A Stereo -Atlas of Ostracod Shells

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

and David J. Siveter

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.

Dr Lesley M. Sheppard, SSI (U.K.) Limited, Tannery Hse., Tannery Lane, Send, Woking, Surrey.

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

Editorial Board

Dr G. Bonaduce, Stazione Zoologica, 80121 Napoli, Italy.

Dr J.-P. Colin, Esso Production Research - European, 213 Cours Victor Hugo, 33321 Begles,

France.

Dr P. De Deckker, Research School of Pacific Studies, Australian National University, PO Box 4,

Canberra ACT 2600, Australia.

Dr D. van Harten, Universiteit van Amsterdam, Geologisch Instituut, Nieuwe Prinsengracht 130,

Amsterdam, The Netherlands.

Dr I. Purper, Departamento de Paleontologia e Estratigrafia, UFRGS, 90 000 Porto Alegre RS, Brazil.

Dr R.E.L. Schallreuter, Universitat Hamburg, Geologisch-Palaontologisches Institut, Bundesstrasse 55,

D 2000 Hamburg 13, West Germany.

Officers of the British Micropalaeontological Society

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

SW7 5BD.

Secretary Dr A.R. Lord, Department of Geology, University College London, Gower Street,

London WC1.

Assistant Secretary Dr P.P.E. Weaver, Institute of Oceanographic Sciences, Wormley, Godaiming,

Surrey, GU8 5UB.

Treasurer Dr J.E. Whittaker, Department of Palaeontology, British Museum (Natural History),

Cromwell Road, London SW7 5BD.

Editor Dr. L.M. Sheppard, SSI (U.K.) Limited, Tannery Hse., Tannery Lane, Send, Woking, Surrey.

Circular Editor Dr E.G. Spinner, Department of Geology, The University, Mappin Street, Sheffield SI.

Conodont Group:

Chairman Dr R.L. Austin, Department of Geology, The University, Southampton.

Secretary Dr A.C. Higgins, Department of Geology, The University, Sheffield SI.

Foraminifera Group:

Chairman Prof. M.B. Hart, Department of Geology, Plymouth Polytechnic, Drake Circus, Plymouth

PL4 8AA.

Secretary Dr M.D. Fewtrell, Erico Research Laboratories Ltd., Lane House, 233-235 Roehampton

Lane, London SW15 4LB.

Microplankton Group:

Chairman Dr J.P.G. Fenton, Robertson Research International Ltd., Ty’n-y-Coed, Llanrhos, Llandudno,

Gwynnedd LL30 ISA.

Secretary Dr S. Molyneux, Institute of Geological Sciences, Ring Road, Halton, Leeds.

Ostracod Group:

Chairman Dr R.C. Whatley, Department of Geology, University College of Wales, Aberystwyth,

Dyfed SY23 3DB.

Secretary Dr. D.J. Horne, Department of Geology, City of London Polytechnic, Walburgh House,

Bigland Street, London E.l.

Palynology Group:

Chairman Mr M.J. Fisher, British National Oil Corporation, 150 St. Vincent Street, Glasgow G2 5LJ.

Secretary Dr D.J. Smith, BP Research Centre, Chertsey Road, Sunbury-on-Thames, Middlesex.

Instructions to Authors

Contributions illustrated by scanning electron micrographs of Ostracoda in stereo-pairs are invited.

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 any one of the

Editors or Editorial Board. Completed papers should be sent to Dr David J. Siveter.

The front cover shows a male right valve and soft parts, internal view, of

Caboncypris nunkeri De Deckker, 1982

Printed by United Printing Services, Blackpool, England.

I 1

.4-4

I I I

-11J.

Stereo-Atlas of Ostracod Shells 10 (1) 1-4 (1983)

595.336.13 (113.312) (429 : 162.005.51) : 551.35 + 552.55

T allinnellina dissita (1 of 4)

ON TALLINNELL1NA DISSITA SCHALLREUTER & SIVETER sp. nov.

by R. E. L. Schallreuter and David J. Siveter

(University of Hamburg, West Germany and University of Leicester, England)

Tallinnellina dissita sp. nov

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Brit. Mus. (Nat. Hist.) no. OS 6698, 9 RV.

[Paratypes: Brit. Mus. (Nat. Hist.) nos. OS 6699, 6670, 6692, 6693, 6852. Geologisch-

Palaontologisches Institut, University of Hamburg, nos. 2344, 2325].

Old quarry about 300 m south of Cum Agol Farm, near Llandeilo, Dyfed, Wales; approx, lat.

51° 51 ' N, long. 4° 05' W (Nat. Grid Ref.: SN 56552070). Llandeilo ‘Flags’, Llandeilo Series, middle

Ordovician.

Latin dissitus, distant, alluding to its geographical and stratigraphical position in comparison with

congeneric species.

Brit. Mus. (Nat. Hist.) nos. OS 6698 (holotype, 9 RV : PI. 10, 2, figs. 1-4), OS 6699 (c 1 LV : PI. 10, 2,

fig. 5), OS 6692 (c/RV: PI. 10, 4, figs. 1, 2, 4), OS 6700(tecnomorphic RV: PI. 10, 4, fig. 3), OS 6693

(9 RV: PI. 10, 4, fig. 5).

All the figured specimens are from the type locality and horizon.

Explanation of Plate 10, 2

Figs. 1-4, 9 RV (holotype, OS 6698, 1400 p.m long): fig. 1, ext. ant.; fig. 2, ext. lat.; fig. 3, ext. vent, obi.; fig. 4, ext. vent. Fig. 5,cfLV, ext.

lat. (OS 6699, 1400 /xm long).

Scale A (250/um; x 40), figs. 1-4; scale B (250/xm; x 40), fig. 5.

-t-r-i

+++

444

+ E4

Stereo- Atlas of Ostracod Shells 10, 3 Tallinnellina dissita (3 of 4)

Diagnosis: Species of Tallinnellina with lobes virtually straight and perpendicular to the dorsal border; LI, L3

and L4 reach dorsal border, where they are more or less weakly expanded; L4 broader than L3. L1-L3

and sometimes posteroventral margin of L4 show tendancy to become cristate; L1-L2 cristae form

V-shape. Connecting lobe bow-shaped, slightly depressed below S2. Velar flange terminates mid-

posterally, dimorphic: anteriorly and centroventrally wider and more distant from the free margin in

the female, forming a simple antrum.

Remarks: The new species shows closest morphological similarity and phylogenetic affinity to Tallinnellina

rara Sarv (Eesti NSV Tead. Akad. Geol. Inst, uurimused 4, 1959) from the upper Lower Ordovician

(middle Kunda Stage, B 3/J) of Estonia. In general, in both species the lobes are more vertical than in

congeneric taxa. Compared to T. dissita, in T. rara LI and L2 are weakly curved and weakly oblique

to the dorsal border, its lobes lack cristae, and the connecting lobe is straighter, more parallel to the

dorsal border and forms a rounded right angle with L4. Furthermore, in T. dissita the connecting

lobe is depressed below S2 and the velar flange does not extend to the dorsal border but ends abruptly

mid-posterally. The abrupt mid-posterior termination of the velar flange is characteristic of

Tallinnella Opik, 1937 as defined by Jaanusson (Bull. geol. Instn. Univ. Uppsala, 37, 344, 1957).

The difference between Tallinnella and Tallinnellina Jaanusson, 1957 is, however, unclear and

requires first-hand investigation of the respective type-species.

T. dissita is the youngest known species of the genus and its first representative from the

middle Ordovician and from outside Baltoscandia. In addition to species illustrated by Siveter (The

Ordovician, In: Bate, R. H. & Robinson (Eds.), A Stratigraphical Index of British Ostracoda, Geol.

Jl., 8, 41-56), T. dissita is another link between British and Baltoscandian ostracod faunas in the

middle Ordovician.

Adult valves are 1.25 - 1.52 mm long.

Distribution: So far known only from the area of the type locality, Wales.

Explanation of Plate 10, 4

Figs. 1, 2,tfRV (OS 6692; 1450/xm long): fig. 1, ext. ant.; fig. 2, ext. lat.; fig. 3, tecnomorphic RV, ext. lat. (OS 6700; 1 175/xm long);

fig. 4,d'RV, ext. vent. (OS 6692); fig. 5,9RV, ext. lat. (OS 6693; 1375 /xm long).

Scale A (250/xm; x 38), figs. 1, 2, 4; scale B (200 /xm; x40), fig. 3; scale C (250/xm; x 40), fig. 5.

4L.

I I

J-i-

t- + T-

Stereo- Atlas of Ostracod Shells 10, 2

Tallinnellina dissita (2 of 4)

i-rt--

i-t-t--

LLL.

Stereo- Atlas of Ostracod Shells 10, 4

-14

Tallinnellina dissita (4 ot 4)

r

i-

r

H tr-

M tT — |

II Mi

-4 — L-

I I I

41J

T-l-f

Stereo-Atlas of Ostracod Shells 10 (2) 5-12 (1983)

595.336.13 (113.312) (420 : 162.003.52) : 551.351 + 552.52

Harperopsis scripta (1 of 8)

ON HARPEROPSIS SCRIPTA (HARPER)

by C. R. Jones & David J. Siveter

(University of Leicester, England)

Genus HARPEROPSIS Pribyl, 1966

Type-species (by original designation): Tetradella scripta Harper, 1947

Diagnosis: Large, amplete, quadrilobate tetradellid; having short anteroventral connecting ridge (relict histium)

between connecting lobe and velum. L2 short, connects near base of LI; LI, L3, L4 strongly

developed, ridge like, nearly vertical, projecting above dorsum; L3 with dorsal bifurcation, giving

smaller cusp nearer dorsum. Velum as well developed (-inflated) ridge, terminates abruptly mid-

posteriorly. Infravelar, anterior-anteroventral antrum; dolon smooth, extends to anterior cardinal

corner. Row of spines forming marginal sculpture.

Remarks: Harperopsis differs from other genera by its unique connecting ridge between its velum and the

connecting lobe. Its prominent, vertical lobes (LI, L3 L4) are also distinctive. The overall mor-

phology of the type-species Harperopsis scripta is reminiscent of the ctenonotellid Tallinnella

dimorpha Opik ( Publ . Geol. Inst. Univ. Tartu, 50, 1937), type-species of the older Tallinnella Opik,

1937. Both H. scripta and T. dimorpha have a thick velar ridge terminating mid-posteriorly, and

anteroventral antra in hetoromorphs. T. dimorpha differs by the bulbous dorsal terminations of L 1,

L3, L4, the swollen, granulose base of L 1 , and by the absence of any histial structure comparable to

Explanation of Plate 10, 6

Figs. 1-6,9LV (unnumbered specimen, on same slab as holotype, 2820 p.m long): fig. 1, ext. lat. ; fig. 2, ext. ant. ; fig. 3, obi. vent. ; fig. 4,

vent.; fig. 5, obi. dors.; fig. 6, dors.

Scale A (500 pm; x20), figs. 1-6.

