610 Bulletin American Museum of Natural Hsitory. [Vol. XXXVI, 



{4297a) Ramphocelus carbo unicolor Scl. 



Ramphocelus unicolor Scl., P. Z. S., 1856, p. 128 (Bogotd). 

 Bhamphocelus jacapa Stone, Proc. Acad. N. S. Phila., 1899, p. 307 (Villavi- 

 cencio; San Martin). 



Common at Villavicencio and upward to Buena Vista and Montere- 

 dondo in the Eastern Andes. This form, recognized by von Berlepsch (Rev. 

 Tanag.) but not by Brabourne and Chubb may readily be distinguished from 

 other members of the group by its comparatively uniform coloring, the 

 abdomen and back being but slightly darker than the breast. 



Buena Vista, 7; Villavicencio, 3. 



(4303) Ramphocelus flammigerus {Jard. & Selh.). 



Ramphopis flamigerus Jard. & Selb., Ills. Orn., Ill, 1835, pi. 131 ("some part of 

 district of Columbia River"; Bebl., Rev. Tanag. substitutes Antioquia, Col.); 

 Scl. & Salv., P. Z. S., 1879, p. 501 (MedelHn). 



This species appears to be confined to the Cauca Valley and slopes of the 

 adjoining mountains up to the lower border of the Subtropical Zone, from 

 Popayan north to the vicinity of Medellin. All the specimens from the 

 Cauca Valley region proper, that is south of Rio Frio, have the rump intense 

 flame-scarlet in the male and orange-chrome in the female. The males 

 therefore resemble in color the males of R. passerini though the females of 

 these two species are quite unlike. This evidently represents the extreme 

 development of this type of color. It is not reached by any one of nine 

 males from the vicinity of Medellin though the most highly colored speci- 

 mens in this series are nearer to it than to the orange-rumped bird known as 

 R. chrysonotiis. To the westward, also, over the San Antonio Pass, fiam- 

 migerus passes into chrysonotus under conditions which, as stated below, 

 induce the belief that chrysonotus is a hybrid between flammigerus and 

 ideronotiis. 



San Antonio (e. slope?), 2 cf cf, 1 9 ; Cab, 4 d'cf , 2 9 9 ; La Manuel- 

 ita, 2 cf of; Miraflores, 2 cf cf , 1 9 ; Guengue, 1 d^, 1 9 ; Popayan, 1 

 juv.; Rio Frio, 2 cf cf , 1 9 ; Salento, 2 cf cf , 2 9 9 ; Salencio, 1 cf. 



(4304) Ramphocelus chrysonotus Lafr. 



Ramphocelus chrysonotus Lafb., Rev. Zool., 1853, p. 246 (Juntas = Los Cisneros, 

 Col., cf. Bebl., Rev. Tanag., p. 1061). 



This puzzling form appears to occupy an area connecting the ranges of 

 R. ideronbtus and R. flammigerus west and north of the Cauca Valley, and in 



