6 PROCEEDINGS OF THE CALIFORNIA 



No. 33. Monterey. Dried. -T. G. Cooper. 



Xantho HemphilUana. Lockiugton, Proc. Cixl. Acad. Sci., Feb. 7tli, 187G. 



Tlie only specimen I li;tve seen of this species is the one in the possession 

 of the Academy of Sciences, San Francisco. Some small crabs from the 

 Gulf of California, which I at first believed to be young specimens of this 

 form, differ in their less transverse form and more perfect areolation, and I 

 now think them distinct, yet this can only be proved by the examination of 

 a complete series of the Monterey form. 



No. 35. Large male, dried. Monterey. Hy. Hemphill. 



Xanthodes leucomanus. Lockington, Proc. Cal. Acad. Sci., Feb. 7th, 187G. 



Oarajjax rather narrow; areolation very distinct, cardiac region circum- 

 scribed; three antero-lateral teeth (the three posterior ones) usually distinct, 

 and directed laterally, the space usually occupied by the first two antero-lat- 

 eral teeth forming an almost straight line. Basal joint of outer antennje 

 reaching the front; lower margin of orbit two-lobed; inner hiatus wide; front 

 sinuate, a process meeting the basal joint of the external antennae. Internal 

 antenna3 stout. Chelipeds sub-equal, manus broadly ovate, stouter than the 

 carpus, smooth, shining, with a slightly raised upper edge; dactylus and pol- 

 lex alike, short and stout, conical, toothed inside; furrowed. Carpus often 

 with a roughened upper surface. Ambulatory feet almost free from setie, but 

 the dactyli thickly covered with very short tomentosity. 



d & 



M. M. M. M. 



Length of carapax 9 8 



Width of carapax 11 9.5 



Numerous speciuieiis of Ibis speci-'s wck^ brought from Lji Paz, Port Es- 

 condido and Mwlege Bay, Gulf of Culifornia, bv W. .T. Fisher. They show 

 great variation in color, areolation, and othe)' <:h:ir(iclers. In some the poste- 

 rior i?ortiou of the carapax is much less distinctly areolated tban in others; 

 many individuals have the upper surface of the carpus, and even that of the 

 manus, more or less rugose; some have black fingers with white tijis, others 

 have colored fingers, and the general tint of the carapax varies considerably. 

 The original specimens from which my previous short description of this spe- 

 cies was written, were lost in removing our collection, and I cannot, there- 

 fore, feel certain of the identity of the Gulf form with the one first described. 



Xanthodes? aji<;iistus. nov. sp. 



Carapax narrow, front wide, slightly sinuate; antero-lateral margin shorter 

 than postero-lateral, three-toothed; teeth pointed forwards; the posterior 

 margin of the hindermost teeth in a line with the postero-lateral margin. 

 Upper margin of the orbit two-lobed, excluding the post-orbital, which is low(n' 

 than the two succeeding antero-lateral teeth. Upper surface of the carapax 

 smooth, shining, without areolation, except in the frontal region, and near the 

 antero-lateral teeth. Chelipeds smooth, shining, without areolation, hairs or 

 tubercles, hands rather broad, equal in size, fingers of right hand tuberculate 



