128 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



little arched, teeth triangular, margins denticulate, the second to 

 seventh inclusive with anterior margins partly concave, or in the case 

 of the first few, sometimes straight; posterior margins a little wider 

 than anterior, tips acute; eighth tooth narrow, spiniform; in general 

 the teeth, after the fourth, are progressively longer and sharper. 

 Lateral spine from 2^ to 3 times as long as preceding tooth. Costae 

 of manus coarsely and rather sparingly granulate. Sternum flat. 

 Penultimate segment of male abdomen constricted in its proximal 

 half, appendages reaching almost to end of abdomen. 



Measurements. — Male (43916), largest male known, total length of 

 carapace 91.3, width of same 196, width at anterior base of lateral 

 spine 157.2, fronto-orbital width 63.2, width of front 21.5 mm. This 

 old male has sharper marginal teeth than the tj^pical form, with the 

 exception of the outer right frontal tooth which is broad and bifid at 

 tip. 



Range. — From Cape San Lucas, Mexico, to Jyan Fernandez Islands, 

 Chile. 



Material examined. — 



MEXICO. — Cape San Lucas, Lower California; John Xantus; 1 

 male cotype (2413), 2 males, 5182, and 1 male, 5183, cotypes (M. C. 

 Z.). Acapulco; Hassler Expedition; 2 males, 1 female (18507), 

 received from Museum of Comparative Zoology. 



COSTA RICA. — Boca Jesus Maria; J. Fid. Tristan; specimen re- 

 turned to sender. Santo Domingo, Gulf of Dolce; April, 1896; H. 

 Pittier; 1 young male, 1 young female (19438). 



PANAMA. — Meek and Hildebrand, Smithsonian Biological Survey : 

 Chame Point; February 14, 1912; 1 male, soft shell (59291). Rio 

 Chorrera, Chorrera; April 3, 1911; 1 male (43916). Corozal, Canal 

 Zone; April 20 and 21, 1911; 1 male (43917), 2 males (Field Mus.). 



ECUADOR.— W. L. Schmitt: Salada, Guayaquil; September 30; 

 1 male (61429). Purchased inmarket, "Mercado del Sur," Guayaquil; 

 September 21 and 22; 3 males, 8 females (61006). Guayaquil; Prof. 

 James Orton; 1 male (P. M. Y. U.). Punta Salinas; 3 males, 1 female 

 (61008). 



PERU.— Mouth of River Tumbes; January 15, 1908; R. E. Coker; 

 1 male (40443), gift of Peruvian Government. 



CHILE. — Juan Fernandez Islands; 1926; W. L. Schmitt; 1 male, 8 

 females (61007). 



CALLINECTES BOCOURTI A. Milne Edwards 



Plate 55 



Callinectes hocourti A. Milne Edwards, Crust. R^g. Mex., 1879, p. 226 (var. of 

 C. diacanthus) (type-locality, Mullins River, 20 miles S. of Belize, British 

 Honduras; 2 male cotypes in Paris Mus.). — Rathbun, Proc. U. S. Nat. 

 Mus., vol. 18, 1895 (1896). p. 360, pi. 19; pi. 24, fig. 7; pi. 25, fig. 6; pi. 26, fig. 

 6; pi. 27, fig. 6; Proc. Biol. Soc. Washington, vol. 11, 1897, p. 151 (part; not 

 African specimens); Bull. U. S. Fish Comm. for 1900, vol. 2, 1901, p. 49; not 

 Proc. U. S. Nat. Mus., vol. 22, 1900, p. 290 (C. latimanus). 



