CRUSTACEA NORTH PACIFIC EXPLORING EXPEDITION III 



It is distinguished from O. cordimana by the projecting orbital 

 angles and by the smoothness of the edges of the hands. 

 Taken at Hilo, Island of Hawaii. 



GECARCIXID^ 



Genus CARDISO^IA Latreille 

 174. CARDISOMA GUANHUMI (Marcgrave) Latreille 



Cancer guanhumi Marcgrave. 



Cardisoma guanhumi Latreille, Milxe Edwards, Hist. Nat. des Crust., 

 11, 24; Illust. Cuv. R. A., Crust., pi. xx; Mel. Carcin, p. 170. 



A male individual, probably of this species, was found in its hole 

 in a cocoanut grove near the town of Porto Praya, Cape de A'erde 

 Islands. In this specimen the carapax is exceedingly smooth, both 

 above and at the sides, and the antero-lateral line can scarcely be 

 traced; these characters w^e find in adult males of C. guanhnini from 

 the American shores. But in these western specimens one of the 

 hands i.s greatly developed in size, with broadly gaping fingers, while 

 in the expedition specimen the hands resemble those of the young of 

 C. guanhumi, in which the lateral line is distinct. The wide dififer- 

 ence in locality would lead us to consider the species dififerent, but 

 we do not venture to separate it without seeing additional examples. 



175. CARDISOMA OBESUM^ Dana 



Cardis(nna obcsitiii Daxa, U. S. F,xi)1. Kxped., Crust., i, ;^7^. pi. xxiv, fig. I. 

 Cardisoma urvillci Milne Edwards, ?*Tt-langes Carcinologiques, p. 170. 



This species was found living in holes in the gardens and along 

 the streets in great numbers at Papiete, Island of Tahiti. 



176. CARDISOMA HIRTIPES' Dana 



Cardisoma hirli/^cs Daxa, L'. S. F.xpl. Expcd., Crust., i. ^76, pi. xxiv, 

 i']g. 2. 



Color in life reddish-hn iwn : frel and interior surface yellow. We 

 can discover no essential difi'erencc between the Loo Choo specimen 

 and those described by Dana fn^m the Fiji Islands, with the single 

 exception that in ours, which is a male, the left hand is much larger 

 than the right, while in Dana's the hands are e(|ual. 



^Cardisoma carnifcx (llcrbst). 



"Cardisoma roliiiidum (Quny .'iiid Gaiinard). 



