CEUSTAOEA. 



V.-OSTEACODA. 



By G. Stewardson Brady, M.D., LL.D., D.Sc, F.E.S. 



(3 Plates.) 



In the fifty- seven gatherings submitted to me there occurred only nine species of 

 Ostracoda. Of these all except two appear to be hitherto undescribed. The paucity 

 of species is accounted for by the fact that the nettings were made on a very limited 

 number of small areas, many of them practically identical one with another, and 

 differing only as to their various dates. The list of species is as follows : — 



Gonchmcia innominata, sp. n. 



Paraconchmcia gracilis, Clans. 



PsmdoconcJioscia serrulata, Glaus, var. IcRvis, var. nov. 



Cypridina glacialis, sp. n. 



Philomedes orbicularis, sp. n. 



Philomedes assimilis, sp. n. 



Philomedes antarctica, sp. n. 



Xestoleberis reniformis, sp. n. 



Linocheles vagans, g. and sp. n. 



MYODOCOPA. 



CONOHCECIA INNOMINATA. 



(Plate II., figs. 7-14.) 



Shell of the male (fig. 7) seen from the side, subquadrangular, height equal to 

 about half the length and nearly equal throughout ; rostral prominence acutely 

 pointed, with an underlying sinus of moderate depth ; anterior extremity rounded 

 away below, and forming a curve continuous with the ventral margin, posterior abruptly 

 truncated, its lower end boldly rounded off ; dorsal margin nearly straight or only very 

 slightly sinuous, obtusely angular at the posterior extremity, ventral rather boldly 

 and evenly arcuate throughout its whole length. 



The capitulum of the frontal tentacle (figs. 8 and 9) is club-shaped, acutely 

 pointed and slightly hooked at the apex, and in the male bulbously dilated at the base, 

 its inner margin more or less setose ; stem of the antennule in the male (fig. 8) dilated, 



