THE GEAPSOID CRABS OF AMERICA. 359 



Material examined. — 



Corinto, Nicaragua (M. C. Z.). 



Acapulco, Mexico ; Hassler Exped. ; reed, from Mus. Comp. Zool. ; 

 3 males, 3 females (22819). 



Mouth of Rio Jesus Maria, Costa Rica ; April 22, 1905 ; P. Biolley 

 and J. F. Tristan; 1 male (32311). 



Pigres, Costa Rica; A. Zeledon; 1 female (46683). 



Punta Arenas, Costa Rica; 2 males (Copenhagen Mus.). 



Naios Id., Panama ; G. M. Gray; 1 female (42141). . 



Turbo, Colombia (M. C. Z.). 



b 



FlO. 162. GECAttCINnS QUADRATUS, MALE, X 2. O, OUTER MAXILLIPEDS, IN PLACE, OF 



SPECIMEN IN COPENHAGEN MOS. ; 6, ABDOMEN (32311). 



GECARCINUS PLANATUS Stimpson. 



Plates 123 and 124. 



Gecarcinus planatus Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1S60, 

 p. 234 (type-locality, Todos Santos, near Cape St. Lucas; type not 

 extant).— BoTTviKR, Bull. Mus. Hist. Nat. Paris, vol. 4, 189S. p. 372. 



Oecarcinus malpilcnsis Faxon, Bull. Mus. Coinp. Zool., vol. 24, 1893, p. 157 

 (type-locality, Malpelo Island; type. Cat. No. 4492, Mus. Comp. Zool.) ; 

 Mem. Mus. Comp. Zocil., vol. 18, 1895, p. 28, pi. 4, figs. 2-2b. 



Oecarcinus digneti Boxivier, Bull. Mus. Hist. Nat. Paris, 1895, No. 1, p. 8 

 (type-locality. Lower California; type in Paris Mus.). — Rathbun, 

 Nortli American Fauna, U. S. Department of Agriculture, No. 14, 1S99, 

 p. 73. 



Diagnosis. — Large. Maxillipeds do not reach epistome; merus ob- 

 long, notched at extremity. Chelipeds unequal. Dactyli of legs with 

 six rows of spines. 



Descript'(on. — Of large size. Carapace narrower than in G. run- 

 cola^ flattened in the center and posteriorly. Outer gastric furrows 

 obsolete anteriorly, a pit near the orbital angle ; median furrow broad 



