674 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



Accip., pt. 4, 1920, 138; Auk, xxxviii, 1921, 364 (near M(5rida, Venezuela); 

 Synop. Accip., pt. 4, 1922, 191.— Hellmayr, Publ. Field Mus. Nat. Hist., 

 zool. sen, xii, No. 18, 1929, 455 (Piauhy, Brazil; crit.). — Peters, Check- 

 list Birds of World, i, 1931, 291.— Griscom, Bull. Amer. Mus. Nat. Hist., 

 Ixiv, 1932, 164 (Guatemala; Finca el Cipres) ; Bull. Mus. Comp. Zool., 

 Ixxviii, 1935, 302 (Panama: Chiriquf, Veraguas). — Belcher and Smooker, 

 Ibis, 1934, 594 (Trinidad; rare). — Roberts, Trop. Agr., xi. No. 4, 1934, 6 

 (Trinidad). — Steullet and Deautier, Obra Cincuentenario Mus. La 

 Plata, i, 1936, 483 (Argentine records, distr., and syn.). — Pinto, Rev. Mus. 

 Paulista, xxii, 1938, 90 (distr.; Brazil); Arquivos Zool. Est. Sao Paulo, xi, 

 1940, 13 (Cuiabd, Matto Grosso; spec). — Griscom and Greenway, Bull. 

 Mus. Comp. Zool., Ixxxviii, 1941, 118 (Lower Amazonia; Santar^m; spec). — • 

 Lehmann, Caldasia, ii, No. 7, 1943, 190 (spec. Purificaci6n, Tolima, Guaica- 

 ramo, Boyaca, La Esperanza, Magdalena, Moscopdn, Cauca; all Colombia). — 

 VAN RossEM, Occ Pap. Mus. Zool. Louisiana State Univ., No. 21, 1945, 29 

 (no basis for old published record from Sonora). 



Falco deiroleucos Sciilegel, Mus. Pays-Bas, ii. No. 2, livr. 1, 1862, 24, footnote 

 (monogr.). 



Hypotriorchis deiroleucus Bonaparte, Rev. Mag. Zool., vi, 1854, 535. — Salvin, 

 Ibis, 1861, 354 (Vera Paz, Guatemala); Proc Zool. Soc London, 1870, 215 

 (Bugaba, Veraguas, Panama). — Lawrence, Ann. Lye Nat. Hist. New 

 York, ix, 1868, 134 (La Palma de San Jose, Costa Rica). — Frantzius, 

 Journ. flir Orn., 1869, 369 (Costa Rica). — Pelzeln, Orn. Bras., Abth. 4, 

 1870, 397.— Cabanis, Journ. fiir Orn., 1874, 229 (Brazil).— Gurney, Ibis, 

 1882. 159, in text (crit.); List Diurn. Birds Prey, 1884, 103; Cat. Birds Prey, 

 1894, 29. 



Falco -peregrinus deiroleucus Stresemann, Journ. fiir Orn., Ixxii, 1924, 438 (tax.; 

 distr.). 



Falco peregrinus ? deiroleucus Kleinschmidt, Berajah, 1927, 116 (monogr.). 



Falco rufigularis (not of Daudin) Gray, List Spec. Brit. Mus., 1844, 54. 



Hypotriorchis rufigularis (type error) Sclater and Salvin, Proc. Zool. Soc. 

 London, 1869, 252 (San Esteban, Venezuela). 



(?) Falco punctipennis Burmeister, Journ. fiir Orn., 1860, 242 (Biza de la Paz, 

 Pampas Argentina). 



Falco alhigularis (not of Daudin) Hartert, Nov. Zool., v, 1898, 501 (Paramba, 

 Ecuador). — Salvadori and Festa, Boll. Mus. Zool. Torino, xv, 1900, 31 

 (Gualaquiza; San Jos6, Ecuador).— Goodfellow, Ibis, 1902, 222 (Santo 

 Domingo, Ecuador). 



Hypotriorchis melanogyne Bertoni, An. Cien. Paraguayos, i, 1901, 168 (Puerto 

 Bertoni, Alto Parand,, Paraguay). 



F[alco\ cassini (not of Sharpe) Hartert, Vog. pal. Fauna, ii, 1913, 1049, in text 

 (young; Ecuador). 



FALCO ALBIGULARIS ALBIGULARIS Daudin 



Central American White-throated Falcon 



Adult (sexes alike in coloration). — Forehead, crown, occiput, nape, 

 lores, cheeks, and auriculars dark slate black, the feathers very faintly- 

 paler at the tips; the cheeks and auriculars usually darker than 

 crown; scapulars, interscapulars, lesser and median upper wing 

 coverts, back, rump, and upper tail coverts with a bluish slate cast, 

 the feathers with dark slate-black shafts and mediobasal areas; in 



