228 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.21 



Key to the Pacific American Species of Epialtus, restricted 

 (Males with six free abdominal somites) 



la. Rostrum elongate, tip bifurcate. Hepatic and branchial lobes 



subequal ; a tuft of hair on propodites of legs. . minimus $ 

 lb. Rostrum short, simple, margin entire 



2a. Tip of rostrum triangulate above, spiniform below. Upper 

 crest of palm laminiform sulcirostris 



2b. Tip of rostrum truncate or rounded. Margin of hepatic 



lobes crenulate; propodites of legs tufted 



minimus % (== crenulatus) 



Atlantic species reported as occurring in the Pacific, but unsupported 

 by authenticated specimens of recent date: 



Epialtus bituberculatus Milne Edwards, 1834, p. 345; atlas, 1837, pi. 

 15 [not 14], fig. 11. 



In keeping with the presently recognized range of the species, Indian 

 River, Florida, to Desterro, Brazil, Epialtus bituberculatus, type species 

 of the genus, is considered to have its provenience in the Atlantic, 

 rather than in Chile, to which it was attributed by Milne Edwards. 

 Of a specimen in his Charleston cabinet, Gibbes (1850, p. 173) stated: 

 "Brought from Key West by Prof. W. H. Harvey, and agrees perfectly 

 with Milne Edwards's description and figures of individuals said to 

 come from Chili." Specimens from southern California attributed to E. 

 bituberculatus by Rathbun (1904, p. 173) were subsequently described 

 as E. hiltoni (Rathbun, 1923a, p. 72). 



Epialtus minimus Lockington 

 Plate O, Fig. 5 ; Plate 26, Fig. 1 



Epialtus minimus Lockington, 1877c, p. 77. Streets and Kingsley, 1877, 

 p. 105. Kingsley, 1880, p. 385. Rathbun, 1924c, p. 378; 1925, p. 

 155, pi. 47, fig. 1 ; text-fig. 57a-d. Crane, 1937, p. 57, pi. 2, fig. 7. 



Epialthus minimus, Steinbeck and Ricketts, 1941, p. 466. 



Epialtus crenulatus Rathbun, 1923a, p. 71; type locality, Lower Cali- 

 fornia; ovigerous female holotype, U.S.N.M. No. 18135; 1925, 

 p. 158, text-fig. 53f. 

 Type: Male and female cotypes, originally in California Academy of 



Sciences, no longer extant. 



Type localities: Puerto Escondido and San Jose Island, both in the 



Gulf of California, W. J. Fisher, collector. 



