Carriker : List of the Birds of Costa Rica. 609 



collectors have ever taken it in that region, nor are there other records 

 from the Pacific side. I am inclined to doubt the correctness of 

 Zeledon's record, and think that it is confined strictly to the Carib- 

 bean side, at least in Costa Rica. 



It seems that a few immature males of this species have a slate-gray 

 phase, resembling very much specimens of M. axillaris of South 

 America. I recorded two such birds as M. axillaris (see synonymy 

 above), and find three specimens of the same kind in a large series 

 from La Vijagua. My birds were taken on the Sicsola river. 



This species is strictly arboreal in its habits and is not usually seen 

 near the ground. They go about in small bands in company with 

 Formicivora boucardi and other small woodland birds. They are 

 rather noisy, constantly twittering and chirping after the manner of 

 Formicivora. 



344. Myrmotherula menetriesi schisticolor (Lawrence). 



Myrmothera menetriesi D'Orbigny, Voy. Am. Mer., Ois., 184 (Bolivia). 



Myrmotherula menetriesi Sclater, P. Z. S., 1858, 237. — Boucard, P. Z. S., 

 1878, 61 (Juan Vinas). — Zeledon, An. Mus. Nac. de C. R., XV, 1890, 240 

 (Pozo Aziil de Pirris and Barranca). — Sclater, Cat. Birds Brit. Mus., XV, 

 1890, 240, part (Dota Mts. [Carmiol]). — Salvin and Godman, Biol. Centr.- 

 Am„ Aves, II, 1892, 211, part (Guatemala to Bolivia; Costa Rican refer- 

 ences). — Cherrie, Expl. Zool. en C. R., 1890-1, 1893, 41 (Lagarto, Boruca, 

 and Terraba). — Bangs, Auk, XXIV, 1907, 296 (Boruca and El Pozo de 

 Terraba [Underwood]). 



Myrmotherula modesta Lawrence, Ann. Lye. N. Y., IX, 1868, 108 (Grecia 

 [F. Carmiol]; 9 of M. menetriesi schisticolor). 



Formicivora schisticolor Lawrence, Ann. Lye. N. Y., VIII, 1867, 172 (Turri- 

 alba [F. Carmiol]); IX, 1868, 108 (Turrialba and Barranca [F. Carmiol]). 



Myrmotherula menetriesi schisticolor Ridgway MS., April, 1909. 



U. S. Nat. Museum : Naranjo de Cartago (Cooper), Pozo del Pital 



(Cherrie), Pozo Azul de Pirris (Zeledon), La Lagunaria de Dota 



(Basulto). 

 Bangs Collection : La Vijagua, El General de Terraba, and Tenorio 



(Underwood). 

 Fleming Collection : Carrillo and Pozo Azul de Pirris (Underwood). 

 Carnegie Museum : Volcan de Turrialba, 2,000 feet (Carriker & 



Crawford) ; Pozo Azul de Pirris, Carrillo, Boruca (Carriker). 



Eight skins. 



Since the type of M. menetriesi d'Orbigny comes from Bolivia, it 

 is rather to be expected that Central American birds should be at least 



