G. 0. SARS. 



ish, clouded with green and exhibiting 2 light di agonal bands, 



terior extremity; ova contained in the body bright orange- 



the end of the penultimate joint. Caudal rami narrow and elon- 

 gate, almost straight, (daws slender, very linely denticulate, seta 

 of dorsal edge small, scarcely longer than the apical. Length 

 of adult female 1,50 mm. 



Bernards. - I am by no means sure that my identification 

 of this species is correct. The memoir of King T have un- 

 fortunately not been able to consult, and the specimen de- 

 scribed and figured by Brady under the above name, is evidently 

 not yet full-grown. Besides, this author says that the setae of 

 the lower antennae reach to the extremity of the terminal claws, 

 which is not the case in our species. In the remarkable line- 

 quality of the valves it shows some resemblance to Cy/iris htxatn. 

 described by the same author from Ceylon, but the form of the 

 shell in this species would seem, to judge from the figure given, 

 to be rather different. 



Description. - The shell of the adult female attains a length 

 of 1,50 mm. The measure given by Brady is much less, viz., 

 7-20 of an inch; but, as noted above, the specimens examined by 

 him were undoubtedly far from being full-grown 



Seen laterally (PI. II, fig. 1) the shell exhibits a rather elon- 

 gate, somewhat reniform shape, being however rather narrower 

 anteriorly than posteriorly. The greatest height lies consider- 

 ably behind the middle and does not fully attain the half length. 

 The anterior extremity is obliquely rounded, whereas the posterior 

 is more evenly obtuse The dorsal margin forms a rather uni- 

 form curve declining somewhat more abruptly to the posterior 

 than to the anterior extremity. The ventral margin is distinctly 

 sinuated in front of the middle, but becomes convex in its poste- 

 rior part. Seen from above (fig. 2) the shell appears somewhat 

 inflated in its posterior half, though exhibiting a rather elongate 

 oblong form. The greatest width lies somewhat behind the middle 

 and equals about % of the length. The lateral contours of the 