-t-r — i

-M-H

44 4

n-

Stereo- Atlas of Ostracod Shells 10, 7

Harperopsis scripta (3 of 8)

Remarks (cont.): the ventral connecting ridge oiH. scripta. Such a structure (interpreted as a ventral strengthening

strut) could have developed by an accretionary process, involving the velum and connecting lobe;

in this case a Tallinnella- like ancestor could thus be postulated. However, we beli Harperopsis is

derived from older tetradellid stock (found in the Llandeilo Series of South Wales and basal Caradoc

Series of the Shelve district, Shropshire), which has a histial ridge connected anteroventrally to the

velum. Thus, more likely, a reduction of this condition would give rise to the ventral connecting ridge

(a relict histial structure) of Harperopsis.

Pribyl ( Cas . narod. Mus., 135 (4), 201-2, 1966) designated T. scripta type-species of his new

subgenus Cerninella (Harperopsis) . However, Pfibyl’s generic diagnosis excludes//, scripta as now

known. Beyrichia bohemica Barrande (Systeme Silurien due centre de la Boheme , 1, suppl., pi. 26,

fig. 13, pi. 34, figs. 19, 20, 1872), type-species of Cerninella , differs from H. scripta by the lack of a

histial structure, its slender LI, L2, L3, and its dorsally reduced L4. Following Siveter (Geol. J.

Spec. Issue, 8, 52, 1978), we regard Harperopsis as a distinct genus.

We differ with Pribyl’s (204, 1966) generic assignment of T. bicuneformis Harper (op. cit.

348-49, pi. 10, figs. 4, 10, text-fig. lb) to within C. (Harperopsis) . This species differs from

Harperopsis in having a more well defined relict histial ridge, more inclined L3 and L4, and an

isolated V-shaped L1-L2. Although T. bicuneformis is closely related to Harperopsis (cf. Siveter,

50, 1978), we consider that the species is best assigned to a new tetradellid genus (C. Jones, in prep).

Additional forms referred to Harperopsis include Beyrichia decorata Jones (Ann. Mag. nat.

Hist. (2), 16, 165, pi. 6, fig. 6, 1855) and an additional, undescribed British species.

Distribution: Harperopsis is known from the Caradoc Series, middle Ordovician, of Wales and Northern England.

Explanation of Plate 10, 8

Figs. 1-6, dLV (holotype, GSM 74875A, 2800 ^m long): fig. 1, ext. lat.; fig. 2, ext. ant.; fig. 3, obi. vent.; fig. 4, vent.; fig. 5, obi. dors.;

fig. 6, dors.

Scale A (500 /xm; x 20), figs. 1-6.

-M— t

4L.

i l I

Stereo- Atlas of Ostracod Shells 10, 6

Harperopsis scrip ta (2 ot 8)

L. j_ L

44

H

-■ I— H--

Stereo- Atlas of Ostracod Shells 10, 8

Harperopsis scripta (4 of 8)

HI

nr-

'i r

I I I

IlJ

I

4

I

L

Stereo- Atlas of Ostracod Shells 10, 9

Harperopsis scripta (Harper, 1947)

r-t-t

Harperopsis scripta (5 of 8)

1855 Beyrichia complicata, Salter; T. R. Jones, op. cit., 164 (pars), pi. 6, fig. 5 ( = juvenile on GSM 49449).

1947 Tetradella scripta sp. nov.; J. C. Harper, Geol. Mag., 84, 347, 348 (pars), pi. 10, figs. 1, 2, 8, text-fig. la.

1948 Tetradella scripta Harper; I. Strachan, J. Temple & A. Williams, Geol. Mag., 85, 276, 277.

1953 Tallinnella scripta (Harper, 1947); G. Henningsmoen, Norsk, geol. Tidsskr., 31, 214.

1964 Tallinnella scripta (Harper); Brit. Mus. Nat. Hist., British Palaeozoic Fossils, pi. 12, fig. 11, London.

1966 Cerninella (Harperopsis) scripta. Harper, 1947; A. Pribyl, op. cit., 201, 202.

1978 Harperopsis scripta (Harper, 1947); D. J. Siveter, op. cit., 52, pi. 3, figs. 7, 8.

Holotype: Institute of Geological Sciences Museum, London, no GSM 74875A; cfLV, external mould.

Type locality: 150 m E of Cwms Cottage, 0.5 km SE of Caer Caradoc Hill, Church Stretton, Shropshire (Grid

Ref. SO 4816 9493); approx, lat. 52° 32' N, long. 2° 46' W. Harnage Shales, Harnagian, Caradoc

Series, middle Ordovician.

Figured specimens: Institute of Geological Sciences, nos. GSM 74875A (holotype, d'LV: PI. 10, 8, figs. 1-6; PI. 10, 12,

figs. 1-4); unnumbered specimen on same slab as holotype (9LV; PI. 10, 6, figs. 1-6; PI. 10, 10, figs.

1-3). Both from the type locality and horizon.

The figured specimens (Siveter,1978, pi. 3, figs. 7, 8) are ‘Silcoset’ silicone rubber casts of

external moulds.

Explanation of Plate 10, 10

Figs. 1-3, ?LV (unnumbered specimen, on same slab as holotype): ornament (granules with pores) at base of S3.

Scale A (250 pm ; x 64), fig. 1 ; scale B (125 pun; x 120), fig. 2; scale C (25 punt x 424), fig. 3.

i i

i i

r|

ri

-t-r-i

-M--H

-\

XU

44 4

-

-H-4 —

Stereo-Atlas of Ostracod Shells 10, 11

Harperopsis scripta (7 of 8)

Diagnosis:

Remarks:

Distribution:

Large Harperopsis having diminutive L2. Dolon, velar ridge, lobal crests and all but ventral-most

parts of sulci smooth; granulose elsewhere. Left valve with almost entire inner semi-groove;

complementary marginal flange on right valve.

Harper (347, 348, 1947) placed H. scripta in Tetradella on the basis of its lobation, but did not

recognise its dimorphism. None of the six species he assigned to Tetradella would now belong within

the genus.

Intraspecific variation in H. scripta consists of flattened to semi-cristate L2, and ridge-like to

swollen base of L4. Juveniles have fimbriate L3, and more cristate-like lobation.

H. decorata differs from H. scripta by its inflated velum, reduced lobation but with LI, L3,

L4 bulbous dorsally, and the obsoletion of lobal bifurcation to L3.

The Harnage Shales, Harnagian, Caradoc Series, Shropshire, England. Dean (Bull. Brit. Mus. Nat.

Hist. (Geol.), 3 (6), 218-220, 1958) also records//, scripta from the Costonian, Harnagian and

Soudleyan of the Caradoc Series of Shropshire, but those occurrences have not yet been confirmed.

H. scripta is one of the most commonly quoted ostracodes in British Ordovician faunal lists,

but undoubtedly most of these records should be treated with caution as most probably they refer to

other forms of quadrilobate palaeocopes.

Explanation of Plate 10, 12

Figs. l-4,dLV (holotype, GSM 74875 A): ornament (granules with pores) at base of S2 (figs. 1, 2) and ventral supra-velar region (figs. 3,4).

Scale A (250 pun ; x 64), fig. 1 ; scale B (50 pun ; x 200), fig. 2 ; scale C (250 pun ; x 64), fig. 3 ; scale D (32 pun ; x 3 10), fig. 4.

tt

TP

—I— I

-|-t

XU

I I

1

I I I

Lll.

I

1 l"T~

Stereo- Atlas of Ostracod Shells 10, 10

Harperopsis scripta (6 of 8)

hth-

M- '

— J_ 1 —

I

+- + +

Stereo-Atlas of Ostracod Shells 10, 12

1

Harperopsis scripta (8 of 8)

H| IT

H! IT

I

j : i-L

i

i-

r

r

T

■I—

I

I

4

4

I I I

T + +

Stereo-Atlas of Ostracod Shells 10 (3) 13-16 (1983) Vittella fecunda (1 of 4)

595.336.13 (113.312) (429 : 162.005.51) : 551.35 + 552.55

ON VITTELLA FECUNDA SIVETER sp. nov.

by David J. Siveter

( University of Leicester, England)

Vittella fecunda sp. nov.

1963 Lomatobolbina sp.; N. Spjeldnaes, Palaeontology , 6, 258, pi. 36, fig. 8.

1978 Lomatobolbina sp. nov. 1; D. J. Siveter, The Ordovician, In: Bate, R. H. & Robinson, E. (Eds.), A Stratigraphical Index of

British Ostracoda, Geol. JL, special issue 8, 48, pi. 1, figs. 11, 12.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Brit. Mus. (Nat. Hist.) no. OS 7777,9 LV.

Old quarry about 300m south of Cwm Agol Farm, near Llandeilo, Dyfed, Wales; approx, lat.

51° 51' N, long. 4° 05' W (Nat. Grid Ref. SN 56552070). Llandeilo ‘Flags’, Llandeilo Series, middle

Ordovician.

Latin fecundus, fertile; alluding to the well developed dolon (‘brood pouch’) in the females.

Brit. Mus. (Nat. Hist.) nos. OS 7777 (holotype,? LV: PI. 10, 14, fig. 1), OS 7778(tfRV: PI. 10, 14,

figs. 2, 3; PI. 10, 16, fig. 5), OS 7779 (9LV: PI. 10, 14, fig. 4), OS 7782 (tecnomorph RV: PI. 10, 16,

figs. 1-3), OS 6672 (9 LV: PI. 10, 16, fig. 4), OS 7781 (PI. 10, 16, fig. 6).

All the figured specimens are from the type locality and horizon.

All material occurs as silicified valves.

Explanation of Plate 10, 14

Fig. 1,9LV, ext. lat. (holotype, OS 7777, 1450/um long); fig. 2,cfRV, ext. lat. (OS 7778, 1350/am long); fig. 3,d'RV, ext. post. (OS7778);

fig. 4,9LV, ext. lat. (OS 7779, 1330/u.m long).

Scale A (250/zm; x 38), fig. 1; scale B (250/xm; x40), figs. 2-4.

rr

rr

++-1--

• + + -i —

444

7_l~

+ + +

Stereo- Atlas of Ostracod Shells 10, 15

Vittella fecunda (3 of 4)

Diagnosis: Species of Vittella with supra-velar furrow well developed throughout, and a weak perimarginal

ridge occurring (at least in females) between dolonal edge and valve margin along most of the

antrum. S2 narrow, sigmoidal, narrowing and weaker ventrally; above, a faint elevation near

dorsum. L2 node like; L3 broad with variously developed ventral node (-spine). Velum frill-like,

widest anteriorly and ventrally, gradually reduced to posterior mid-height; extended into wide,

convex anterior-ventral dolon.

