46g CRUSTACEA. 



Rio Janeiro. 



Length, one and one-fourth inches. The basal scale differs from 

 that of all the other related species in being truncate, and hence 

 rather broader than long; it bears a few longish hairs at extremity. 

 The tarsi are not more hairy than the rest of the legs; they are com- 

 pressed as in the cequabilis. 



ClibanARIUS corallinus? {Edwards), Dana. 



Plate 29, fig. 8 a, part of body, enlarged two diameters; b, front, 

 with basal scales of eyes, much more enlarged; c, right arm and 

 hand, outer view ; d, part of leg of third pair, right side ; e, same, left 

 side. 



Wakes Island, Pacific Ocean, north of the Equator ; also, Feejee 

 Islands. 



The hand in our specimens is very short and thick, and the arm is 

 not half longer than its vertical breadth. The anterior region of the 

 carapax is quite oblong, and the V-shaped suture in its posterior part 

 is not distinct. The eyes are slender and longer than the anterior 

 margin of the carapax. The legs are stiff hirsute on the margins, the 

 hairs nearly or quite as long as the breadth of the fifth joint ; the 

 fifth joint is little compressed; that of the left side third pair is much 

 flattened on outer side, and rough hirsute on this outer surface. In 

 this hirsute surface, the species differs from all the other Clibanarii 

 described. The tarsus is much shorter than the fifth joint, and hir- 

 sute in thick tufts. Colour of alcoholic and dried specimens, deep 

 red. Length, one and a half to two inches. 



The P. corallinus is imperfectly described by Edwards (in the 

 Annales des Sci. Nat., for 1848, 3d ser., v. 63), and it is, therefore, 

 difficult to decide upon the identity of our specimens with his species. 

 The specimens also answer to the description of the P. crassimanus, 

 Edwards, as far as it is given; but in the recent memoir by Edwards, 

 just referred to (p. 62), the crassimanus is removed from the group of 

 the "JEquimanes" and placed among the " Senestres." Owing to the 

 uncertainties, we had named our specimens the obeso-manvs (Proc. 



