384 DR. G. 8. BRADY ON THE OSTRACODA 
bar which is received into a furrow of the opposite valve; the teeth sometimes cren 1- 
late, and sometimes wanting on the left valve. Antenne robust ; superior 5-6-jointed, 
and bearing on the anterior margin three curved spines ; inferior 4-jointed. Mandibular 
palp 3-4-jointed, bearing in place of a branchial appendage a tuft of sete. Eyes one 
or two’. 
? CYTHERE CRIBROSA, B.,C., & R. (Plate LXIV. figs. 4a, 40.) 
Cythere cribrosa, Brady, Crosskey, and Robertson, Monograph of Post-tert. Entom. of Scotland, &c., 
p. 146, pl. x. figs. 5-7. 
Carapace compressed, oblong, subreniform ; seen from the side, the anterior extremity 
is evenly rounded, the posterior oblique and ending above in an obtuse angle; dorsal 
margin nearly straight, ventral rather deeply sinuated in the middle. Height scarcely 
equal to half the length. ‘The outline, when seen from above, is evenly compressed, 
oblong, nearly of equal diameter throughout, the extremities being rather obtuse. The 
surface of the shell is reticulated, the meshes uniting into obscure longitudinal furrows 
on the ventral surface. Length ~y inch (0°55 millim.). 
Of rare occurrence in the Zrophon- and [socardium-beds. 
CYTHERE WOODIANA, Jones. (Plate LXV. figs. 4a, 46.) 
Cythere woodiana, Jones, Monogr. Tert. Entom. England, p. 29, pl. in. figs. 2a-29. 
Carapace, seen laterally, oblong subquadrangular ; anterior extremity oblique, slightly 
rounded ; posterior scarcely rounded, almost truncate ; superior margin almost straight, 
inferior very slightly convex; height equal to half the length. Seen from above, the 
outline is oblong-ovate, widest behind the middle. The surface is thickly covered 
with large rounded or subangular punctations. Length 3/5 inch (1°3 millim.). 
This is one of the most abundant and characteristic of the Ostracoda of the 
Pliocene Crag of Suffolk (England). Two detached valves have been found in the 
“Sables supérieurs” of Antwerp, Trophon-antiquum bed. The lower or Suffolk 
Crag, in which only the English specimens of C. woodiana have been found, is that 
known as the “Coralline” Crag, though, as stated by Professor Rupert Jones, that 
designation is quite inapplicable, the characteristic fossils of the deposit being not 
Corals or Corallines, but Sponges and Bryozoa (Polyzoa). 
CYTHERE ELLIPSOIDEA, noy. sp. (Plate LXV. figs. 1 a-1d.) 
Carapace, seen from the side, subelliptical ; height equal to more than half the length 
and nearly uniform throughout; extremities rounded; dorsal margin very slightly 
arched, having a slight projection over each hinge-joint fore and aft; ventral margin 
’ In the generic definitions given in this Memoir, I have not thought it desirable to include every anatomical 
detail, but have been content to give only the more important features. 
