CRUSTACEA.. 
Ill 
Fam. Parthenopiadce. 
Genus Parthenope, (Fabr.) 
P. horrida, (Linn.) Mus. Acad. 
Brought from the Sandwich Islands by J. K. 
Townsend. 
Fam. Cancridce. 
Genus Platypodia, (Bell.) (Cancer, Latr. and 
Edwards.) 
P. granulosa , (Cancer granulosus , Ruppell,) 
different from the P. granulatus, (Cancer granula- 
tus, Audouin.) 
Several specimens, brought from the Sandwich 
Islands, by Mr. Nuttall and J. K. Townsend. The 
four posterior pairs of feet are not quite smooth, but 
somewhat granulated in each specimen ; in other 
respects it agrees with the description of the Can- 
cer granulosus. 
Genus Lagostoma, (Edwards.) 
L. nodosa. Mus. Acad. 
Testa transversa,subconvexa, nodosa, postice sub-depressa, 
lateribus, 5-dentatis; fronte obtusa, vix 4-lobata; pedibus 
anticis, reticulatis, in maribus crassis, tarsis tuberculosis. 
Shell more than one-half broader than long, but 
little convex, and somewhat depressed behind ; an- 
teriorly, and antero-laterally, divided by deep 
