696 Annals of the Carnegie Museum. 



Bangs Collection: Bolson, Dec. 25; Tenorio, Feb. 7 (Underwood). 

 Carnegie Museum: Guapiles, March 30, 1903 (Carriker & Crawford). 

 A rare migrant in Costa Rica, most abundant on the Pacific coast, and 

 rarely found in the highlands of the interior. I secured but one specimen 

 on the Caribbean slope, at Guapiles, March 30. 



451. Sayornis nigricans amnicola (Bangs). 



? Sayornis nigricans (not Tytannula nigricans Swainson ?) Bonaparte, Compt. 



Rend., XXXVIII, 1854, 657 (Nicaragua). 

 Aulanx aquaticus Cabanis, Jour, fur Orn., 1861, 247 (Costa Rica [Frantzius 



and Hoffmann]). 

 Sayornis aquatica (not of Sclater and Salvin) Lawrence, Ann. Lye. N. Y., IX, 



1868, no (Costa Rica [J. Carmiol]). — Frantzius, Join, fur Orn., 1869, 306 



(Cotta Rica). — Boucard, P. Z. S., 1878, 62 (San Jose; habits). — Zeledon, 



An. Mus. Nac. de C. R., I., 1887, 115 (Alajuela and Navarro de Cartago). 



— Sclater, Cat. Birds Brit. Mus., XIV, 1888, 33, part (Costa Rica [Arce and 



Endres]). — Salvin and Godman, Biol. Centr.-Am., Aves, II, 1889, 65, part 



(Costa Rican references). — Alfaro, Paginas Illustradas, I, 1904, 505 (Costa 



Rica; nest and habits). 

 Sayornis nigricans var. aquaticus Baird, Brewer, and Ridgway, Hist. N. Amer. 



Birds, II, 1874, 340, part (Costa Rica). 

 Sayornis nigricans var. aquatica Ridgway, Am. Jour, Sci. and Arts, 1872, 456, 



part (Costa Rica). 

 Sayornis amnicola Bangs, Proc. N. Eng. Zool. Club, III, 1902, 37 (Boquete, 



Panama). 

 Sayornis nigricans amnicola Ridgway, Birds N. and Mid. Amer., IV, 1907, 601 



(highlands of Costa Rica: San Jose, Alajuela, San Pedro, Navarro, and 



western Panama). 



U. S. Nat. Museum: El Copey and Santa Maria de Dota (Basulto). 

 Bangs Collection: San Jose (Underwood). 



Fleming Collection: San Sebastian de San Jose, Carrillo (Underwood). 

 C. H. Lankester Collection: Cachi. 



The Costa Rican Phcebe is nearly as plentiful in the central highlands 

 of that country as the North American species is in the United States, 

 frequenting streams and cliffs and having the same habits. 



I observed it at Juan Vinas, Tucurriqui, and along the lower gorge of the 

 Rio Sucio above Carrillo, but never collected any specimens. 



452. Empidonax atriceps Salvin. 



Empidonax atriceps Salvin, P. Z. S., 1870, 198 (Volcan de Chiriqui, Panama 

 [Arce]). — Ridgway, Proc. U. S. Nat. Mus., VI, 413 (Birris [Coope;]; de- 

 scription). — Salvin and Godman, Biol. Centi.-Am., Aves, II, 1889, 79 

 (Costa Rican reference). — Ridgway, Birds N. and Mid. Amer., IV, 1907, 



