THE GENUS CHOEDEII.ES SWAINSON OBERHOLSER. 95 



with white and bufl'y like the back; edge of wing along the alula 

 mostly biiffy or creamy white; lores and supraocular region mixed 

 white and blackish brown ; auriculars and postocular region blaclrish 

 brown, much mixed with tawny ochi'aceous and a little with white; 

 cheeks, chin, and sides of neck, blackish brown, much mingled with 

 white and buffy; a large triangular patch on throat white; below 

 this a band of dark brown mu*ch spotted with tawny ochraceous; 

 breast dark brown, finely mottled and vermiculated with whitish; 

 lower breast cream white, with conspicuous dark brown cross-bars; 

 abdomen, sides, flanks, and crissum, buff or whitish, with conspicuous 

 dark brown cross-bars, these narrower, farther apart, and somewhat 

 broken on lower tail-coverts; lining of wing deep ochraceous buff, 

 barred with dark brown. " Iris brown ; feet dusky flesh ; bill brown- 

 ish black." 



Iris brown ; bill black or brownish black ; feet duslry^ flesh color or 

 brownish. 



Measurements. — Male: Total length (in flesh), 198-203 (average 

 201) mm.i 



Male:- Wing, 150.5-172 (average, 163) mm.; tail, 84-102 (93.6) ; 

 exposed culmen, 4.8-6.8 (5.8) ; tarsus, 11.5-14 (12.6) ; middle toe, 

 12.1-15 (13.6). 



Female:- Wing, 147.5-169 (160) mm.; tail, 86.5-99 (92.7); ex- 

 posed culmen, 4.5-6.1 (5.3) ; tarsus, 11.5-14 (12.7) ; middle toe, 12- 

 14.7 (13.4). 



Type-locality. — Cayenne, French Guiana.* 



Geographical distribution. — Northern, central, and central eastern 

 South America. Permanently resident in the Lower Tropical Zone, 

 north to Tobago Island; Margarita Island, Venezuela; Cumana, 

 Caracas, and Encontrados (Zulia), northern Venezuela; and Car- 

 tagena, northern Colombia; west to Cartagena in northern, and 

 Rio San Juan Oscuro in western, Colombia; Guayaquil, western 

 Ecuador; Santa Lucia (mouth of Tujnbez River), northwestern 

 Peru, and Matto Grosso, central western Brazil; south to Matto 

 Grosso ; and to Itapura and Iguape in Sao Paulo, southeastern Brazil ; 

 east to Iguape, Rio de Janeiro, Bahia, Pernambuco, and Para, eastern 

 Brazil; Cayenne, French Guiana; Surinam; Quonga and Aunai, 

 British Guiana ; Trinidad Island ; and the island of Tabago. 



Remarks. — With present material it is impossible to recognize in 

 South America more than the two current races of this species, Chor- 

 deiles acutipennis acutipennis and Chordeiles acutipenms exilis 

 {■=zpruinosus). Compared with birds from Guiana, those from 



1 Three specimens. 



2 Eleven specimens, from Venezuela and Guiana. 



8 Ten specimens, from Venezuela. British Guiana, French Guiana, and Brazil. 

 * Designated by Berlepsch and Hartert, Novit. Zool., vol. 9, 1902, p. 90. 



