394 BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



fine whitish bars or spots; bill black at tip, pale yellow at base; iris 

 deep red; feet yellowish green. 



Immature (sexes alike) .—Similar to that of Hypomorphnus urubi- 

 tinga ridgwayi. 



Juvenal (sexes alike). — Similar to that of Hypomorphnus urubitinga 



ridgwayi. 



Natal dovm. — Not known. 



Adult male.— Wings 377-400 (391); tail 232-256 (244.6); culmen 



from cere 30-33.5 (31.6); tarsus 114-125 (117.4); middle toe without 



claw 47-51 (48.5 mm.). ^3 



Audit female.— Wings 383-428 (409.5); tail 240.5-261 (251); 



culmen from cere 30-34 (32); tarsus 119-128 (123.5); middle toe 



without claw 49-52.5 (50.5 mm.).^* 



Bange. — Resident from extreme eastern Panama (Perme, Darien), 



Trinidad, and Tobago, through Colombia, Venezuela, the Guianas, 



all of Brazil, Ecuador, to Peru (Rio Javarri, Chyaveta, Chamicuros, 



Santa Cruz) and to northern Bolivia (Rio Beni, Chiquitos). 

 Type locality. — Brazil. 



Falco urubitinga Gmelin, Syst. Nat., i, pt. 1, 1788, 265.— Latham, Index Orn., i, 

 1790, 22.— Daudin, Trait6 d'Orn., ii, 1800, 57.— Shaw, Gen. Zool., vii, pt. 1, 

 1809, 60 (Brazil).— Temminck, Planches Col., i, 1825, pi. 55, and text.— 

 Maximilian, Beitr. Naturg. Bras., i, 1830, 196 (Itabapuana; Rio Mucuri; 

 Camacano). 



Aquila urubitinga Spix, Av. Bras., i, 1824, 4, pi. 1 b (Bahia; Pard). 



Morphnus urubitinga Stephens, in Shaw's Gen. Zool., xiii, pt. 2, 1826, 17. 

 CuviER, Regne Anim., ed. 2, i, 1829, 330.— Lesson, Traite d'Orn., 1831, 

 51. — d'Orbigny and Lafresnaye, Synop. Avium, 1837, 4, part (Chiquitos, 

 Bolivia).— d'Orbigny, Voy. Amer. M^rid., iv, pt. 3, Ois., 1839, 84, part 

 (Bolivia; habits).— Gray, List Spec. Brit. Mus., pt. 1, Accip., 1848, 21 

 (Brazil; Cayenne; "West Indies").— Sclater, Proc. Zool. Soc. London, 1857, 

 261 (Rio Javarri, upper Amazon). — Leotaud, Ois. Trinidad, 1866, 14. — 

 Hellmayr, Nov. Zool., xxviii, 1921, 177 (crit.).— Todd and Carriker, Ann. 

 Carnegie Mus., xiv, 1922, 152 (Bonda, Neguage, and Don Diego, Santa 

 Marta; cirt.; considers M. ridgwayi specifically distinct). 



Morphnus urubitinga urubitinga Hellmayr, Publ. Field Mus. Nat. Hist., zool. 

 ser., xli, 1929, 462 (Piauhy, Brazil). — Naumburg, Bull. Amer. Mus. Nat. 

 Hist., Ix, 1930, 109 (crit, distr.; Matto Grosso, Brazil). 



Harpyia urubitinga Swainson, Classif. Birds, ii, 1837, 208. 



Ihjpomorphnus urubitinga Tschudi, in Wiegmann's Arch, fiir Naturg., x, pt. 1, 

 1844, 263 (Peru); Fauna Peruana, Aves, 1844-46, 16, 84.— Cabanis, in 

 Schomburgk's Reis. Brit. Guiana, iii, 1848, 740.— Burmeister, Syst. Uebers. 

 Th. Bras., ii, 1855, 43 (Brazil) ; Proc. Zool. Soc. London, 1868, 633.— Heine 

 and Reichenow, Nom. Mus. Hein. Orn., 1890, 272 (Brazil; Cayenne). 

 Hypomorphnus urubitinga urubitinga Peters, Check-list Birds of World, i, 1931, 

 244._Griscom, Bull. Mus. Comp. Zool., Ixxii, 1932, 314 (Perm^, Panama); 

 Ixxviii, 1935, 300 (Perm6, Panama).— Roberts, Trop. Agr., xi, No. 4, 1934, 



»3 Five specimens from Panama, Colombia, Brazil, Surinam, and Ecuador, 

 •* Four specimens from Brazil and Surinam, 