Remarks: Siveter (op. cit.) temporarily assigned this species to Lomatobolbina Jaanusson, 1957. The faint

antral ridge is here confirmed (in many though not all females) and re-interpreted as a weak peri-

marginal ridge and the main adventral structure is reinterpreted as a velum, not a histium. Vittella is

a glossomorphitine, tetradellids in which the histium can be obsolete. V. fecunda differs from the

middle Ordovician Baltoscandian type-species, V. vittensis Schallreuter ( Ber . geol. Ges. DDR, 2,

1964), and from the Siberian V. rogeri (Ivanova & Melnikova) ( Palaont . z, 11, 1977) by having a

perimarginal ridge and by its wider dolon in lateral view. The middle Ordovician V. rogeri (op. cit.,

87, text-fig. 2) appears to be closely similar to V. fecunda but differs further by its apparently thicker

adventral structure and in having its S2 slightly wider ventrally. Even amongst material etched from

a single block of limestone V. fecunda displays wide infraspecific variation, particularly in the size of

adults (99: c. 1050-1450/xm) and in the development of the L3 node, which in extreme cases is

either spine-like or absent.

Vittella is one of the many ostracode genera (e.g .Homeokiesowia, Tallinnellina, Cryptophyllus)

now known to be common to both southern Britain and the Baltic area in the middle Ordovician

(e.g. see Siveter, 1978; Stereo-Atlas of Ostracod Shells, 9, 89, 1983; Schallreuter & Siveter Ibid., 9,

85, 1983).

Distribution: Known only from the area of the type locality. South Wales.

Explanation of Plate 10, 16

Figs. 1-3 tecnomorphis RV (OS 7782, 875/xm long); fig. 1, ext. lat.; fig. 2, obi. vent.; fig. 3, ext. ant.; fig. 4,9 LV, ext. lat. (OS 6672,

1270/xm long); fig. 5,cfRV, ext. vent. (OS 7778); fig. 6,?RV, int. vent. obi. (OS 7781, 1280/u.m long).

Scale A (250/u.m; x 50), figs. 1-3; scale B (250/um; x 40), figs. 4, 6; scale C (250/um; x 40), fig. 5.

t r

rr

XL

Stereo-Atlas of Ostracod Shells 10, 14

i-ri-

h + t-

Vittella fecunda (2 of 4)

i

4-

T

L. J_L

-14

h-

+~l~

Stereo-Atlas of Ostracod Shells 10, 16

Vittella fecunda (4 of 4)

IT

“IT

I I I

11J_.

J-U

Stereo-Atlas of Ostracod Shells 10, (4) 17-20 (1983)

595.337.14 (116.331) (44 : 162.001.44 + 469 : 162.009.38) : 551.351

Sarlatina merlensis (1 of 4)

ON SARLATINA MERLENSIS BABINOT & COLIN

by J. P. Colin

(Esso Production Research-European Lab., Begles, France)

Genus SARLATINA Babinot & Colin, 1976

Type-species (by original designation): Sarlatina merlensis Babinot & Colin, 1976

Diagnosis:

Remarks:

Carapace ovoid, more or less elongate, smooth with rather numerous sieve-pores. Weak, subvertical

post-ocular sulcus present. Left valve larger than right; hinge antimerodont. Small anterior

vestibulum present. Strong sexual dimorphism, with males more elongate and females slightly

swollen posteriorly. About 60 marginal pore canals., straight or sinuous.

The monotypic genus Sarlatina is thought to be a descendant of the Jurassic to Early Cretaceous

genus Fabanella Martin and the ancestor of the Cenozoic to Recent genus Cyprideis Jones. Its

occurrence generally in mono- to oligospecific associations suggests its preference for brackish

environments.

Explanation of Plate 10. 18

Fig. l,9car., ext. rt. lat. (8215-16, 920^un long); fig. 2,9LV, ext. lat. (8217-18, 940/um long); fig. J.d'LV, int. lat. (8221-22. 930yum

long).

Scale A (250/u.m: x 58), figs. 1-3.

+ + +

+-t —

-U.-I

-M-

+ + + —

Stereo- Atlas of Ostracod Shells 10, 19

Sarlatina merlensis (3 of 4)

Sarlatina merlensis Babinot & Colin, 1976

1963

1976

Fabanella ? sp. H. J. Oertli, Mesozoic Ostracod Faunas of France, Edit. E. J. Brill, pi. 78, 2e; pi. 89, 1-2, Leiden.

Sarlatina merlensis n. sp.; J. F. Babinot & J. P. Colin, Abh. Verb, naturwiss, Ver. Hamburg (NF), 18/19 (Suppl.), 164-168,

pi. 2, figs. 8-17, pi. 3, figs. 1-12.

Holotype: Unnumbered specimen, deposited in the collections of the Laboratoire de Micropaleontologie,

Universite Pierre et Marie Curie, Paris; d'carapace.

Type-locality: Borehole of Merle, village of Berbiguieres, near St. Cyprien, Dordogne, SW France; approx, lat.

44° 50' N, long 1° 03' W. Cenomanian, Cretaceous.

Figured specimens: EPR-E 8215-16 (9car.: PI. 10, 18, fig. 1), 8217-18 (9LV: PI. 10, 18, fig. 2), 8221-22 (c^LV: PI. 10,

18, fig. 3), 8227-28 (d'car.: PI. 10, 20, fig. 1), 8225-26(cf RV: PI. 10, 20, fig. 2). 8260(tfcar.: PI. 10,

20, fig. 3). i.

All the specimens are from the Middle Cenomanian marginal- marine sediments of Cacem,

NW of Lisbon, Portugal, approx, lat. 38° 47' N, long. 9° 13' W; coll, by Dr P. Y. Berthou (Mem.

Serv. geol. Portugal , no. 23, 1973).

Diagnosis: As for the genus.

Distribution: Cenomanian of SW France, Spain, Portugal and North Africa.

Explanation of Plate 10, 20

Fig. 1, d'car., ext. rt. lat. (8227-28, 1122 /zm long); fig. 2, cfRV, int. lat. (8225-26, 940 /im long); fig. 3, d'car., ext. dors. (8620, 957 ^im

long).

Scale A (250yu.ni; x 49), fig. 1 ; scale B (250yu,m; x 58), figs. 2, 3.

i i

-1-1-

l i

— I — LI —

I ' I

Lll.

I !

I

I

I

Stereo- Atlas of Ostracod Shells 10, 18

Sarlatina merlensis (2 of 4)

t-ri-

LLL

-14

H

+- + -

Stereo-Atlas of Ostracod Shells 10, 20

Sarlatina merlensis (4 of 4)

4 1 — 1_

4T_r

I I I

I I I

1 1 I

4 -I — | —

I I I

-4-U

r-t-i

Stereo-Atlas of Ostracod Shells 10 (5) 21-24 (1983)

595.336.12 (113.313) (430.1 : 161.006.52 + 492.71

161.008.54) : 551.35 + 552.55

Reginea reginae (1 of 4)

ON REGINEA REGINAE SCHALLREUTER gen. et sp. nov.

by Roger E. L. Schallreuter

(University of Hamburg, German Federal Republic)

Derivation of name:

Diagnosis:

Remarks:

Genus REGINEA gen. nov.

Type-species: Reginea reginae sp. nov.

In honour of Regine Heidenreich, Planegg near Munich, German Federal Republic.

Very small (less than 0.5 mm) binodicope, more or less amplete, with three nodes. One node in

front of S 2 at the dorsal border, one node in the anteroventral region and one node in the center of

the postadductorial area. Border between lateral and marginal surface forms a ridge- like pseudo-

velum reducing in width in dorsal direction anteriorly and posteriorly. Lateral surface, including

nodes, coarsely reticulate.

Reginea is very similar to Klimphores Schallreuter, 1 966 ( Stereo-Atlas of Ostracod Shells, 7 (1), 1980)

and related genera, especially Laterophores Schallreuter, 1968 (Ber. deutsch. Ges. geol. Wiss. A 13,

2), Vaivanovia Schallreuter, 1966 (Ibid. 11, 3), Bullae ferum Qvale, 1980 (Norsk geol. Tidsskr., 60,

2) and Warthinia Spivey, 1939 (J. Paleont., 13, 2). The new genus is distinguished particularly by the

central position of its posterior node.)

Explanation of Plate 10, 22

Fig. 1, RV, ext. lat. (holotype, GPIMH 2712, 373 /am long); fig. 2, LV, ext. lat. (paratype, GPIMH 2713, 366 /am long).

Scale A (100 /am; x 260), figs. 1, 2.

■fi

_r|

-t-t-i

-t-t-H

J4J—

-M-

E-f

Stereo -Atlas of Ostracod Shells 10, 23

Reginea reginae (3 of 4)

Reginea reginae sp. nov.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Diagnosis:

Distribution:

Geologisch-Palaontologisches Institut und Museum, University of Hamburg, no. 2712, RV.

[Paratypes: nos. 2713-2715].

Upper Harjuan (Upper Ordovician) Ojlemyrflint erratic boulder no. SylOO of the Upper Kaolinsand

(Lower Pleistocene) near Braderup, Isle of Sylt (N Frisian Is., N Sea), Germany; lat. 54° 56' N, long.

8° 21' E.

As for the genus.

Geologisch-Palaontologisches Institut und Museum, University of Hamburg (GPIMH) nos. 2712

(holotype RV: PI. 10, 22, fig. 1), 2713 (LV: PI. 10, 22, fig. 2), 2716 (juv. RV: PI. 10, 24, fig. 1) and

2714 (juv. LV: PI. 10, 24, fig. 2). Nos. 2712-2714 are from the type locality; boulder coll, by Ulrich

von Hacht, Hamburg, in 1980. No. 2716 is from the Ojlemyrflint erratic boulder no. Wie 1 from

Wielen near Uelsen, West Germany; lat. 52° 32.5' N, long. 6° 44' E; coll, by F. Rhebergen,

Schoonebeek, Netherlands, in 1982.

As for the genus.

Known from Upper Harjuan (Upper Ordovician) Ojlemyrflint erratic boulders of Schleswig-

Holstein (Isle of Sylt) and Niedersachsen (Wielen).

Explanation of Plate 10, 24

Fig. 1, juv. RV, ext. lat. (GPIMH 2716, 250 /urn long); fig. 2, juv. LV, ext. lat. (paratype, GPIMH 2714, 268 gm long).

Scale A (50 /urn ; x 380), fig. 1 ; scale B (50 /urn ; x 330), fig. 2.

‘TP

"TP

,1L.

I I

- 1 — J— t —

•t — I- -f —

Stereo -Atlas of Ostracod Shells 10, 24

n-

i i

i i

i i

14

I I

I I

I I

f I

rr

Reginea reginae (4 of 4)

i l

H-

i -r

r

IT

-IT

J-

r

r

i

I—

4-L

-T-l-

i 1 i

iU

"I I t

Stereo-Atlas of Ostracod Shells 10 (6) 25-28 (1983) Bromidella sarvi (1 of 4)

595.336.13 (113.312) (489:161.012.54) : 551.35 + 552.55

ON BROMIDELLA SARVI SCHALLREUTER

by Roger E. L. Schallreuter

(University of Hamburg, German Federal Republic)

Bromidella sarvi Schallreuter, 1964

1964 Bromidella sarvi sp. n. R. E. L. Schallreuter, Ber. geol. Ges. DDR, 9, (3), 389, 390, 430, pi. 13 (431), fig. 2.

1973 Bromidella sarvi Schallreuter; R. E. L. Schallreuter, Palaeontographica, (A), 144 (1/3), 79,86-88, text-fig. 18, pi. 20, figs. 1-6,

tab. 10. (q.v. for further synonymy).

