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



Our birds agree with panamensis but in default of a topotypical series 

 oiferox I am unable to discuss their relation to that form. Ridgway (Bull. 

 50, IV, p. 612) makes panamensis a subspecies of ferox; von Berlepsch (Int. 

 ■ Orn. Con., 1907, p. 477) treats it as a species. It doubtless occurs through- 

 out the greater part of the Tropical Zone west of the Eastern Andes, 

 frequenting open or semi-arid places. Two specimens from Tumaco are 

 grayer above than average Panama specimens, but are nearly matched 

 by a specimen from La Chorrera, near the southern end of the Canal Zone. 



Tumaco, 2; Bagado, 1; Malena, 1; Puerto Berrio, 2; Chicoral, 1; 

 Turbaco, 1. 



(3088) Myiarchus cephalotes Tacz. 



Myiarchus cephalates Tacz., P. Z. S., 1879, p. 671 (Tambillo, Peru). 



Fourteen specimens, all from the Subtropical Zone of the Western and 

 Central Andes, should apparently be referred to this species, which appears 

 not to have been previously recorded from north of Ecuador. For com- 

 parison I have only a single specimen of cephalotes from the province 

 of Huanuco, Peru, with which, allowing for differences due to the worn 

 condition of the Peruvian bird, our series agrees. Seventeen specimens 

 from the Tropical Zone of western Ecuador are all referable to M. phwo- 

 cephalus, easily distinguished from cephalotes by its olive-gray back, and 

 blackish crown. It is possible that this species may be a zonal repre- 

 sentative of ferox, but all the birds in our series can readily be distinguished 

 from ferox panamensis (which occurs in the Tropical Zone of the same 

 range of the Andes whence came our specimens of cephalotes), by their 

 blacker mandibles, darker wings and tail, and, particularly, by the con- 

 spicuous, whitish margins to the outer vanes of the tertials and outer pair 

 of tail-feathers. 



Cerro Munchique, 1; Miraflores, 3; Salento, 4; Sta. Elena, 2; Rio 

 Toche, 1; El Eden, 2; La Candela, 1; La Palma, 1. 



(3092) Myiarchus apicalis 8cl. & Salv. 

 Myiarchus apicalis Sol. & Salv., Ibis, 1881, p. 269 (Bogotd). 



This is an inhabitant of the Tropical Zone from Caldas to the Magda- 

 lena Valley. Birds from the Cauca region are materially larger and have 

 larger bills than those from the Bogota region. 



Caldas,!; LasLomitas, 2; San Antonio, 3; Cali, 2; Chicoral, 1; Honda, 

 4; El Consuelo (above Honda), 1. 



