24 S. I. Smith on Brazilian Crustacea. 



the lamellse of its appendages are broadly rounded at their extremities, 

 and the outer ones slightly broader, but scarcely longer, than the 

 inner. The terminal segment of the abdomen is stout, its extremity 

 broad, rounded, ciliate, and has a small movable spine on each side. 



A single, small and somewhat imperfect specimen, also a male, from 

 Caravellas, Province of Bahia, is apparently the young of this species, 

 but presents some differences. The rostrum is armed with fifteen 

 teeth above and three below, and the legs of the second pair are quite 

 short, extending b»it little beyond the first pair, sparsely spinulose, 

 and the hands quite slender. In other respects it agrees closely with 

 the larger specimens. 



The three specimens give the following measurements : — 



Penedo, Sao Francisco. Caravellas. 



Palsemon forceps Edwards. 



Histoire naturelle des Crust, tome ii, p. 397, 1837; Saussure, op. cit., p. 51 ; White, 

 List of Crust, in the British Museiun, p. 78. 



A large number of specimens of this sjjecies was obtained by Prof. 

 Hartt at the mouth of the Para. 



The larger males agree with Edwards' description. The carapax is 

 granulous, especially on the sides. The rostrum is stout, nearly straight, 

 extends slightly beyond the antennal scale, and is armed above with 

 nine or ten, and below with five to seven teeth. The antennal and 

 hepatic spines are stout and of about equal size. The legs of the 

 second pair are very long, cylindrical, the inner and the inferior sides 

 of the merus, carpvis and the basal half of the hand are armed with 

 about four longitudinal lines of slender spines, the upper and outer 



I 



