MONOCULODES ST1MPSONI. 169 



as the extremity of the peduncle of the superior ; the fifth 

 is but little longer than the fourth, and reaches nearly 

 to the extremity of the flagellum of the superior pair ; 

 the flagellum is about the length of the last joint of the 

 peduncle, having the first articulus equal to five of the 

 succeeding, which are subequally short, and scarcely 

 longer than broad. The first pair of legs are moderately 

 large, larger in proportion to the second pair than in 

 M. carinatus ; the wrist is inferiorly produced to a broad 

 plate, reaching nearly to the extremity of the inferior 

 margin, and having its edge fringed with fine hairs ; the 

 hand is longer than the wrist ; the superior margin forms, 

 with that of the wrist, one continuous arcuate line ; the 

 inferior margin lies subparallel with the upper, but the 

 hand is narrower near the wrist than towards the palm ; 

 the palm is convex, armed with two or three rows of short 

 posteriorly-curved hooks, and is defined by a strong spine ; 

 the finger is about the length of the palm, arcuate, and 

 sharply pointed. The second pair of legs have the wrist 

 produced along the inferior margin of the hand to the 

 extremity, where it meets and antagonizes with the 

 apex of the finger ; the hand is longer than that of 

 the first pair of legs, it is narrow near the wrist, and 

 becomes still narrower at the distal extremity, where 

 there is a scarcely -perceptible oblique palm ; the finger 

 is short, and only very slightly curved. The third and 

 fourth pairs of legs have the hand widening towards the 

 distal extremity, the dilated portion taking place anterior 

 to the point where the finger articulates with the hand, 

 and furnished with a copious brush of hair at the extre- 

 mity : the fingers are quite rudimentary. The fourth 

 and fifth pairs of legs resemble each other very closely ; 

 their coxae are shorter than those of the anterior pairs 

 of legs ; their second joints are less enlarged than is 



