118 
CRUSTACEA. 
second tooth from the middle bifid beneath ; mar- 
gin with seven teeth on each side, of which the 
second and fourth are very small, the others large, 
sharp, and nearly equal; color bright vermillion, 
variegated with greenish-blue spots, some single, 
some in clusters, and varying much in shape and 
size, though very symmetrical, as regards the two 
sides of the carapax ; anterior feet very stout and angu- 
lar, the upper surface with many large granulations; 
hand about the length of the carapax, with five 
stout teeth on its upper side, and a basal tubercle ; 
carpus with four teeth, that on the inner angle of 
great size ; arm with four teeth, the terminal one 
greatly dilated at base and flattened ; pincers pro- 
foundly canaliculate; four posterior pairs of feet 
somewhat flattened, and having their two last joints 
more or less profoundly channeled on each side, but 
the last pair with a double channel on the outer 
surface of its three last joints, the first of which has 
a strong spine near the extremity; the natatory 
plate is armed at tip with a small corneous tooth. 
Length of carapax from 2 to more than 2i inches. 
Two specimens, brought from the Sandwich 
Islands by Nuttall and Townsend. 
It seems to be allied to the T. erythrodactyla , 
(Lam.) and probably to the Cancer seriatus, 
(Linn.) 
Genus Podophthalmus, (Lam.) 
P. vigil, (Fabr.) Mus. Acad. 
Brought in considerable numbers from the Sand- 
wich Islands, by Nuttall and Townsend. 
