CRUSTACEA NORTH PACIFIC EXPLORIN'G 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 CARDISOMA LatreiUe 



174. CARDISOMA GUANHUMI (Marcgrave) Latreille 



Cancer giianhiiini Marcgrave. 



Cardisoina guanhumi LatreillE, Milne Edwards, Hist. Nat. des Crust., 

 n. 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 Verde 

 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 we find in adult males of C. guanhwni from 

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

 hands is greatly developed in size, with broadly gaping fingers, while 

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

 C. giiaiihuiiii, in which the lateral line is distinct. The wide d-ififer- 

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

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



175. CARDISOMA OBESUM' Dana 



Cardisoina obcsuin Dana, U. S. Expl. Exped., Crust., i, 375, pi. xxiv, fig. i. 

 Cardisoina urvillei Milne Edwards. Melanges 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 



Cardisoina hirtipes Dana, U. S. Expl. Exped., Crust., i, 376, pi. xxiv, 

 fig. 2. 



Color in life reddish-brown ; feet and inferior surface yellow. We 

 can discover no essential dift'erence between the Loo Choo specimen 

 and those described by Dana from 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 equal. 



^Cardisoina carnifcx (Herbst). 



'Cardisoina rotunduin ( Quoy and Gaimard). 



