THE GEAPSOID CRABS OF AMERICA. 231 



Clarion Island, W. of Mexico; Mar. 4, 1889; Albatross; 2 males 

 (16032). 



Taboga Island, Panama: May 12-15, 1911; Meek and Hilde- 

 brand; 1 female, paper-shell (43990). June, 1914; J. Zetek; 1 male 

 (48777). 

 Galapagos Islands: 



Chatham Island; Aug. 16 and 17, 1884; Dr. W. H. Jones, 

 U. S. Navy ; 6 males, 1 female (14365) . Apr. 4, 1888 ; Albatross; 

 8 males, 3 females (22083) ; 2 males, 3 females (20626). Jan. 4, 

 1905; Albatross; 1 male, 1 female (33171). 



Hood Island; Apr. 7, 1888; Albatross; 5 males, 4 females 

 (22086). 



Albemarle Island; Apr. 10, 1888; Albatross; 3 males, 1 

 female, 1 y. (22088). 



James Island; Apr. 11, 1888; Albatross; 6 males, 1 y. (22084). 

 Indefatigable Island; Apr. 12, 1888; Albatross; 2 males, 2 

 females (22085). 



Duncan Island; Apr. 13, 1888; Albatross; 3 males, 3 females 

 (22087). 

 Callao, Peru (?) ; U. S. Expl. Exped.; 1 female (2344). 

 N. end of Callao water front; from rocks in and above the surf; 

 Dec. 27, 1906; R. E. Coker; i^eceived from Peruvian Government; 1 

 female, 2 y. (40436). 



San Lorenzo Island, Peru; Jan., 1884; Dr. W. H. Jones, U. S. 

 Navy; 1 male (13865). 



Chincha Islands, Peru ; July 13 ; R. E. Coker ; received from Peru- 

 vian Government; 1 male (40437). 



MoUendo, Peru ; July 25, 1908 ; R. E. Coker ; received from Peru- 

 vian Government; 1 female (40438). 



Grapsus strigosus (Herbst) is recorded from Loretto, North 

 America, by White (List Crust. Brit. Mus., 1847, p. 40), under the 

 name, Goniopsis strigosus. This is probably Grapsus grapsus. 



Genus GEOGRAPSUS Stimpson. 



Geograpsus Stimpson, Proc. Acad. Nat. Sci. Philadelphia, vol. 10, 1858, p. 



101; type, O. Hridus (Milne Edwards). 

 Orthograpsns Kingsley, Proc. Acad. Nat. Sci. Philadelphia, 1880. p. 194, 



part: O. Jiillii Kingsley=G. lividus (Milne Edwards). 



Differs from Grapsus as follows: 



Carapace more quadrate, the sides being very little arched, and 

 also broader. Lobe at inner lower angle of orbit not so completely 

 isolated. Antennal peduncle less massive. Epistome shorter fore 

 and aft, and less well defined. 



Chelipeds much more massive than the legs; fingers pointed. 

 Thorns of the dactyli of the legs less crowded and less coarse than in 



