Carriker : List of the Birds of Costa Rica. 795 



(Guaitil [J. Carmiol]). — Zeledon, An. Mus. Nac. de C. R., I, 1887, 107 

 (Sabanilla de Alajuela, Naranjo de Cartago, Dota (?)). 

 Basileuterus culicivorus culicivorus Ridgway, Birds N. and Mid. Amer., II, 

 1902, 753 (southern Mexico, Guatemala, and Costa Rica: Barranca, Guaitil, 

 Dota Mts., San Jose, Naranjo de Cartago, Monte Redondo, Sabanilla de 

 Alajuela). 



U. S. Nat. Museum: Guayabo (Ridgway and Zeledon), Juan Vinas 



(Cooper), Cedral de Asseri (Underwood), El Copey, La Lagunaria, and 



Santa Maria de Dota (Basulto). 

 Bangs Collection: Miravalles, Tenorio, Cerro de Santa Maria, La Vija- 



gua, El General (Underwood). 

 Carnegie Museum: Miravalles, Guaitil, La Estrella de Cartago, Juan 



Vinas, Ujurras de Terraba, Peralta (Carriker). Twenty-one skins. 



In "Birds of North and Middle America," Mr. Ridgway refers all Costa 

 Rican birds of this species to B. c. culicivorus, with the exception of speci- 

 mens from San Marcos, which he had not seen, and which Cherrie had 

 referred to B. c. godmani. 



I have been able to examine birds from points much farther south than 

 San Marcos (El General and Ujurras de Terraba) and find that while they 

 are not typical culicivorus they are nearer to that form than to godmani. 

 True godmani from Chiriqui is a very different bird, and when the two are 

 brought together the differences become very apparent, it having the en- 

 tire upper parts very olivaceous, with scarcely a trace of the gray which 

 is so prominent on culicivorus; it is also a much larger bird. 



It therefore becomes evident that all Costa Rican specimens collected 

 in the eastern and northern parts of the country are typical or nearly 

 typical B. c. culicivorus, while those from the southwestern region are 

 slightly intermediate between that form and B. c. godmani but with a 

 decided relationship to culicivorus rather than to godmani. 



This is a very common bird in nearly all parts of Costa Rica, from 600 



to 7,000 feet above sea-level. It is perhaps most numerous between 1,500 



and 4,000 feet, and is less abundant in the southwestern region than 



in any other part of the country. It is found not only in the forest, 



but in open woodland, isolated trees in pastures, and along roadsides. 



It is also often seen in small bands, as well as singly or in company with 



other species. 



590. Basileuterus melanotis Lawrence. 



Basileuterus melanotis Lawrence, Ann. Lye. N. Y., IX, 1868, 95 (Cervantes, 

 Costa Rica [J. Carmiol]; coll. U. S. Nat. Mus.; also Birris [Frantzius]). — 

 Frantzius, Jour, fur Orn., 1869, 294 (Costa Rica). — Siiarpe, Cat. Bird9 



