THE CANCROID CRABS OF AMERICA 433 



Range. — From Alabama in the Gulf of Mexico to St. Thomas, 

 Virgin Islands. 



Material examined. — See table, pages 434-435 



MICROPANOPE LATIMANUS Stimpson 



Micropanope latimana Stimpson, Ann. Lye. Nat. Hist. New York, vol. 10, 1871, 

 p. 107 [17] (type-locality. Cape St. Lucas; type not extant). — A. Milne 

 Edwards, Crust. R6g. Mex., 1880, p. 329.5' 



Xanthodes latimanus Lockington, Proc. Calif. Acad. Sci., vol. 7, 1876 (1877), 

 p. 31 [4] (type-locality, San Diego; type not extant). 



Xantho latimanus Lockington, Proc. Calif. Acad. Sci., vol. 7, 1876 (1877), 

 p. 101 [7]. 



? Xanthodes ? angustus Lockington, Proc. Calif. Acad. Sci., vol. 7, 1876 (1877), 

 p. 100 [6] (type-localities, Magdalena Bay, L. Cal.; Mulege Bay, Port 

 Escondido and San Jose Island, Gulf of Cal.; types not extant). 



Diagnosis. — Margin of frontal lobes straight. Palms broader than 

 long. Black of propodal finger continued one-third the way along 

 palm. 



Description (after Stimpson). — Carapace moderately convex, naked, 

 smooth and polished, except toward the anterior and antero-lateral 

 margins, where it is somewhat granulated. Front rather broad and 

 little projecting, lobes with straight margins. Subhepatic region 

 minutely granulated. Chelipeds large and angular; palms broader 

 than long, smooth and polished, strongly protuberant at the postero- 

 inferior angle; fingers nearly as long as palm, deflexed and black, 

 the black of the propodal finger extending on the palm for one-third 

 its length. Chelae unequal, the fingers of the smaller one longer and 

 more deflexed than those of the greater one, which gives the hand a 

 more angular form and a deeply concave inferior outUne. Ambula- 

 tory feet slender, smooth and sparsely hairy. 



Measurements. — Male type, length of carapace 7.1 mm, (0.28 inch), 

 width of same 9.7 mm. (0.38 inch). 



Range. — San Diego, California, to Cape St. Lucas, Lower Cali- 

 fornia, Mexico. 



MICROPANOPE TRUNCATIFRONS Rathbun 



Plate 178, Figures 7 and 8 



Micropanope truncalifrons Rathbun, Bull. Lab. Nat. Hist. State Univ. Iowa, 

 vol. 4, 1898, p. 274, pi. 4, fig. 2 (type-locality, off Havana, 194 fathoms, sta- 

 tion 2326, Albatross; type, Cat. No. 9497, U.S.N. M.). 



Diagnosis. — Carapace and chelipeds coarsely granulate. Frontal 

 lobes truncate, transverse. Five lateral teeth. No subhepatic 

 tubercle. Legs slender. 



Description. — Carapace moderately convex, antero-lateral teeth 

 horizontal. Surface granulate, granules large and conspicuous ante- 

 riorly, diminishing toward posterior margin. Regions well defined; 



" A. Milne Edwards suggests the possibility of this species being equivalent to Olyptoplax pugnax Smith. 

 79856—30 29 