Holotype: Department of Geological Sciences, University of Greifswald, Greifswald, G.D.R., no. 4/2 (= no.

OS 163), 9 RV.

Type locality: Beach at Dornbusch, Isle of Hiddensee (Baltic Sea); lat. 54° 36' N, long. 13° 7' E. Backsteinkalk

erratic boulder (IB 2 Type, no 1B2), middle Ordovician (equivalent of the upper Dalby Formation

of Central Sweden).

Explanation of Plate 10, 26

Fig. 1,9 RV, ext. lat. (GPIMH 2708, 2.12mm long excluding spines); fig. 2,$ RV, int. lat. (GPIMH 2709, 2.12mm long excluding

spines).

Scale A (250 gm; x 42), figs. 1, 2.

t-r-i

M-H

_i_L —I

T

+ + 4

Stereo-Atlas of Ostracod Shells 10, 27

Bromidella sarvi (3 of 4)

Figured specimens:

Diagnosis:

Remarks:

Distribution:

Geologisch-Palaontologisches Institut und Museum (GPIMH) nos. 2708 ( 9 RV : PI. 10, 26, fig. 1),

2709(9 RV: PI. 10, 26, fig. 2). 2710(latejuv.LV: PI. 10, 28, fig. 1) and 2711 (young juv. LV: PI. 10,

28, fig. 2). All from the Backsteinkalk (1B14 Type) erratic boulder no. Mpn 2 from the beach at

Liselund, Isle of Mpn (Baltic Sea), Denmark; lat. 55° 0.5' N, long. 12° 32' E; coll, by the author in

1978.

Species of Bromidella with distinct laterovelar furrow. Tecnomorphs with a flange: ventrally and

posteriorly this is more or less (depending on the instar stage) dissolved into spines. Dolon from

anterocentral to centroventral region. Lateral surface of domicilium and of dolon more or less

spinose; spines short and blunt and of irregular shape. Females 2.12-2.40 mm long.

Bromidella sarvi is very similar to species placed in Uhakiella Opik, 1937 but in typical Uhakiella

species the males possess special features not present in the juvenile tecnomorphs ( = larvae) (cf.

R. E. L. Schallreuter , Palaeontographica, (A), 144, pi. 19, figs. 1, 8, 1973). The females of Bromidella

reticulata Harris, 1931 (type-species) are distinguished mainly by the lack of a laterovelar furrow

and by the ornament on the dolon (short anteroventral ridge, ventral row of spines becoming larger

in posterior direction), features considered significant at specific level. The morphology of the males

of B. reticulata is unknown. By comparison with related genera (for example Hithis Schallreuter,

1964), it is presumed that the tecnomorphic velum consists of a row of spines or a flange and spines,

similar to that in B. sarvi.

Known only from Backsteinkalk erratic boulders (Types IB 2, IB 7), lower Upper Viruan, middle

Ordovician; northern Germany, Denmark.

Explanation of Plate 10, 28

Fig. 1, late juv. LV, ext. lat. (GPIMH 2710, 1.835 mm long excluding spines); fig. 2, young juv. LV (GPIMH 2711, 1.025 mm long

excluding spines).

Scale A (250/Ltm; x 51), fig. 1; scale B (100 p.m; X 86), fig. 2.

I

Stereo-Atlas of Ostracod Shells 10, 26

1-1-1-

M-

i -r

Bromidella sarvi (4 ol 4)

n — r

ITT

Bromidella sarvi (2 of 4)

Stereo-Atlas of Ostracod Shells 10, 28

+-++

4 — L

llJ

-T-l-

r+-t

Stereo-Atlas of Ostracod Shells 10 (7) 29-38 (1983) Nannocythere pavo (1 of 10)

595.337.14 (119.9) (261.27 : 162.006.54 + 162.005.55 + 161.007.54 + 261.268) : 551.351

ON NANNOCYTHERE PAVO (MALCOMSON)

by John Athersuch & David J. Horne

(B.P. Research Centre, Sunbury-on-Thames & City of London Polytechnic)

Genus NANNOCYTHERE Schafer, 1953

1953 Nannocythere gen. nov. Schafer , Hydrobiologia 5, 352.

Type-species: Nannocythere remanei Schafer, 1953 { = Bythocythere pavo Malcomson, 1886)

Diagnosis: Adult carapace small (< 350 pm long), elongate; anterior margin rounded with broad, compressed

flange; strongly inflated. Eye spot absent. Surface strongly and evenly pitted, bearing numerous ]

pore conuli which are most prominent posteriorly and anteriorly. Hinge gongylodont with smooth

median element; posterior tooth of right valve bilobate but not split. Frontal muscle scar U-shaped;

middle two of four adductor scars larger.

Small anterior and posterior vestibules. Radial pore canals few, simple. Antennula five-

jointed (fourth and fifth podomeres fused). Male copulatory appendages with a prominent, coiled

ductus ejaculatorius.

Explanation of Plate 10, 30

Fig. 1, ?- 1 juv. LV, ext. lat. (syntype, 270 jum long); fig. 2,$LV, ext. lat. (1982.283, 290 pm long); fig. 3,?RV, ext. lat (1982.283, 290 /am

long).

Scale A (100|U.m; x 190), figs. 1-3.

IT

rr

-t-r — i

+ + +

44 4

T-r

+ + 4

Stereo-Atlas of Ostracod Shells 10, 31

Nannocythere pavo (3 of 10)

Remarks: Selected parts of Schafer’s (1953) generic diagnosis have been freely translated from the German

with the assistance of S. Horne as follows: First antenna (= antennula) . . . “end part three- jointed,

richly furnished with long and short setae; chelate setae absent.” Second antenna (= antenna) . . .

“penultimate podomere unsegmented; terminal podomere bears two chelate setae of equal length”.

Mandible . . . “with four-jointed palp . . . bearing respiratory plate with two setae.” Maxilla

(=maxillula) . . . “(palp) with three normally formed endites and a distinct end segment . . .;

respiratory plate without mouthward directed setae.” Legs . . . “setal formulae of basal podomeres:

221/211/210.” Furca . . . “with two setae.” Observations on the poorly preserved appendages of

specimens available to us are consistent with this diagnosis.

Moore (1961, Treatise on Invertebrate Paleontology, Q, Arthropoda 3 , Crustacea Ostracoda,

Kansas; 353) regarded the affinities of Nannocythere as uncertain; Hartmann & Puri (1974, Mitt,

hamb. zool. Mus. Inst., 70, 26) refer this genus to the Cytheridae. In our opinion, Nannocythere

should be placed in the Loxoconchidae since it possesses a gongylodont hinge, anterior and posterior

vestibules and few, simple radial pore canals. It may be distinguished from other loxoconchid

genera by a combination of small size, presence of pore conuli and absence of a fulcral point. The

type-species apparently lacks a reflexed seta on the respiratory plate of the maxillula; otherwise the

appendages are loxoconchid in character.

Explanation of Plate 10, 32

Fig. 1 , dear., ext. It. lat. ( 1982. 282, 330 pm long) ; fig. 2,dLV, ext. lat. ( 1982. 284, 300 pxa long) ; fig. 3,dRV, ext. lat. (1982. 285, 300 pm

long).

Scale A (100p.m; x 190), figs. 1-3.

I I

Jj

I

u

-t-l-T-

Stereo- Atlas of Ostracod Shells 10, 30

Nannoc.ythere pavo (2 of 10)

— M--

--IT

•~rr

i-r-

i

i

i

i

. j±.

i i

Stereo -Atlas of Ostracod Shells 10, 32

Nannocythere pavo (4 of 10)

H

r

i

-L±_l

-4 — L-

-T-l-f

Type locality:

Diagnosis:

Figured specimens:

Stereo- Atlas of Ostracod Shells 10, 33 Nannocy there pavo (5 of 10)

Nannocy there pavo (Malcomson, 1886)

1886 Bythocythere pavo sp. nov. S. M. Malcomson, Rep. Proc. Belf. Nat. Fid Club, Appendix 9 (1884-5), 261, figs. 5-7.

1953 Nannocythere remanei sp. nov. H. W. Schafer , Hydrobiologia 5, 353, figs. 1-6.

Syntype: A juvenile (-1?) left valve; Malcomson ostracod collection, slide 26, square 24; housed in the

National Irish Museum, Dublin, Eire.

Six miles off Black Head, Belfast Bay, N Ireland; approx, lat. 54° 56' N, 05° 42' W.

Adults small (300-330 pm long); posterior margin truncate, dorsal and ventral margins parallel.

Weak alar expansions present ventrolaterally, each terminating abruptly posteriorly in a small

ornamented node. Seven anterior and four posterior radial pore canals, each opening at a marginal

pore conulus.

National Museum of Ireland specimen (syntype, ?-l juvenile LV: PI. 10, 30, fig. 1). Brit. Mus. (Nat.

Hist.) nos. 1982. 282 (d car. : PI. 10, 32, fig. 1), 1982. 283 ( 9car. + appendages; LV: PI 10,30,fig.2;

RV: PI. 10, 30, fig. 3; PI. 10, 36, fig. 2; Text-fig. 1; appendages: Text-figs. 3a-e), 1982.284 (dLV:

PI. 10, 32, fig. 2; PI. 10, 34, fig. 3; PI. 10, 36, figs. 3, 5, 6; Text-fig. 2), 1982.285 (cTRV; PI. 10,32,

fig. 3; PI. 10, 34, fig. 2; PI. 10, 36, figs. 4, 7), 1982.286 (dear. + appendages; car.: PI. 10, 34, fig. 1 ;

PI. 10, 36, fig. 8; appendages: Text-figs. 3f-h), 1982.287 (<fRV: PI. 10, 36, fig. 1).

The syntype, from 6 miles (= 10 km) ESE of Black Head, Eire, has been returned to its

original slide in the Malcomson ostracod collection in the National Museum of Ireland, Dublin.

B.M. (N.H.) no. 1982.282 was taken from a slide in the Norman collection (1911.11.8.M3819)

marked “ Bythocythere recta Brady junior = B. pavo Malcomson. Between the Cumbrae Isles, 15-

20 fathoms, July 1885”. Nos. 1982. 283-287 are all from surface sediments at depths of 75-100 m in

the Western Approaches of the English Channel. These and other specimens (not figured herein)

were kindly provided by S. Sturrock.

Explanation of Plate 10, 34

Fig. I, dear., dors. (1982.286, 310/xm long); fig. 2,dRV, int. lat. (1982.285, 300pm long); fig. 3,dLV, int. lat. (1982.284, 300 yum

long).

Scale A (100 yu,m; x 190), figs. 1-3.

