BIRDS OF NORTH AND MIDDLE AMERICA 347 



slope, Honduras). — Lawrence, Aun. Lye. Nat. Hist. New York, ix, 1S68, 

 134, part (Turrialba, Costa Rica). — Frantzius, Journ. fiir Orn., xvii, 1869, 

 369, part (Costa Rica, part).— Gray, Hand-list, i, 1869, 30, No. 286, part 

 (Costa Rica, part). 



Asturina ruficauda Sclater and Salvin, Exotic Orn., 1869, 175, part (Costa 

 Rica); Proc. Zool. Soc. London, 1869, 133, part (Omoa, Honduras); 1870, 

 838 (coast of Honduras) ; Nom. Av. Neotr., 1873, 118, part (Central America, 

 part).— Salvin, Ibis, 1869, 317 (Costa Rica); 1889, 374, part (Ruatan and 

 Bonacca Islands, Honduras).— Gurnet, List. Diurn. Birds Prey, 1884, 72 

 part (crit.); Cat. Birds Prey, 1894, 25, part.— Sharpe, Handlist, i 1899, 

 257, in part (s. Nicaragua). 



Buteo {Rwpornis) magnirostris d. var. ruficauda Ridgway, Proc. Boston Soc. Nat. 

 Hist., xvi, 1873, 65 part (Costa Rica, part), 89, part (synonymy; descr.). 



Rwpornis magnirostris ruficauda Zeled6n, Cat. Aves Costa Rica, 1882, 27, in part; 

 Proc. U. S. Nat. Mus., viii, 1885, 112, in part (Costa Rica, part). — Swann, 

 Synopt. List Accip., pt. 2, 1919, 56, part; Synop. Accip., ed. 2, 1922, 93, part 

 (s. Nicaragua). 



Rwpornis ruficauda Gurnet, Ibis, 1876, 482 in text, part (crit.). — Ridgwat, Proc. 

 U. S. Nat. Mus., X, 1888, 583 (Truxillo, Honduras).— Richmond, Proc. U. S. 

 Nat. Mus., xvi, 1893, 521 (Rio Escondido, Nicaragua). — Salvin and God- 

 man, Biol. Centr.-Amer., Aves, iii, 1900, 76, part (Omoa, San Pedro, Trux- 

 illo, and Rio Segovia, Honduras; San Juan del Sur, Sucuya, Ometepe Island; 

 San Emilio, Lake Nicaragua, Volcin de Chinandega, and Rio Escondido, 

 Nicaragua; Turrialba, Volcan de Irazii, Talamanca, Costa Rica). — Carriker, 

 Ann. Carnegie Mus., vi, 1910, 459, in part (rare in Caribbean lowlands of 

 Costa Rica). 



Rupornis magnirostris arguta Peters and Griscom, Proc. New England Zool. 

 Club, xi, 1929, 46 (crit.; characters; distr.; orig. descr.). — Peters, Bull. Mus. 

 Comp. Zool., Ixix, 1929, 417 (Tela, Honduras; habits). — Bangs, Bull. Mus. 

 Comp. Zool., Ixx, 1930, 190 (type spec, in Mus. Comp. Zool.). — Huber, Proc. 

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

 Stone, Proc. Acad. Nat. Sci. Philadelphia, Ixxxiv, 1932, 299 (Honduras, 

 Cantarranas, Tela, Puerto Castilla, Omoa, Truxilla, Segovia River, Comaya- 

 gua, San Pedro, Ruatan Island). 



Buteo magnirostris argutus Peters, Check-list Birds of World, i, 1931, 237. — 

 Griscom, Bull. Mus. Comp. Zool., Ixxviii, 1935, 299 (Caribbean slope of w. 

 Panama). — Sassi, Temminckia, iii, 1938, 298 (Costa Rica, Waldeck, Bebe- 

 dero, 9 specs.; crit.). 



BUTEO MAGNIROSTRIS SINUS-HONDURI Bond 



Bonacca Insect Hawk 



Adult. — Similar to that of B. m. griseocauda, but darker, especially 

 above. "Pileum and hind neck blackish; remainder of upper parts 

 dusky grayish brown, the rectrices gray, barred with black; basal 

 portion of inner webs of primaries white to light rufous, barred with 

 black; sides of head and malar region grayish brown; chin and throat 

 white, indistinctly washed with buffy, with conspicuous blackish shaft- 

 streaks; upper breast dusky grayish brown, the feathers with indistinct 

 paler tips; lower breast white,' heavily barred with dull grayish brown, 

 the bars more or less rufous medially and the feathers tipped with buff; 



