98 BULLETIN 117, UNITED STATES NATIONAL MUSEUM. 



Measurements of males. 



Locality. 



Bill from 

 nostril. 



Yungas, Province of Cochabamba, Bolivia 



Rio Inambari, Peru 



San Miguel Bridge, Peru 



Andalucia, Colombia 



Rio Toche, Colombia 



Near M^rida, Venezuela 



Bermudez, Venezuela 



11 

 11 

 11 

 12 

 11. 

 11 

 II 



(3064a) EMPIDONAX TKAILLI ALNORUM Brewster. 



Empidonax traillialnorum Brewster, Auk, 1895, p. 161 (Upton, Maine). 

 ? Empidonax pusillus trailli Berlepsch and Stolzmann, Ornis, 1906, p. 90 (Santa 

 Ana, male Dec). 



Berlepsch and Stolzmann were uncertain whether to refer a single 

 specimen in worn plumage to the eastern or western form of this 

 species, and I am in the same position regarding a specimen from 

 Cuzco. Ridgway records alnorum from Ecuador. 



Cuzco, 1 (Nov. 30). 



(3069) MYIOCHANES ARDOSIACUS ARDOSIACUS (Lafresnaye). 



Tyrannula ardosiaca Lafresnaye, Rev. Zool., 1844, p. 80 (Colombia). 



Inhabits the Subtropical Zone. There is a slight lightening on 

 the abdommal region which apparently indicates an approach to 

 M. a. plehius. 



San Miguel Bridge, 4; Torontoy, 1. 



(3084) MYIARCHUS TYRANNULUS CHLOREPISCIUS Berlepsch and LeverkUhn, 



Myiarchits tyrannulus cJilorepisdus Berlepsch and Leverkuhn, Ornis, vol. 6, 



1890, p. 16 (Cuyaba, Brazil). 

 Myiarchus erythrocercus Sclater and Salvin, Proc. Zool. Soc, 1876, p. 16 



(Maraniua). 

 Myiarchus mexicanv^ chlorepiscius Berlepsch and Stolzmann, Ornis, 1906, 



p. 89 (Santa Ana). 



Berlepsch refers a specimen from Santa Ana to this race, but a 

 single bird in our collection from the same locality is much grayer 

 than any one of a large series from Chapada, Matto Grosso. 



Santa Ana, 1. 



(3088) MIIARCHLS CEPHALOTES Taczanowekl. 



Myiarchus cephalotes Taczanowski, Proc. Zool. Soc, 1879, p. 671 (Tambillo 

 Peru). 



Two specimens apparently represent this species of which my only 

 other Peruvian specimen (from Province of Huanaco) is in much 



