112 
CRUSTACEA. 
grooves into great tubercles, the posterior ones 
being flattened above ; front very obtuse, sinuous, 
properly speaking, two-lobed, the lobes being a little 
produced toward the outer angle ; median fissure 
tolerably well marked ; orbits surrounded with tu- 
bercles, having about three above and two beneath ; 
margin with about five great obtuse teeth on each 
side, of which the posterior pair is smallest; most 
of these teeth are dilated on each side at base, 
forming small tubercles, very distinct when viewed 
from beneath ; anterior feet very stout in the male ; 
hand and wrist somewhat reticulate with irregular 
elevated lines ; four posterior pairs of feet a little 
rough on their superior edge, the roughness in- 
creasing in the direction of the tarsi, which are 
studded with small tubercles ; the third joint of the 
outer maxillary feet, has an anterior inner notch, 
less large than the anterior one. 
A single male specimen, brought by Mr. Nuttall 
from the Sandwich Islands ; its length is 1 T V inch, 
breadth fully 1 A inches. 
A small species, nearly allied to the present, and, 
perhaps, a young specimen of it, has been brought 
by Dr. Morton from the West Indies; no spines ex- 
ist on the feet of either. 
This species has a striking resemblance to the 
Cancer inequctlis ? of Olivier, as figured by Sa- 
vigni in the great work on Egypt, but Olivier says 
that the hands of the anterior feet in his species are 
smooth. The C. inequalis is probably another 
species of the same genus. 
