84 



FALCONID.E. 



beneath a little paler grey, pure white at base, banded with brownish 

 grey, these bands being very narrow at the base of the qnill, and 

 gradually getting broader towards the tip of the feather ; tail very 

 long and graduated, black above, paler blackish grey beneath, all 

 the feathers irregularly banded and broadly tipped with white, the 

 bauds at the base of the middle feather slightly narrower ; throat 

 whitish ; rest of under surface of body, with the under wing-coverts, 

 dull leaden grey ; vent and under tail-coverts white ; feathers of 

 leg dull grey ; bill black ; feet yellow, claws black. Total length 

 24 inches, culnien 1-4, wing 12, tail 13, tarsus 3, middle toe 1-8, 

 hind toe 1. 



Hah. The same as that of the genus. 

 a. $ ad. sk. Denkera {Ussher). Capt. G. E. Shelley [P.]. 



20. ERYTHROCNEMA*. 



Urubitinga, auct. recent, (ex Less. err.). 

 Craxirex, £p. et auct. Amer. jmssim (two Gould). 



Bill and tarsus of Erythrocnema unicincta. 



Range. South America, from Chili on the western coast and the 

 neighbourhood of Buenos Ayres on the eastern, throughout the 

 entire continent and Central America into Texas, California, and 

 Arizona in North America. 



* kpv9pb<s. ri(fus ; Kvi)fJt], tibia. 



It is probably owing to the difBeulty of consulting Lesson's portion of the 

 ' Complements de Biiffon ' that this bird lias always been referred to a supposed 

 genus Urubitinga of that author. On looking at vol. vii. (p. 64) it will be seen 

 that he speaks of " Les Urubitinga," but by no means intends the word in a 

 generic sense. Craxirex of Gould is founded on the Buzzard of the Galapagos, 

 which is one of the large-billed Bvteones of the B. erythronotus group {vide 

 infra). Although by most American authors placed along with the Tolyhori, 

 the type of this new genus appears to me closer to Astur, and to replace 

 Melierax in the New World. 



