BIRDS OF NORTH AND MIDDLE AMERICA 563 



dd. Wing length under 250 mm. 



M. semitorquatus buckleyi, juv. (extralimital)'* 

 cc. Back and upper side of folded wing not conspicuously barred with 

 fulvous-tawny. 

 d. Underparts, including breast, heavily barred with brownish black. 

 e. Wing under 250 mm.M. semitorquatus buckleyi, imm. (extralimital) 

 ee. Wing over 250 mm. 



/. Dorsal coloration lighter, fuscous to dark fuscous. 



M. semitorquatus semitorquatus, imm. (extralimital) 



Brazil); Berlepsch, Journ. fiir Orn., 1887, 122 (Paraguay); Gurney, List Diurn. 

 Birds Prey, 1884, 24, part; Cat. Birds Prey, 1894, 19, part; Koeningswald, Journ. 

 fur Orn., 1896, 385 (Sao Paulo, s. Brazil); Sharpe, Hand-list, i, 1899, 246, part; 

 Ihering, Rev. Mus. Paulista, vi, 1904, 337 (Paraguay). — Micrastur melanleucus 

 Ridgway, Ibis, 1876, 3, part (diagnosis); Gurney, Ibis, 1879, 171, footnote. — 

 Micrastur melanoleucu s melanoleiicus Swann, Synopt. List Accip., pt. 1, 1919, 15, 

 in part; Synop. Accip., pt. 1, 1921, 24, part; Monogr. Birds Prey, i, 1925, 140 

 (monogr.).- — (?) Falco frenatus Lichtenstein, Verz. Doubl., 1823, 62 (Brazil; 

 cites Buse hrune des champs Azara and Epervier noir et blanc Azara, F. leucomelas 

 lUiger). — Falco brachypterus Temminck, Planches Col., i, 1824, pis. 116, 141 

 (Brazil, etc.). — Astur brachypterus Spix, Av. Braz., i, 1824, 9 (Bahia, Brazil) ; 

 Vigors, Zool. Journ., i, 1824, 338; Stevens, in Shaw's Gen. Zool., xiii, pt. 2, 1826, 

 28.- — Nisus brachypterus Lesson, Man. d'Orn., i, 1828, 98; Traite d'Om., 1831, 

 62; Cuvier, Rdgne Anim., i, ed. 2, 1829, 334; SchJegel, Mus. Pays-Bas, ii. No. 4. 

 livr. 1, 1862, 52, part (monogr.); No. 36, hvr. 10, 1873, 99, pa.Tt.~Micrastur 

 brachypterus Gray, Gen. Birds, ed. 2, 1841, 6; fol. ed., i, 1849, 28, pi. 10, fig. 1; 

 List Spec. Brit. Mus., pt. 1, Accip., ed. 2, 1848, 69, part (Bahia, Brazil); Hand- 

 hst, i, 1869, 31, No. 290, part (Bahia, Brazil); Bonaparte, Consp. Gen. Av., i, 

 1850, 30; Pelzeln. Reis. Novara, Vog., 1865, 12; Orn. Bras., Abth. 1, 1868, 7; 

 Abth. 4, 1870, 398; Hellmayr, Nov. Zool., xiv, 1907, 405 (Borba, Rio Madeira 

 w. Brazil; crit. on Sparvius semitorquatus Vieillot and S. melanoleucus Vieillot) 

 xvii, 1910, 409 (Borba); Dabbene, Orn. Argent., 1910, 415 (Lediama, Jujuy) 

 Boll. Soc. Physis, Buenos Aires, i, 1913, 298 (Chaco, Argentina); Bertoni, Fauna 

 Paraguaya, 1913, 42 (Puerto Bertoni, Yguasi); Swann, Synopt. List Accip., pt, 

 1, 1919, 15, part. — Micrastur brachypterus brachypterus Todd and Carriker, Ann; 

 Carnegie Mus., xiv, 1922, 159 (Bonda, Negiange, Cincinati, Mematoco, Dibilla; 

 and Fundacion, Santa Marta, Colombia; crit.).- — Circaetus (Herpetotheres) 

 brachypterus Kaup, Mus. Senckenb., iii, Heft 3, 1845, 260. — -Circaetus brachypterus 

 Kaup, Isis, 1847, 258 (monogr.), 368, 376, 380; in Jardine's Contr. Orn., 1850, 

 71." — Rhynchomegus brachypterus Bonaparte, Rev. Mag. Zool., vi, 1854, 537. — 

 Climacocercus brachypterus Burmeister, Syst. tlbers. Th. Bras., ii, 1856, 88. — 

 Carnifex naso Lesson, ficho du Monde Savant, ann. 9, 1842, 1081; Rev. Zool., 

 1842, 379. — Circaetus (Herpetotheres) leucomelas Kaup, Mus. Senckenb., iii, Heft 

 3, 1845, 260 (South America).- — Micrastur semitorquatus semitorquatus Peters, 

 Check-list Birds of World, i, 1931, 277. 



^* Micrastur melanoleucus buckleyi Swann, Synopt. List Accip., pt. 2, 1919, 

 Addenda et Corrigenda (pt. 1), 15 (Sarayacu, e. Ecuador; coll. Brit. Mus.); 

 Synop. Accip., pt. 1, 1921, 25; Monogr. Birds of Prey, ii, 1933, 142; Chapman, 

 Bull. Amer. Mus. Nat. Hist., Iv, 1926, 221 (Rfo Suno, San Jose, and below Baeza, 

 Ecuador). — Micrastur melanoleucus Lonnberg and Rendahl, Ark. Zool., xiv, 1922, 

 33 (Gualeaand Nanegal, Ecuador). — Micrastrir semitorquatus bztcfcZej/z Peters, Check- 

 list Birds of World, i, 1931, 277. 

 839094—50 37 



