THE GBAPSOID CRABS OF AMERICA. 



41 



g 











s 







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l 

 1 



Chelipeds granulate; a sharp spine near sum- 

 mit of merus; a blunt tooth on carpus. The 

 coarser granulation of the hand is arranged in 

 longitudinal rows. No large basal tooth on dac- 

 tylus of larger hand. 



Otherwise as in S. carolinensis. 



Measurements. Male holotype, length of 

 carapace 17, width of same 21 mm. 



Range. Pacific and Gulf coasts of Lower 

 California; 23-33 fathoms. 



SPEOCARCINUS OSTREARICOLA Rathban. 



Plnle 10, fig. 1. 



Speocarcinus ostrearicola RATHBUN, Proc. U. S. 

 Nat. Mus., vol. 38, 1910, p. 545, pi. 48, fi. 2 

 Capon), Peru; holotype male, Cat. No. 404G9, 

 (type-locality, oyster beds of Matapalo (near 

 U.S.N.M.). 



Diagnosis. Eyestalks constricted. Antero- 

 lateral teeth four, well-marked. Chelipeds 

 nearly smooth. 



Description. Body and legs coarsely hairy; 

 carapace very broad, coarsely granulate; re- 

 gions fairly well marked. Antero-lateral mar- 

 gin cut by broad V-shaped notches into four 

 well-marked teeth. Front one-fourth as wide 

 as carapace, having a deep median furrow; 

 edge bilobed, lobes arcuate. Eyestalks distally 

 slender, corneae somewhat enlarged. 



Chelipeds unequal, broad, nearly smooth; a 

 tooth on upper edge of arm and inner edge of 

 wrist; palm high, upper margin granulate; fin- 

 gers narrowly gaping, inner margins irregu- 

 larly dentate; upper margin of dactylus granu- 

 late, immovable finger with a raised, granulate 

 ridge just above lower edge. 



Measurements. Male holotype, length of 

 carapace 12, width of same 17.6 mm. 



Range. Known only from the type-speci- 

 men, from the oyster beds of Matapalo (near 

 Capon), Peru; Jan. 23, 1908; R. E. Coker; 

 1 male, received from the Peruvian Government 

 (404G9). 



