610 



Annals of the Carnegie Museum. 



subspecifically distinct. Lawrence described the Costa Rican bird as 

 Formicivora schisticolor in 1867, but his name has been universally 

 placed under the synonymy of M. ?nenetriesi. Mr. Ridgway, having 

 compared Costa Rican birds with those from South America has found 

 them to be different, and has set up Lawrence's name for the Central 

 American bird. 



This species has a wide range in Costa Rica, covering the whole of 

 the Caribbean slope between about 1,000 and 3,000 feet, as well as 

 the foothills and lowlands of the Pacific, where it is most abundant in 

 the southwestern portion of the country, especially in the Terraba 

 Valley. The habits of this species are very like those of the preced- 

 ing, except that it is more inclined to be solitary, not going about 

 in bands so much as does M. me lama. 



345. Formicivora boucardi virgata (Lawrence). 



Formicivora boucardi Sclater, P. Z. S., 1858, 300 (Acatepec, Mexico); Cat. 

 Birds Brit. Mus., XV, 1890, 254 (Peje and Angostura [Carmiol]). — Law- 

 rence, Ann. Lye. N. Y., I X, 1868, 108 (Angostura, " San Jose," and Pacuare 

 [J. Carmiol]). — Boucard, P. Z. S., 1878, 61 (San Carlos). — Zeledon, An. 

 Mus. Nac. de C. R., I, 1887, 115 (Pozo Azul de Pirris, Pacuare, Jimenez, 

 La Valsa). — Cherrie, Expl. Zool. en C. R., 1890-1, 1893, 43 (Palmar, La- 

 garto, Boruca, Buenos Aiies). — Salvin and Godman, Biol. Centr.-Am., 

 Aves, II, 1892, 216 (Mexico to Panama; Costa Rican references). — Bangs, 

 Auk, XXIV, 1907, 296 (Boruca, Paso Real, El Pozo, and Lagartode Terraba 

 [Underwood]). 



Formicivora virgata Lawrence, Ibis, 1863, 182 (Panama). 



Formicivora boucardi virgata Ridgway MS., April, 1909. 



U. S. Nat. Museum : La Concepcion de Jimenez and Talamanca 



(Cherrie), Pozo Azul de Pirris (Zeledon), Jimenez (Alfaro and 



Carranza). 

 Bangs Collection : El General and Buenos Aires de Terraba, Pozo 



Azul de Pirris, La Vijagua (Underwood). 

 Fleming Collection : Carrillo (Underwood). 

 Carnegie Museum : Guapiles (Carriker & Crawford) ; Pozo Azul de 



Pirris, Rio Sicsola, El Hogar, El Pozo de Terraba (Carriker). 



Ten skins. 



Upon a comparison of Costa Rican specimens with birds from 

 British Honduras, the difference is very apparent, the southern speci- 

 mens being distinguished by having the pileum, nape, and scapulars 

 black (in boucardi ashy), while the ashy abdomen and breast of the 

 northern birds is almost wanting, the entire under parts being black. 

 F. b. virgata is also smaller, 



