ENTOMOSTEACA COLLECTED IN XATAL. 1 75 



Shell seen from the side obi on o-, subovate, nearly twice as 

 long as high (fig. 6), greatest height in the middle^, anterior 

 extremity rounded off gently above but somewhat abruptly 

 below, posterior evenly rounded, dorsal margin well and 

 evenly arched, ventral slightly protuberant in the middle, 

 otherwise almost straight. Seen from above, the outline is 

 ovate, more than twice as long as broad, widest in the middle, 

 much compressed, posterior extremities rounded off, anterior 

 scarcely rounded, subacuminate (fig. 7), colour more or less 

 brown, surface smooth. Length, l"! mm. Swimming setae, 

 as usual in this genus, reaching very far beyond the ex- 

 tremity of the antennal claws (fig. 8) ; caudal rami very stout 

 (fig. 11), their terminal claws stout and moderately curved, 

 mai'ginal seta long", attached a little beyond the middle of the 

 limb. 



H ab . — Pietermai-itzburg. 



These specimens agree in all respects with those described 

 by Dr. G. W. Miiller from Madagascar. 



Genus Cypridopsis Brady. 

 Cypridopsis punctillata n. sp. PI. XXXI, figs. 7-15. 



Shell seen from the side oblong, reniform, greatest height 

 situated in the middle and equal to rather more than half 

 the length (fig. 7), extremities evenly rounded, the anterior 

 rather the broader of the two, dorsal margin very boldly 

 arched, sloping gently toward the front, steeply arcuate 

 behind, ventral margin distinctly sinuated in the middle ; 

 seen dorsally the outline is ovate, about twice as long as 

 broad (fig. 8), tapering toward the front, which is bluntly 

 pointed, wider and almost subtruncated behind. Sui'face 

 smooth, marked uniformly with very small, impressed puncta- 

 tions (fig. 11). Antero-veutral angle of the left (and in 

 some cases also of the right) valve very minutely denticu- 

 lated, and fringed with slender hairs (fig. 9), colour greenish. 

 Length 0"57 mm. Swimming seta3 of the posterior antenn;e 



VOL. 1, PART 2. 13 



