Carriker : List of the Birds of Costa Rica. 809 



Bangs Collection: La Vijagua, March 4; Tenorio, Jan. 28 to Feb. 1 ; Pozo 



Azul de Pirris, Feb. 20 (Underwood). Twelve skins. 

 Carnegie Museum: Guapiles, Jan 10; Rio Sicsola, Sept. 21 and Oct. 8; 

 El Hogar, Dec. 6 and Nov. 14 (Carriker). Five skins. 

 Apparently a fairly common migrant in Costa Rica, much more so than 

 many other warblers which reach there. It is met with in greater numbers 

 in the Caribbean lowlands than in any other part of the country, being 

 less common in the highlands. It is always found in the thick forest, 

 especially in brush and all kinds of undergrowth. 



612. Dendroica pensylvanica (Linnaeus). 



[Motacilla] pensylvanica Linnaeus, Syst. Nat. ed. 12, I, 1766, 33 (based on The 

 Red-throated Flycatcher, Muscicapa gutture rubro, Edwards, Gleanings Nat. 

 Hist., II 193, pi. 301). 



Dendroica pensylvanica Parker, Am. Nat., V, 1871, 168. — Cherrie, Auk, 

 VII, 1890, 336 (San Jose, Costa Rica, Sept. 28 to Apr. 24); Expl. Zool. en 

 C. R., 1891-2, 1893, 13 (Lagarto, Boruea, Terraba, Buenos Aires). — Ridg- 

 way, Birds N. and Mid. Amer., II, 1902, 589 (eastern U. S. and Canada, 

 south in winter through eastern Mexico and Central America to Isthmus 

 of Panama). — Bangs, Auk, XXIV, 1907, 306 (El Pozo de Terraba, April 6 

 and 9 (Underwood). 



Dendrceca pensylvanica Boucard, P. Z. S., 1878, 52 (San Carlos, Feb.). 



Dendroica pennsylvanica Frantzius, Jour, fur Orn., 1869, 293 (Costa Rica). — 

 Cherrie, Auk, VIII, 1891, 278 (San Jose; remarks on plumage). 



Dendrceca pennsylvanica Lawrence, Ann. Lye. N. Y., IX, 1868, 94 (Grecia 

 and Barranca [F. Carmiol]). — Salvin and Godman, Biol. Centr.-Am., Aves, 

 I, 1881, 131 (Angostura [J. Carmiol]). — Sharpe, Cat. Birds Brit. Mus., X, 

 1885, 285 (Irazii district [Rogers]). — Underwood, Ibis, 1896, 433 (Mira- 

 valles). 



Dendroica iclerocephala Cabanis, Jour, fur Orn., i860, 328 (Costa Rica). 



U. S. Nat. Museum: Guayabo, Feb. 9 to 18 (Ridgway and Zeledon); 

 Bonilla, April 8 to 10 (Basulto). 



Bangs Collection: Tenorio, Feb. 7; Cerro de Santa Maria, Jan. 5; La 

 Vijagua, Feb. 28; Bolson, Dec. 15; Boruea, Apr. 6 (Underwood). 



Fleming Collection: Carrillo, Oct. 19 to 29, Feb. 12; San Jose, Sept. 25 

 (Underwood). 



Carnegie Museum: Tierra Blanca, Apr. 11 ; Guacimo, Nov. 14; Gua- 

 piles, Jan. 19; La Hondura, Sept. 27; El Hogar, Dec. 12, Nov. 13, 18 

 (Carriker); Guapiles, March 9 to 28 (Carriker & Crawford); Jimenez, 

 Jan.; Juan Vinas, March 14 to 21 (Underwood). Sixteen skins. 

 The most abundant of the migrating warblers in Costa Rica, found from 



