330 FALCONID^. 



Bmige. From Central America throughout Guiana and Columbia 

 to Southern Brazil, Bolivia, and Peru. 



Key to tJie Species. 

 a. Chest uniform. 



a'. Chest blackish brown. 



a". Larger; culmen 2-5 inches megarhynchus var., p. 332. 



b". Smaller; culmen 1-55-1 -65 inch . . undnatus var., p. 330. 



h'. Chest uniform blue uncinatus ad., p. 330. 



c'. Chest pure or buffy white, or white 

 washed with gi-eyish. 

 c". Hinder neck blue-gi'ey, like head . . cayennensis ad., p. 333. 

 d". Hinder neck pm'e white. 

 a'". Forehead brown, like the crown tmctnatus ]u\., p. 330. 

 b'". Forehead white, crown of head 



brown cayennensis imm., p. 333. 



6. Chest particoloured. 



d'. Under surface white, longitudinally 



streaked with dark brown cayennensis juv., p. 333. 



e'. Under surface white, transversely 

 crossed with in-egular narrow bars 

 of brown. 



e''. BiU black uncinatus juv., p. 330. 



/". Bill yellowish wilsoni jxiy., p. 333. 



/'. Under surface chestnut, with white or 



fulvous cross bars uncinatus imm., p. 330. 



g'. Under surface white, with blue-grey 

 cross bands. 



g". Bill yellowish wikoni ad., p. 333. 



h". Bill black. 



c'". Larger; culmen 2'5 inches .... megarhynchus ad., p. 332. 

 d". Smaller; cidmen 1-55-1-65 inch uncinatus ad., p. 330. 

 h'. Under surface blue, with a few narrow 

 white cross bars. 

 i". Larger; bill longer (Dii^e SMjurw) .. megarhynchus &A..,^.Z'3I2. 

 k". Smaller ; bill shorter {vide suprA) . uncinatus ad., p. 330. 



1. Leptodonunciiiatus. 



Falco uncinatus, Tem7n. PL Col. 103, 104, 105 (1824, ex Illig.). 



Falco vitticaudus, Max. Beitr. iii. p. 178 (1830). 



Cymindis uncinatus, Less. Man. d' Orn. i. p. 91 (1828) ; Gray, Gen. 



B. i. p. 25, pi. 9. fig. 7 (1846) ; Bp. Consp. i. p. 21 (1850) ; Burm. 



Til. Bras. ii. p. 108 (1856) ; Leot. Ois. Trinid. p. 36 (1866) ; Gray, 



Hand-l. B. i. p. 136 (1869) ; Peh. Orn. Bras. pp. 5, 398 (1871) ; 



Schl. Revue, p. 136 (1873) ; Sharpe, P. Z. S. 1873, p. 419 ; Scl. ^ 



Salv. Nomencl. p. 122 (1873). 

 Cymindis cucidoides, Sioains. Classif. B. ii. p. 209 (1837). 

 Regerhinus uncinatus, Kaup, Mus. Senckenb. iii. p. 262 (l845) ; Cab. 



in Schoynb. Reis. Guian. iii. p. 736 (1848). 

 Rosthramus uncinatiis, Strickl. Orn. Syn. p. 136 (1855). 

 Cymindis pucherani, Leot. Ois. Trinid. p. 40 (1866); Gray, Hand-l, 



B. i. p. 25 (1869) ; Finsch, P. Z. S. 1870, p. 557. 

 Cymindis boliviensis, Bur^n. P. Z. S. 1868, p. 635 ; Gray, Hatid-l, B, 



i. p. 28 (1869). 

 Cymmdis ^vitticaudus, Peh. Orn. Bras. pp. 6, 398 (1871). 



