48 Gr- O. Sars. 



Ostracoda. 



Fair|. Cyprid.id.ee. 



Gen. Cypria, Zencker. 



21. Cypria pusilla, G. O. Sars, n. sp. 

 (Pl. 7. fig. 1, a— b). 



Specific Characters. — ^ Shell much compressed and, 

 seen laterally, almost semicircular in form, anterior extremity, 

 however, lower than the posterior, dorsal margin boldly 

 arched, ventral nearly straight; seen dorsally narrow oblong, 

 both extremities somewhat blunted. Valves rather unequal, 

 the right one being much the larger, and considerably over- 

 lapping the left in the middle of the dorsal face, as also 

 anteriorly. Surface of shell smooth, but dotted all over 

 with brownish pigment; both extremities clothed with deli- 

 cate hairs. Length of adult female 0,58 mm. 



Remarks. — This form is nearly allied to the European 

 species, C. ophthalmica (Jurine), but of much smaller size, 

 and, moreover, distinguished by the very conspicuous inequal- 

 ity of the valves. 



Description of the female. 



The length of the shell in fully grown specimens does 

 not exceed 0,58 mm., and this form is accordingly of very 

 small size as compared with the European species. 



The shell is highly compressed and, viewed from the 

 side (fig. 1 a), of a somewhat semicircular outline, with the 



