BIRDS. . 175 



BTJTEO ERYTHEONOTUS, (King.) 



Halicetus erythronotus, King, Zool. Jour. Ill, 1827, 424. 



Buteo tricolor and unicolor, D'Orb. et Lafebs, Guerin's Mag. 1837, 6, 7. 



Buteo erythronotus, (Gould,) G-ay, Fauna Cliilena^ Aves, 215. 



VuiG. Red-hacked Buzzard. Aguiluclio. 



FiGUEES. — D'Okb. Voy. I'Am. Mer. Birds, PI. iii, Figs. 1, 2. 



This, in its adult plumage, is one of tlie handsomest of the Eapacious birds. It extends its 

 range over the greater part of South America, but is not common in Chile. 



ELANUS LUCURUS, (VieUl.) 



Milvus lucurus, Vieill. ISTouv. Diet. XX, 1818, 563. 



Falco dispar, Tbmm. PL col. I, about 1824. 



Elanus dispar, (Temm.) Gay, Fauna Chilena, Aves, 33. 



VcxG. White-tailed Hawh. Bailarin. 



Figures. — Bonap. Am. Orn. II, PL si, Fig. 1. 



" Temm. PL col. I, PL cccxix. 



" AuD. B. of Am., PL ccclii ; oct. ed. I, PL xvi. 



" Gay's Chile, Orn. PL ii. 



Several specimens of this handsome bird are precisely identical with others, to which we have 

 referred for comparison, from the southern States of this Union. This species has therefore an 

 extensive range of locality, embracing the southern portion of the United States, Mexico, Cen- 

 tral America, and the countries of western South America. In Lietit. Gilliss's notes we find 

 the following: '''Quite numerous. The nest is composed of small sticks, and the female lays 

 from four to six eggs, of a dirty yellowish white, with brownish spots. Its vulgar name is de- 

 rived from bailar, to dance or balance, from the easy and graceful manner in which the bird 

 seems almost to float upward or sink through the air. ' ' 



CIRCUS CINEREUS, Vieill. 



Circus cinereus, ViEttL. Nouv. Diet. IV, 1816, 454. 



Falco histrionicus, QuoT and Gaim. Voy. Uranie, Zool. 1824, 93. 



Circus cinereus, (Vieill.) Gay, Fauna Chilena, Aves, 239. 



VuLG. JSfebli. 



Figures. — Quoy and Gaim, Voy. Uranie, Zool. Atlas, Birds, PL xv, xvi. 



This handsome Harrier is common in Chile, and preys on small quadrupeds, reptiles, and 

 insects. 



CIRCUS MACROPTERUS, Vieill. 



Circus macropterus, Vieill. Nouv. Diet. IV, 1816, 458. 

 Falco palustris, De Wied, Beitr. zur Nat. Bras. Ill, 1830, 224. 

 Circus super ciliosus, Sess. Traite d'Orn. I, 1831, 87. 

 Figure. — Temm. PL col. I, PL xxii. 



Of rare occurrence in Chile, though represented as abundant In other parts of South America, 



