THE CANCROID CRABS OF AMERICA 543 



Jamaica: Southeast Cay; P. W. Jarvis; specimens returned to 

 sender. 



Culebra Island: Ensenada Honda; February 9 and 10, 1899; Fish 

 Hatok; 4 males, 1 female (24354). 



St. John Island, Virgin Islands; specimens in Copenhagen Museum. 



St. Croix Island; specimens in Copenhagen Museum. 



Curagao, D. W. I.; Spanish Bay; among stones in the surf; May 11, 

 1920; C. J. van der Horst; 1 male (Amsterdam Museum), 1 ovigerous 

 female (56886). 



Curasao, D. W. I.; 1905; J. Boeke: Rifwater; shallow water; 

 muddy bottom; September 23; 1 male (Leiden Mus.). Bay of 

 Wacao; sandy beach; October 4-5; 1 ovigerous female (Leiden 

 Mus.). 



Colombia: Sabanilla; March 16-22, 1884; Albatross; 10 males, 18 

 females (17824). 



Panama: Colon [Aspinwalll; J. A. McNeil; 1 male, type of 0. integer 

 (4827, M.C.Z.). 



OZIUS PERLATUS Stimpson 



Plate 221, Figures 1 and 2 



Ozius perlatus Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 211 [83] 

 (type-locality, Cape St. Lucas; cotypes in Museum of Comparative Zool- 

 ogy). — A. Milne Edwards, Crust. R6g. Mex., 1880, p. 278, pi. 55, figs. 2-2c. — 

 Boone, Zoologica, 1927, p. 228, text-fig. 84, 



Diagnosis. — Anterior and antero-lateral borders together strongly 

 arched. Inner surface of palm swollen near its proximal end. Other- 

 wise much as in reticulatus. 



Description. — Carapace very broad and depressed. Anterior part 

 of carapace and upper side of chelipeds rugose, the raised portions 

 reticulating, the pits and channels deep, as if eroded. The antero- 

 lateral borders form with the front a curve of a large circle, their 

 outline is entire anteriorly, but posteriorly there is an indication of 

 three teeth. Carapace flat and obscurely granulate posteriorly, 

 anteriorly deflexed, well areolated, the anterior brancliial lobule being 

 circumscribed. Latero-inferior regions granulated. Front depressed 

 and transversely channeled, nearly straight in a view from above, 

 but strongly bidentate at the middle in a front view; teeth obtuse. 

 Basal article of external antennae projecting, being jammed in the 

 inner angle of the orbit. External maxillipeds more or less pubescent; 

 merus rather deeply bisulcate and anteriorly conspicuously notched 

 at the efferent aperture. (Stimpson, A. Milne Edwards.) 



Color. — Dark reddish, (Stimpson.) 



Measurements. — Length of carapace 16.5 mm. [0.65 inch], width 

 28 mm. [1.1 inch] (Stimpson). Female, length of carapace 10, width 

 16 mm. (A. Milne Edwards), 



Range. — Cape St. Lucas, Lower California, Mexico; Panama; 

 Galapagos Islands; Ecuador. 



