Carriker : List of the Birds of Costa Rica. 693 



bangsi is found in Costa Rica only in the extreme southwestern portion, 

 from Chiriqui up to the foot of the Dota Mountains at most, even the 

 birds from Pozo Azul de Pirris being nigricapillus. M. I. bangsi can be 

 distinguished from nigricapillus by the very sooty pileum, which color is 

 abruptly defined posteriorly. 



446. Myiarchus lawrencei nigricapillus (Cabanis). 



Myiarchus lawrencei (not Muscicapa lawrenceii Giraud) Cabanis, Jour, fur Orn., 

 1861, 249 (Costa Rica [Frantzius, Hoffmann, and Ellendorf]). 



Myiarchus lawrencei Boucard, P. Z. S., 1878, 64 (San Jose, Cartago, and Juan 

 Vinas). 



Myiarchus lawrencii Lawrence, Ann. Lye. N. Y., IX, 1868, 115, 204 (Angos- 

 tura and Sarchi [F. Carmiol], Pacuare [J. Carmiol]). — Trantzius, Jour. 

 fiir Orn., 1869, 308 (Costa Rica). — Coues, Proc. Acad. Nat. Sci. Phila., 

 1872, 74 part (Grecia, Barranca, and Angostura). — Sclater, Cat. Birds 

 Brit. Mus., XIV, 1888, 256, part (Honduias). — Salvin and Godman, Biol. 

 Centr.-Am., Aves, II, 1889, 94 (Costa Rican references). 



M\yiai chus] nigricapillus Cabanis, Jour, fiir Orn., 1861, 250, in text (Costa Rica). 



Myiarchus nigricapillus Sclater, Cat. Am. Birds, 1862, 233 (Costa Rica); Cat. 

 Birds Brit. Mus., XIV, 1888, 257, part (San Jose and Pacuare [Carmiol], 

 Tucurriqui [Arce]. Irazu district [Rogers]). — Lawrence, Ann. Lye. N. Y., 

 IX, 1868, 115 (San Jose [J. Carmiol], Barranca and Grecia [F. Carmiol]). — 

 Frantzius, Jour, fiir Orn., 1869, 308 (Costa Rica). 



Myiarchus lawrencii var. nigricapillus Ridgway, Am. Jour. Sci. and Arts, 1872, 

 455, part. 



Myiarchus lawrencei nigricapillus Nutting and Ridgway, Proc. U. S. Nat. 

 Mus., VI, 1883, 384 (Nicaragua). — Zeledon, An. Mus. Nac. de C. R., I, 

 1887, 117 (San Jose, Cartago, Alajuela, Sarchi, and Las Trojas). — Cherrie, 

 Auk, IX, 1892, 251 (San Jose). — Nelson. Proc. Biol. Soc Wash., XVII, 

 1904, 44, (monogr.; Costa Rica). — Ridgway, Birds N. and Mid. Amer., IV, 

 1907, 644 (Honduras to Costa Rica: Guayabal, Barranca, Bebedero, Pozo 

 Azul, Sa^ Jose, Naranjo de Cartago, Cartago, Jimenez, Angostura, Grecia, 

 Sarchi, Pacuaiv.. Irazu, and Tucurriqui). 



U. S. Nat. Museum: Guayabo (Ridgway and Zeledon); Bonilla, Santa 



Maria de Dota (Basulto). 

 Bangs Collection: Pozo Azul de Pirris, Bolson, Tenorio, Cerro de Santa 



Maria, Coralillo, Guayabal, San Jose, and Bebedero (Underwood). 

 Carnegie Museum: Bebedero, Miravalles, Juan Vinas, Tierra Blanca, 



Pozo Azul de Pirris, Cuabre, Carrillo (Carriker) ; Guapiles (Carriker 



& Crawford). Sixteen skins. 



All Costa Rican specimens of M. lawrencei which I have been able to 

 examine, with the exception of birds from the Terraba Valley, are nigri- 

 capillus, and agree with birds from British Honduras, according to the 



