THE SPIDER CRABS OF AMERICA 395 



Chelipeds and legs armed with stout spines above; arm with 

 about 5 spines on upper margin and in the distal half with additional 

 spines on either side of this row; 14 or 15 spines^ on wrist; a few small 

 spines on proximal half of upper surface of palm, the spines tending 

 to form in two rows. Dorsal spines of merus joints of legs arranged 

 in 2 rows distally divergent, a few small ventral spines; about 6 of 

 the spines of the carpus are of large size; about 3 or 4 small spines on 

 proximal half of propodus. 



Color. — Light reddish gray with circular spots of an intense red, 

 on carapace, claws and legs (Gundlach). 



Measurements. — Male in Copenhagen Museum, length of cara- 

 pace, horns included, 113.2; width of same, spines excluded, 116; 

 spines included, 124; length of propodus of cheliped 123.3; height 

 of same, 40 mm. Male, holotype, length of carapace, horns included, 

 28; width of same, spines" excluded, 24; spines included, 30; length 

 of cheliped, about 26 mm. 



Habitat. — Rather rare on stony bottom in deep places (Gundlach). 



Range. — Bahamas and Florida Keys to Venezuela and Panama. 



Material examined. — 



Abaco, Bahamas; 1886; Albatross; 3 males, 1 female (1 male is 

 holotype of M. pilosus, Cat. No. 16299, U.S.N.M.). 



Cuba; 1 female, large (Berlin Mus.). 



St. Thomas; 3 lots of small specimens (Copenhagen Mus.). 



Porto Rico; 1899; Fish Hawk: Reefs at Guanica; January 29; 1 

 male (24400). Reefs at Ponce; January 30; 1 male, 1 young (24091). 

 Culebra; February 11; 1 male (24401). 



Guadeloupe; 1 male, 2 immature females (Geneva Mus.) 



Caracas, Venezuela; 1 male of medium size, 1 female immature 

 • (Berlin Mus.). 



America; 1 female, type of Cancer aculeatus Herbst (Berlin Mus.). 



Locality not given; 1 male, very large (Copenhagen Mus.). 1 

 young female; received from Copenhagen Mus. (19696). 



OtJter records. — Tortugas, Barbados, Aspinwall (Stimpson). Vera 

 Cruz (A. Milne Edwards). St. Bartholomew (Aurivillius) . 



MITHRAX (MITHRAX) HEMPHILLI Rathbun 



Plate 139; plate 259, fig. 2 



Mithrax hemphilU Rathbun, Proc. U. S. Nat. Mus., vol. 15, 1892, p. 263, 

 pi. 37, fig. 2 (type-locality, Indian Key, Florida; holotype female, Cat. 

 No. 15823, U.S.N.M.); Bull. U. S. Fish Comm., vol. 20, for 1900, pt. 2 

 (1901), p. 69. 



Diagnosis. — Infra-orbital and antennal region with two parallel, 

 oblique rows of spines. One spine on propodites of ambulatory legs. 

 Hands smooth. 



