BIRD LIFE IN THE URUBAMBA VALLEY OF PERU. 103 



toy are near the Santa Ana form in color, but are intermediate in 

 size; the series, as a whole, showing complete intergradation between 

 the Puna and Tropical Zone races. 



Ollantaytambo, 4; Chospiyoc, 2; Huaracondo Canyon, 2; Pisac, 2; 

 Galea, 2; Ttica-Ttica, 4; Cuzco, 4; La Raya, 3. 



(3442) TROGLODYTES MUSCULUS AUDAX Tschudl. 



Troglodytes audax Tschudi, Faun. Peruana, 1845-46, p. 185 (Coast of Peru; see 

 Berlepsch and Hellmayr, Journ. fur Ornith., 1905, p. 6). 



Twelve specimens from Santa Ana and La Merced agree in size 

 and in color. In the first-named character they are like a large 

 series from the vicinity of Lima, but as might be expected, they 

 average darker in color than Pacific coast specimens. The difference, 

 however, is slight and is doubly bridged by individual variation. 

 That is, specimens in the Santa Ana series are as light as the average 

 Pacific coast bird, while others from near Lima are as dark as any 

 of our Santa Ana or La Merced birds. In spite, therefore, of the 

 striking differences which exist between the climate of the eastern 

 and v/estern bases of the Andes, and notwithstanding the fact that 

 these regions are separated by a mountain range reaching to the 

 Puna Zone, essentially the same form of House Wren occurs in both. 



As remarked under the preceding race, specimens from San Miguel 

 Bridge and Torontoy approach the Puna Zone race. 



Santa Ana, 5; San Miguel Bridge, 1; Torontoy, 2. 



(3451) TROGLODYTES SOLSTITIALIS MACROURUS Berlepsch and Stolzmann. 



Troglodytes solstitialis macrourus Berlepsch and Stolzmann, Proc. Zool. Soc, 

 1902, vol. 2, p. 55 (Central Peru). 



These specimens do not conform exactly to the description of this 

 form, and comparison with topotypes will be required to determine 

 whether they are typical. 



Torontoy (9,500-10,700 feet). 2. 



(3458) HENICORHINA LEUCOPHRYS LEXJCOPHRYS (Tschudi). 



Troglodytes leucophrys Tschudi, Arch, fur Naturg., 1844, p. 282 (Peru). 

 Henicorhina leucophrys Berlepsch and Stolzmann, Ornis, 1906, p. 74 (Idma), 



Common in the Subtropical Zone. 



Idma, 7; San Miguel Bridge, 8; Torontoy, L 



Family CINCLIDAE. 



DIPPERS. 



(3480) CINCLUS LEUCOCEPHALUS Tschudi. 



Cindus leucocephalm Tschudi, Arch, fur Naturg., 1844, p. 279 (Peru). 



Common in the Subtropical Zone. 

 San Miguel Bridge, 2. 



