238 Bulletin American Museum of Natural History. [Vol. XXXVI, 



(567) Catharista urubu ( Vieill.). 



Vultur uruhu Vieill., Ois. Am. Sept., I, 1807, p. 23, pi. ii (Carolina and Florida). 

 Cathartes atratus Wyatt, Ibis, 1871, p. 382; Scl. & Salv., P. Z. S., 1879, p. 542 

 (Dept. of Antioquia; breeding). 



Catharista atrata Robinson, Flying Trip, p. 154 (Abundant everywhere). 



Abundant and of general distribution from the Tropical to the Tem- 

 perate Zones. Our material of this, and the following species, does not 

 warrant a critical study of the groups to which they belong. 



Sta. Elena, 2. 



(568) Cathartes aura aura {Linn.). 



Vultur aura Linn., Syst. Nat., I, 1758, p. 86 ("America calidiore"). 



Cathartes aura Wyatt, Ibis, 1871, p. 382; Scl. & Salv., P. Z. S., 1879, p. 542 

 (Dept. Antioquia; breeding); Robinson, Flying Trip, p. 154 (Barranquilla; Honda; 

 Guaduas); Allen, Bull. A. M. N. H., XIII, 1900, p. 129 (Santa Marta). 



Generally distributed throughout Colombia, ranging from the Tropi- 

 cal to the Temperate Zone. We observed but one form of Turkey Vulture 

 in Colombia, the head of which in life is described by Miller as " top of head 

 ashy white; face and neck dark purple." This color varies considerably, 

 and the head of a bird shot by Fuertes is described by him as follows : 



"The caruncles about the eyes and forehead, ivory-white, changing to 

 light blue on the nape; hard part of the bill ivory-white, and- all the rest of 

 the head light crimson-red. The bird appears able at will to drive all red 

 from the soft parts of his head, leaving it sickly white." 



Sta. Elena, 1; Puerto Valdivia, 1. 



Oedek ACCIPITRIFORMES. 

 Family FALCONID^. Caeacaeas, Hawks, Falcons, Ospeeys, Etc. 



(573) Polyborus cheriway (Jacq,). 



Falco cheriway Jacq., Beytr. Gesch. Vogel, 1784, p. 17, pi. iv (Aruba Island and 

 coast of Venezuela). 



Polyborus cheriway Scl. & Salv., P. Z. S., 1879, p. 542 (Rio Negro breeding); 

 Robinson, Flying Trip, p. 155 (R. Magdalena); Allen, Bull. A. M. N. H., XIII, 

 1900, p. 131 (Bonda; Valencia; Santa Matta). 



