THE CANCROID CRABS OF AMERICA 523 



Virgin Islands; from piles; 1915; C. R. Shoemaker; 5 males, 1 

 female, 1 young (60220), gift of Carnegie Institution. 



Curagao; 1884; Albatross; 1 female (17904). 



PANAMA. — Shore of Panama (Pacific side); low tide, rocks; 

 May-July, 1924; Elizabeth Deichmann; 1 male (60224). 



Near Panama City; under stones on reefs; May, 1927; Melbourne 

 Ward; 1 {em&le, forma tessellata; returned. 



BRAZIL.— Pernambuco stone reef at Ilha de Nogueira; July 10, 

 1899; A. W. Greeley, Branner-Agassiz Expedition; 1 male (25725), 

 1 female (Stanford Univ.). 



Recife Mapelle; 1876-1877; R. Rathbun, Hartt Explorations; 

 1 male (19966); forma tessellata. 



Bay of Bahia; specimens in Copenhagen Museum. 



Rio de Janeiro; one specimen lent by Copenhagen Museum. 



Villa Bella, Ilha Sao Sebastiao, Sao Paido; October, 1925; H. Lue- 

 derwaldt; 1 young (61128); forma tessellata. 



Ponta da Cruz, Sao Francisco, Santa Catharina; October 7, 1925; 

 W. L. Schmitt; 1 male (60952); forma tessellata. 



Florianopolis (formerly Desterro); Fritz Mtiller; 3 males,' cotypes 

 (Paris Mus.), 1 female, cotype (20261), received from Paris Museum; 

 forma tessellata. 



ARGENTINA.— Buenos Aires (?); 1 male (48319), received from 

 H. von Ihering; forma tessellata. 



San Antonio W.; A. Carcelles and A. Radice, collectors; 2 males, 

 9 ovigerous females; lent by Buenos Aires Mus. (14833). 



Puerto Militar; Luis Alimonda collector; 2 males; lent by Buenos 

 Aires Mus. (11775, 1 1776) ;/orma tessellata. 



PATAGONIA.— Eastern Patagonia; C. E. Porter; 1 male (60951), 

 forma tessellata, variety with dorsum nearly smooth. 



PILUMNUS NUDIMANUS Kathbun 



Pilumnus nudimanus Rathbun, Bull. U. S. Fish Comm. for 1900, vol. 20, pt. 2 

 (1901), p. 39, text-fig. 7 (type-locality, Arroyo, Porto Rico; holotype female, 

 Cat. No. 23770, U. S. N. M.). 



Diagnosis. — Carpus of chelipeds covered with large tubercles set 

 in, but not concealed by, a short dense fur. Palms naked. A 

 tuberculate ridge on hepatic region. 



Pescn^j^ion.— Carapace covered with a short dense pubescence 

 (easily rubbed off) among which are a few tufts of longer stout setae 

 on the frontal, gastric, and anterior branchial regions. Hepatic 

 region prominent, having an oblique row, parallel to the antero- 

 lateral margin, of five or six small, reddish-brown beadlike tubercles, 

 visible amid pubescence. Antero-lateral margin armed with three 

 spines, stout at the base but sharp at the ends which are hooked 

 forward, the anterior one with a denticle on its posterior slope. A 

 denticle at outer angle of orbit and another behind it. Upper orbital 



