232 BIRDS OF THE REPUBLIC OF PANAMA PART 4 



of upper surface, including wing coverts and tail yellowish olive-green; 

 remiges dusky, with all but outermost primary edged yellowish olive- 

 green, narrowly on primaries, broadly on secondaries; eye-ring white; 

 sides of face light bufTy brown; throat buffy whitish, faintly streaked 

 with very pale yellow; faint tinge of light brownish buff across chest 

 fused with pale yellow of rest of undersurface; sides and flanks pale 

 olive greenish; underwing coverts and inner web of underside of 

 remiges edged pale yellow. 



A female collected January 12, 1963, at Chiva Chiva, Canal Zone, 

 had the iris mouse brown; base of maxilla light fuscous-brown; tip of 

 culmen dull black; cutting edge of maxilla and mandible flesh color; 

 tarsus and toes neutral gray. 



Measurements. — Males (10 from Province of Panama and Canal 

 Zone), wing 51.7-55.6 (54.1), tail 39.5-43.8 (42.0), culmen from base 

 12.7-15.2 (13.8), tarsus 15.1-16.4 (15.8) mm. 



Females (7 from Province of Panama and Canal Zone), wing 48.6- 

 53.5 (50.9), tail 34.5-42.6 (39.1), culmen from base 12.3-13.7 (13.1), 

 tarsus 14.3-16.3 (15.4) mm. 



Resident. Common on the Pacific slope, in Code (Aguadulce 

 Salinas, Parita Bay), Herrera (southeast of Rincon) the Province of 

 Panama (Playa Coronado, Nueva Gorgona, Cerro Campana, Panama 

 City, Tocumen, Cerro Chame, Chico, Chepo) and in the Canal Zone 

 (Rio Velasquez, Pedro Miguel, Corozal, Fort Clayton) east to south- 

 western Darien (Garachine), extending into the Caribbean drainage 

 of the Rio Chagres to Culebra and Frijoles. It is also found on the 

 Caribbean slope of northern Colombia; other races are found in eastern 

 Colombia, Venezuela, and Trinidad. 



The single specimen from which this bird was named was sent to 

 Lawrence by John R. Galbraith and James McLeannan during the 

 "winter" of 1860-1861. Lawrence states that "the greater part of this 

 collection was made on the Atlantic side of Isthmus, as the investigation 

 of this section occupied their time until the season was too far advanced 

 to enable them to procure many species on the western slope, and in the 

 vicinity of Panama." He then lists 6 species that were taken on the 

 Pacific side. Since McLeannan is known to have collected in the vi- 

 cinity of Frijoles, and since the bird is known to occur at that point 

 through a specimen taken by Goldman, it seems appropriate to desig- 

 nate this place as the type locality. From present knowledge this is the 

 farthest point to which the bird penetrates in the Atlantic drainage. 



This small tropical vireo is found in open, thickety tree growth and 

 scrubby vegetation, sometimes low down in the branches and sometimes 



