144 BULLiETIN 129^ UNITED STATES NATIONAL MUSEUM 



Puerto Cabello, Venezuela: F. Meinert (Copenhagen Mus.). 



Mamanguape stone reef, Brazil: June 22, 1899; A. W. Greeley, 

 Branner-Agassiz Exped.; 1 female (25752). 



Pernambuco, Brazil (?); 1875-1877; R. Rathbun, Hartt Explora- 

 tions; 1 male, 1 female (19946). 



Boa Viagem, Brazil, stone reef 5 miles S. of Pernambuco; 1899; 

 A. W. Greeley, Branner-Agassiz Exped.; 1 female (Stanford Univ.). 



Mar Grande, Bay of Bahia, Brazil; 1875-1877; R. Rathbun, 

 Hartt Explorations; 1 female (U.S.N.M.). 



Guaraparim, Brazil; Thayer Exped.; 1 ovigerous female (2035, 

 M. C. Z.). 



Rio de Janeiro, Brazil (Copenhagen Mus.). 



Copacabana, Rio de Janeiro, Brazil; Carlos Moreira; 1 male, 1 

 young female (56010). 



Rat Island, Rio de Janeiro, Brazil; 3 males, 2 females (1 ovigerous) 

 (2038, M. C. Z.). 



Magdalena Bay, Lower California, Mexico: 1 male (Mus. San 

 Diego Nat. Hist. vSoc). 



Perico Island, Panama: October 26, 1904; Albatross; 1 male 

 (33394). 



Bay of Sechura, Peru: About half way between Bayovar and Mata- 

 caballo; 5 to 6 fathoms; April 10, 1907; R. E. Coker; 1 female (40454), 

 received from Peruvian Government. 



Near Callao, Peru: 5 specimens (2118, M. C. Z.). 



Chincha, North Island, Peru: June 18, 1907; R. E. Coker; 1 

 male, 1 female (Peruvian Government); 1 male, 2 females (40455), 

 received from Peruvian Government. 



Chincha Islands, Peru: R. C. Murphy; 1 very. young (Brooklyn 

 Mus.). 



Paracas Bay, Peru: U. S. C. S. S. Hassler; 1 male (2036, M. C. Z.) . 



Caldera, Chile: U. S. C. S. S. Hassler; 1 ovigerous female (2037, 

 M. C. Z.). 



Genus EPIALTUS Milne Edwards 



Epialtus Milne Edwards, Hist. Nat. Crust., vol. 1, 1834, p. 344 (part); 

 type, E. bituberculatus Milne Edwards; type specified by Miers, Journ. 

 Linn. Soc. London, vol. 14, 1879, p. 650. — A. Milne Edwards, Crust. 

 Reg. Mex., 1878, p. 138 (part). — Miers, Journ. Linn. Soc. London, vol. 

 14, 1879, p. 650 (part; Antilibinia excluded). 



Carnifex Gistel, Naturg. Thierreichs, Stuttgart, 1848, p. IX; substi- 

 tuted for Epialtus Milne Edwards, thought to be preoccupied by E-phialtes 

 Gravenhorst. 



Carapace broad, subpentagonal or oblong, almost smooth, with 

 two lateral, more or less laminate projections, sometimes very largely 

 developed. Rostrum broad, triangular or oblong, entire or bilobed 

 at tip. Eyes small. Preorbital tooth either present or absent; 



