Carriker : List of the Birds of Costa Rica. 777 



Bangs Collection: La Vijagua, two specimens (Underwood). 



C. H. Lankester Collection: El Hogar (Carriker). 



Carnegie Museum: El Hogar, March 18, 1907, d" and 9 (Carriker). 



Next to Vireo pollens, this is the rarest of the Costa Rican vireos. Very- 

 few specimens from Costa Rica are in existence, probably not more than 

 ten or a dozen in all. It is confined to the Caribbean lowlands and foot- 

 hills, up to about 1 ,800 feet. None have been taken higher than Angostura 

 or La Vijagua, both of which places are about 1,500 feet above sea-level. 

 During all the time I spent in the Caribbean lowlands I saw only the three 

 specimens which I secured, getting first one, and on the following day two 

 more, all at nearly the same spot, in the forest, about three miles north 

 of the railroad. They were up in the tops of rather low trees in a partially 

 open place, feeding much like some of the warblers or Euphonias. 



563. Pachysylvia viridiflava (Lawrence). 



Hylophilus viridiflavus Lawrence, Ann. Lye. N. Y., VII, 1861, 324 (Panama 

 R. R.). — Salvin and Godman, Biol. Centr.-Am., Aves, I, 1881, 208, pi. 13, 

 fig. 1 (no Costa Rican record). — Cherrie, Expl. Zool. en C. R., 1890-1, 

 1893, 16 (Buenos Aires, four specimens; first Costa Rican record). 



Hylophilus flavipes (not of Lafresnaye) Gadow, Cat. Birds Brit. Mus., VIII, 

 1883, 212, part (no Costa Rican record). 



Pachysylvia viridiflava Ridgway, Birds N. and Mid. Amer., Ill, 1904, 221 (Isth- 

 mus of Panama north to Veragua). — Bangs, Auk, XXIV, 1907, 305 (Boruca 

 lUnderwood]). 



U. S. Nat. Museum: Pigres, one 9 (Ridgway). 



Bangs Collection: El General de Terraba and Pozo Azul de Pirris (Under- 

 wood). 

 Carnegie Museum: Pozo Azul de Pirris, Buenos Aires de Terraba (Car- 

 riker). Seven specimens. 



This Pachysylvia was first taken in Costa Rica by Mr. Cherrie in 1 890-1 

 in the Terraba Valley, but his published record (Expl. Zool. en C. R., 

 1890-1, 1893, 16) seems to have been entirely overlooked by subsequent 

 writers. It is confined to the southwestern Pacific lowlands of Costa Rica, 

 from sea-level up to about 2,000 feet, and has been taken as far up the 

 coast as Pigres (Ridgway). It was not at all common even as far down 

 as the Pirris River, but in the upper Terraba Valley, especially about Buenos 

 Aires, I found it a fairly common bird in the low scrub around the borders 

 of the "sabanas" and in the second-growth woodland. It does not seem 

 to inhabit the heavy forest nearly so much as the other two Costa Rican 

 species of the genus. 



