14 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



Pachycheles maniliferus Cano, 1889, p. 97. 



Pachycheles monilifer Rathbun, 1900, p. 148. Moreira, 1920, p. 126, 

 footnote. 



Previous records. — 

 Mexico, Contoy, 12-18 fms: W, Stimpson (A. Milne Edwards and 

 Bouvier). Brazil, Mamanguape: A. W. Greeley (Rathbun) ; Pernam- 

 buco: Vettor Pisani (Cano); Pernambuco at Ilha de Nogueira and 

 Boa Viagem, Pernambuco: A. W. Greeley (Rathbun) ; Bahia: (Mor- 

 eira, 1901); Rio de Janeiro: U. S. Expl. Exped. (Dana); Rio de 

 Janeiro: (Ortmann) ; vicinity of Rio de Janeiro: (Moreira, 1920). 



Material examined. — 

 A94-46. Outer Hillsboro Reef, Florida; Apr 4, 1946; 0-3 ft; coll. 



J. S. Garth. Id, l?ov. 

 A25-39. Isla Cubagua, Venezuela; Apr 14, 1939; shore. 6d, 4?. 

 A28-39. Isla Cubagua, Venezuela; Apr 15, 1939; 2 fms. 1 young. 

 A30-39. Isla Cubagua, Venezuela; Apr 15, 1939; shore. Icf . 



Measurements. — Males, 2,8 to 8.6 mm; non-ovigerous females, 2.4 

 to 3.6 mm ; ovigerous female, 9.0 mm. 



Remarks. — This species has been taken in the littoral and to depths 

 of 18 fathoms. Moreira (1920) encountered it among Fucus in the 

 vicinity of Rio de Janeiro; the young specimen from St. A28-39 was 

 also taken from algae. The present material is the first reported outside 

 of Brazil, except for the single record of A. Milne Edwards and Bouvier 

 (1923). 



As the writer has stated elsewhere (Haig, 1955, p. 42), White's 

 Porcellana rugosimanus {nomen nudum), which was erroneously 

 ascribed to Chile, should be referred to Pachycheles monilifer. 



PISOSOMA Stimpson, 1858 

 Key TO THE Western North Atlantic Species 



1. Carpus of chelipeds without longitudinal ridges; chelipeds 



completely covered with rounded granules . angustifrons 

 Carpus of chelipeds with three rugose, longitudinal ridges 2 



2. Teeth on carpus of chelipeds blunt, entire; no longitudinal 



groove on outer margin of hand ; ambulatory legs thickly 



hairy curacaoense 



Teeth on carpus of chelipeds pointed, denticulate; outer margin 

 of hand with a longitudinal groove; ambulatory legs 

 sparsely hairy jugosum 