-t-r— i

-44-1

T

rr

-M--t

Stereo -Atlas of Ostracod Shells 10, 35

Nannocythere pavo (7 of 10)

Remarks: The only remaining specimen oiN.pavo in the Malcomson collection is undoubtedly a juvenile (?-l)

instar as it is very small (280 gm long), thin-shelled with poorly developed hinge and marginal areas.

It compares well with larger specimens in showing incipient or partial development of the pore

conuli, ornament and alae which are characteristic of adults of this species.

Two other juvenile specimens from “off Black Head, Belfast Bay” are housed in a slide

marked “ Bythocythere ? pavo n. sp. type = Cytheropteron rectum junior” in the Brady collection,

Hancock Museum, Newcastle-upon-Tyne. They may possibly also be syntypes, since they are likely

to have been sent to Brady by Malcomson.

Brady & Norman, 1889 ( Scient . Trans. R. Dubl. Soc., ser. 2, 4, 223) considered Malcomson’s

material of N. pavo to be a juvenile instar of Cytheropteron rectum Brady, 1868. From our

examination of the type material of both C. rectum (B.M. (N.H.) slide no 1911. 11.8.M3820) and

N. pavo (herein), it is clear that the two species are distinct and are probably not even congeneric. The

two species have similar surface ornament and hinges but A. pavo (300- 330 yarn) is considerably

smaller than C. rectum (490 yum). The latter bears a distinct vertical median sulcus, a fulcral notch

and prominent alae but lacks an anterior marginal flange. No appendages of C. rectum were available

for comparison.

Cytheromorpha nana Bonaduce, Ciampo & Masoli, 1975 ( Pubbl . Staz. zool. Napoli, 40, 114,

pi. 70, figs. 9-11) from the Recent of the Adriatic bears a superficial resemblance to N.pavo and may

belong to Nannocythere. If differs from N. pavo in its lack of alae and in bearing a faint reticulum.

Another Recent species, Loxoconcha sp., illustrated by Reys, 1961 {Reel. Trav. Stn mar. Endoume,

22, 82, pi. 9, figs, la-e) from near Marseilles is in our opinion congeneric with N. pavo, but

differences in the shapes of the male copulatory appendages serve to separate the two species.

Explanation of Plate 10, 36

Fig. l,dRV, vent. (1982.287, 300 yum long); fig. 2,?RV, vent. (1982.283, 290yu.m long); fig. 3,dLV, post, hinge element (1982.284);

fig. 4, d RV, ant. hinge element (1982.285); fig. 5,dLV, dors, ornament (1982.284); fig. 6,dLV, ant. hinge element (1982.284); fig. 7,

dRV, post, hinge element (1982.285); fig. 8, dear., post. dors, ornament (1982.286).

Scale A (100 Mm; x 190), figs. 1, 2; scale B (lOyurn; x 1200), figs. 3, 4, 6, 7; scale C (lOyum; x 1700), figs. 5, 8.

ri

T]

.XL

I I

1

I I

IT

I I I

Stereo-Atlas of Ostracod Shells 10, 34

Nannocvthere Davo (6 of 10) i

i-ri-

i-tt-

“IT

“IT

--IT

'“IT

t-r-

i

-I — 4—1 —

- -I — t- -

Stereo- Atlas of Ostracod Shells 10, 36

- -14

Nannocythere pavo (8 of 10)

I-

r

4 J — |-

I I i

. L-L.L-

I

I

I

I

t— l-T-

I

I

Stereo- Atlas of Ostracod Shells 10, 37

Text-fig. 1. Nannocythere pavo, 9 RV seen in transmitted light. (1982.283).

Text-fig. 2. Nannocythere pavo, dLV, muscle scar pattern. (1982.284).

Nannocythere pavo (9 of 10)

-!-i_t —

%0

10pm

i-r

■1-1-

Distrihution: We have encountered this species in material from the English Channel where it was living in asso-

ciation with coarse sands and gravels. It is also known from several other marine sublittoral localities:

N Ireland (Malcomson), Eire (Brady collection), Helgoland (Schafer) and Cumbrae, Scotland

(B.M. (N.H.) collection).

t-+

Stereo- Atlas of Ostracod Shells 10, 38

Nannocythere pavo (10 of 10)

Text-fig. 3. Nannocythere pavo, appendages, a- antennula, b- antenna, c- mandible, d- maxillula, e-g- legs 1-3, h- copulatory appendage,

a-e: 9(1982.283); f-h: ,^(1982.286).

■i -r-

— i-i — i —

-4 — L-

-11J

Stereo-Atlas of Ostracod Shells 10 (8) 39-52 (1983)

595.337.14 (119) (268 + 261.410 + 481 + 73 + 798) : 551.35

Robertsonites tuberculatus (1 of 14)

ON ROBERTSONITES TUBERCULATUS (SARS)

by David J. Horne

( City of London Polytechnic, England)

Genus ROBERTSONITES Swain, 1963

Type-species: Robertsonites gubikensis Swain, 1963 ( =Cythereis tuberculata Sars, 1866)

Diagnosis: Carapace subquadrate in lateral view, tapering posteriorly. Anterior margin broadly rounded.

Sexual dimorphism conspicuous, male more elongate and less inflated than female. Ornament

reticulate with variously disposed nodes or swellings. Anterior and postero-ventral margins may

bear small spines or denticles. Hinge holamphidont with elongate, curved anterior and posterior

teeth in right valve, and a crenulate median element. Four adductor muscle scars in a vertical row,

the top one separated from the other three; frontal scar U- or J-shaped. Radial pore-canals swollen

at mid-length, 20-30 anteriorly and 10-15 posteriorly. Small anterior vestibule.

Antennula six-jointed. Spinneret seta (exopodite) of antenna long in male, short in female.

Respiratory plate (exopodite) of mandible palp bearing five setae. First and second legs of similar

size, third leg considerably longer with a long, slender terminal claw. Setal formulae of basal

podomeres of legs: 221, 211, 211. Posterior setae of basal podomeres of first and second legs carrot-

shaped, pilose. Male copulatory appendage relatively large, complex, with a prominent ductus

ejaculatorius and variously-shaped distal processes.

Remarks: The diagnosis of the appendages is based on R. tuberculatus ; apart from the type-species, only one

other species of Robertsonites is known, namely the Recent Antarctic species R. antarcticus Neale,

Explanation of Plate 10, 40

Fig. l,cfLV, ext. lat. ( 1982. 193, 1080/xm long); fig.2,9LV, ext. lat. (1982. 194, 1020yum long); fig. 3, juv. (-2) LV, ext. lat. (1982. 195,

680/j.m long).

Scale A (250/xm; x 60), figs. 1-3.

tt-i

-t + -i

+ + H

44 4

+ + +

1866

1866

1866

Stereo-Atlas of Ostracod Shells 10, 41 Robertsonites tuberculatus (3 of 14)

Remarks (cont.); 1967, the appendages of which have not been described. The appendages of Robertsonites are

closely similar to those of Trachyleberis Brady, 1898 (see Harding, J. P. & Sylvester-Bradley, P. C.,

Bull. Brit. Mus. Nat. Hist. (Zool.), 2, (1), 1-16, 1953). Robertsonites , however, lacks the spinose

surface ornament of Trachyleberis, and there are differences in the shape of the hinge teeth.

Robertsonites tuberculatus (Sars, 1866)

Cythereis tuberculata sp. nov. G. O. Sars, Forh. VidenskSelsk. Krist., (vol. for 1865), 37.

Cythere clathrata Reuss; G. S. Brady, Trans, zool. Soc. Lond., 5, (pars), 376-377, pi. 59, figs. 12a-c (var. lyrata), 13a-c (var.

latimarginata) only, (non pi. 59, figs. 9a-c. lOa-c (var. nuda ), 1 la-d). [non Cypridina clathrata Reuss, 1849 ,non Cythere lyrata

Reuss, 1856, non Cythere latimarginata Speyer, 1863].

Cythere mutabilis Brady (MS); G. S. Brady, Trans, zool. Soc. Lond. 5, (pars), 377, pi. 59, figs. 14c-h only, (non pi. 59, figs.

14a-b).

Cythere tuberculata (Sars); G. S. Brady, Trans. Linn. Soc. Lond., 26, 406-407, pi. 30, figs. 25-39.

Cythere tuberculata (Sars); G. S. Brady, H. W. Crosskey & D. Robertson, A monograph of the Post-Tertiary Entomostraca of

Scotland (including species from England and Ireland), Palaeontographical Soc. Lond., 164-165, pi. 5, figs. 7-12.

Cythere logani Brady & Crosskey; G. S. Brady, H. W. Crosskey & D. Robertson, Palaeont. Soc. Lond., 165, pi. 15, figs. 17-18,

(non C. logani Brady & Crosskey, 1871).

Cythereis tuberculata Sars; G. O. Sars, An account of the Crustacea of Norway, 9, Ostracoda. Bergen Museum, parts 11-12,

192, pi. 88.

Robertsonites gubikensis sp. nov. F. M. Swain, J. Paleont., 37, (4), 821-822, pi. 98, figs. 8a-b, pi. 99, fig. 12; Text-fig. 9b.

Robertsonites tuberculatina sp. nov. F. M. Swain, J. Paleont., 37, (4), 822-823, pi. 98, fig. 10, pi. 99, fig. 1; Text-fig. 9c.

Robertsonites logani (Brady & Crosskey); F. M. Swain, J. Paleont., 37, (4) 823, pi. 97. fig. 13, (non Cythere logani Brady &

Crosskey, 1871).

Robertsonites tuberculata [sic ] (Sars); J. E. Hazel, U.S. Geol. Survey Prof. Paper 564, 35, pi. 6, figs. 1-3.

Robertsonites tuberculata [sic] (Sars) ; J. W. Neale & H. V. Howe, Bull. Amer. Paleont., 65, (282), pi. 1 , fig- 1, pi. 2, figs. 1-3.

Robertsonites tuberculatus (Sars); T. M. Cronin, Micropaleontology , 27, (4), 400-402, pi. 8, fig. 5.

1868

1874

1874

1925

1963

1963

71963

1967

1975

1981

'Tf-

■TP

Explanation of Plate 10, 42

Fig. l.c/RV, ext. lat. (1982. 193, 1070/zm long); figs. 2, 3,9 RV (1982. 194, 1020Mm long), fig. 2, ext. lat., fig. 3, detail of antero-dorsal

region.

Scale A (250/zm; x 60), figs. 1, 2; scale B (50p.m; x 320), fig. 3.

-XL.

I I

-l-t

Stereo- Atlas of Ostracod Shells 10, 40

Robertsomtes tuberculatus (2 of 14

a_i_

-14

i-

Stereo-Atlas of Ostracod Shells 10, 42

-t-r-

Robertsonit.es tuberculatus (4 of 14)

--IT"

I I

4 — L

I i l

±14

-r-f-

r- t--t

Stereo-Atlas of Ostracod Shells 10, 43

Robertsonites tuberculatus (5 of 14)

Type-specimens: The specimens of R. tuberculatus in the Sars collection (Zoological Museum, Oslo, no. F12033,

Mp. 528) are in poor condition. However, the descriptions and illustrations of Sars (1866, 1925)

adequately define this species.

