136 
CRUSTACEA.. 
than in the preceding, and the anterior feet granu- 
lar ; right hands with a sharp dentate crest on the 
upper side. Color bluish or reddish, the feet in 
some banded alternately with blue and red. 
Genus Cenobita. (Latr.) 
G. Diogenes. (Auctorum.) Mus. Acad. 
A specimen of this species was brought by Mr. 
Nuttall, supposed to have been found at the Sand- 
wich Islands. 
Fam. Porcellaniadce. 
Genus Porcellana, (Lam.) 
P. cinctipes. Mus. Acad. 
Testa polita, antice Ieviter granulata, postice leviter 
striata; fronte canaliculata, pedum pare antico granulato, 
carpis unispinosis ; reliquis albo-i'asciatis. 
Shell obtusely hexagonal, about as long as broad, 
exclusive of the front, which is triangular, promi- 
nent, profoundly canaliculate, and presenting on 
each side at base the germ of a dentiform lobe ; 
carapax punctured in the middle, granular anteri- 
orly, and striate on each side posteriorly , sides sur- 
rounded by a very prominent crest ; color reddish- 
brown anteriorly, blue postero-laterally ; anterior 
feet granular above, smooth, and highly polished 
underneath, carpus with a prominent ridge near 
the outer edge, terminating in a tooth ; inner extre- 
mity only a little crenate ; hands triangular, outer 
edge sharp ; three posterior pairs of feet flattened, 
their color blue, fasciate with white. 
