612 Bulletin American Museum of Natural History. [Vol. XXXVI, 



my opinion is a hybrid between these species. This behef is based chiefly 

 on the occurrence at the same place of specimens some of which are nearest 

 flammigerus and others nearest icteronotus, and these two sets of specimens 

 are consequently too unlike each other to be the product of the same environ- 

 ment. For example, the rimip in males from Caldas in the arid upper 

 Dagua Valley, and within a short distance of the type-locality of chrysonotus, 

 varies from cadmium-yellow to orange-chrome, while one of the two females 

 has the rump light cadmium the underparts lemon-chrome, deeper but with 

 no red on the breast or crissum, and the other has the rump orange-chrome 

 the underparts deep lemon-chrome with breast and crissum strongly washed 

 with cadmium-orange. The rump in ten males from the vicinity of Medel- 

 lin, presented to us by Francisco Escobar, varies from cadmium-yellow to the 

 flame-scarlet of flammigerus. It is true that these intergrades between 

 icteronotus a,nd flammigerus occupy ground of a different character from that 

 frequented by the former, which seems confined to the heavily forested 

 Pacific-Magdalena region, while our specimens of chrysonotus come from the 

 more open arid country lying between Cisneros and San Antonio and about 

 Medellin. This, however, is the type of country frequented hy flammigerus. 

 Caldas, 3 d^ cf, 2 9 9 ; Las Lomitas, 1 cf, 1 9 ; San Antonio (w. slope?), 

 1 cf; vicinity of Medellin, 2crcf,2 9 9; Scfcf int. toward flammigerus. 



(4305) Ramphocelus icteronotus Bonap. 



Ramphocelus icteronotus Bonap., P. Z. S., 1837, p. 121 (locality unknown; Beel., 

 Rev. Tanag., proposes w. Ecuador); Cass., Proc. Acad. N. S. Phila., 1860, p. 141 

 (Turbo; R. Atrato; R. Truando); Scl. & Salv., P. Z. S., 1879, p. 501 (Remedios; 

 Nech6); Robinson, Flying Trip, 1895, p. 161 (Puerto Berrio); Stone, Proc. Acad. 

 N. S. Phila., 1899, p. 307 (Ibagiie); Hellm., P. Z. S., 1911, p. 1112 (Guineo; N6vita; 

 Noanamd; Rio Cajon; San Joaquim). 



Common in the humid Tropical Zone of the entire Pacific coast and east- 

 ward through Antioquia to the Magdalena, occasionally reaching the Sub- 

 tropical Zone. It was not found in the Cauca Valley where it is apparently 

 replaced by R. flammigerus. 



Among the thirty-three males in the specimens below recorded, only one, 

 taken at Dabeiba with other typical males, shows an approach toward 

 R. chrysonotus. In this specimen the rump is somewhat deeper yellow than 

 usual and scattered through it are numerous orange-tipped feathers pro- 

 ducing a patchy appearance. 



Alto Bonito, 5; Dabeiba, 3; Quibdo, 1; Bagado, 6; Novita Trail 

 (1600-1800 ft.), 3; Juntas de Tamana, 5; Novita, 1; Noanamd, 1; Buena- 

 ventura, 4; San Jose, 7; Gallera, (5700 ft.), 1; Cerro Muncljique (6000 ft.). 



