698 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



head, chili, and throat plain sooty black or very dark sooty; a con- 

 spicuous white collar completely encircling neck, this broadest below, 

 where usually encroaching slightly on median portion of lower throat, 

 the feathers all sooty blackish or dark sooty basally; rest of plumage 

 black, the back, scapulars, rump, and upper tail-coverts slightly 

 glossed with bluish, the wings and tail more grayish black, paler 

 (more grayish sooty) on inner webs of remiges and rectrices; bill and 

 feet black; iris dark brown. 



Adult maZe.— Length (skms), 185-200 (188.3); wmg, 188-205 

 (196.5); tail, 62.5-72 (67.5); exposed culmen, 9-10 (9.5); tarsus, 

 19-22 (20.9); middle toe, 13.5-15.5 (14.6).« 



Adult female.— Length (skins), 180-194 (189); wmg, 185.5-207 

 (197.6); tail, 63-75 (69.4); exposed culijien, 9-10.5 (9.9); tarsus, 

 19.5-22 (21.1); middle toe, 14.5-15.5 (14.9).^ 



Costa Rica (Peralta; Tucurrlqui; San Pedro; Volcdn de Irazu; La 

 Palma de San Jose; Escazu; Boruca; Paso Real de Terraba) and 

 southward through Panamii (Chitra; Calovevora), Colombia (Bogota; 

 Sierra Nevada de Santa Marta; La Concepcion, Santa Marta; Antio- 

 quia; Ambalema; Bucaramanga) and Ecuador (Guayaquil; Quijos; 

 Chimbo; Chaupi; Paramo del Illiniza; Volcan de Pichincha, 13,000- 

 14,000 feet) to Peru (Lima; Cuzco; Cosnipata; Chyavetas; Chancha- 

 mayo; Huallaga; La Merced; Santa Ana; Huaynapata), Trinidad, 

 Grenada, and British Guiana (Roraima). 



Hemiprocne alhicincta Cabanis, Joiirn. f iir Orn., 1862, 165, part (Guiana). 



Acanthylis collaris (not Hirundo collaris Maximilian) Cabanis, in Schomburgk'a 



Reise Brit. Guiana, iii, 1848, 709.— Leotaud, Ois. Trinidad, 1866, 83. 

 Ilemiprocne collaris Chapman, Bull. Am. Mus. N. H., vi, 1894, 58 (Triniddd). 



I have not seen specimens from the type locality of Hemiprocne alhicincta Cabanis 

 (Guiana) or contiguous territory, and the form here characterized as Streptoproaie 

 zonaris alhicincta may possibly not be the same. In this case the name Streptoprocne 

 zonaris minor would have to be used instead, the type locality of Hemiprocne minor 

 Lawrence being central Colombia (Bogotd). 



