i 9 i6.] 



Fauna of the Chilka Lake : Cumacea. 



401 



The first and second pairs of peraeopods (text-figs. 4a, b) bear exopods. The 

 former reach beyond the tip of the pseudorostrum by about half their length, the 

 exopod, though longer than in P. longipes, being shorter than the basis. In their pro- 

 portional lengths the segments of the endopod in this limb agree closely with Caiman's 

 figure of P. longipes. The remaining peraeopods (text-figs. 4c-e) are slender. 



The uropods (text-fig. 3/) are long and slender ; the peduncle is very nearly three 

 times the length of the sixth somite and bears from 8 to 12 spines on its inner 

 margin. The exopod (excluding the terminal seta) is as long as the first two seg- 



Cts 



Fig. 5. — Paradiastylis culicoides, sp. nov. d 1 . 

 a. Male in dorsal view. e. First pleopod. 



b. Third rnaxillipede. 



c. First leg. 



d. Abdominal segments and telson in 



lateral view. 



/. Second pleopod. 



g. Telson and uropods. 



h. Telson further enlarged. 



ments of the endopod and is half the length of the peduncle. Of the three seg- 

 ments composing the endopod the first is longer than the two following combined. 

 The first segment bears four short spines on its inner margin and the second two. 



Male. — The male (text-fig. 5 a) is more slender than the female and shows merely 

 the faintest trace [ of the oblique ridge on the carapace. The pseudorostrum is also 

 noticeably shorter and there are fewer teeth (only about ten) on the margin of the 

 carapace behind the insertion of the antennae. The ocular lobe appears to be pro- 



Not shown in text-fig. 5 a. 



