1917.] Chapman, Distribution of Bird-life in Colombia. 467 



Myiobius sulphureipygius Cass., Proc. Acad. N.' S., Phila., 1860, p. 144 (R. 

 Truando). 



Myiobius villosus ScL. & Salv., P. Z. S., 1879, p. 514 (Frontino). 



Myiobius sulphureipygius villosus Hellm., P. Z. S., 1911, p. 1135 (N6vita). 



This form appears to be restricted to the Tropical Zone of the Pacific 

 coast ranging northward to Costa Rica and southward to southwestern 

 Ecuador. After close examination of our thirty-six specimens from this 

 region, including seven from Costa Rica and six from Ecuador, I feel that 

 they should all be referred to one race. The more southern specimens 

 average somewhat more richly colored but the difference is slight and re- 

 peatedly bridged by individual variation. 



Hellmayr (1. c.) applies the name villosus to a specimen from Novita 

 (whence we also have specimens), but I have given above what I trust will 

 be accepted as conclusive reasons for believing that that name should be 

 used for a quite different bird. Our specimens from Alto Bonito lead me to 

 believe that Sclater and Salvin's record of M. villosus from Frontino should 

 be placed under this form. 



Alto Bonito, 4; Choco, 3; Baudo, 2; Novita, 2; Juntas de Tamana, 2; 

 San Jose, 1; Barbacoas, 2. 



(3022a) Myiobius cinnamomeus pyrrhopterus Hartl. 



Myiobius pyrrhopterus Haktl., Rev. Zool., 1843, p. 289 (New Grenada). 

 Myiobius cinnamomeus Scl. & Salv., P. Z. S., 1879, p. 514 (Concordia; Sta. 

 Elena). 



A common species in the Subtropical Zone of all three ranges. Com- 

 parison of our forty-eight Colombian specimens with six from Bolivia and 

 Peru shows that the former differ constantly from the latter in the smaller 

 size, paler, narrower rump-band and greener back. Thus, as Hartlaub 

 [l. c.) put it some seventy years ago, the Colombian bird is "voisine de la 

 Musoipeta oinnamomea, d'Orb. et Lafr., mais bien differente.'' Old 

 'Bogota' skins do not appear to differ from recently collected ones. 



San Antonio, 6; Cerro Munchique, 7; Crest of Andes, w. of Popayan, 1 ; 

 Cocal, 3; Almaguer, 2; Miraflores, 1; Salento, 5; Sta. Elena, 5; Laguneta, 

 1; RioToche, 1; El Eden, 1; La Palma, 8; LaCandela, 3; Andalucia, 1; 

 Aguadita, 3; El Roble, 4; Chipaque (8500 ft.), 1. 



(3033) Myiobius flavicans Scl. 



Myiobius flavicans Sol., P. Z. S., 1860, p. 464 (Pallatanga, Ecuador) ; Scl. & 

 Salv., Ibid., 1879, p. 514 (Sta. Elena). 



