1917.] Chapman, Distribution of Bird-life in Colombia. 465 



Andes, at an altitude of about 4600 feet. No others were observed. I 

 have no Peruvian specimens for comparison. 



(3016) Cnipodectes minor Scl. 



Cnipodectes minor Sol., P. Z. S., 1883, p. 654 (Chamicuros, Peru). 



Two specimens from La Morelia represent this species of which I have 

 seen no Peruvian specimens. They measure as follows. 



(3017) Myiobius barbatus barbatus [Gmel.). 



Muscicapa barbata Gmel., Syst. Nat., I, 1789, p. 933 (Cayenne). 



Inhabits the humid Tropical Zone at the eastern base of the Eastern 

 Andes. Four specimens agree with a series from British Guiana. 

 Florencia, 3; La Morelia, 1. 



(3018) Myiobius barbatus atricaudus Lawr. 



Myiobius atricaudus Lawr.', Ibis, 1863, p. 183 (Panama R. R. Line; type ex- 

 amined). 



Myiobius barbatus Scl. & Salv., P. Z. S., 1879, p. 514 (Sta. Elena!). 



This well-named race evidently occupies all of the humid Tropical 

 Zone west of the Eastern Andes and penetrates the Cauca Valley at least 

 as far as Rio Frio. I detect no racial differences in a series of twenty-nine 

 specimens (including the type) from Costa Rica south to near Guayaquil. 



Dabeiba, 1; Caldas, 2; Barbacoas, 3; Rio Frio, 1; Malena, 1. 



(3020) Myiobius villosus Scl. 



Myiobius villosus Scl., P. Z. S., 1860, p. 93 (Nanegal, w. Ecuador). 



I refer to this species three specimen's from the lower part of the Sub- 

 tropical Zone in the Western Andes of southwest Colombia. They agree 

 with Sclater's original description and differ from the form of the Tropical 

 Zone, which I call Myiobius sulphureipygim aureatus Bangs, in its larger 

 size, darker back, browner head (particularly in the female, which has the 

 crown largely buckthorn-brown) brownish instead of yellow under wing- 

 coverts, and especially, in the color of the underparts, which are olive old- 