Coasts of Norway; recorded by Sars (1866) from Christiania (= Oslo) Fjord, the Lofoten

Islands and Oxfjord (Finmark), to depths of up to forty fathoms (=73m).

Figured specimens: Brit. Mus. (Nat. Hist.) nos. 1982.193 (rfLV: pi. 10, 40, fig. 1; RV: pi. 10, 42, fig. 1; appendages:

text-figs. 2a-d, 3a, 3c), 1982.194 ($> LV: pi. 10, 40, fig. 2; RV; pi. 10, 42, figs. 2-3, pi. 10, 46, figs.

1-4), 1982.195 (juv.-2; LV: pi. 10, 40, fig. 3; RV: pi. 10, 44, fig. 3), 1982. 196 (d car.: pi. 10, 44,

fig. 1), 1982.197 (9 car.: pi. 10, 44, fig. 2), 1982. 198 ( 9 RV: pi. 10, 48, fig. 1), 1982. 199 (cfLV:

pi. 10, 48, figs. 2-3), 1982.200 ( d appendages: text-figs, la, 3b), 1982.201 (rfLV; text-fig. lb),

IO 6739 ( 9 LV : pi. 10, 50, fig. 3). 1982.247 (cfRV: pi. 10, 50, fig. 1), 1982. 248 (9 RV: pi. 10,50,

fig. 2). 1982. 193-200 all from the A. M. Norman collection; 1982. 193, 195, 196, 197 from Lervig

(Larvik), Norway (approx, lat. 59° 05' N, long. 10° 00' E), ex slide no. 1911.11.8 M3277;

1982.194, 200 from Hollingspollen, Drobak, Norway (approx, lat. 59° 40' N, long. 10° 40' E), ex

slide no 1900-3-6-249; 1982.198, 199 from Holsteinbourg Harbour, W Greenland (approx, lat.

66° 55' N, long. 53° 35' W), ex slide no. 1911.11.8. M3281. 1982.201 collected alive off W Mersea,

Blackwater Estuary, SE England (approx, lat. 51° 45' N, long. 00° 55' E) in September 1974, and

106739 from the Pleistocene (Hoxnian) Bridlington Crag of NE England, both provided by J. E.

Robinson. 1982.247, 248 from Recent sediments in the Gulf of Alaska provided by E. Brouwers;

1982.247 from 101m depth, lat 60° 01.0' N, long. 143° 09.3' W (EGAL-75-KC 338) and

1982.248 from 115 m depth, lat. 59° 47.4' N, long. 142° 14.4' W (EGAL-75-KC 285).

Explanation of Plate 10, 44

Fig. 1,<3 car., ext. dors. (1982.196, 1080ju,m long); fig. 2,?car., ext. dors. (1982.197, 1070/um long); fig. 3, juv. (-2) RV, ext. lat.

(1982.195, 680/u.m long).

Scale A (250,1011; x 60), figs. 1-3.

rr

rr

-t-t — i —

-H— t—

-i

4-1—

_l±_l

7

t7

Stereo-Atlas of Ostracod Shells 10, 45

Robertsonites tuberculatus (7 of 14)

-M-4

Diagnosis: Valves with reticulate ornament modified by the presence of five or six nodes or tubercles; the sub-

central, postero- dorsal and postero- ventral nodes are the most prominent, while weaker nodes may

be seen posteriorly, antero-dorsally and antero-ventrally. Male copulatory appendage with a long,

tapering distal process directed anteriorly and two smaller processes directed ventrally and

posteriorly.

Remarks: Hazel (1967, op. cit.) has shown the holotypes of R. gubikensis Swain and R. tuberculatina Swain to

be female and male respectively of R. tuberculatus. As Hazel and other authors have remarked,

R. tuberculatus exhibits considerable variation in outline and ornament. The development of the

nodes and reticulation is very variable; the nodes may be more conspicuous in juvenile specimens,

while in adults they are often obscured by strong primary and secondary reticulation. Specimens

from Greenland (see pi. 10, 48, figs. 1-2) have more conspicuous secondary reticulation and are

larger than those from Norway (see pi. 10, 40, figs. 1-2. and pi. 10, 42, figs. 1-2) but a comparison of

their male copulatory appendages, which are identical, has shown them to be conspecific. Specimens

from the Alaskan Shelf (see pi. 10, 50, figs. 1-2) are less elongate and have more prominent nodes

than those from Greenland and Norway. Unfortunately I have been unable to obtain male

copulatory appendages from Alaskan material.

Explanation of Plate 10, 46

Figs. 1-4. $RV (1982.194, 1020/xm long): fig. 1, int. lat., figs. 2, 3, anterior and posterior hinge elements, fig. 4, int. muse. sc.

Scale A (250^m ; x 60), fig. 1 ; scale B (100 (im; x 210), figs. 2-4.

I I I

I I I

Lli

I I I

I I I

I I I

I I I

1~"M

Stereo- Atlas of Ostracod Shells 10, 44

i i

i i

J

-i

Robertsonites tuberculatus (6 of 14)

t— 1-1-

i-i-i-

-i~r

“IT

t-

r

— i_ i

— 1 4-

H

Stereo- Atlas ot Ustracod Shells 10, 4b

Robertsonites tuberculatus (8 ot 14J

t-r

-n — |-

1TT

l-L-

-±LJ

-T-t— t

Stereo-Atlas of Ostracod Shells 10, 47

Robertsonites tuberculatus (9 of 14)

Text-fig. 1. a: d'copulatory appendage (1982.200); b.dLV (1982.201) drawn in transmitted light; dotted lines show approximate

positions of nodes.

Explanation of Plate 10, 48

Fig. 1,9 RV, ext. lat. (1982. 198, 1100 pm long); figs. 2, S-c/LV ( 1982. 199, 1210 pm long), fig. 2, ext. lat., fig. 3, detail of antero-central

region.

Scale A (250pm; x 60), figs. 1-2; scale B (50pm; x 320), fig. 3.

--t-t -i

.J4J

- H — t

-Tf

•tr-

.1L.

I I

Stereo- Atlas of Ostracod Shells 10, 49

Distribution:

Robertsonites tuberculatus (11 of 14)

Recent: most abundant in Arctic seas (Neale & Howe, op. cit.) ; N Atlantic, coasts of NW Europe

from N Norway to southern N Sea, Greenland and NE America (Hazel, op. cit., and herein) ; Gulf of

Alaska (herein); sublittoral. Pleistocene: British Isles (Brady, Crosskey & Robertson, op. cit., and

herein), Norway (Sars, op. cit.), NE America (Cronin, op. cit.), and Alaska (Swain, op. cit.).

Explanation of Plate 10, 50

Fig. l,dRV, ext. lat. (1982.247, 1020pm long); fig. 2,9 RV, ext. lat. ( 1982. 248, 940pm long); fig. 3,9LV, ext. lat. (IO 6739, 1010pm

long).

Scale A (250p.ni; x 60), figs. 1-3.

I I I

.L-LJ.

-i— M--

Stereo- Atlas of Ostracod Shells 10, 48

Robertsonites tuberculatus (10 of 14)

H-

t -r

Stereo- Atlas of Ostracod Shells 10, 50

i

IT7

'7T7

I < I

rtf

Robertsonites tuberculatus (12 of 14)

l

4.

1_ J_

i * l

I I

Lii

' I

I I

I I

I I

*" t

I I

Stereo-Atlas of Ostracod Shells 10, 51

Text-fig. 2. cf appendages (1982.193), a: antennula; b: antenna; c: mandible; d: maxillula.

— l_i_

l i

i i

i i

i i

-i-r

Robertsonites tuberculatus (13 of 14)

1-1--

-M--

'“IT

-+-

Stereo-Atlas of Ostracod Shells 10, 52 Robertsonites tuberculatus (14 of 14)

Text-fig. 3. d appendages; a: third leg (1982.193); b; second leg (1982.200); c: first leg (1982.193).

-t-r-

-

■

.4—4

--L±J

Stereo-Atlas of Ostracod Shells 10 (9) 53-62 (1983)

595.337.14 (119.1 + 119.9) (261.1 + 268.162.067.60;

162.019.72 + 161.011.58; 161.001.52)

Baffinicy there howei (1 of 10)

551.351

ON BAFFINICYTHERE HOWEI HAZEL

by David J. Horne and John E. Whittaker

( City of London Polytechnic & British Museum ( Natural History), London)

Genus BAFFINICYTHERE Hazel, 1967

Type-species: Cythere costata Brady, 1866 ( non M’Coy, 1844 ) = Baffinicythere howei Hazel, 1967

1967 Baffinicythere gen. nov., J. E. Hazel, U.S. Geol. Survey Prof. Paper 564, 16

Diagnosis: Carapace elongate subrectangular (male) to subtrapezoidal or auriform (female) in lateral view.

Ornament strongly reticulate, with prominent ridges forming triangle in postero-lateral region.

Marginal pore canals numerous, swollen at mid-length. Small anterior and posterior vestibules.

Hinge robust, holamphidont. Ocular sinus conspicuous. Adductor muscle scars: a single elongate

dorsal scar, two rounded dorso-median scars, an elongate ventro-median scar showing incipient

subdivision, and an elongate ventral scar. Three rounded frontal scars. Antennula with five

articulated podomeres. Male copulatory appendage with large basal capsule, small distal process

and inconspicuous ductus ejaculatorius .

Remarks: The appendages of Baffinicythere are typically hemicytherid. Hazel (1967, op. cit.) established this

genus for two species, the genotype and Cythereis emarginata Sars, 1866. From our comparison of

both species we would prefer to place C. emarginata in Hemicythere Sars, 1925, since it has only

two frontal muscle scars and a male copulatory appendage with a conspicuous ductus ejaculatorius.

In our view, Baffinicythere is monospecific, although we have been informed of several as yet

undescribed Pleistocene to Recent species of this genus found in the northern Pacific Ocean (Dr J. E.

Hazel, pers. comm.).

Explanation of Plate 10, 54

Fig. l,cfLV, ext. lat. ( 1. 22.08, paralectotype; 1,200 ^un long); fig. 2,9 LV, ext. lat. ( 1. 22.09, lectotype; 1,140/xm long); fig. 3.9RV, ext.

lat. (1983.1; 1,200/xm long).

Scale A (250/xm; x 50), figs. 1-3.

-T + + -

- + +

- + +

44J-

- + + + -

Stereo-Atlas of Ostracod Shell 10, 55

Baffinicythere howei (3 of 10)

Remarks (cont.): Baffinicythere differs from related Elofsonella Pokorny, 1955 (type-species Cythere concinna

Jones, 1857) in having the ventro-median adductor muscle scar undivided, and in the nature of the

surface ornament.

1866

1874

1967

1967

1967

1975

Baffinicythere howei Hazel, 1967

Cythere costata sp. nov. G. S. Brady, Trans, zool. Soc. Lond., 5, 375, pi. 60, figs. 5a-f. (non M’Coy, 1844).

