396 BULLETIN 5 0, UXITED STATES NATIONAL MUSEUM 



(crit.); Cat. Birds Prey, 1894, 25.— Taczanowski, Orn. Pdrou, i, 1884, 104.— 

 Salvin, Ibis, 1SS6, 74 (Brit. Guiana). — Allen, BtUI. Amer. Mus. Nat. Hist., 

 ii, 1889, 105 (lower Rfo Beni, Bolivia). — Koenigswald, Journ. fiir Orn., 

 1896, 384 (Sao Paulo, s. Brazil).— Loat, Ibis, 1898, 503 (British Guiana).— 

 Ihering, Rev. Mus. Paulista, iii, 1899, 355 (Iguape, Sao Paulo, s. Brazil). — 

 Salvadori, Boll. Mus. Zool. Torino, xv, 1900, 13 (Urucum, Matto Grosso, 

 sw. Brazil). — Salvin and Godman, Biol. Centr.-Aruer., Aves, iii, 1900, 79, 

 part (Colombia; Guiana; Amazonia; Brazil). — Goeldi, Ibis, 1903, 497 (Rio 

 Capim, ne. Brazil).— Haomann, Journ. fiir Orn., 190G, 108 (Mexiana Island; 

 descr. eggs); Zool. Jahrb., 1907, 22 (Mexiana Island). 



UrubUinga zonura alpha zonura Ridgway, Bull. U. S. Geol. and Georgr. Surv. 

 Terr., ser. 2, No. 2, 1876, 169 (diagnosis). 



Spizaetus niger Vieillot, Nouv. Diet. Hist. Nat., xxxii, 1819, 57 (Ca3^enne). 



Pandion fulvus Vieillot, Nouv. Diet. Hist. Nat., new ed., iii, 1816, 163 (Monte- 

 video) . 



Spizaetus ater Vieillot, Nouv. Diet. Hist. Nat., xxxii, 1819, 58 (based on aigle 

 noir huppi d' Ameriqzie Sonnini, ed. Buffon, vol. 38, pi. 6). 



Aquila picta Spix, Av. Bras., i, 1824, 5, pi. Ic (Marajo Island, Brazil). 



Asturina (Spizigeranus) ardhracinus Katjp, Mus. Senckenb., iii, Heft 3, 1845, 260 

 (South America). 



Hypomorphnus anthracinus Cabanis, in Schomburgk's Reis. Brit. Guiana, iii, 

 1848, 740.— Heine and Reichenow, Nom. Mus. Hein. Orn., 1890, 272, 

 part (Guiana). 



UrubUinga anthracina Sharps, Cat. Birds Brit. Mus., i, 1874, 458 (Caj-enne). — 

 Salvin, Ibis, 1886, 74 (Brit. Guiana).— Quelch, Timehri, vi, 1892, 157 

 (doubtful in Brit. Guiana). — Brabourne and Chubb, Birds South Amer., 

 i, 1912, 69, part (Guiana, Brazil). 



Urubitinga longipes Bonaparte, Consp. Gen. Av., i, 1850, 29 (ex Falco longipes 

 Illiger in Berlin Mus.); Rev. Mag. Zool.. vi, 1854, 537. 



Morphnus brasiliensis Strickland, Orn. Syn., i, 1855, 24 (new name for Falco 

 urubitinga) . 



Urubitinga brasiliensis Pelzeln, Orn. Eras., Abth. 1, 1868, 2; Abth. 4, 1870, 393 

 (ex Aquila brasiliensis Brisson, Orn., i, 1760, 445). 



Heterospizias meridionalis Griscom, Bull. Mus. Comp. Zool., Ixxii, 1932, 313 

 (Perme, Panama). 



Genus BUTEOGALLUS Lesson 



Buteogallus Lesson, Traite d'Orn., 1831, 83. (Type by monotypy, B. catliartoides 



Lesson — Falco buson Latham.) 

 Alectromorphnus IIeine, in Heine and Reichenow, Nom. Mus. Hein. Orn., 1890, 



271. (New name for Buteogallus Lesson, rejected on grounds of purism.) 

 Urubitinga Reichenow, Die Vogel, i, 1913, 3S9, part. 



Mcclium-sized or rather large ha^vks (wing about 311-355 mm.) 

 resembling Hypomorphnus somewhat in form, but differing in more 

 naked loral and orbital regions, partially denuded forehead (entirely 

 devoid of any feathers, even of bristles in aequinoctialis , which also 

 has a smaller nostril, relatively shorter outer toe, relatively shorter 

 tail, and in having diverse types of coloration (that of aequinoctialis 

 resembling that of Heterospizias)) . 



Bill relatively small and weak, the maxilla rather narrow (vertically) 

 with the relatively long unguis not strongly decurved; culmen (chord) 

 much shorter than claw of hallux (slightly longer than that of inner 



