. Bulletin - United States National Museum. Science. THE CANCROID CRABS OF AMERICA 69 Range.—Revilla Gigedo Islands, Mexico, and Cocos Island, Central America. Material examined.—San Benedicto Island, Revilla Gigedo Islands; A. W. Anthony; 3 males, 2 females (20696). Off Cocos Island; lat. 5° 32' 45" N., long. 86° 54' 30" W.; 66 fathoms; rky.; temperatm-e ° F.; February 28, 1880; station 3368, Albatross; 1 male cotype (20608), 1 male cotype (4488, M. C. Z.). PORTUNUS (ACHELOUS) STANFORDI Rathbun Plate 31 Porlunus (Achelous) brevimanus Rathbun, Proc. U. S. Nat. Mus., vol. 21, 1898
. Bulletin - United States National Museum. Science. THE CANCROID CRABS OF AMERICA 69 Range.—Revilla Gigedo Islands, Mexico, and Cocos Island, Central America. Material examined.—San Benedicto Island, Revilla Gigedo Islands; A. W. Anthony; 3 males, 2 females (20696). Off Cocos Island; lat. 5° 32' 45" N., long. 86° 54' 30" W.; 66 fathoms; rky.; temperatm-e ° F.; February 28, 1880; station 3368, Albatross; 1 male cotype (20608), 1 male cotype (4488, M. C. Z.). PORTUNUS (ACHELOUS) STANFORDI Rathbun Plate 31 Porlunus (Achelous) brevimanus Rathbun, Proc. U. S. Nat. Mus., vol. 21, 1898, p. 593; vol. 38, 1910, p. 578 (part; the Galapagos specimens). Porlunus (Achelous) stanfordi Rathbun, Proc. Washington Acad. Sci., vol. 4, 1902, p. 282, pi. 12, fig. 11 (type-locality, Tagus Cove, Albemarle Island; type. Cat. No. 24833, U. ). Diagnosis.—Carapace lumpy in the middle. Five inner arm spines. No ter- minal spine on manus. A spine at postero-distal angle of merus of last leg. Description.—Near hre?n- manus, with which it is eas- ily confused when of good size. The configuration of front, orbits and antero- lateral teeth is similar, but the lateral spine is trans- verse, scarcely curved forward. Pubescence of carapace shorter and more fugitive, postero-median area more lumpy, with three large bosses in a triangle at inner angle of branchial region, and on the car- diac region two bosses and in the very young a third, median. Arms with five spines, sometimes six, on inner margin and one at extremity of outer margin. Inner spine of carpus longer than any other cheliped spine but about half as long as the same spine in hrevimanus. Manus without terminal spine above, subterminal spine near the extremity, about at the distal fifth; carina below the superior carina less parallel to the latter than in hrevimanus, approaching nearer the top in the proximal half. Merus of swimming leg half again as long as broad, a single spine at postero-distal angle. Term
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