166 GAMMARIDjE. 



of the animal ; and have the last joint of the peduncle 

 as long again as the preceding, and rather longer than 

 the flagellum. The foot-jaws are tolerably robust, and 

 terminate in a triangular hand, the broadest part being 

 near the finger, where it forms a kind of palm, against 

 which the finger, which is extremely curved, is capable 

 of impinging. The first pair of legs are not very long, 

 they have the metacarpus produced inferiorly to a sharp 

 point ; and the wrist is considerably produced anteriorly, 

 in the form of a plate, corresponding to the inferior 

 margin of the hand ; the hand is oval, having a convex 

 palm obliquely placed, and defined by a solitary, short, 

 obtuse spine, it is armed throughout its length with a 

 number of short posteriorly-directed hook-like spines, 

 which are flanked by several bunches of straight, un- 

 even, lengthened hairs ; the finger is curved, sharp, and 

 free from any armature. The second pair of legs are 

 longer than the first, but are constructed upon the same 

 type ; the wrist is anteriorly produced to a much greater 

 length ; the hand is long and narrow, being nearly four 

 times as long as broad ; the palm is short, slightly ob- 

 lique, fringed with short, and a few long cilia, and 

 defined by an obtuse rounded angle, beyond which the 

 anterior extremity of the carpus advances ; the finger is 

 short, curved, clean, and sharp. The coxae of the five 

 anterior pairs of legs are as deep as the corresponding 

 segments of the body. The third and fourth pairs of 

 legs are formed upon the same type, and closely re- 

 semble each other, and are remarkable for having the 

 hands dilated upon the backs, where they are furnished 

 with a thick brush of hair, a peculiarity which appears 

 to belong to this genus. The fifth pair of legs are much 

 longer than the two preceding pairs, they have the coxa 

 two-lobed, and as deep as the coxa of the preceding legs; 



