760 Annals of the Carnegie Museum. 



88, pi. 6, fig. 3. — Sharpe, Cat. Birds Brit. Mus., VI, 1881, 216 (Panama). 



— Zeledon, An. Mus. Nac. de C. R., I, 1887, 105 (Pozo Azul de Pirns). — 

 Cherrie, Proc. U. S. Nat. Mus., XIV, 1891, 520 (Costa Rica; crit.); Expl. 

 Zool. en C. R., 1 891-2, 1893, 11 (Palmar, Lagarto, Buenos Aires, Cabagra). 



— Ridgway, Birds N. and Mid. Amer., Ill, 1904, 627 (Veragua and south- 

 western Costa Rica: Pozo Azul de Pirris, Pozo Pital, Lagarto, Buenos Aires, 

 Palmar, Cabagra). — Bangs, Auk, XXIV, 1907. 305 (Boruca, Paso Real, 

 El Pozo, and Lagarto de Terraba [Underwood]). 



U. S. Nat. Museum: Pozo Azul de Pirris (Underwood), Pozo Pital (Cher- 

 rie). 

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

 wood). 

 Carnegie Museum: Pozo Azul de Pirris, El Pozo de Terraba, Boruca, and 

 Buenos Aires (Carriker). Ten skins. 



This beautiful wren enters Costa Rica from the southward and is found 

 only on the Pacific lowlands as farup as the valley of the Rio Grande de 

 Pirris, from sea-level up to not more than about 1,500 feet. It is com- 

 monest at lower altitudes, especially along the rivers and small streams, 

 where the birds are fond of hiding away in the low, vine-covered jungle. 

 I found them in the heavy forest also, where undergrowth abounded. 

 Unlike the following species, they are very shy, and are very difficult to 

 shoot; yet, in spite of their timidity, keep up a continuous scolding when 

 anyone is near them. I found one of their nests at Pozo Azul de Pirris, 

 not yet finished, and unfortunately shot the female as she left it, supposing 

 that it contained eggs. It was very similar to the nest of Thryophilus 

 thoracicus (see description under that species). 



541. Thryophilus castaneus costaricensis (Sharpe). 



Thryophilus castaneus Lawrence, Ann. Lye. N. Y., IX, 1868, 93 (Pacuare 

 [J. Carmiol], Angostura [F. Carmiol]). — Frantztus, Jour, fur Orn., 1869, 

 291 (Costa Rica). — Boucard, P. Z. S., 1878, 51 (San Carlos). — Salvin 

 and Godman, Biol. Centr.-Am., Aves, I, 1880, 88, part (Tucurriqui [Arce]). 



Thryophilus costaricensis Sharpe, Cat. Birds Brit. Mus., VI, 1881, 217 (Costa 

 Rica [Boucard]). — Zeledon. An. Mus. Nac. de C. R., I, 1887, 105 (Jimenez 

 and Rio Siicio). — Cherrie, Proc. U. S. Nat. Mus., XIV, 1891, 519 (Costa 

 Rica; critical). — Richmond, Proc. U. S. Nat. Mus., XVI, 1893 (Rio Frio). 



Thryophilus castaneus costaricensis Hellmayr, Verh. K. K. Zool. Bot. Gesellsch. 

 Wien, 1901, 767, text. — Ridgway, Birds N. and Mid. Amer., Ill, 1904, 625 

 (Nicaragua and eastern Costa Rica: Pacuare, Jimenez, Limon, Rio Frio, 

 Talamanca, " San Jose," Angostura, Tucurriqui, Rio Siicio). 



U. S. Nat. Museum: Bonilla and Jimenez (Alfaro), Jimenez (Cherrie) 

 (Verrill), Reventazon (Carranza), Guayabo and Turrialba (Ridgway). 

 Bangs Collection: Carrillo and La Vijagua (Underwood). 



