BIRD LIFE IN THE URUBAMBA VALLEY OF PERU. H 



following: Nothura maculosa peruviana, Myiozetdes similis con- 

 nivens, and Syoro'phila gutturalis inconspicua. 



The follo's\dng were described from Idma: Lophotriccus squam- 

 aecristatus tiypocJilorus, Buthraupis cucullata saturata, and Basileuterus 

 signaius. Of the remaining three birds in this list of nine said to 

 have been described from Santa Ana, two are from Chirimoto in 

 the Chachapoyas district of northern Peru, and one from La Merced 

 in the Chanchamayo district east of Lima, 



COLLECTIONS OF YALE UNIVERSITY-NATIONAL GEOGRAPHIC 

 SOCIETY'S EXPEDITIONS. 



As mentioned above, the Heller Expedition was in the field from 

 April to November, 1915; the Chapman Expedition from July 1 to 

 July 24, 1916; Watkins collected alone from April 3 to 25, 1917, 

 and in 1914 made a small collection for the American Museum near 

 Cuzco. The results of this collecting form the material basis of the 

 present paper and may be summarized as follows: 



Number of specimens. 



Heller Expedition 757 



Chapman Expedition 744 



Watkins Expedition 237 



Watkius's Cuzco collection 95 



Total number of specimens 1, 833 



The total number of species recorded by Whitely and Kalinowski 

 is 202, From essentially the same region in which these collectors 

 worked we secured 291 species. Adding to this number the species 

 taken by Heller in the humid Tropical Zone on the Rio Cosireni and 

 Rio Comberciato, a zone the collectors above mentioned did not 

 enter, and 43 species which the}^ secured and we did not, and we 

 have a total of 380 species known from the Urubamba Valley. Fur- 

 ther exploration, particularly in the humid Tropical Zone, would 

 greatly increase this number. As a result of three and half years' 

 collecting in a section from the Puna Zone at Lake Junin to the 

 humid Tropical Zone at the eastern base of the Andes, Kalinowski 

 secured 483 species. Adding to these, 66 species taken in the same 

 region by Jelski, but not by Kalinowski, v.^e have a total of 549. 

 This number doubtless fairly represents the avifauna of the region 

 explored, but further work in the humid Tropical Zone vrould un- 

 questionably increase it. Our v/ork in this zone was onl}^ sufficient 

 to show the faunal affinities of our two stations in it. I believe also 

 that the forests of the humid Temperate Zone contain a considerable 

 number of species not represented in our collections, and it is certain 

 that additional species could be secured in the forests of the Sub- 

 tropical Zone, their density and the physical difficulties of mountain 

 collecting making it far from easy to take a census of their inhabitants. 



