BIRDS OF NORTH AND MIDDLE AMERICA. 697 



Nidification. — Nest in cavities of rocks, composed of mud and moss.** 

 Range. — Southern Mexico to southern Brazil, Bohvia, and Peru; 

 Cuba; Haiti; Jamaica; Grenada. (Three sj)ecies.) 



KEY TO THE SPECIES AND SUBSPECIES OP STREPTOPROCNE. 



a. Tail emarginate; under parts with more or less of white; smaller (wing not more 

 than 204 mm.). 

 6. Under parts black with a white band across chest. (Adults.) 

 c. White collar continuous around neck. (Streptoprocne zonaris.) 

 d. Forehead sooty black, scarcely if at all dilferent from color of crown. 

 e. General color less intensely black (more sooty); larger (wing 214 mm.). 

 (Southern Brazil and northern Argentina.) 



Streptoprocne zonaris zonaris (extralimital).^ 

 ee. General color deep or intense black; smaller (wing 188-207 mm.). 

 (Northern South America to Costa Rica.) 



Streptoprocne zonaris albicincta (p. G97). 

 dd. Forehead always sooty gray or grayish brown, distinctly different from 

 black of crown. 

 e. No white line on sides of forehead. (Southern Mexico to Guatemala and 



British Honduras.) Streptoprocne zonaris mexicana, adidts (p. 700). 



ee. A narrow white line along side of forehead. (Jamaica; Cuba.) 



Streptoprocne zonaris pallidifrons, adults (p. 701). 

 cc. White collar interrupted on sides of neck (confined to hindneck and chest) 



(Southeastern Brazil.) Streptoprocne biscutata (extralimital).c 



bb. Under parts sooty with whitish terminal margins to feathers. 



Streptoprocne zonaris mexicana, young (p. 700). 



aa. Tail even; under parts without any white (uniform sooty); larger (wing 228-233 



mm.). (Mexico.) Streptoprocne semicollaris (p. 702). 



STREPTOPROCNE ZONARIS ALBICINCTA (Cabanis). 



COLOMBIAN COLLARED SWIFT. 



Similar to S. z. zonaris, of Brazil, but decidedly smaller and 

 coloration much blacker. 



Adults (sexes al%ke). — Pileum black, usually slightly (but rarely 

 distinctly, never conspicuously) more sooty on forehead; sides of 



« Salmon, Proc. Zool. Soc. Lond., 1879, 531. 



l> Hirundo zonaris Shaw, in Miller's Cimel. Phys., 1796, 100, pi. 55 (type locality 

 not stated, but is assumed to be Brazil). — n[emiprocnc] zonaris Cabanis and Heine, 

 Mus. Hein., ii, 1860, 83 (Brazil) .—Chietura zonaris Sclater, Cat. Am. Birds, 1862, 

 282, part (s. Brazil). — Hirundo albicolHs Vieillot, Nouv. Diet. d'Hist. Nat., xiv, 

 1817, 524 (Brazil). — Hirundo collaris Maximilian, Reise Bras., i, 1820, 75 (Rio 

 de Janeiro, Brazil). — Cypsclus collaris Temminck, PI. Col., 33d livr., Jan., 1821, 

 pi. 195; Maximilian, Beitr. Nat. Bras., iii, 1830, 344. — AcanthyUs collaris Bur- 

 meister, Syst. Ueb. Th. Bras., i, pt. ii, 1856, 364. — Ch[acturd\ zonaris (lypica) Hartert, 

 Das Tierreich, Podarg., Caprim., Macropt., 1897, 74, part. — Streptoprocne zonaris 

 zonaris Oberholser, Proc. Biol. Soc. Wash., xix, May 1, 1906, 69, part. 



c Chsetura biscutata Sclater, Proc. Zool. Soc. Lond., 1865, 609, pi. 34 (Ypanema, 

 s. e. Brazil; coll. P. L. Sclater; ex Cypselus biscutata Natterer, manuscript); Hartert, 

 Cat. Birds Brit. Mus., xvi, 1892, 479. — [Hemiprocne] biscutata Sclater and Salvin, 

 Nom. Av. Neotr., 1873, 95. — Streptoprocne biscutata Oberholser, Proc. Biol. Soc. 

 Wash., May 1, 1906, 69. 



