144 
CRUSTACEA. 
pair of feet equal, nearly as long as the body ros- 
trum inclusive, very slender, more or less tubercu- 
lous, or at least roughened ; the carpus one-third 
longer than the hand, which last is a somewhat 
flattened cylinder, covered with minute tubercles, 
disposed in longitudinal rows, more or less distinct; 
pincers less long than the hand, uniting in their 
basal half, but leaving a slight space between them 
in their apical half. 
Length from tip of rostrum to extremity of caudal 
appendages, about 31 inches. 
Length of second pair of feet nearly three inches. 
Found by J. K. Townsend at the Sandwich 
Islands. 
The following species of Palemon differs from 
the P . jamacenisis in the second pair of feet, which 
are greatly longer than in that species, and more 
spinous; neither does it well agree with the P. La r, 
(Fabr.) which Olivier says has a smooth thorax, 
moreover, the rostrum does not, in the present 
species, attain the extremity of the basal scales of 
the external antennae by one-fourth ; it differs in 
nearly these same respects from the P. longimanus, 
(Fabr.) which has the pincers smooth, according to 
Olivier, (Encyc. Meth.) The P. ornatus has only 
eight or ten teeth on the upper side of the rostrum, 
and the carpus is nearly the length of the palmar 
portion of the hand, and the feet, except the second 
pair, are nearly smooth ; the same is the case with 
the P .forceps, (Edw.) 
The following description will better determine 
its relationship. 
