THE CANCROID CRABS OF AMERICA 313 



XANTHODIUS HEBES Stimpson 



Plate 147 



Xanthodius hebes Stjmpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 208 



[80] (type-locality. Cape St. Lucas; cotypes in M.C.Z.). 

 Adeodes mexicanus Lockington, Proc. California Acad. Sci., vol. 7, 1876 (1877), 



p. 42 [2] (tj^pe-locality, Mazatlan; type not extant). 

 Adoeodes mexicanus Lockington, Proc. California Acad. Sci., vol. 7, 1876 (1877), 



p. 103 [9]. 

 Leptodius hebes A. Milne Edwards, Crust. R6g. Mex., 1880, p. 273. 



Diagnosis. — Carapace about one and a half times as wide as long; 

 antero-lateral margin thick. Edge of front invisible in dorsal view. 



Description. — Carapace narrower than in sternhergTiii, moderately 

 areolated; surface conspicuously punctate. Antero-lateral margin 

 thick, obtusely rounded, obscurely quadrilobate, the last lobe having 

 a short subacute point. Front defiexed, edge not visible in dorsal 

 view, lobes oblique, deeply sinuous, median notch shallow, a short 

 furrow leading back from it. Outer angle of orbit not raised. Sub- 

 orbital and subhepatic region deeply punctate or finely vermiculate. 

 Chelipeds rather short and stout, rugulose above and externally. 

 Abdomen of male wider than in sternhergliii. 



Color. — Ranges from dark reddish brown, sometimes tinged with 

 green, to almost white, and in some cases even the fingers are whitish 

 (Lockington). 



Measurements. — Male (50485), length of carapace 18.6, width of 

 same 31, fron to-orbital width 12.3, front 7.5 mm. 



Range. — West coast of Mexico from Magdalena Bay on the ocean 

 side, and Mulege Bay on the gulf side of Lower CaUfomia southward 

 to Maria Madre Island. 



Material examined. — Mexico: Magdalena Bay: 1917; C. R. Orcutt; 

 4 males, 3 females (50634). Shore; Hanna and Jordan, California 

 Acad. Sci.; 1 male, 1 female returned; 1 male, 1 female (62711). 



Cape St. Lucas; J. Xantus; 5 males, 5 females (1 ovigerous), 

 cotypes (1252, M.C.Z.). 



La Paz; May 2, 1921; L. S. Rubio; 1 male (Amer. Mus.). 



Pichihnque Bay; March 27, 1911; Albatross; 8 males, 8 females 

 (50485). 



Espiritu Santo, Balandra Bay, near Point Diablo; L. Belding; 1 

 male (6377). 



Agua Verde Bay; April 1, 1911; Albatross; 1 male, 4 females (1 

 ovigerous) (50486). 



Maria Madre Island; March-May, 1927; from Secretaria de Agri- 

 cultura y Fomento, through A. L. Herrera; 1 young male (60831). 



Maria Magdalena Island; shore; Hanna and Jordan, California 

 Acad. Sci.; 1 male (62712); 1 female, returned. 



