2l6 ON COPEPODA AND OTHER CRUSTACEA 



of the fifth pair of feet somewhat different, though the 

 same in general character. Perhaps a more important 

 divergence is in the antennae, which in D. mimical- are similar 

 "to those of Z>. reflexa": these appendages in D. reflexa have 

 a three-jointed secondary branch, while in A. breviremis the 

 branch consists only of a single joint. 



Genus STENHELIA, Boeck. 



Stenhelia meeki, n. sp. (Plate IV., figs. 7-16). 



Female. — Antennules eight-jointed and densely clothed with 

 setae (fig. 7), the first two joints wider than the rest, outer 

 margin of the fourth joint much produced distally, last joint 

 dilated and truncated at the apex, about twice as long as 

 broad, considerably longer than any of the four preceding 

 joints. Secondary branch of the antennae two-jointed (fig. 8) : 

 chewing lobe of the mandible divided into several slender 

 teeth, and at the inner angle bearing several fine hairs (fig. 9). 

 Posterior footjaw somewhat elongated and slender, basal joint 

 with two apical setae; hand oblong-ovate, bearing on the 

 proximal margin several fine short hair.=, and distally two 

 long slender setae; terminal claw long and slender (fig. 11). 

 Outer branch of the first pair of feet (fig. 12) about equal in 

 length to the first joint of the inner branch ; marginal spines 

 very long and slender; the two distal joints of the inner branch 

 very slender, and together equal in length to the first joint : 

 the second, third, and fourth pairs having both branches of 

 nearly equal length (fig.13) ; basal joint of the fifth pair (fig. 14) 

 deeply excavated, the outer lobe elongated, tapering, and 

 bearing a single seta ; inner lobe obliquely truncated, with 

 three or four terminal setae and two marginal spines ; distal 

 joint elongated, subovate, and fringed with about five slender 

 setae. Caudal stylets (fig. 16) nearly thrice as long as broad, 

 with obtuse, subtruncate apices; terminal setae short, and 

 apparently arising from elongated pits in the substance of 

 the furca. 



* Dr. Scott's species is, I think, WTongly referred to Delavalia, in which genus the 

 inner branch of the first foot is only two-jointed. 



