Todd-Carriker : Birds of Santa Marta Region, Colo^ibia. 217 



margaritce, kindly loaned by Mr. Cory. The type is in fact an unus- 

 ually dark individual, scarcely to be matched in the extensive series 

 accumulated for this investigation. This material indicates that there 

 are really three color-phases in this species, instead of two, as com- 

 monly recognized — a gray, a brown, and a rufous. Of these only the 

 brown phase appears to be represented in Central America, but all 

 three occur in our small series from Bolivia. Specimens in the brown 

 phase from Paraguay (the type-locality of choliba) are scarcely dif- 

 ferent from Central American skins, but a series from Guiana, Trini- 

 dad, and Venezuela average considerably darker, especially above, and 

 are probably separable under the name cruciger Spix, based on the 

 bird of the lower Amazon. The type of margaritce is a bird in this 

 gray phase, but the name may be accepted to cover the pale littoral 

 race which apparently ranges along the coast and islands of Venezuela 

 into Colombia. 



152. Rhinoptynx clamator (Vieillot). 



Rhinoptynx clamator Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1914, 671 

 (Don Amo; meas.). 



One specimen: Don Amo. 



A female in the Smith Collection, shot at Don Amo May 7, 1899, is 

 the only record for this rather rare but widely distributed owl in this 

 region. The specimen compares favorably with other specimens from 

 Costa Rica, Bolivia, and central Colombia. 



Family STEATORNITHID^E. Guacharos. 



153. Steatornis caripensis caripensis Humboldt. 



Steatornis caripensis Allen, Bull. Am. Mus. Nat. Hist., XIII, 1900, 137 

 (Bonda). 



The only published record of the Guacharo for this region is that 

 just quoted, which refers to a single bird sent in by Mr. Smith, and 

 labelled Bonda, September. A pair were seen by the junior author 

 on the road near Cincinnati, at close range on a moonlight night, in 

 November, 1912. They were readily recognized also by the charac- 

 teristic call-note, with which he became familiar while in Trinidad. 



