808 Annals of the Carnegie Museum. 



610. Oporornis Philadelphia (Wilson). 



Sylvia Philadelphia Wilson, Am. Orn. f II, 1810, 101, pi. 14, fig. 6 (near Phila- 

 delphia, Pennsylvania, June). 



Geothlypis Philadelphia Lawrence, Ann. Lye. N. Y., IX, 1868. 94 (Angostura 

 and Dota [F. Carmiol]). — Frantzius, Jour, fiir Orn., 1869, 294 (Costa Rica). 



— Salvin and Godman, Biol. Centi.-Am., Aves, I, 1881, 154 (Costa Rican 

 references). — Sharpe, Cat. Birds Brit. Mus., X, 1885, 366 (Angostura 

 [Carmiol]). — Cherrie, Auk, VII, 1890, 336 (San Jose, rare; last seen Apr. 27, 

 1890, first return for 1890, Sept. 1); IX, 1892, 22 (San Jose; not common 

 from Sept. 15 to April 1). 



Oporornis Philadelphia Ridgway, Birds N. and Mid. Amer., II, 1902, 628 (eastern 

 U. S. and British Provinces; south in winter to Nicaragua, Costa Rica, Chi- 

 riqui, and Colombia). — ■ Bangs, Auk, XXIV, 1907, 306 (El Pozo de Terraba, 

 April 11-27, three specimens [Underwood]). 



U. S. Nat. Museum: Guayabo, March 18, 1908 (Ridgway and Zeledon), 



San Jose (Cherrie). 

 Am. Mus. Nat. History: San Jose, Sept. 30 (Underwood). 

 Bangs Collection: Cerro de Santa Maria, Jan. 4; San Jose, Oct. 20; 



Boruca, April 27 (Underwood). 

 Carnegie Museum: Escazu, March 19; Juan Vifias, March 16 and 20 



(Underwood); Guapiles, Jan. 11 and 20; Cuabre, March 2; Rio Sicsola, 



Sept. 24 and Oct. 7; Peralta, Nov. 10 (Carriker). Ten skins. 



This warbler is fairly common during the winter in the Caribbean low- 

 lands, but rare in the highlands and on the Pacific slope. It seems to 

 prefer the cool damp forests of the eastern side to the dry conditions which 

 prevail in other regions after December 1. 



611. Oporornis formosa (Wilson). 



Sylvia formosa Wilson, Am. Orn., Ill, 1811, 85, pi. 25, fig. 3 (Kentucky). 

 Oporornis formostis Baird, Rep. Pacific Railway Surv., IX, 1858, 247. — Law- 

 rence, Ann. Lye. N. Y., IX, 1868, 94 (Dota Mts. and Angostura [F. Carmiol]). 



— Frantzius, Jour, fiir Orn., 1869, 293 (Costa Rica). 



Oporornis formosa Salvin and Godman, Biol. Centr.-Am., Aves, I, 1881, 148 

 (Costa Rican references). — Sharpe, Cat. Birds Brit. Mus., X, 1885, 348, 

 653 (no Costa Rican specimens). — Cherrie, Auk, IX, 1892, 21 (San Jose, 

 Oct. 7, one 9); Expl. Zool. en C. R., 1891-2, 1893, 22 (Boruca, two speci- 

 mens). — Ridgway, Birds N. and Mid. Amer., II, 1902, 622 (eastern United 

 States, south in winter to Cuba (accidental), and through southern Mexico 

 and Central America to northern Colombia). — Bangs, Auk, XXIV, 1907, 

 306 (El Pozo de Terraba, April 4 to 17, two cT's [Underwood]). 



Geothlypis formosa Cherrie, Auk, VII, 1890, 336 (one skin in Museo Nac. de 

 C. R., without date). 



Opornis formosa Underwood, Ibis, 1896, 434 (Miravalles). 



