1917.] Chapman, Distribution of Bird-life in Colombia. 535 



Valley which it ascends to its head. Westward, in Antioquia, it ranges in 

 wholly typical form, to La Frijolera on the western slope of the Central 

 Andes, thus showing that goodfellowi is almost restricted to the Cauca 

 Valley and adjoining slopes. 



La Frijolera, 3; Barro Blanco, 1; RioToch^, 1; Honda, 3; ElConsuelo, 

 2; Fusugasuga, 4; w. slope below Andalucia (alt. 3000 ft.), 2; near San 

 Agustin, 5; La Palma, 1. 



(3532) Planesticus ignobilis goodfellowi (Hart. & Hellm.). 



Turdus ignobilis goodfellowi Habt. & Hellm., Nov. Zool., VIII, 1901, p. 492 

 (Castilla, Cauca Valley). 



Common in the Cauca Valley and ascending the arid slopes of both 

 Central and Western Andes to the lower border of the Subtropical Zone. 

 It has also reached the arid upper Dagua Valley on the western slope of the 

 western range at Caldas, but does not extend to the lower Cauca region. 



Caldas, 3; San Antonio, 5; Cali, 2; Guengiie, 1; La Manuelita, 1; 

 Rio Frio, 3; Miraflores, 4. 



(3533) Planesticus ignobilis debilis (Hellm.). 

 Turdus ignobilis debilis Hellm., J. f. O., 1902, p. 56 (Rio Madeira, Brazil). 



Common in the Tropical Zone of the Eastern Andes from Quetame to 

 Villavicencio. Thirteen specimens collected in February and March are 

 grayer than four specimens collected by Miller at La Morelia in July. The 

 former, however, are in somewhat worn, the July specimens in fresh, pre- 

 sumably postnuptial plumage and the differences between the two series 

 are therefore in part, perhaps wholly, seasonal. A specimen from Yungas, 

 Bolivia, which probably typically represents debilis (type-locality "Rio 

 Madeira") is seasonally comparable with the Quetame- Villavicencio series, 

 and is materially browner than any of the more northern birds and thus 

 exhibits much the same kind of difference shown by the La Morelia series. 



Hellmayr, however (Nov. Zool., XIII, 1906, p. 5), refers 'Bogota' 

 skins to debilis, rightly assuming that they came from the region east of 

 Bogota. 



It was extremely interesting to us to observe that the song of this species 

 so closely resembled the song of the American Robin (Planesticus migra- 

 torius) that by voice alone we should have all have mistaken it for that 

 familiar species. 



Quetame, 4; Buena Vista, 3; Villavicencio, 6; La Morelia, 4. 



