STENHELIA. 35 



2. STENHELIA IMA, Brady. PI. XLIII, figs. 1 14. 



Canthocamptus imus, Brady. Nat. Hist. Trans. Northumberland 

 and Durham, vol. iv, p. 436, pi. xix, figs. 

 15 (1872). 



? restrains, Glaus. Die frei-lebenden Copopoden, 



p. 122, t. xiii, figs. 58 (1863). 



Animal very slender, rostrum slender, long, and fal- 

 ciform ; fourth joint of abdomen the longest. Anterior 

 antennae (fig. 2) very slender, the last four joints 

 much thinner than the rest : third, fifth, sixth, and 

 seventh joints short and nearly equal. In the male the 

 second and fourth joints are much elongated (fig. 3), 

 the latter bearing a stout rod-like appendage (fig. 3 a). 

 Second foot-jaw very slender (fig. 8), the long thin 

 hand having several hair-like spines on the inner 

 margin. First joint of inner branch of first pair of 

 feet very slender and longer than the outer branch, 

 ciliated on both margins and bearing one long 

 apical seta on the inner margin (fig. 9), second joint 

 very short, third more than twice as long as second ; 

 three terminal setae, one of which is much longer than 

 the rest. Both branches of the three following pairs 

 long, slender, and nearly equal ; inner branch of the 

 second pair in the male terminating in two slender 

 spines and a long seta (fig. 10). Inner segment of the 

 fifth foot in the female elongated, narrow, having five 

 or six marginal seta3 ; second joint long and narrow, 

 subovate, six- setose, the two apical hairs much the 

 longest (fig. 12). The fifth feet of the male are very 

 much shorter and proportionately wider (fig. 13). The 



