Fresh-Water Entomostraca from China and Sumatra. 35 



anterior extremity somewhat narrower than posterior. Valves 

 but sHghtly unequal, smooth and rather densely hairy at 

 both extremities. Caudal rami of the usual structure. 



Colour. — Shell of a light yellowish colour, with a 

 number of dark brown or purplish patches not arranged 

 in distinct transversal bands, each extremity tinged with 

 reddish brown. 



Length of shell 0-63 ™™, height 0-39 n^"^, width 0-40 i"'". 



Remarks. — This form is at once distinguished from 

 any of the other known species of this genus by the pe- 

 culiar and beautiful colour of the shell. It is also of rather 

 large size, as compared with the other species. 



Occurrence. — Numerous specimens of this beautiful 

 species, all of the female sex, developed in some of my 

 aquaria prepared with mud from Sumatra. 



14. Cypridopsis dubia, G. O. Sars, n. sp. 



(PL IV, figs. 5, 5 a— b). 

 Specific Characters. — Female. Shell less tumid than 

 usual, seen laterally, oval in form, greatest height scarcely 

 exceeding | of the length and occurring in the middle, dorsal 

 margin quite evenly arched, ventral almost straight, anterior 

 extremity obliquely rounded, posterior somewhat broader 

 and obtuse at the tip ; — seen dorsally, oblong oval in form, 

 greatest width but slighth^ exceeding half the length, ante- 

 rior extremity somewhat narrower than posterior. Valves 

 slightly unequal, the right one overlapping the left along 

 the anterior extremity by a hyaline rim ; surface smooth, 

 with scattered hairs at each extremity. Caudal rami very 

 small, exhibiting the structure characteristic of the genus. 



