Carriker : List of the Birds of Costa Rica. 739 



partly incubated eggs. The nest is constructed largely of grass and mud, 

 and placed in the fork of a tree about twenty feet from the ground. The 

 eggs are pale blue, the same color as those of the American Robin, and 

 measure 35X24 and 34X23 mm. 



513. Planesticus plebejus (Cabanis). 



T urdus plebejus Cabanis, Jour, fur Orn., i860 (pub. Jan., 1861), 323 (Costa 

 Rica [Frantzius]; coll. Berlin Mus.). — Frantzius, Jour, fur Orn., 1869, 

 290 (Costa Rica). 



Turdus plebeius Sclater, Cat. Am. Birds, 1862, 358 (Costa Rica). — Law- 

 rence, Ann. Lye. N. Y., IX, 1868, 91 (Dota, San Jose, and La Palma [Frant- 

 zius], Grecia and Cervantes [J. Carmiol]). — Boucard, P. Z. S., 1878, 50 

 (Navarro). — Salvin and Godman, Biol. Centr.-Am., Aves, I, 1879, 17 

 (Volcan de Irazu [Rogers]). — Seebohm, Cat. Birds Brit. Mus., V, 1881, 

 215. 



Merula plebeia Ridgway, Proc. U. S. Nat. Mus., V, 1882, 494 (Irazu [Nutting]). 

 — Zeledon, An. Mus. Nac. de C. R., I, 1887, 104 (Zarcero de Alajuela, 

 Volcan de Irazu). 



Planesticus plebejus Ridgway, Birds N. and Mid. Amer., IV, 1907, 122 (high- 

 lands of Panama and Costa Rica: San Jose, Vols, de Irazu, de Turrialba, de 

 Poas, Navarro, Dota, El Zarcero, Barranca, La Palma de San Jose, Cervantes, 

 Grecia, Coliblanco). 



U. S. Nat. Museum: Las Vueltas de Dota (Basulto). 



Bangs Collection: Volcan de Irazu and San Pedro (Underwood). 



C. H. Lankester Collection: Cariblanco de Sarapiqui. 



Carnegie Museum: Tierra Blanca, Volcan de Irazu, La Hondura, and 



Ujurras de Terraba (Carriker). Eighteen skins. 



This thrush is found throughout the highlands of the whole of Costa 

 Rica, between the altitudes of 3,000 and 7,000 feet, but is most abundant 

 on the Caribbean watershed at about 4,000 or 5,000 feet. It is rarely, if 

 ever, taken above 7,000 feet. It inhabits the forest, frequenting the more 

 open parts, where the trees are large and there is not much thick jungle. 

 Its habits are quite like those of P. nigrescens, or P. migratorkis. 



514. Planesticus grayi casius (Bonaparte). 



Planesticus casius Bonaparte, Compt. Rend., XLI, 1855, 657 (Panama; type 

 in Brit. Mus.). 



Turdus grayi Cabanis, Jour, fiir Orn., i860, 323 (Costa Rica [Frantzius, Hoff- 

 mann, and Ellendorf]). — Baird, Review Am. Birds, 1864, 26, part (Costa 

 Rica). — Lawrence, Ann. Lye. N. Y., IX, 1868, 91 (San Jose and Barranca 

 [J. Carmiol], Quebrada Honda [Frantzius], Jour, fiir Orn., 1869, 290 (Lepanto, 

 Gulf of Nicoya). — Boucard, P. Z. S., 1878, 50 (San Jose; crit.; habits; 



