OF THE ANTWERP CRAG, 387 
oblong-ovate, widest behind. Surface of the shell minutely and rather closely punctate, 
marked by two distinct but slender ribs, one of which crosses the centre of the valve 
somewhat obliquely in a longitudinal direction ; the other lies near the ventral border, 
and curves upward behind to join the central rib. Length 345 inch (0°85 millim.). 
This is not very unlike a form described by Prof. Rupert Jones under the specific 
name “ spherulolineata ;” but as in some points it does not agree with the description, 
especially as regards the central tubercle and the “ beaded” character of the ridges, I 
have thought it better to assign it here a new name. Only one or two specimens were 
found in the “ Sables supérieurs.” 
CYTHERE PLICATULA (Reuss). (Plate LXIV. figs. 6a, 66.) 
Cypridina plicatula, Reuss, “ Die fossilen Entomostr.” &c., Haidinger’s Abhandl. 1850, p. 44, pl. x. 
fig. 23, a, b. 
Cythere plicatula, Bosquet, Entom. fossil. des terr. Tertiair. de la France, &c. p. 92, pl. x. fig. 23a, 6. 
? Cythere retifastigiata, Jones, Tertiary Entomostraca, p. 36, pl. 3. fig. 7. 
Cythere plicatula, Egger, op. cit. p. 38, pl. 5. figs. 6, 7, 8; Brady, “On new or imperfectly known 
Species of Marine Ostracoda,” Trans. Zool. Soc. London, 1865, vol. v. p. 374, pl. Ix. fig. La-e. 
Carapace, as seen from the side, oblong, subquadrangular, higher in front than behind ; 
height equal to half the length ; anterior extremity rounded, posterior scarcely rounded, 
and armed below the middle with three or four more or less prominent teeth; dorsal 
and ventral margins nearly straight, the former slightly elevated over the anterior 
hinge-joint. Outline, as seen from above, oblong-ovate. The valves are marked by 
three more or less distinct longitudinal ridges, the rest of the surface being covered 
with rather coarse angular punctations. Length 3’; inch (0°75 millim.). 
C. plicatula has been found in several localities, but is apparently not very common 
in any of them. Dr. Reuss records its occurrence in several localities in Austria, 
Bohemia, and Galicia; Dr. Egger in Germany, and M. Bosquet in the Miocene of the 
South of France, as well as in the “terrain subapennin supérieur de Perpignan.” If 
my identification of it with the C. retifastigiata of Rupert Jones be correct, it has also 
been noticed sparingly in the Suffolk Crag (‘Coralline” Crag) of England. The one 
specimen which I here figure and describe was found in the bed of “ /socardium cor” 
(Sables moyens d’Anvers). The species occurs at the present day living in the Levant 
and Eastern Mediterranean. 
Cyruere cicaTricosa (Reuss). (Plate LXIV. figs. 3 a—3 d.) 
Cypridina cicatricosa, Reuss, Die fossil. Entom. désterreich. Tertiar-Beckens, p. 27, pl. ix. fig. 21 
a, b (1849). 
Cythere cicatricosa, Bosquet, Entom. foss. terr. Tertiair. France, p. 76, pl. iii. fig. 13 (1852) ; Brady, 
Crosskey, and Robertson, Post-tertiary Entom. of Scotland, &ec., p. 151, pl. xiv. figs. 7-10. 
Cythere arborescens, Brady, Ann. & Mag. Nat. Hist. vol. xvi. pl. ix. figs. 5-8 (1865). 
VoL. X.—Part vill. No, 2.—August 1st, 1878. 3G 
