BIRD LIFE IN THE UEUBAMBA VALLEY OF PERU. 41 



Phacellodomus striaticeps griseipectus, Proc. Biol. Soc. Wasli., vol. 32, 1919, p. 258 



(Ttica-Ttica). 

 Mecocerculus subtropicalis, Proc. Biol. Soc. Wash., vol. 32, 1919, p. 263 (San Miguel 



Bridge). 

 Anaeretes agraphia, Proc. Biol. Soc. Wash., vol. 32, 1919, p. 263 (Idma). 

 Basileuterus luteoviridis superciliaris, Proc. Biol. Soc. Wash., vol. 32, 1919, p. 265 



(above Torontoy). 

 Pheucticus uropygialis terminalis, Proc. Biol. Soc. Wash., vol. 32, 1919, p. 266 (San 



Miguel Bridge). 

 Pseudochloris uropygialis connectens, Bull. Amer. Mus. Nat. Hist., a^oI. 41, 1919, 



p. 329 (La Raya). 

 Catamenia analoides griseiventris, Proc. Biol. Soc. Wash., 1919, p. 267 (Cuzco). 

 Atlapetes canigenis, Bull. Amer. Mus. Nat. Hist., vol. 41, 1919, p. 330 (Torontoy). 

 Diglossa mystacalis albilinea, Bull. Amer. Mus. Nat. Hist., vol. 41, 1919, p. 331 



(Cedrobamba) . 

 Oreomanes binghami, Bull. Amer. Mus. Nat. Hist., vol. 41, 1919, p. 331 (Cedrobamba) 



=Oreomanes frascri Sclater. 



LIST OF SUBSPECIES DESCRIBED IN THIS PAPER. 



Aratinga mitrata alticola, p. 62. 

 Siptornis modesta proxima, p. 83. 

 Ochthoeca lessoni tectricialis, p. 88. 



DISTRIBUTIONAL LIST OF 380 SPECIES AND SUBSPECIES OF BIRDS 

 KNOWN FROM THE URUBAMBA VALLEY. 



This paper is offered primarily as a contribution to a biological 

 survey of the Andean system. Such value as it may possess is to be 

 found chiefly in the results of a comparative study of the origin of 

 the bird life of the Temperate and Puna Zones from which our col- 

 lections, if not complete, are at least fairly representative. 



As a preliminary to the end in view it was necessary only that the 

 identity of our specimens — constituting, as it were, the factors in the 

 local problem under consideration — be determined and expressed in 

 terms of current nomenclature. So far as possible 1 have, therefore, 

 restricted my systematic work to the specimens contained in the 

 collection. The fact, furthermore, that the American Museum, in 

 the prosecution of its biological survey of South America, is now 

 engaged in work in Peru makes it desirable to await the receipt of 

 much additional material before attempting anything like revisions 

 of the groups to which the species herein listed belong. 



Failure to recognize genera recently described or recorded by 

 various authors does not necessarily mean disapproval of their 

 views. Generic subdivision in ornithology nowadays is so un- 

 standardized and, in many cases, is so largely a matter of opinion, 

 that it seems unwise to change long-established terms until oppor- 

 tunity has been afforded to weigh the evidence on wliich the new or 

 revived genera in question are recognized. 



