AVES FALCONID^. 623 



BUTEO MELANOLEUCUS (Vicillot). 



Aquila obscura y blanca, Azara, Apunt. I. p. 6i (1802). 



Aquila parda, Azara, torn cit. p. 65. 



Sphaetus nielanokuais, Vieill. N. Diet. d'Hist. Nat. xxxii. p. 57 (1819: 



ex Azara, p. 61). 

 Spizaetus fuscescens, Vieill. torn cit. p. 55 (ex Azara, p. 65); Hartl. Ind. 



Azara, p. i (1847). 

 Falco aguia, Temm. PI. Col. I. pi. 302 (1824). 

 Haliaetus agitia, Cuv. R^gn. Anim. I. p. 327 (1829); Fraser, P. Z. S. 1843, 



p. 108 (mountainous parts of Chili). 

 Haliaetus melanoleticus, D'Orbign. Voy. Amer. Merid. p. 76 (1835: Pat- 

 agonia); id. & Lafr. Syn. Av. p. 3 (1838); Burm. Reis. La Plata, II. 



p. 435 (186 1 : Parana: Tucuman : Pampas); C. Burm. An. Mus. Nac. 



Buenos Aires, III. part X. p. 241 (1888: Northern Patagonia), part 



xi, p. 315 (1890: Rio Singeur: Rio Chico del Chubut). 

 Geyanoaetus agitia, Kaup, Classif. Saug. u. Vog. p. 122 (1844); Hartl. 



Naum. 1853, p. 220. 

 Bufeo aguia, Cab. &: Tschudi, Arch, fiir Nat. 1844, p. 264. 

 Pontoaetus mclanoleitcus, Gray, Gen. B. I. p. 18 (1845); Hartl. Ind. Azara, 



p. I (1847); Des Murs in Gay's Hist. Chil. Zool. I. p. 221 (1847); 



Phil. & Landb. Cat. Av. Chil. p. 4 (1868). 

 Cttncuma melanoleucjts, Gray, Cat. Accipitr. p. 25 (1848). 

 Heteroaetus aguia, Kaup, Contr. Orn. 1850, p. 74. 

 Geranoaetus me/ajw/eucus, Strickl. Orn. Syn. p. 55 (1855); Pelz. Reis. 



Novara, Vog. p. 7 (1865: Chili); Scl. & Salv. Ibis, 1869, p. 284 



(Cape Negro, Nov.); Cunningh. Nat. Hist. Str. Magell. p. 269 (1871); 



Huds. P. Z. S. 1872, pp. 536, 549 (Rio Negro); Scl. & Salv. 



Nomencl. Av. Neotr. p. 119 (1873); Lee, Ibis, 1873, p. 131 (Argent. 



Rep.); Gurney, Ibis, 1876, p. 66; Durnf. Ibis, 1877, p. 38 (Chupat 



Valley, breeding in Nov.), 1878, p. 397 (Tambo Point, Dec. nesting); 



Scl. & Salv. P. Z. S. 1878, p. 434; Gibson, Ibis, 1879, p. 409 (Cape 



San Antonio, Dec. breeding); Scl. & Salv. Voy. Chall. II. Birds, p. 



104 (1880: Elizabeth IsL, Jan.); Doering, Expl. al Rio Negro, Zool. 



p. 51 (1882: banks of the Rio Negro, breeding); White, P. Z. S. 



1882, p. 263 (Campo Colorado, Oran, Salta, Nov.); Gurney, List 



Diurn. B. Prey, p. 74 (1884); Barrows, Auk, I. p. 110(1884: Entre- 



