STENHELIA. og 
2. Stennenia ima, Brady. Pl. XLII, figs. 1—14. 
Canthocamptus imus, Brady. Nat. Hist. Trans. Northumberland 
and Durham, vol. iv, p. 436, pl. xix, figs. 
1—5 (1872). 
P — rostratus, Claus. Die frei-lebenden Copopoden, 
p. 122, t. xin, figs. 5—8 (1863). 
Animal very slender, rostrum slender, long, and fal- 
ciform ; fourth joint of abdomen the longest. Anterior 
antenne (fig. 2) very slender, the last four joints 
much thinner than the rest: third, fifth, sixth, and 
seventh joimts 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 joimt of mner 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 setze, 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 setz; 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 