Cythere costata Brady; G. S. Brady, H. W. Crosskey and D. Robertson, Palaeont. Soc. Lond., 166-167, pi. 5, figs. 21-24.

Baffinicythere costata (Brady); J. E. Hazel, U.S. Geol. Survey Prof. Paper 564, 17, pi. 2, figs. 7, 12-15, pi. 8, figs. 1-8.

Baffinicythere howei nom. nov. J. E. Hazel, J. Paleont., 41, 1284.

Hermanites costata (Brady); N. C. Hulings, Crustaceana, 13, 322, pi. 4, figs. 16-17, text-figs. 5A-E, 8M-N.

Baffinicythere howei Hazel; J. W. Neale and H. V. Howe, Bull. Amer. Paleont., 65, (282), pi. 2. figs. 10, 12, 13, 15, 17.

Lectotype: Female LV, Hancock Museum no. 1.22.09. (Paralectotype, male LV, no. 1.22.08).

Hunde Islands, Baffin Bay, W Greenland, approx, lat. 68° 52' N, long. 53° 07' W, depth 60-

70 fathoms (110-128 metres); Recent.

Figured specimens: Hancock Museum nos. 1.22.08 (dLV, paralectotype: pi. 10, 54, fig. 1), 1.22.09 ( 9LV, lectotype:

pi. 10, 54, fig. 2), 1.22.10(d'RV: pi. 10, 56, fig. 2), 1.22. 11 ( 9RV: pi. 10, 56, fig. 3), 1.22.12(9car.:

pi. 10, 58, fig. 1. British Museum (Natural History) nos. 1983.1 (9 RV: pi. 10, 54, fig. 3), 1983.2

(cfRV: pi. 10, 58, figs. 2-4), 1983.3 (c/LV: pi. 10, 56, fig. 1 ; pi. 10, 60, figs. 1-2), 1983.4 (d RV:

text-fig. la; appendages: text-figs, lc, 2c, 3a-d), 1983.5 (9 RV: text-fig. lb; appendages: text-

figs. 2a, b, d, e), OS. 7691 (cfRV: pi. 10, 60, fig. 3).

The Hancock Museum specimens were taken from the Brady collection; the lectotype and

paralectotype from syntypic slide no. 1. 10.36 (labelled “ Cythere costata (Brady), Hunde Islands”),

no. 1.22. 10 from slide no. 1. 10.34 (from Uddevalla, Sweden, approx, lat. 58° 21 ' N, long. 1 1° 56' E),

nos. 1.22.11 and 1.22. 12 from slide no. 1.10.35 (also from Uddevalla).

Explanation of Plate 10, 56

Fig. l,dLV, ext. lat. (1983.3; l,180Mm long); fig. 2,dRV, ext. lat. ( 1.22. 10; 1,180/xm long); fig. 3,9RV, ext. lat. ( 1.22. 11; l,120Mm

long).

Scale A (250jum; x 50), figs. 1-3.

-rr-

-Tr-

,1L.

I I

J-L

I

I

1 l“T

I

I

I

Stereo-Atlas ot Ostracod Shells 10, 64

-t-r

Baffinicythere howei (2 ot 10)

i-ri--

J-L-

•1T

i -r-

Baffinicythere howei (4 ot 10)

— H -f-

Stereo-Atlas of Ostracod Shells 10, 56

I I

-4 — 14

i 1 I

--LJ l .

-T-l-f

Stereo- Atlas of Ostracod Shells 10, 57

Baffinicythere howei (5 of 10)

The Brit. Mus. (Nat. Hist.) specimens 1983.1-3 were taken from Norman collection slides

labelled “Cythere costata”\ 1983.1 (ex slide no. 1911.11.8 M3346) is from the type locality,

1983.2 and 1983.3 (ex 1911.11.8 M3345) are from Unst Haaf, Shetland (approx, lat. 61° 00' N,

long. 1°30' W). Nos. 1983.4and 1983. 5, from UngavaBay, Labrador (lat. 60° 08' N,long. 67°47' W),

depth 73m, and off Shannon Island, E Greenland (lat. 75° 20' N, long. 19° 00' W), depth <200m,

respectively, were kindly provided by Dr J. E. Hazel. No. OS 7691 was collected by Prof. D. Curry

from the Butley Crag (Red Crag Series; pre-Ludhamian stage of the pre-glacial Pleistocene) at

Neutral Farm, near Butley, Suffolk, England (approx, lat. 52° 05' N, long. 1° 30' E).

Diagnosis: Carapace large (> 1.00mm long), strongly reticulate, with prominent sub-marginal curved rib

running from just in front of eye-tubercle, converging with antero-ventral margin, and bending

upwards posteriorly to meet anterior corner of postero-lateral triangle of ribs.

Remarks: Brady’s syntypic material is housed in the Hancock Museum, Newcastle-upon-Tyne, on three

separate slides, each containing several disarticulated valves, and numbered 1. 10.32, 1. 10.33 and

1.10.36. We have selected a lectotype from 1.10.36.

Distribution: Recent: B. howei is a characteristic sublittoral marine Arctic species, most abundant in the Arctic

Province, but extending south to about 59° N in the eastern N Atlantic (Norwegian Province) and

about 41° N in the western N Atlantic (Nova Scotian Province), with an approximate depth range of

20-200m (Hazel, 1967, op. cit. ; Neale and Howe, 1975, op. cit.).

Pleistocene: British Isles, including the Bridlington Crag (Hoxnian) of Yorkshire (Brady,

Crosskey and Robertson, 1874, op. cit.) and the Red Crag (pre-Ludhamian) of East Anglia

(herein). Where abundant, it may be taken to indicate cold temperate to frigid climatic conditions.

Explanation of Plate 10, 58

Fig. 1,9 car. ext. dors. ( 1.22. 12; 1,160/xm long); figs. 2-4,dRV ( 1983.2; 1,180 pm long), fig. 2, int. lat., figs. 3-4, anterior and posterior

hinge elements.

Scale A (250p,m; x 50), figs. 1, 2 scale B (100 p,m; x 170), figs. 3, 4.

--t-r-t-

-444-

Stereo-Atlas of Ostracod Shells 10, 59

Baffinicythere howei (7 of 10)

Explanation of Text-Figure 1

a-b) RV’s drawn in transmitted light, showing marginal pore canals; a:cf(1983.4), b:9 (1983.5); scale A = 100pm.

c)cfcopulatory appendage (1983.4); scale B = 100p.m.

Explanation of Plate 10, 60

Figs. l-2,d'LV (1983.3; l,180p.m long), fig. 1, int. lat., fig. 2, int. muse, sc.; fig. 3,dRV, ext. lat. (OS 7691; l,080p.m long).

Scale A (250p,m; x 50), figs. 1,3 scale B (100 p,m; x 210), fig. 2.

-rr-

-rr

-1-1-

,1L.

— i-r-

Stereo- Atlas of Ostracod Shells 10, 58

Baffinicy there howei (6 of 10)

i-ri-

l-i--)-

-14

H

4--+ +

rl-r

Stereo- Atlas of Ostracod Shells 10, 60

Baffinicythere howei (8 of 10)

i i

tT-r

“tT-f

I i i

i i i

_J4_|_

_L±_L.

-l-T-

Stereo- Atlas of Ostracod Shells 10. 61

Baffinicythere- howei (9 of 10)

Explanation of Text-Figure 2

a, b, d, e)9 appendages (1983.5); a: antennula, b: antenna, d: mandibular palp, e: maxillula (palp and masticatory processes only),

c) d spinneret seta (exopodite of antenna) (1983.4).

Scale A = 100 p.m.

-!- + +—

-I— J-L.

t~H--

Stereo- Atlas of Ostracod Shells 10, 62

Baffinicythere howei (10 of 10)

Explanation of Text-Figure 3

d appendages (1983.4); a) first leg, b) second leg (basal podomere absent), c) third leg, d) mandible (distal part of palp absent).

Scale A = 100p.m.

■t -r-

J-L_ |_

I I I

'

_

4 — L

11J

r- t-t

Stereo- Atlas of Ostracod Shells 10 (10) 63-66 (1983) Poly cope foraminosa (1 of 4)

595.339.2 (119.9) (595:163.118.05) : 551.351

ON POLYCOPE FORAMINOSA HASAN sp. nov.

by Manzoor Hasan

( University of Leicester, England)

Polycope foraminosa sp. nov.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Brit. Mus. (Nat. Hist.) no. OS 10132; RV.

Darvel Bay, Malaysia, lat. 04° 44.5' N, long. 118° 30.0' E; Recent.

Latin, foraminosus, full of holes; suggested by the puncta distributed over most of the shell surface.

Brit. Mus. (Nat. Hist.) nos. OS 10132 (holotype, RV: PI. 10, 64, figs. 1, 3; PI. 10, 66, fig. 1);

OS 10133 (LV: PI. 10, 64, fig, 2; PI. 10, 66, figs. 2, 3).

Specimen OS 10132 (holotype) was collected from a depth of 34 fathoms; OS 10133 is from

lat. 04° 40.2' N, long. 118° 44.0' E, collected from 40 fathoms. Both figured specimens are from

Darvel Bay, Malaysia, collected by HMS Dampier in 1965.

Explanation of Plate 10, 64

Fig. 1, RV, ext. lat. (holotype OS 10132, 414/um long.); fig. 2, LV, ext. lat. (OS 10133, 414/am long.); fig. 3, RV, ext. median region

showing impression of the muse. sc. (holotype OS 10132).

Scale A (100 /um; xl70), figs.l, 2; scale B (lO^m; x 1026), fig. 3.

-t-r — i

41 — I

H

4-U

44 4

T

M

Stereo- Atlas of Ostracod Shells 10, 65

Polycope foraminosa (3 of 4)

-M- 4

Diagnosis:

Remarks:

Distribution:

Rounded or subrounded puncta uniformly cover most of the shell surface. On the mid-ventral

margin several delicate carinae branch, each to form a Y-shaped pattern; the stem of the Y is directed

away from the margin.

The valve is oval and the peripheral carina distinctly developed. Anterior process bears a subdued

rostrum. Line of maximum height lies anterior to the mid- length. Line of maximum length passes

through the centrally located muscle-scar region. Several delicate carinae are present on the periph-

eral region. The muscle-scar is typical of the genus. The hinge is short.

Polycope foraminosa sp. nov. has some similarity with the description of Polycope punctata

Sars but clearly differs from it in the possession of branched carinae with Y-shaped pattern. Also,

well developed rounded and subrounded puncta more uniformly cover most of the shell surface in

P. foraminosa but in P. punctata Sars the puncta are not so well developed and numerous.

Known only from Recent, Darvel Bay, Sabah, Malaysia.

Explanation of Plate 10, 66

Fig. 1, RV, mid. vent, margin showing delicate Y-shaped carina (holotype OS 10132); fig. 2, LV, int. muse. sc. (OS 10133); fig. 3. LV.

int. lat. (OS 10133).

Scale A (15/u.m; x 1026), fig. 1; scale B (15/u.m x 659), fig. 2; scale C (100/xm; x 169), fig. 3.

