Carriker : List of the Birds of Costa Rica. 489 



ern portion of Costa Rica, around the eastern side of the Gulf of 

 Nicoya, the Nicoya Peninsula, and Guanacaste, north to Nicaragua. 

 It is very abundant at Miravalles, more so than at perhaps any other 

 locality. They feed on the so-called " guava " trees. 



I was unable to compare Costa Rican specimens of this species with 

 skins of authentic albifrons from the type locality in Mexico. Mr. 

 W. DeWitt Miller described a supposedly small race of the species from 

 southeastern Mexico, and suggested that Costa Rican birds were the 

 same. They may prove to be distinct from true albifrons, but for the 

 present I have left them without separation, which, if made, would 

 have to be based entirely on size, a doubtful character in this family. 



196. Pionus senilis (Spix). 



Psittacus senilis Spix, Av. Bras., I, 1824, 42. 



Pionus senilis Wagler, Monogr. Psitt., 1832, p. 604. — Cabanis, Jour, iiir 

 Orn., 1862, 335 (C. R. ). — Lawrence, Ann. Lye. N. Y., IX, 1868, 131 

 (San Jose [Frantzius], Barranca [J. Carrniol] ). — Frantzius, Jour, fiir Orn., 

 1869, 336 (Or6si and Tucurriqui). — Boucard, P. Z. S., 1878, 46 (San 

 Carlos, common). — Zei.edom, An. Mus. Nac. de C. R., I, 1887, 124 (Ala- 

 juela, Zarcero de Alajuela, Las Trojas, Barranca, Jimenez, Monte Redondo). — 

 Cherrie, Expl. Zool. en C. R., 1891-2, 1893, 49 (Lagarto, Boruca and 

 Buenos Aires de Terraba). — Salvadori, Cat. Birds Brit. Mus., XX, 1891, 

 331 (Angostura [J. Carrniol], San Jose [M. L. Calleja]). — Salvin and God- 

 man, Biol. Centr. -Am., Aves, II, 1897, 595 ( Mexico to Costa Rica). — Bangs, 

 Auk, XXIV, 1907, 292 (Paso Real de Terraba [Underwood]). 



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



Bonilla (Basulto). 

 Bangs Collection : Pozo Azul de Pirris and El General de Terraba 



(Underwood). 

 C. H. Lankester Collection : Guacimo. 

 Carnegie Museum: Guapiles (Carriker and Crawford), Pozo Azul de 



Pirris, Boruca (Carriker). 



The most widely distributed parrot of Costa Rica, being found over 

 the whole extent of the Caribbean lowlands as well as the western 

 portion of the central plateau and the Pacific slope. It does not seem 

 to be present, at least in any great numbers, in Guanacaste, for we 

 have no record of its having been taken there. It is abundant from 

 Puntarenas southward, especially in the Terraba Valley. 



This species does not frequent the heavy forest as much as some of 

 the others, preferring the edges of the "sabanas," streams, scattering 

 trees in pastures, etc. They are very shy and hard to approach within 

 gunshot, unless there is good cover intervening. 



