Fresh-Water Entomostraca from China and Sumatra. 25 



females. Three different species of the present genus have 

 been reared in my aquaria, one of which has been previ- 

 ously observed. 



4. Hemicypris pyxidata (Moniez). 



(PI. Ill, figs. 1, 1 a— f). 



Cyprinotus pyxidatus, Moniez, « Entomostracés d'eau 

 douce de Sumatra et de Celebes. » II. Ostracoda, p. 134, 

 PI. X, figs. 23—27. 



Specific Characters. — Female. Shell somewhat com- 

 pressed, seen laterally, rounded oval in form, greatest height 

 exceeding f of the length and occurring in the middle, 

 dorsal margin boldly arched, ventral convex in the middle, 

 both extremities evenly rounded; the anterior one slightly 

 broader than the posterior; — seen dorsally, oblong oval in 

 form, greatest width not attaining half the length and oc- 

 curring behind the middle, anterior extremity attenuated 

 and acuminate at the tip, posterior more obtuse. Valves 

 very unequal, the right one much the larger and overlap- 

 ping the left nearly along the whole circumference; surface 

 conspicuously dotted or areolated and rather densely hairy, 

 especially at both extremities. Eye of moderate size. Caudal 

 rami very small, slightly attenuated distally, outer apical 

 claw exceeding half the length of the ramus, dorsal seta 

 more than twice the length of the apical one and occur- 

 ring at some distance from the claws. 



Colour. — Shell rather opaque, of a dark yellow colour, 

 with 3 successive chestnut-brown patches on each side. 



Length of shell 102 ^m height 070 ™"\ width 0-52 »"^\ 



Remarks. — This form was first described and figured, 

 though in a somewhat imperfect manner, by Prof. Moniez 