-Tf

■tp

,1L.

I I

I I I

. Lll.

I I

I I

I I

I I

-1--+T-

I

I

Stereo- Atlas of Ostracod Shells 10. 64

Poly cope foraminosa (2 of 4)

■ 44

Stereo- Atlas of Ostracod Shells 10, 66

Polycope foraminosa (4 of 4)

“IT

-IT

L

4— L

4-^

-Ll_l

Stereo-Atlas of Ostracod Shells 10 (11) 67-70 (1983) Polycope choane (1 of 4)

595.339.2 (119.9) (595:163.118.05) : 551.351

ON POLYCOPE CHOANE HASAN sp. nov.

by Manzoor Hasan

( University of Leicester , England)

Polycope choane sp. nov.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Brit. Mus. (Nat. Hist.) no. OS 10112; RV.

Darvel Bay, Malaysia, lat. 04° 43.8' N, long. 118° 32.7' E; Recent.

Greek, choane , funnel-shaped hollow; suggested by the presence of funnel pores on the shell

surface.

Brit. Mus. (Nat. Hist.) nos. OS 10112(RV:P1. 10, 68, figs. 1,3; PI. 10, 70, figs. 1-3), OS 10113 (LV:

PI. 10, 68, fig. 2).

Specimen OS 101 12 (holotype) is from 222 ft., collected in 1962. Specimen OS 101 13 is from

lat. 04° 40.6' N, long. 1 18° 35 .3' E, from 35 fathoms, collected in 1965. Both figured specimens are

Recent, from Darvel Bay, Malaysia, collected by HMS Dampier.

Explanation of Plate 10, 68

Fig. 1, RV, ext. lat. (holotype, OS 10112, 439/Am long); fig. 2, LV, ext. lat. (OS 10113, 390/aiti long); fig. 3, RV, mid dorsal region

showing elongate double pore (holotype, OS 10112).

Scale A (100 pun; x 159), figs. 1, 2; scale B (25/Am; x 375), fig. 3.

-r-t

-t-n —

44 J

T

r-r

Stereo-Atlas of Ostracod Shells 10, 69

+ +•-+-

Polycope choane (3 of 4)

Diagnosis:

Remarks:

Distribution :

Species of Polycope with ornament consisting of delicate dendritic and anastomising ridges which

form characteristic scale-like pattern in the ventral region. Well developed funnel pores are

scattered on the shell surface.

Valve ovoid. Line of maximum length passes through the region of the muscle-scar. Line of maxi-

mum height lies anterior to the mid-length. Funnel pores are rimmed and each pore has a single

aperture. However, one specimen (the holotype) has a double-pore in the mid-dorsal region; it is

elongate with two apertures separated by a dividing wall. Anterior process is well defined and

protrusive. Hinge region is short and narrow. Muscle-scar is typical of the genus.

Polycope choane sp. nov. is close to Polycope striata Muller ( Zool . Stat. Naples Monogr. 1894

(21), 236-237, pi. 8, fig. 24) but is more elongate in outline with distinctly pointed anterior and more

narrowly rounded posterior end. Ornamentally the dendritic ridges of P. choane cut across

secondary ridges ventrally, a feature lacking in P. striata.

Known only from Recent, Darvel Bay, Sabah, Malaysia.

Explanation of Plate 10, 70

Fig. 1, RV, int. lat. (holotype, OS 10112); fig. 2, RV, int. lat. muse. sc. (holotype, OS 10112); fig. 3, RV, vent., scale-like pattern

(holotype, OS 10112).

Scale A (100 /Am; x 166), fig. 1 ; scale B (25/Am; x 332), fig. 2; scale C (25/Am; x 664), fig. 3.

I I I

I I I

Lll

I l I

I I I

I I I

I I

t~"M

Stereo- Atlas of Ostracod Shells 10, 68

i i

Polycope choane (2 of 4)

JJ

-H

i-rt--

— i- -i —

— h

J- 1_ -

I

I

I

I

+ -

~rr

i i

i i

i i

-14

I I

I I

I I

I I

-rr

Stereo- Atlas of Ostracod Shells 10, 70

Poly cope choane (4 of 4)

i

H-

t-r

i

i

j-

r

r

J

I

4

I

L

I I I

X±4__

T-f-t

Stereo-Atlas of Ostracod Shells 10 (12) 71-74 (1983) Polycope regina (1 of 4)

595.339.2 (119.9) (595:163.118.05) : 551.351

ON POLYCOPE REGINA HASAN sp. nov.

by Manzoor Hasan

(University of Leicester, England)

Polycope regina sp. nov.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Brit. Mus. (Nat. Hist.) no. OS 10100; LV.

Darvel Bay, Malaysia, lat. 04° 38.5' N, long. 118° 39.6' E; Recent.

Latin, regina, queen; suggested by the fancied imagination that it is the beauty queen among

Poly cope.

Brit. Mus. (Nat. Hist.) nos. OS 10100 (holotype, LV: PI. 10, 72, figs. 2, 3; PI. 10, 74, figs. 1, 2);

OS 10101 (RV: PI. 10, 72, fig. 1); OS 10102 (RV: PI. 10, 74, fig. 3).

Specimen OS 10100 is from the type locality; OS 10101 is from lat. 04° 44.5' N, long.

118° 30.0' E; both from 34 fathoms, collected in 1965. OS 10102 is from lat. 04° 51.6' N, long.

118° 28.2' E, at 186 ft., collected in 1962. All figured specimens are Recent, from Darvel Bay,

Malaysia, collected by HMS Dampier.

Explanation of Plate 10, 72

Fig. 1, RV, ext. lat. (OS 10101, 487 long); fig. 2, LV, ext. lat. (holotype, OS 10100. 463 ftm long); fig. 3, LV, postero-dorsal region

showing a minor axial carina along the centre of elongate fossa (holotype, OS 10100).

Scale A (150jU,m; x 129), fig. 1; scale B (150/x.m; x 136), fig. 2; scale C (25/xm; x 512), fig. 3.

rr

rr

-t-r-i--

-t-1-H

-n-

Stereo- Atlas of Ostracod Shells 10, 73

-44 4-

Poly cope regina (3 of 4)

Diagnosis:

Remarks:

Distribution:

Species of Polycope having distinctly developed polygonal fossae with excavate muri. Fossae bear

second order reticulations. A small almost obscure rostral incisure is present at the antero-dorsal

margin.

The second order reticulation inside the fossae is basically polygonal, sometimes showing a radial

pattern, or showing a minor ‘axial’ carina along the centre of elongate fossae. The dorsal margin is

strongly curved. In lateral view the ventral margin of the hinge extends ventrally slightly, obscuring

part of the valve interior.

Polycope regina sp. nov. with its polygonal reticulation pattern bears some similarity with the

figures of Polycope orbicularis Sars, which also has polygonal reticulation. In P. regina sp. nov.

however, the polygonal fossae are more well developed and have more complex fossae, especially

the elongated ones bearing minor ‘axial’ carina.

P. regina may be distinguished from P. reticulata Muller (Zool. Stat. Naples Monogr. 1894

(21), 235-6, pi. 8, fig. 20) by having a more oval outline in which the dorsal margin is more distinctly

convex, and by having microreticulation within the primary reticulation.

In P. regina sp. nov., between the postero-dorsal and mid-posterior regions the growth of

a “flower-bud”-like structure with four nodes (PI. 10, 72, fig. 3) is variable; in some it is poorly

developed and in others it is strongly developed.

Known only from Recent, Darvel Bay, Sabah, Malaysia.

Explanation of Plate 10, 74

Fig. 1 , LV, int. lat. (holotype, OS 10100, 463 /xm long); fig. 2, LV, int. lat. muse. sc. (holotype, OS 10100); fig. 3, RV, int. lat. (OS 10102,

439/u.m long).

Scale A (150//,m; x 136), fig. 1; scale B (15ju,m; x 625), fig. 2; scale C (150^.m; x 141), fig. 3.

TT

rr

XL

I I

‘i“i

r— 1-1-

— f- -f-

J_L

4--+

I I I

LlX.

I I

I I

I I

I I

i — i — r-

i i

i i

i i

i i

i i

i i

i i

Stereo- Atlas of Ostracod Shells 10, 72

Poly cope regina (2 of 4)

Stereo-Atlas of Ostracod Shells 10, 74

Polycope regina (4 of 4)

H-

t — r

Stereo- Atlas of Ostracod Shells: Vol. 10, Part 1

CONTENTS

10(1) 1-4 On Tallinnellina dissita Schallreuter & Sivetersp. nov.; by R. E. L. Schallreuter &

D. J. Siveter.

10(2) 5-12 On Harperopsis scripta (Harper); by C. R. Jones & D. J. Siveter

10 (3) 13-16 On Vittella fecunda Siveter sp. nov.; by D. J. Siveter

10 (4) 17-20 On Sarlatina merlensis Babinot & Colin; by J. P. Colin

10 (5) 21-24 On Reginea reginae gen. et sp. nov.; by R. E. L. Schallreuter

10 (6) 25-28 On Bromidella sarvi Schallreuter; by R. E. L. Schallreuter

10 (7) 29-38 On Nannocy there pavo (Malcomson); by J. Athersuch & D. J. Horne

10 (8) 39-52 On Robertsonites tuberculatus (Sars); by D. J. Horne

10 (9) 53-62 On Baffinicythere howei Hazel; by D. J. Horne & J. E. Whittaker

10 (10) 63-66 On Polycope foraminosa Hasan sp. nov.; by M. Hasan

10 (11) 67-70 On Polycope choane Hasan sp. nov.; by M. Hasan

10 (12) 71-74 On Polycope regina Hasan sp. nov.; by M. Hasan

Prepaid annual subscription (valid for Volume 10, 1983)

Individual subscription £22.00 or US $50.00 for 2 parts (post free)

Price per Part: £22.00 or US $50.00

Institutional subscription £40.00 or US $75.00 for 2 parts (post free)

Price per Part: £40.00 or US $75.00

Back volumes: Vol. 1 (4 Parts): £20.00; price per Part: £5.00

Vol. 2 (4 Parts): £28.00; price per Part: £7.00

Vol. 3 (2 Parts): £24.00; price per Part: £12.00

Vol. 4 (2 Parts): £30.00; price per Part: £15.00

Vol. 5 (2 Parts): £32.00; price per Part: £16.00

Vol. 6 (2 Parts): £40.00; price per Part: £20.00

Vol. 7 (2 Parts): £40.00; price per Part: £20.00

Vol. 8 (2 Parts): £60.00; price per Part: £30.00

Vol. 9 (2 Parts): £60.00; price per Part: £30.00

Postage extra in sales of all back Parts

No trade discount is allowed on the subscription rate

Orders should be addressed to: Dr R. C. Whatley,

Department of Geology,

University College of Wales,

Aberystwyth, Dyfed.

Cheques should be made payable to B.M.S. (Stereo-Atlas Account)

SPECIAL OFFER

50% off all back part prices if

you become a subscriber to the Atlas