34^ 1;KimiKLYX IXSTITI'TI-; MUSELM. SCIEXCE BULLETIN- 2. 6. 
lorhyncluis. Galliiiaf/o and Thamnophilus, and liave found the stom- 
achs of other specimens full of beetles and other insects ; while one 
examined contained parts of small fish, and another the hair and 
bones of some small mammal. 
A considerable variation was observed in the color of the soft 
parts. A female taken at Caicara July 4, 1898, had the eye dark seal 
brown; skin about eye cinereous; bill plumbeous at base, blackish at tip; 
cere pale pea green ; feet Naples yellow. Another female, taken on the 
same date, had a light seal brown eye; bill blackish at tip changing 
through slate color to greenish grey at base; cere and skin about eye 
chrome yellow ; feet deep chrome yellow. 
Falco RuEiGULARis (Daudin). 
Falco ritfigularis Daud., Traite d'Orn. II. 1800. p. 131. 
Hypotriorchis rufigularis Berlepsch & Hartert. p. 115. 
Rare. Four specimens, two pairs, were taken in the vicinity of 
the falls of Atures on my first expedition, and an adult male was 
taken at Caicara, July 4, 1907. In the stomach of the last were found 
the remains of a Ground Dove, CliacmcpcUa. Berlepsch and Hartert 
record a specimen from Suapure on the Caura River. Not seen else- 
where. 
Eye seal brown ; bill slate black, greenish plumbeous at base of 
mandible; feet chrome yellow, claws black. 
Falco columbarius Linnaeus. 
Falco coliinibaritis L., Syst. Nat. ed. 10. 1758. p. 90. 
Hypotriiirrliis coluiiibarins Berlepsch & Hartert, p. 115. 
Two Pigeon Hawks were seen and collected in 1898. an immature 
female at Altagracia in January, and an adult male at Caicara in 
March. The stomach of the latter contained parts of a swallow. 
Diplocliclidou mclauplcuca. 
Pandion HALLviJTus CAROLiNENSis (Cnieliu). 
Falco caroliiuvisis Cm.. Syst. Nat. T. 1788. p. 263. 
Pandion Iialiactiis caroliiwnsis Berlepsch & Hartert, p. 115. 
The American < )s]irey is occasionally seen along the Orinoco as 
far up the river as I explored. A fine adult male was taken at Caicara, 
March to, 1898. 
