674 Annals of the Carnegie Museum. 



Microtriccus semiflavus Ridgway, Birds N. and Mid. Amer., IV, 1907, 791 

 (southern Mexico to Costa Rica: Pozo Azul de Pirris). — Bangs, Auk, 

 XXIV, 1907, 303 (Boruca, one $ [Underwood]). 



Bangs Collection : Pozo Azul de Pirris, two specimens ; El General 



de Terraba, one (Underwood). 

 Carnegie Museum; Boruca, d", July 23, 1907 (Carriker). 



This Microtriccus is evidently confined to the Pacific lowlands in 

 Costa Rica, its place being taken by M. briinneicapillus on the Carib- 

 bean side. I did not see more than one bird while in the Terraba Valley, 

 which I secured. Underwood secured one bird at Boruca the previous 

 year, one the same year at El General and two at Pozo Azul some 

 time previously. I do not think there are specimens from Costa Rica 

 in the U. S. National Museum, and probably the first specimen of 

 the species taken in Costa Rica is the one in Mr. Bangs' collection, col- 

 lected at P6zo Azul de Pirris, June, 1902, by Underwood. 



420. Carpodectes antoniae Zeledon. 



Carpodectes antonice. " Zeledon MS.," Ridgway, Ibis, 5th ser., II, 1884, 27, 28, 

 pi. 2 (Pozo Azul de Pirris; coll. U. S. Nat. Mus.); Proc. U. S. Nat. Mus., 

 VI, 1883, 410 (Pozo Azul de Pirris, May, 1883 [Juan Zeledonl; reprint of 

 descr.); X, 1887, 20 (descr. adult female); Condor, VII, 1905, 155, in text 

 (Pigres). — Zeledon, An. Mus. Nac. de C. R., I, 1887, 118 (Pozo Azul de 

 Pirris). — Sclater, Cat. Birds Brit. Mus., XIV, 1888, 389 (no specimens). 

 — Salvin and Godman, Biol. Centr.-Am., Aves, II, 1891, 141 (Costa Rican 

 references). — Ridgway, Birds N. and Mid. Amer., IV, 1907, 789 (Pacific 

 slope of western Panama and Costa Rica: Pigres, and Pozo Azul de Pirris). 



Bangs Collection : Pozo Azul de Pirris. Several specimens (Under- 

 wood). 

 Carnegie Museum : Pozo Azul de Pirris (Carriker) : S\ May 20, i 902. 

 This beautiful species is found only in southwestern Costa Rica, 

 south of the Rio Grande de Tarcoles (?), and has thus far been taken 

 only in the valley of the Rio Grande de Pirris. Neither Cherrie, 

 Underwood, nor myself found it in the Terraba region. It is much 

 rarer than its eastern representative, C. nitidus, and has a much more 

 restricted range. The single specimen which I took at Pozo Azul de 

 Pirris was alone, feeding in a low tree in company with some honey- 

 creepers. I saw no others. 



421. Carpodectes nitidus Salvin. 



Carpodectes nitidus Salvin, P. Z. S., 1864, 583, pi. 36 (Tucurriqui, Costa Rica 

 [Arce]). — Lawrence, Ann. Lye. N. Y., IX, 1868, 117 (Tucurriqui [Arce]). — 



