602 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



d. Upper parts witli less of mottled grayish, bright ochraceous-bufl predom- 

 inating; diisky spots on inner webs of outer primaries smaller, sometimes 

 obsolescent. (New Providence Island, Bahamas.) 



Tyto perlata luoayana (p. 604). 



dd. Upper parts with more of mottled grayish (except in some Pacific coast 



specimens), this usually predomina,ting; dusky spots on imier webs of 



outer primaries larger. (United States and Mexico; south to eastern 



Nicaragua in winter.) Tyto perlata piatincola (p. 605). 



cc. Darker, the under parts usually ochraceous or tawny-buff (rarely white) ; upper 

 parts with little of ochraceous or tawny, dusky mottled grayish greatly pre- 

 dominating. (Guatemala to Panama.) Tyto perlata guatemalae (p. 610). 



aa. Smaller (wing 226-254 mm.). 

 b. Face and under parts white. (Island of Curafao, Dutch West Indies.) 



Tyto bargei (p. 611). 

 66. Pace not white; under parts tawny-ochraceous, tawny-buff, or cinnamon-buff. 



c. Face silvery gray. (Island of Haiti.) Tyto glaucops (p. 612). 



cc. Face vinaceous-brown (more or less deep). 

 d. Under parts spotted (more or less) with dusky. ( Tyto insularis.) 

 e. Upper parts more spotted, the white spots larger and more numerous; 

 under parts with dusky spots larger or more numerous. (Islands of St. 

 Vincent, Grenada, and Grenadines, Lesser Antilles; Barbados?) 



Tyto insularis insularis (p. 613). 

 ee. Upper parts more uniform in color, with white spots smaller and less 

 numerous, sometimes obsolete; under parts with dusky spots smaller 

 or less numerous. (Island of Dominica, Lesser Antilles.) 



Tyto insularis nigrescens (p. 615). 



dd. Under parts barred with dusky. (Galapagos Archipelago.) 



Tyto puuctatissima (p. 616). 



TYTO PERLATA FDRCATA (Temminck). 



WHITE- WINGED BARIT OWL. 



Similar to the lighter phase of T. p. pratincola,°' but with secon- 

 daries and tail white, ia abrupt contrast with general color of rest of 

 upper parts, the tail, however (more rarely the secondaries also) 

 usually with more or less distinct spots or bands of dusky; under 

 parts always white, though sometimes tinged with buff; averaging 

 decidedly larger. 



Adults (sexes alike). — General color of upper parts a mixture of 

 clear ochraceous-buff or cinnamon-buff coarsely vermiculated gray 

 and dusky (both varying in intensity), the former usually pre- 

 dominating, the feathers of the mottled grayish portion having a 

 subterminal small elongated spot of white, preceded, and often mar- 

 gined, with blackish; secondaries white, or white and ochraceous- 

 buff, often immaculate, but frequently with more or less distinct indi- 

 cations of two or three dusky bands or transverse series of dusky 

 spots; primaries ochraceous-buff on outermost passing into pale buff 

 or white on proximal quiUs (rarely wholly white), usually with a few 

 dusky spots or mottlings, at least on some of the quills; tail white, 



See p. 605. 



