586 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



Ecuador). — Gurnet, Descr. Cat. Rapt. Birds Norfolk and Norwich Mus., 

 pt. 1, 1864, 29 (Brazil; Gualaquiza, Ecuador; habits); Cat. Birds Prey, 1894, 

 18; List Diurn. Birds Prey, 1884, 14, part. — Sclater and Salvin, Proc. 

 Zool. Soc. London, 18G7, 589 (Pard, Brazil); 1868, 198 (upper Rfo Ucayali, 

 e. Peru); 1873, 301 (upper Rfo Ucayali and Chyavetas, e. Peru); Nom. Av. 

 Neotr.. 1873, 122, part (Brazil) ; Proc. Zool. Soc. London, 1879, 541 (Medellfn, 

 Rem4dios, and Neche, Antioquia, Colombia). — Pelzeln, Orn. Bras., Abth. 1, 

 1868, 2; Abth. 4, 1870, 392.— Salvin, Ibis, 1886, 77 (Bartica Grove and 

 Camacusa, Brit. Guiana). — Ridgway, Proc. Boston Soc. Nat. Hist., 1873, 

 51 (Brazil); Bull. U. S. Geol. and Georg. Surv. Terr., ser. 2, No. 6, 1876, 470, 

 part (Truando, Colombia; Guayaquil, w. Ecuador) ; Hand-list, i, 1899, 244, 

 part (Colombia; Ecuador; Amazonia; Brazil). — Sharpe, Cat. Birds Brit. 

 Mus., i, 1874, 35, part (Guayaquil; Pard), 455 (Demerara, Brit. Guiana). — 

 Taczanowski, Proc. Zool. Soc. London, 1874, 550 (Monterico, Peru); Orn. 

 Perou, i, 1884, 103.— Berlepsch, Proc. Zool. Soc. London, 1885, 119 (Guaya- 

 quil); Nov. Zool., XV, 1908, 289 (St. Georges d'Oyapock, Cayenne). — Allen, 

 Bull. Amer. Mus. Nat. Hist., v, 1893, 148 (Chapada, Matto Grosso, sw. 

 Brazil). — Koenigswald, Journ. fiir Orn., 1896, 386 (Sao Paulo, s. Brazil). — 

 Ihering, Rev. Mus. Paulista, iii, 1899, 344 (Sao Paulo); vi, 1904, 450 (Rio 

 Jurua, Amazonia; crit.). — Salvadori and Festa, Boll. Mus. Zool. Torino, 

 XV, 1900, 27 (Valle del Rfo Zamora, e. Ecuador). — Salvin and Godman, 

 Biol. Centr.-Amer., Aves, iii, 1901, 128, part (Turbo, Colombia; tropical 

 South America). — Berlepsch and Hartert, Nov. Zool., ix, 1902, 112 

 (Perico and rapids of Piritu, Caura, Venezuela; fresh colors of unfeathered 

 parts). — Berlepsch and Stolzmann, Proc. Zool. Soc. London, 1902, 42 

 (Chanchamayo, Peru). — Hartert, Nov. Zool., ix, 1902, 605 (San Javier, 

 nw. Ecuador). — Goeldi, Ibis, 1903,497 (Rio Capim,ne. Brazil). — Menegatjx, 

 Bull. Mus. Hist. Nat. Paris, 1904, 108 (St. Georges d'Oyapock, Cayenne).— 

 Hellmayr, Abh. Bayer Akad. Wiss., Kl. II, x.xii, pt. 3, 1905, (1906), 571 

 (crit. on Gymnops aquilinns Spix); Nov. Zool., xv, 1908, 89 (Rio Thesouras, 

 Brazil); xvii, 1910, 409 (Borba, Brazil). — Ihering and Ihering, Av. Brazil, 

 1907, 83 (Sao Paulo; Pard; Matto Grosso; Borba). — Brabourne and Chubb, 

 Birds South Amer., i, 1912, 63 (Brazil; e. Peru; Ecuador; Colombia; Trini- 

 dad). — Reichenow, Die Vogel, i, 1913, 372. — Cherrie, Bull. Brooklyn 

 Inst. Sci., ii, 1916, 341 (Maipures and rapids of Astures, Orinoco, Venezuela; 

 fresh colors of unfeathered parts). — Chubb, Birds Brit. Guiana, i, 1916, 

 216 (Ituribisi River, Bartica, Kamakabra River, Cako River, Demerara 

 River, Bartica; habits); Ibis, 1919, 279 (Rfo Perene, Junfn, Peru, 800 m.).— 

 Chapman, Bull. Amer. Mus. Nat. Hist., xxxvi, 1917, 239 (Salaqui, Puerto 

 Valdivia, and La Morelia, Colombia). — Bangs and Penard, Bull. Mus. Comp. 

 Zool., Ixii, 1918, 35 (Saramaccapolder, Surinam). — Swann, Synopt. List 

 Accip., pt. 1, 1919, 8, part (tropical South America). — Lonnberg and Ren- 

 dahl, Arkiv Zool., xiv, No. 25, 1922, 29 (near Napo, Ecuador; road to Gualea; 

 Alonguinche, s. of Mojanda, 9,000 feet).— Todd and Carriker, Ann. 

 Carnegie Mus., xiv, 1922, 164 (Tucurinca, Santa Marta, Colombia). — 

 Bond, Auk, xHv, 1927, 563 in text (near Pard, Brazil). — Snethlage, Journ. 

 fiir Orn., Ixxvi, 1928,533, 572, 674 (breeding season in South America). — 

 Stone, Proc. Acad. Nat. Sci. Philadelphia, Ixxx, 1928, 154 (Pard, Brazil). 



Ibider americanus Schlegel, Mus. Pays-Bas, ii. No. 9, livr. 2, 1863, 9 (monogr.) ; 

 No. 36, livr. 10, 1873, 138. — Reiser, Denkw. Mat.-Nat. Akad. Wiss. Wien, 

 1910, 88 (Rio Parnahyba, etc., ne. Brazil). 



Ibyder americanus americanus Swann, Synop. Accip., pt. 1, 1921, 14 (Panama to 

 Brazil and Peru) ; Monogr. Birds Prey, i, 1925, 77 (monogr.) — Bangs and 



