Carriker : List of the Birds of Costa Rica. 757 



Thryophilus rufalbus Lawrence, Ann. Lye. N. Y., IX, 1868, 92 (San Mateo 

 [Cooper]). — Salvin and Godman, Biol. Centr.-Am., Aves, I, 1880, 82, 

 part (Volcan de Irazu [Rogers], Bebedero [Arce]). — Sharpe, Cat. Birds Brit. 

 Mus., VI, 1 88 1, 212, part (Costa Rica [Van Patten]). — Nutting, Proc. U. S. 

 Nat. Mus., V, 1882, 390 (La Palma de Nicoya; habits, song). 



Thryothorus rufalbus castanonotus Ridgway, Proc. U. S. Nat. Mus., X, 1887, 

 508 (Angostura, Costa Rica [Zeledon]; type in coll. U. S. Nat. Mus.). 



Thryophilus rufalbus castanonotus Zeledon, An. Mus. Nac. de C. R., I, 1887, 

 105 (Monte Redondo, Alajuela, and Pozo Azul de Pirris). — Ridgway, Proc. 

 Bost. Soc. Nat. Hist. XXIII, 1888, 386, in text (type from "Angostura," 

 Costa Rica). ■ — Cherrie, Proc. U. S. Nat. Mus., XIV, 1891, 519 (Costa 

 Rica; crit.); Expl. Zool. en C. R., 1 891-2, 1893, 10 (Lagarto, four specimens), 

 — Ridgway, Birds N. and Mid. Amer., Ill, 1904, 633 (Nicaragua to northern 

 Colombia; — Costa Rica: Angostura, San Jose, San Mateo, Monte Redondo, 

 Alajuela, Bebedero, Volcan de Irazu, Lagarto, Pozo Azul de Pirris, Guaitil, 

 La Palma de Nicoya). — Bangs, Auk, XXIV, 1907, 305 (Boruca, Paso Real, 

 and Lagarto de Terraba [Underwood]). 



U. S. Nat. Museum: Monte Redondo and Alajuela (Alfaro), Pozo Azul 



de Pirris, and Sarchi (Underwood). 

 Acad. Nat. Sci. Philadelphia: Miravalles and Bebedero (Underwood). 

 Bangs Collection: Tenorio, Cerro de Santa Maria, Bolson, Miravalles, 



and Pozo Azul de Pirris (Underwood). 

 Carnegie Museum: Pozo Azul de Pirris, Esparta, Miravalles, Bebedero 



(Carriker). Nine skins. 



The range of the present species covers the whole of the Pacific slope 

 and lowlands from sea-level up to at least 4,500 feet. A single record (the 

 type for the subspecies) comes from Angostura, on the Reventazon River, 

 on the Caribbean slope at about 1,800 feet. This bird was taken by Zele- 

 don and the locality is without a doubt correct. I believe it is out of the 

 regular range of the bird, however, which is confined to the highlands and 

 Pacific slope. The most of the birds which I met with were found in the 

 forest near a small creek, where the trees were rather open, letting in con- 

 siderable light. Two nests were taken, one at Pozo Azul de Pirris, May 

 11, 1902, containing four fresh eggs; the other at Esparta, June 6, 1907, 

 with four fresh eggs. 



The nest is almost an exact counterpart of that of T. castaneus costari- 

 censis, being made of grass and rootlets, elbow-shaped, and placed in the 

 fork of a small tree ten feet above the ground. The eggs are pale robin's- 

 egg blue, unmarked. Measurements: 22 to 23 X15 to 16 mm. 



538. Thryophilus pleurostictus ravus Ridgway. 



Thryothorus pleurostictus (not of Sclater, i860) Baird, Rev. Amer. Birds, 1864, 

 123, part (Gulf of Nicoya). 



