BIRDS OF NORTH AND MIDDLE AMERICA 381 



Asturina ghiesbrechtii Schlegel, Mus. Pays-Bas, ii, No. 5, livr. 1, 1862, 11, foot- 

 note, part (monogr.) ; No. 36, livr. 10, 1873, 104, part. 



Leucopternis ghiesbreghli Sclater and Salvin, Exotic Orn., pt. 8, 1868, 121, 

 part; Nom. Av. Neotr., 1873, 119, part (Panama; Central America, part). — 

 Salvin, Proc. Zool. Soc. London, 1870, 215 (Calovevora, Chitra;andBugaba, 

 Veraguas, Panama); Ibis, 1872, 242, part, 323 (Chontales, Nicaragua; 

 monogr.). — Gurnet, Ibis, 1876, 470, in text, part (crit.; variations of plum- 

 age); Cat. Birds Prey, 1894, 25, part. — Zeledon, Anal. Mus. Nac. Costa 

 Rica, i, 1887, 126 (Jimenez, Costa Rica). — Richmond, Proc. U. S. Nat. 

 Mus., xvi, 1893, 521 (Rfo Escondido, Nicaragua; habits). — Salvin and 

 Godman, Biol. Centr. Amer., Aves, iii, 1900, 82, part (Segovia River, Hon- 

 duras, and Matagalpa, Rio Grande, San Emilio, Chontales, Lake Nicaragua, 

 and Rio Escondido, Nicaragua; Cerro de la Candelaria; Naranjo, Reventaz6n, 

 Carrillo, and Jim6nez, Costa Rica; Bugaba, Calovevora, Chitra, Cordillera 

 de Tol6, and Lion Hill, Panama). — Carriker, Ann. Carnegie Mus., vi, 

 1910, 462 (Bonilla, La Vijagua, Ten6rio, Gudcimo, Gudpiles, El Hogdr, and 

 Miravalles, Costa Rica; habits). — Swann, Monogr. Birds Prey, i, 1930, 467, 

 part (monogr.). 



Leucopternis ghiesbrechti Ridgwat, U. S. Geol. and Geogr. Surv. Terr., ser. 2, 

 Bull. 2, 1876, 174, part (Panama).— Sharpe, Hand-list, i, 1899, 259, part.— 

 Bangs, Proc. New England Zool. Club, iii, 1902, 20 (Bogaba, Panama). 



Urubilinga ghiesbreghli Boucard, Proc. Zool. Soc. London, 1878, 44 (Naranjo de 

 Cartago, Costa Rica). 



Leucopternis ghiesbreghli costaricensis Sclater, Bull. Brit. Orn. Club, xxxix, 1919, 

 76 (Carrillo, Costa Rica; coll. Brit. Mus.). — Swann, Synopt. List Accip., 

 pt. 3, 1920, 115; Synop. Accip., ed. 2, 1922, 100.— Sturgis, Field Book 

 Birds Panama Canal Zone, 1928, 136 (descr.; habits; Panama).— Kennard 

 and Peters, Proc. Boston Soc. Nat. Hist., xxxviii, 1928, 449 (Almirante; 

 Panama; colors of soft parts).— Peters, Bull. Mus. Comp. Zool., Ixix, 1929, 

 417 (Laneetilla, Honduras; food habits); Bull. Mus. Comp. Zool., Ixxi, 1931, 

 310 (Almirante and Boquete Trail, Panama). — Griscom, Bull. Mus. Comp. 

 Zool., Ixxii, 1932, 314(Perme, Obaldia, Panama). — Huber, Proc. Acad. Nat. 

 Sci. Philadelphia, Ixxxiv, 1932, 212 (ne. Nicaragua; spec; colors). 



Leucopternis ghiesbrechti costaricensis Griscom, Bull. Mus. Comp. Zool., Ixix, 

 1929, 158 (Cana, Darien, Panama).— Heath, Ibis, 1932, 482 (Barro Colorado 

 Island, Panama). 



Leucopternis albicodis costaricensis Peters, Check-list Birds of World, i, 1931, 

 241 (distr.).— Griscom, Bull. Mus. Comp. Zool., Ixxviii, 1935, 299 (through- 

 out Panama). — Aldrich, Sci. Publ. Cleveland Mus. Nat. Hist., vii, 1937, 43 

 (Paracot^, Azuero Peninsula, Panama; spec). — Dugand, Caldasia, No. 3, 

 1941, 56 (Colombia; Rio Jurad6, Choco; spec). — Lehmann, Caldasia, No. 7, 

 1943, 187 (Guafcaramo; Boyacd; and Rfo Jurado, Choc6, Colombia; spec; 

 meas., plum.). 



leucopternis albicollis ghiesbreghti (du bus) 



Mexican White Hawk 



Adult (sexes alike). — Similar to that of Leucopternis albicoUis 

 costaricensis, but with the dark area on the inner primaries greatly 

 reduced to mere irregular bars and splotches on the outer webs; some- 

 times pure white; the primaries with the outer webs, as well as the 

 inner webs, basally white; all the wing coverts (including the greater 



