119 



hang suspended from a tree for more than an hour, holding on to a 

 stick which had been thrust between their claws. The wonderful stories 

 about these crabs climbing the trees after cocoauuts are purely fictitious. 

 They eat the nuts after they have fallen to the ground, first stripping 

 off the husk, and then breaking through the shell at the end containing 

 the eyes. 



CRANGONID^. 



CRANGOX FRANCISCORUM, Stimp. 



Crangon franciscoruvi, Stimpson, Proc. California Acad. Nat. Sci., 185G, i, 89 ; Jonr. 



Boston Soc. Nat. Hist., 1857, vi, 495, pi. 22, f. 5 ; Crust, and Echin. Pacific 

 coast of N. Amer., 55. 



Locality: San Francisco Bay, California. 



PALiEMONIDiE. 



HIPPOLYTE GIBBOSUS, M. Edw. 



Eqypolyte gilbosiis, M. Edwards, Hist. Nat. des Crust., ii, 378. — Dana, U. S. Espl. Exped. 

 Crust., i, 565, pi. 36, f. 4.— Heller, Crust. Novara Exped., 120. 



Locality: Hawaiian Islands. 



There are seven teeth along the under margin of the rostrum, instead 

 of six, which is the number given by Dana. 



PAL^MON ACUTIROSTEIS, Dana. 



Palcemon acutirostris, Dana, U. S. Expl. Exped. Crust., i, 590, pi. 39, f. 1. 

 Locality : Hawaiian Island. 



SEEGESTID^. 



SERGESTES MACROPHTHALMUS, Stimj). 

 Sergeates macrophthalnms, Stimpson, Proc. Acad. Nat. Sci. Phila., 1860, xii, 46. 



Locality : North Pacific Ocean. 



There is no doubt about the identity of this species. It is very easily 

 identified by the arrangement of the spines on the cephalothorax and 

 abdomen. In addition to the supra-orbital and hepatic spines, there is 

 one on the middle of the dorsal surface of the carapace, at its posterior 

 extremity ; this spine is small and erect. There is an oblique spine on 

 the posterior dorsal extremity of the fourth, and of the fifth abdominal 

 segments ; that on the fourth is the larger. No other species of this 

 genus i)resents this peculiar arrangement of dorsal spines. But Stimp- 



