1917.] Chapman, Distribution of Bird-life in Colombia. 589 



Alto Bonito, 3; Juntas de Tamand, 1; N6vita, 1; San Jose, 1; Barba- 

 coas, 8; La Frijolera, 3; No vita Trail (6000 ft.), 1; Las Lomitas, 1; San 

 Antonio, 5; Cerro Munchique, 1; Gallera, 1; Cocal, 2; Ricaurte, 1; Mira- 

 flores, 3; Salento, 1. 



Measurements of Males. 



T. X. chocoensis, Sam Jos6, 

 " " " Barbacoas, 



it a It (( 



T. X. brevirostris. La Morelia, 



(( a It ct 



T. X. chocoensis, San Antonio, 

 " " " Miraflores, 



II il U U 



T. X. brevirostris J La Candela, 



u u u u 



" " " La Palma, 



(4112a) Tanagra xanthogastra brevirostris (Bonap.). 

 Euphonia brevirostris Bonap., Rev. et. Mag., 1851, p. 136 (Colombia). 



This richly colored form is found in the Subtropical Zone of the western 

 slope of the Central Range, and in both Tropical and Subtropical Zones of 

 the Eastern Andes. As with the west Colombian form, specimens from the 

 lower altitudes average smaller. Thus three males from La Morelia (alt. 

 600 ft.) average wing, 61.5 mm., while three males from La Candela (alt. 

 6500 ft.), and La Palma (alt. 5500 ft.) average wing, 66 mm. There appears 

 to be no difference in color between birds from mountains and lowlands. 

 Although specimens from the higher altitudes are as large as the largest 

 ' Quito ' birds, none shows any approach toward the purple-backed form from 

 that region {T. x. quitensis Nels.) and none have the crown as pale as Quito 

 specimens in which the back is as blue as in quitensis. 



La Palma, 2; La Candela, 4; Andalucia (5000 ft.), 1; Caqueta Trail, 

 (2500 ft.), 1; La Morelia, 4; Florencia, 2; Quetame, 1; Buena Vista, 2. 



(4116) Tanagra concinna (Scl). 

 Euphonia concinna Scl., P. Z. S., 1854, p. 98, pi. 65, fig. 2 (Bogotd). 



This species, known only from the Bogota region, we have taken only 

 in the Tropical Zone of the upper Magdalena Valley near Honda, whence 

 we have five specimens. 



Near Honda, 5. 



