FAMILY THRAUPIDAE 



411 



TANGARA FLORIDA (Sclater and Salvin): Emerald Tanager, 

 Tangaro Esmeraldino 



Calliste florida P. L. Sclater and Salvin, 1869, Proc. Zool. Soc. London, p. 416, 



pi. 28. (Costa Rica.) 

 Calospiza florida arcaei Ridgway, 1901, Proc. Washington Acad. Sci., 3, p. 149. 



(Yeragna, Panama.) 

 Tangara florida auriceps Chapman, 1914, Bull. Amer. Mus. Nat. Hist., 33, p. 188. 



(Buenavista, alt. 1200 ft., Narino, Colombia.) 



Small; brilliant light green, streaked with black on upper surface; 

 male with hindcrown and rump bright yellow; undersurface bright 

 light green. 



Description. — Length 106-117 mm. Adult male, lores, base of bill, 

 and chin black; top and rear of crown glossy dark yellow; rest of 

 crown, band across nape, and orbital region glossy yellow-green; patch 

 on auriculars black; upper back black, with feathers edged glossy light 

 green, creating streaked effect; lower back, rump, and upper tail co- 

 verts dark yellow; wings black, with coverts tipped and outer webs of 

 secondaries edged light green; rectrices black, with outer webs very 

 finely edged light green; undersurface light green, with center of belly 

 to undertail coverts light yellow; underwing coverts grayish. 



Adult female, like male, but yellow absent from head, replaced by 

 yellow-green. 



Juvenile, like female, but duller. 



Measurements. — Males (10 from Costa Rica, Panama, and Co- 

 lombia), wing 64.2-67.3 (65.9), tail 31.1-40.5 (37.2), culmen from 

 base 10.4-13.7 (11.6), tarsus 15.2-16.4 (15.9) mm. 



Females (7 from Costa Rica and Colombia), wing 62.0-66.2 (63.5), 

 tail 35.8-39.7 (37.9), culmen from base 10.2-13.3 (11.7), tarsus 14.7- 

 16.8 (15.9) mm. 



Resident. Uncommon to locally fairly common in humid forest and 

 forest borders in foothills on the entire Caribbean slope between 300 

 and 900 m and on the Pacific slope in foothills from eastern Province 

 of Panama (Cerro Azul/Jefe area) east through Darien (Ridgely, 

 1976, p. 317). R. Hinds collected a pair at 720 m on the Rio Chan- 

 guena, Bocas del Toro, in September 1961, and W. W. Brown, Jr., 

 took a male at 600 m on the Caribbean slope of the Volcan de Chiriqui 

 on June 4, 1901. In Veraguas, it has been collected at Rio Calovevora 

 (Hellmayr, Field Mus. Nat. Hist., Zool. Sen, vol. 13, pt. 9, 1936, p. 

 96) , in the Province of Panama at Cerro Azul (750 m) , and in Darien 

 at Tacarcuna Village. Beyond Panama, it is found in Costa Rica and 

 western Colombia to northwestern Ecuador (two recent sightings, 

 Ridgely, in Hit. ) . 



