822 Annals of the Carnegie Museum. 



U. S. Nat. Museum: Bonilla (Ridgway, Zeledon, Alfaro, Basulto), San 



Jose (Cherrie). 

 Bangs Collection: El General de Terraba, Pozo Aziil de Pirris, Cerro de 



Santa Maria, Carrillo, and vicinity of San Jose (Underwood). 

 (Underwood in litt.) : Reventazon, Pacuarito, Jimenez, Limon. 

 C. H. Lankester Collection: Cariblanco de Sarapiqui. 

 Carnegie Museum: Pozo Azul de Pirris, La Hondura, Carrillo, Guapiles 



(Carriker). Twenty skins. 



Mr. Bangs has separated the Costa Rican birds from true lucidus, re- 

 stricting that form to Guatemala, Honduras, and Salvador, and giving 

 Nicaragua, Costa Rica, and Panama as the range of isthmicus, saying 

 that northern Costa Rican specimens are inclined to be intermediate be- 

 tween the two forms, but nearer to isthmicus. 



The subspecies seems to be a good one, being based not only on color, 

 but on the smaller size and noticeably shorter bill of the southern birds. 

 This bird has a wide range, which covers the lowlands and slopes of both 

 coasts, extending up to and over a great deal of the central plateau. It 

 reaches its greatest abundance on the lower slopes of either side at an 

 elevation of from 1,000 to 2,000 feet, although it is taken at times in abun- 

 dance at much higher elevations. Like Euphonia and Tangara it seems 

 to make seasonal migrations of considerable extent, which explains its 

 apparent abundance or scarcity at the same places at different seasons. 



634. Cyanerpes cyaneus (Linnaeus). 



Certhia cyanea Linnaeus, Syst. Nat., ed. 12, I, 1766, 188 (based on Certhia ni- 

 groccBruleoque varia Edwards, Nat. Hist., II, 114, pi. 264, fig. 1). 



Ccereba cyanea Lawrence, Ann. Lye. N. Y., IX, 1868, 97 (Costa Rica; authority 

 of Cabanis). — Salvin and Godman, Biol. Centr.-Am., Aves, I, 1883, 248 

 (Costa Rican references; Bebedero [Arce]). — Sclater, Cat. Birds Brit. 

 Mus., XI, 1886, 32 (Bebedero [Arce]). — Underwood, Ibis, 1896, 435 (Mira- 

 valles). 



Arbelorhina cyanea Zeledon, An. Mus. Nac. de C. R., I, 1887, 108 (Las Trojas 

 de Puntarenas, San Jose, Alajuela, Pozo Azul de Pirris, and Monte Redondo). 

 — Cherrie, Expl. Zool. en C. R., 1891-2, 1893 (Lagarto, Boruca, Terraba, 

 Buenos Aires). 



Cyanerpes cyaneus Oberholser, Auk, XVI, 1891, 32 (crit.). — Ridgway, Birds 

 N. and Mid. Amer., II, 1902, 386 (continental tropical America in general 

 from Mexico to southeastern Brazil; only east of the Andes). — Bangs, 

 Auk, XXIV, 1907, 306 (Boruca, Paso Real, and Lagarto de Terraba [Under- 

 wood]). 



U. S. Nat. Museum: Pigres (Ridgway), San Jose (Cherrie). 



