1922] Swarth: Birds and Mammals of tJle Stildne Region 127 



addition to her regular yearly appropriation for the maintenance of 

 the Museum. Miss Alexander had long been especially interested in 

 the natural history of Alaska and British Columbia and had herself 

 personally participated in previous field work carried on in those re- 

 gions by this Museum. 



Our party consisted of two, the writer and Mr. Joseph Dixon, 

 Economic Mammalogist of the Museum. Mr. Dixon collected most of 

 the mammals and took entire charge of the photographic work, mak- 

 ing this an important feature of the trip. He also supplied most of 

 'the notes regarding the nesting activities of various species of birds. 

 The writer collected most of the birds, and worked with the mammals 

 enough to enable him to better understand local conditions. The 

 material collected consists of 534 mammals, 638 birds, 24 sets of birds' 

 eggs (mostly with nests), 70 amphibians, 195 photographic negatives. 

 The present report is concerned with the mammals and birds; the 

 amphibians are not included. 



In treating the birds I have followed the nomenclature of the 

 American Ornithologists' Union Check-List (1910) and its supple- 

 ments (1912, 1920), with some modifications. I have made no attempt 

 to be "up to date" in the adoption of the scores of changes proposed 

 of recent years, not yet acted upon by the Committee and regarding 

 which I have no new facts to offer or upon which I cannot form an 

 independent opinion. There are certain cases, however, dealing mostly 

 with matters of ornithology rather than nomenclature, where the pre- 

 sentation of new facts or a new point of view, or the conviction of 

 the correctness of the course of some previous writer, at variance with 

 the Check-List, impels me to the use of names not included in that 

 standard. This, it seems to me, is proper. These changes are thus 

 formally presented for consideration, but their general adoption by 

 others prior to action of the Committee is not expected, any more than 

 I, myself, expect at once to adopt other changes regarding which I 

 can have no personal knowledge. I have endeavored in every case at 

 variance with the Check-List to indicate my reason for adopting the 

 name in question. "With mammals there is no such standard, and the 

 opinion of the latest monographer of a group is usually accepted. 



My sincere acknowledgments are due to a number of institutions 

 and individuals for aid of one sort or another. For the prosecution 

 of the field work I was generously granted by the following authorities 

 permission to collect specimens of birds and mammals: the United 

 States Biological Survey and the Dominion Parks Branch, Department 



