546 Annals of the Carnegie Museum. 



Z. S., 1878, 70 (San Jose and Volcan de Irazu). — Ridgway, Proc. U. S. Nat. 

 Mus., Ill, 1880, 315 (Costa Rica). — Zeledon, An. Mus. Nac. de C. R., I, 

 1887, 122 (El Naranjo de Cartago). — Salvin, Cat. Birds Brit. Mus., XVI, 

 1892, 384 (Costa Rica [Endres and Carmiol]). — Salvin and Godman, Biol. 

 Centr.-Am. Aves, II, 1892, 347 (Costa Rica and Panama). 

 Calliphlox bryanlce Hartert, Tierr., 1900, 198 (Costa Rica and Panama). 



U. S. Nat. Museum : Volcan de Irazu (Lizano). 



Bangs Collection : Volcan de Irazu, Escazu, and San Pedro del 



Mojon (Underwood). 

 C. H. Lankester Collection : Cachi. 

 Carnegie Museum : Volcan de Irazu (Carriker). Three skins. 



This bird is rather closely related to, and has the habits of Selas- 

 phorus, ranging over the higher portions of the plateau region, and up 

 the volcanoes to almost timber-line. It is most abundant, however, 

 from about 4,000 to 6,000 feet, frequenting shrubbery, the edges of 

 forests, bushy pastures, and roadsides, and usually keeps near the 

 ground. 



269. Trochilus colubris Linnaeus. 



Trochilus colubris Linnaeus, Syst. Nat., ed. 10, I, 1758, 120. — Lawrence, 

 Ann. Lye. N. Y., IX, 1868, 123 (Las Cruces de Candelaria [Zeledon]). — 

 Frantzius, Jour, fur Orn., 1869, 315 (La Candelaria, November). — Boucard, 

 P. Z. S., 1878, 70 (San Jose, one — rare). — Ridgway, Proc. TJ. S. Nat. Mus., 

 Ill, 1880, 314 (Costa Rica). — Zeledon, An. Mus. Nac. de C. R., I, 1887, 

 121 (C. R.). — Salvin, Cat. Birds Brit. Mus., XVI, 1892, 399 (Bebedero 

 [Arce], C. R. [Gould Coll.]). — Salvin and Godman, Biol. Centr.-Am., Aves, 

 II, 1892, 357 (C. R. references). — Cherrie, Auk, IX, 1892, 324 (San Jose, 

 very rare visitant). — Underwood, Ibis, 1896, 442 (Bagaces). — Hartert, 

 Tierr., 1900, 201 (Mexico to Veragua in winter). 



U. S. Nat. Museum: Santo Domingo de San Mateo, Feb. (Alfaro). 

 Bangs Collection: San Pedro del Mojon, October, 1897, 1899, 1904 



and 1906, seven specimens (Underwood). 

 Carnegie Museum: Juan Vinas, March 17 and 18, 1902, two cf ; Volcan 



de Irazu, April 3, 1902, cT juv. (Carriker). 



The Ruby-throated Hummingbird is probably a regular, though 

 rare, winter visitant in Costa Rica, arriving sometime in October and 

 probably leaving the latter part of March or first week in April. It 

 does not descend into the Caribbean lowlands, but keeps to the plateau 

 region and Guanacaste, in the northwestern part of the country. Its 

 habits while there seem to be the same as in the north. 



