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JOURNAL OP MAMMALOGY 
THE MAMMALS OF SOUTHEASTERN WASHINGTON 
By Lee Raymond Dice 
[Plates 1-2] 
The distribution and habits of the mammals of southeastern Wash- 
ington are known only from scattered references in papers dealing with 
other subjects. As a beginning in the organization of the knowledge 
on the mammals of the region, the following paper attempts to state, 
as completely as available data permit, the distribution of the various 
species of mammals occurring in Walla Walla and Columbia Counties. 
Original notes on the habits and abundance of the various species in 
this area are given. In addition any original notes at hand on the 
distribution or habits of the mammals of other parts of southeastern 
Washington are included. However, no attempt is made to give a 
complete statement of mammal distribution in other than the two coun- 
ties named. 
Descriptions of the climatic and topographic conditions in south- 
eastern Washington have been given by Russell (1897) and Calkins 
(1905). Weaver (1917) has described the plant habitats of Whitman 
County, and the author (1915) has given descriptions of the vertebrate 
habitats in Walla Walla and Columbia Counties. 
The mammals in the vicinity of Prescott, Walla Walla County, 
have been studied by the author at intervals between 1905 and 1917. 
In that time several successive years were spent in the region and 
frequent visits, often of several months’ duration, were made, during 
which observations on mammals were taken whenever possible. Most 
of two years were spent at Pullman, Whitman County, and a number 
of observations were made in that region. Camping trips have been 
made at various times to Wallula, Lyon’s Ferry, Wawawai, and the 
Blue Mountains. A considerable number of specimens have been 
secured, so that for the smaller species the identifications are well 
established. The specific identifications of the larger forms are based 
largely on their geographic distribution. 
The taxonomic determinations of a number of specimens were 
kindly made by Dr. J. Grinnell, of the California Museum of Verte- 
brate Zoology, and others by Mr. Wilfred H. Osgood, of the Field 
Museum of Natural History, and by Mr. Vernon Bailey, of the United 
States Bureau of Biological Survey. A few notes by Mr. Floyd Ken- 
