Carriker : List of the Birds of Costa Rica. 899 



paler and indistinctly defined. The mandible is also more or less yellow." 

 (W. E. C. Todd.) 



Found throughout the highlands wherever sufficient altitude is attained, 

 the bird rarely going below 5,000 feet, and ranging up to timber-line. It 

 breeds abundantly on the volcanoes Irazu and Turrialba between 8,000 

 and 10,000 feet. I found it fairly common also at La Hondura and Ujurras 

 de Terraba at about 5,000 to 6,000 feet. It is usually to be met with 

 in pairs, always in the thick forest, on the ground or in the low bushes, 

 hopping about actively, not at all shy and always rather silent. Breeding 

 begins about April 15, four nests being taken, on April 16, 17, 18, 

 and 19 respectively. Three nests contained but one egg each, the fourth 

 two. 



The nests are rather large and bulky, built of coarse grass and bamboo 

 leaves, lined with finer blades of bamboo, and placed in low bushes in the 

 forest. The eggs are pale bluish-white, unspotted. Average measure- 

 ments: 24.8X16. 1 mm. 



735. Atlapetes gutturalis (Lafresnaye). 



Arremon gutturalis Lafresnaye, Rev. Zool., 1843, 98 (Colombia, type in coll. 

 Bost. Soc. Nat. Hist.). 



Atlapetes chrysopogon Cabanis, Jour, fur Orn., i860, 414 (Costa Rica [Frantzius 

 and Hoffmann]); 1861, 94 (do.). 



Buarremon chrysopogon Cassin, Proc. Ac. Nat. Sci. Phila., 1865, 169 (Dota, July 

 24, 1864 [J. Carmiol]). — Lawrence, Ann. Lye. N. Y., IX, 1868, 10 (Quebrada 

 Honda [Frantzius], San Jose, and Dota [J. Carmiol]).— Frantzius, Jour, fur 

 Orn., 1869, 300 (San Jose, Dota, Quebrada Honda). — Boucard, Proc. Zool. 

 Soc. Lond., 1878, 56 (San Jose and Cartago). — Zeledon, Cat. Aves de C. R., 

 1882, 8. — Nutting, Proc. U. S. Nat. Mus., V, 1882, 495 (Volcan de Irazu). 



Buarremon gutturalis Salvin, Biol. Centr.-Am., Aves, I, 1884, 321 (Irazu 

 [Rogers], Dota Mts. [Carmiol and Frantzius], Quebrada Honda and San Jose 

 [Frantzius], Tucurriqui [Arce]). — Sclater, Cat. Birds Brit. Mus., XI, 1886, 

 259 (San Jose [Carmiol], Irazu [Rogers], Tucurriqui [Arce]). — Zeledon, An. 

 Mus. Nac. de C. R., I, 1887, no (San Jose, Cartago, and Cervantes de Car- 

 tago). — Cherrie, Proc. U. S. Nat. Mus., XIV, 1891, 532 (crit.); Auk, IX, 

 1892, 25 (San Jose; descr. of nest and eggs and young). 



Atlapetes gutturalis Ridgway, Birds North and Mid. Am., I, 1901, 461 (high- 

 lands of Guatemala to Colombia). 



U. S. Nat. Museum: San Jose (Ridgway and Zeledon) (Cherrie) (Under- 

 wood), El Copey, La Lagunaria, and Santa Maria de Dota (Basulto), 

 Coliblanco (Ridgway), Cartago (Cooper). 



Bangs Collection: Irazu and San Jose (Underwood). 



C. H. Lankester Collection: Cachi. 



