THE CANCROID CRABS OF AMERICA 111 



URUGUAY.— F. Felippone: Cape Polonio, Rocha; 1 male (61369), 

 right cheliped malformed. Twenty miles off Punta del Este; 1923; 

 1 male (57566). 



CALLINECTES SAPIDUS ACUTIDENS Rathbun 



Plate 48 



CalUnecies sapidiis acutidens Rathbun, Proc. U. S. Nat. Miis., vol. 17, 1895 

 (1896), p. 354, pi. 13; pi. 24, fig. 2 (type-locality, Santa Cruz, Brazil; type, 

 Cat. No. 4696, M. C. Z.); Bull. U. S. Fish Comm. for 1900, vol. 2, 1901, 

 p. 47. 



Diagnosis. — Teeth of carapace acuminate, spiniform. A pair of 

 small median frontal teeth. 



Description. — Carapace wider, prominences more strongly marked 

 than in typical sapidus. Areolations separated by deeper depressions, 

 granules more raised, gastric carinae stronger and more sinuous. 

 There is also a transverse granulate ridge on each cardiac lobe. 

 Frontal teeth narrower and more acute, and there are also two small 

 intermediate teeth. Subfrontal and suborbital spines acuminate. 

 Lateral teeth of carapace broad at base, narrowed abruptly to long, 

 acuminate tips, margins granulate; seventh and eighth teeth very 

 long, adding to the effect of width and making the antero-lateral 

 margin less arcuate. Costae of cheliped very prominent and strongly 

 granulate; two spines on carpus, one at outer angle and a shorter one 

 close to the propodal spine. 



Measurements. — Type male, total length of carapace 50.8, length to 

 median sinus of front 49, width of carapace 121, length of lateral 

 spine 16, of preceding tooth 5 mm. Male (43921), total length of 

 carapace 67, width of same 148.6, width at anterior base of lateral 

 spine 122, fronto-orbital width 55, width of front 16.4 mm. 



Range. — From the east coast of Florida to Rio de Janeiro, Brazil. 

 This is the tropical form of C. sapidus, which prevails in both the 

 north and south temperate zones. 



Material examined. — 



FLORIDA.— St. Johns River, Palatka; January 25, 1897; W. C. 

 Kendall, U. S. Fish Commission; 1 male (22276). 



LOUISIANA.— Lake Palourde, Morgan City; April 21, 1897; H. 

 R. Center, U. S. Fish Commission; 2 males (22275). 



PORTO RICO.— 1899; FisTiHawJc: Arroyo; February 4; 1 young 

 male (24469). Mayaguez Harbor; Custom House, E. by S., 2 miles; 

 7 fathoms; stky. M; temperature 27° C; station 6059; 1 female 

 (24470). 



PANAMA.— Canal Zone; 1911; Meek and Hildebrand, Smithso- 

 nian Biological Survey: Toro Point: April 12, 1 male (43922), 1 male 

 (Field Mus.); May 20, 1 female (43920). Fox Bay, Colon: January 

 20, 1 immature male (Field Mus.); January 27, 2 males (1 soft 

 shell), (59290). French Canal, Mindi, January 19, 1 immature 



