I0i6. 



Faiiiui of flie CliUka Lake : Cumacea. 



40T 



The first and second pairs of peraeopods (text-figs. 4(1', />) bear exopods. The 

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

 exopod, though longer thin in P. longipes, biing 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. loiigipes. 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- 



FiG. 5. — I'nriidi<i»lylis ciilicnidcs, sp. tiov. S . 



a. Male in dorsal vic-w. e. First pleopod 



b. Third maxillipede. 

 (■. Fir.st leg. 

 tl. Abdominal segments and telson in 



lateral view. 



/. Second pleopod. 



;'. Telson and uropods. 



//. Telson fnrthcr c-nlarge<l. 



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. 5^0 is more slender than the female and slrows merely 

 the faintest trace ' of the oblique ridge on the carapace. The pseudorostruni 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 .sliowu ill text-fig. f,ii. 



