static, freshwater
(Sal. 0.2%n in 1973) , muddy bottom, weedy sides. Rec. Coll. August, 1856.
BM(NH) 1973. 306A (Pi. 1:28:150, figs. 1, 2); 1973.307 (Pi. 1:28:152, fig.
3), both coll, from type locality March, 1973 by P.C.S.B.; 1973.308
(Pi. 1:28:150, fig. 3) from Lake Tiberias, Israel, long. 35°E, lat. 32°N,
coll, by Lerner-Seggev from type locality of J. hartmanni ; 1972.2.1.10-11A
(Pi. 1:28:152, figs. 1, 2) from R. Dnestr, near Kishinev, Moldavia, USSR,
long. 28°50'E, lat. 47°0'N, coll. R. H. Bate (see Kovalenko 1972).

Finely reticulate, with two prominent conical processes tending to curve
towards post, on upper half of each valve, and two smaller conical
eminences below and between them. A further, lesser protuberance may
occur with varying strength between the more dorsal pair. Both ant. and
post, thirds decorated with about 40 spines, more or less cylindrical in
shape, very variable in length in different specimens, but always longer
and more prominent towards margins (Pi. 1:28:150, fig. 2).

Recent, widely distributed in freshwater lakes and rivers of Europe and
Asia; fossil, from Upper Pleistocene of Syria (see Kempf Z. Geomorph. ,
Supp. Bd. , 1973, in press). T. monstrifica is the senior subjective
synonym of the type-species of the nominal genus Ilyocyprois Masi, but
we believe this genus to be a synonym of Ilyocypris .

Explanation of Plate 1:28:152

Figs. 1-2, RV int. lat.; fig. 3, LV int. lat.

Scale A (500 ym ; *83), fig. 1 (specimen 750 ym long); scale B (100 ym ; *390) , fig. 2;
scale C (500 ym ; x79) # fig. 3 (specimen 800 ym long) .

Stereo-Atlas of Ostracod Shells, 1:29:153-160 (1973) Sylvestra posterobursa (1 of 8)

595.337.14 (118.213) (560:161.036.36): 551.351 + 552.513

ON SYLVESTRA POSTEROBURSA DORUK gen. et sp. nov..
by Neriman Doruk

(University of Leicester 3 England)

Genus SYLVESTRA gen. nov.

Type-species: Sylvestra posterobursa sp. nov.

Derivation of name: In honour of Prof. p. c. Sylvester-Bradlev .

Diagnosis: A genus of Leptocytherinae Hanai with a ventral "snap-knob" as in
Callistocy there , but differing from that genus in hinge and shape.

Hinge with median element of left valve reduced to two separated khobs,
one median and one anterior in position, underlying extension of
anterior element, which consists of a separate groove. Posterior element
a quadriloculate socket. Shape trapezoidal with prominent posteroventral
pouch.

Explanation of Plate 1:29:154

Fig. 1, ? RV, ext.; fig. 2, ? LV, ext.

Scale A (250 ym ; x144) , fig. 1; scale B (250 ym ; *138) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:29:155 Sylvestra posterobursa (3 of 8)

Sylvestra posterobursa sp. nov.

Brit. Mus. (Nat. Hist.) 10 5159, LV.

A road cutting about 2 km S of Com, Antakya (Turkey) . Approx, long.
36°15'E, lat. 36°02'N. Upper Miocene. Yellow sandstone with abundant
molluscan shell fragments and foraminifera. Presumed littoral.

Latin, "posterior pouch."

Brit. Mus. (Nat. Hist.) 10 5158 (RV: Pi. 1:29:154, fig. 1; Pi. 1:29
156, figs. 2, 3), 10 5159 (LV: PI. 1:29:154, fig. 2; Pi. 1:29:160,
fig. 1), 10 5160 (LV: Pi. 1:29:156, figs. 1, 4), 10 5166 (LV: Pi. 1:29:
158, figs. 1-3; Pi. 1:29:160, figs. 2-4). All the figured specimens are
from the type locality, 3 m from the base of the section.

Fossae in groups, 2 to about 8 in each group.

Sexual dimorphism: slight, males a little less high in the posterior.
Upper Miocene from several localities in Antakya region, Turkey.

Explanation of Plate 1:29:156

Fig. 1, ? LV, int.; fig. 2, ? RV, int.; fig. 3, snap-knob, RV; fig. 4, LV, int. muse. sc.

Scale A (250 ym ; x131) , fig. 1; scale B (250 ym ; *122) t fig. 2; scale C (50 ym ; *427) ,
fig. 3; scale D (100 ym ; *393) , fig. 4.

Holotype:
Type locality:

Derivation of name:
Figured specimens:

Diagnosis:
Remarks:
Distribution :

Sylvestra posterobursa (2 of 8)

Sylvestra posterobursa (4 of 8)

Stereo-Atlas of Ostracod Shells, 1:29:154

Stereo-Atlas of Ostracod Shells, 1:29:156

Stereo-Atlas of Ostracod Shells, 1:29:157 Sylvestra posterobursa (5 of 8)

Explanation of Plate 1:29:158

Fig. 1, ant. view of LV, ext.; fig. 2, obi. dors, view of LV; fig. 3, obi. vent, view of LV.
Scale A (100 ym ; xl89) , fig. 1; scale B (250 ym ; xl05) , figs. 2, 3.

Stereo-Atlas of Ostracod Shells, 1:29:159 Sylvestra posterobursa (7 of 8)

Explanation of Plate 1:29:160

Fig. 1, LV, ext. detail of surface; fig. 2, obi. ant. view of LV; fig. 3, obi. post, view
of LV; fig. 4, post, view of LV.

Scale A (20 ym ; ><945) , fig. 1; scale B (100 ym ; *136) , figs. 2, 3; scale C (100 ym ;
x210) , fig. 4.

Stereo-Atlas of Ostracod Shells, 1:29:160

Sylvestra posterobursa (8 of 8) :

Stereo-Atlas of Ostracod Shells, 1:29:158

Sylvestra posterobursa (6 of 8)

STEREO-ATLAS OF OSTRACOD SHELLS
Contents, Volume 1, Part 2

1:16:89-92 On Ckrysoey there paradisus', by N. Doruk (£0.30)
1:17:93-96 On Proeythereis torquata; by R. H. Benson (£0.30)
1:18:97-100 On Proeythereis iganderssoni; by R. H. Benson (£0.30)
1:19:101-108 On Pattersoneypris mieropccpillosa ; by R. H. Bate (£0.60)
1:20:109-116 On Mutilus retiformis ; by G. Ruggieri & P. C. Sylvester-Bradley (£0.60)
1:21:117-120 On Mutilus keigi\ by N. Doruk (£0.30)
1:22:121-124 On Mutilus eimbaeformis; by N. Doruk (£0.30)
1:23:125-128 On Mutilus freudenthali ; by N. Doruk (£0.30)
1:24:129-136 On Mutilus eonveccus ; by N. Doruk (£0.60)
1:25:137-140 On Mutilus speyeri ; by N. Doruk (£0.30)
1:26:141-144 On Mutilus albicans', by N. Doruk (£0.30)
1:27:145-148 On Sleia troglodytophila’, by David J. Siveter (£0.30)
1:28:149-152 On Ilyocypris monstrifica; by P.C. Sylvester-Bradley & E.K.Kempf (£0.30)
1:29:153-160 On Sylvestra posterobursa; by N. Doruk (£0.60)

Annual subscription to Vol. 1, 4 parts (1973) £7.50; Vol. 2 (1974) £10.00.

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