1917.] Chapman, Distribution of Bird-life in Colombia. 595 



Tangara sclateri may possibly inhabit the forests of this zone on the 

 eastern slope of the Eastern Andes, but unfortunately the portion of this 

 zone through which we passed was arid and hence without forest. 



La Candela, 4; Fusugasuga, 2; Aguadita, 3; El Roble, 1; Subia, 6. 



(4172a) Tangara aurulenta occidentalis Chapm. 



Tangara aurulenta occidentalis Chapm., Bull. A. M. N. H., XXXIII, 1914, p. 188 

 (San Antonio, Col.). 



Calliste aurulenta Scl. & Salv., P. Z. S., 1879, p. 498 (Concordia; Frontino). 



Calospiza aurulenta aurulenta Hbllm., P. Z. S., 1911, p. 1102 (Pueblo Rico). 



Char, subsp. — Similar to T. a. aurulenta but underparts more richly colored, 

 approaching raw-sienna rather than analine-yeUow, under tail-oo verts, particularly, 

 deeper; the crown and rump slightly more intense, the margins to the feathers of 

 the back and, especially secondaries and wing-coverts, similar to color of head, and, 

 in adult specimens, without the tinge of green present in aurulenta; the bill averaging 

 longer. 



Common in the Subtropical Zone of the Western Andes, but apparently 

 less numerous in the Central Andes. Specimens from Ricaurte in extreme 

 southern Colombia closely approach the Ecuadorian form, T. a. goodsoni, 

 which is an intermediate between occidentalis and true aurulenta of the 

 Eastern Andes. 



Las Lomitas, 4; San Antonio, 9; Gallera, 6; Cocal, 2; Ricuarte, 7; 

 Miraflores, 1; La Frijolera, 5. 



(4178) Tangara icterocephala (Bonap.). 



Calliste icterocephala Bonap., Comp. Rend., XXXII, 1851, p. 76 (Ecuador); 

 Scl. & Salv., P. Z. S., 1879, p. 498 (Frontino). 



Calospiza icterocephala Hellm., P. Z. S., 1911, p. 1103 (Pueblo Rico). 



Gallera, 1 cf . 



(4179) Tangara vitriolina (Cab.). 



Callispiza vitriolina Cab., Mus. Hein., I, 1850, p. 28 (Colombia = Bogotd). 

 Calliste vitriolina Wyatt, Ibis, 1871, p. 325 (Ooana; Bucaramanga) ; Scl. & 

 Salv., P. Z. S., 1879, p. 498 (Medellin; Concordia). 



Calospiza vitriolina Stone, Proc. Acad. N. S. Phila., 1899, p. 307 (Ibagiie). 



This comparatively dull-colored member of its genus inhabits rather open 

 country with scrubby or brushy growth. It is therefore chiefly an inhabi- 

 tant of the semi-arid portions of the Tropical Zone (except on the Caribbean 

 coast) ranging upward through clearings to the Subtropical Zone. Two 

 specimens from east of the Andes (Villa vicencio ; Barrigon) have the crown 



