344 BROOKLYN INSTITUTE MUSEUM. SCIENCE BULLETIN 2. 6. 



Native name Gavildn Colorado. Common along the wooded banks 

 of streams and ponds throughout the middle Orinoco region. 



Eye seal brown ; bill black, blackish slate at base ; cere blackish slate ; 

 corners of the mouth plumbeous ; feet greyish white. 



BUTEOGALLUS AEQUiNocTiALis (Gmelin). 



Falco aequinoctialis Gmelin, Syst. Nat., I: 1788: 265 (Cayenne). 

 Bwteogallus aequinoctialis Stone, Proc. Ac. Nat. Sci. Phil. 1913 : p. 195 



(Pedernales). 



Recorded from the delta region by Stone. 



ASTURINA NITIDA (Latham). 

 Falco nitida Lath., Ind. Orn. I. 1790. p. 41. 

 Asturina nitida Berlepsch & Hartert, p. 113. 



Rare, not met with on either my first or second expedition, but 

 a fine adult male was collected at Caicara on April 30, 1907. 



Eye vandyke brown; bill black, slate at base of mandible; cere and 

 bare skin about gape chrome yellow ; feet chrome yellow ; claws black. 



Berlepsch and Hartert recorded a single specimen from Suapure 

 on the Caura River. 



MICRASTUR BRACHYPTERUS (Temminck). 



Falco brachypterus Temm., Rec. PI. col. tab. 116, 141 (1822). 

 M icrastur semitorquatus Berlepsch & Hartert, p. 113. 



Not common. In 1898 two specimens were taken at Caicara. an 

 adult male in April and an immature female in July. In July. 1907. 

 an adult female was collected at the same point. The stomach in 

 each case contained remains of small lizards. 



Colors from fresh birds ; eye seal brown ; bill black, base of mandible 

 yellowish oil green; feet deep chrome yellow, with an olive wash, espe- 

 cially on the toes. 



CIRCUS BUFFONI (Gmelin). 



Falco Buffoni Gmelin, Syst. Nat. I: 1788: p. 277 (Cayenne). 

 Circus buffoni Stone, Proc. Ac. Nat. Sci. Phil. 1913: 194. (La Pedrita, 



Rio Uracoa). 



Recorded from the delta region by Stone. 



