1922.] Recently published Ornithological Works. 195 



Prof, Hirain Eingliain to explore tlie Urubamba Valley 

 of Peru and to make a tliorougb siirvej^ not only of its 

 archceoloiry but also of its geology and biology. 



Tbe task of making collections in vertebrate zoology was 

 entrusted to Mr. Edmund Heller^ who is well known as 

 one of the members of the Roosevelt expedition to eastern 

 Africa. He was in the field from April to November, 

 1915, and obtained 757 bird-skins. The following year 

 Mr. Chapman himself made a hasty trip, lasting only 

 twenty-four days, to the same region, and obtained 744 

 specimens. 



The valley of the Urubamba river, which forms one of 

 the principal headwaters of the Amazon, begins at the 

 La Ray a pass, 14,150 feet, some distance north of Lake 

 Titicaca, and from thence to Santa Ana, 3480 feet, a 

 distance in a straight line of about 300 miles, it passes 

 from the Puna or Paramo zone (above the limit of arbo- 

 rescent vegetation) through the temperate, subtropical, and 

 tropical zones with arid and Iiuraid sections in each, and a 

 considerable number of pages are devoted by Dr. Chapman 

 to a discussion of these zones, their relations, and whence 

 they derived their fauna, and their comparison with similar 

 zones in Colombia. 



The second portion of the paper contains a distributional 

 list of 380 species and subspecies known from the Uru- 

 bamba, and mentions those collected many years ago by 

 H. Whitely and reviewed by Sclater and Salvin (P. Z. S. 

 1869, p. 151), and subsequently by J. Kalinowski which 

 were reported on by Berlepsch and Stolzmann (Ornis, xiii. 

 1906, pp. 63-133). 



Three new subspecies are described in the present paper, 

 and thirteen others were previously described in the Pro- 

 ceedings of the Biological Society of Washington or in the 

 Bulletin of the American Museum. We need hardly add 

 that this is a most important paper, not only for specialists 

 in neotropical birds but also for all those interested in 

 the problems of geographical distribution. 



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