54 TALCONID^. 



having been recorded both from British Honduras as well as from the Republic of 

 that name ^. 



Mr. Eidgway ^'^ states that M'Leannan's specimens from Panama named G. ccBrulescens 

 by Lawrence ^^ are exactly intermediate in colour between that form from Brazil and 

 G. niger from Mexico. Our birds from the State of Panama, a little further to the 

 westward ^, agree with the northern ones. 



ARCHIBUTEO. 



Archibuteo, Brehm, Isis, 1828, p. 1269 ; Sharpe, Cat. Birds Brit. Mus. i. p. 195. 



A genus of the Northern Hemisphere, two species being found in North America — 

 one of them, Archibuteo ferrugineus, occurring in Northern Mexico. In size and 

 general features the resemblance between Archibuteo and Buteo is very great, but the 

 former genus may at once be distinguished by having the front and sides of the tarsi 

 feathered, while in the species of the latter genus the feet are bare. The wings are 

 long and jjointed, the fourth quill being the longest and the first to the fourth emar- 

 ginate on the inner web ; the tail is nearly even ; the toes short, the claws small but 

 stout. The nostrils are irregularly oval, with no visible central tubercle ; they are 

 slightly covered by upcurving loral bristles ; the tomia of the maxilla has no notch and 

 is but slightly festooned. A more pronounced diflPerence between the genera JButeo and 

 Archibuteo consists in the transversely-plated hinder aspect of the tarsus in the former 

 genus, instead of the reticulated and more Aquiline character of the scales in Archibuteo. 

 This feature, however, is not at once apparent, owing to the feathered covering of the 

 tarsus in the latter genus. 



1. Archibuteo ferrugineus. 



Falco ferrugineus, Licht. Abh. k. Ak. Berl, 1838, p. 428 \ 



Archibuteo ferrugineus, Gray, Gen. Birds, p. 12'; Cassin, Birds Cal. & Texas, pp. 104, 159, t. 26'; 



Ridgw. in Baird, Brewer, & Ridgw. N. Am. Birds, iii. p. 300*; Sharpe, Cat. Birds Brit. 



Mus. i. p. 199°; Bendire, Life Hist. N. Am. Birds, p. 259, t. 9. ff. 1, 2, 4'; A. O. U. 



Check-list N. Amer. Birds, 2nd ed. p. 135 '. 



Supra ferrugineus, plumis omnibus medialiter fuscis ad basin albis ; alis griseo-fuscis, seeundariis albido 

 terminatis et indistincte fusco fasciatis, subtus fere albis : subtus albus, plumarum rhachidibus strictissime 

 fuscis, hypocbondriis fuseo sparsim maculatis ; tibiis et tarsis plumosis ferrugineis, fusco crebre trans- 

 fasciatis ; cauda supra ferrugineo lavata ad basin griseo irrorata, subtus pure alba : cera et digitis flavis. 

 Long, tota circa 230, alse 17'5, caudae 9-3, tarsi 3-4. (Desor. exempl. ex Mexico. Mus. Brit.) 



Juv. Supra fere omnino fuscus, colore ferrugineo absente ; tibiis et tarsis albidis, fusco maculatis. 



Hob. Western North America, from the Plains (Eastern North Dakota to Texas) 



westward to the Pacific, and from the Saskatchewan region south into Mexico '^. 



N. Mexico, Real del Monte {Mus. Brit.^). 



We have not received any skins of this species from our collectors in Mexico, 



