Mar. 1899. MAMMALS OF THE OLYMPIC MOUNTAINS ELLIOT. 247 



In the preparation of the following list I desire to express my 

 thanks to Prof. J. A. Allen of the New York American Museum of 

 Natural History for unrestricted access to the fine collection under 

 his charge, and to Dr. C. H. Merriam for loan of sundry topotypes of 

 his species for comparison. 



ORDER RODENTIA. 



FAMILY SCIURID^. 



1. Sciurus douglasi. 



Sciurus douglasi. Bach, Proc. Zool. Soc. ,vol. vi, 1838, p. 99. 



This is the only squirrel of this genus found in the mountains. 

 It is in evidence wherever one goes, but is not so plentiful in the 

 higher ranges. A good deal of variation is seen in the color of 

 individuals, such as the depth of the hues on the under parts, 

 which runs from a pale yellow to a deep rich orange. This may 

 be caused to some extent by the state of moult, for apparently 

 individuals do not all change their pelage at the same time, and 

 also, age and sex have considerable influence upon the appear- 

 ance of the coat. The color of the back and upper parts varies 

 in the depth of the grizzled rufous or rusty, and the tails are so 

 differently colored at times that it is a cause of doubt whether 

 the individuals to whom they belonged are really all of the same 

 species. Only one specimen in the series shows any white in 

 the axillae. The black mark along the sides also varies both in 

 extent and intensity. 



Fifty examples: McDonald's Ranch, Elwah River, i ; John- 

 son's Ranch, Elwah River, 8 ; Boulder Creek, 33; Happy Lake, 

 6; Boulder Lake, 2. 



SUBGENUS EUTAMIAS. 



2. Tamias townsendi. 



Tamias townsendi. Bach, Jour. Phil. Acad. Nat. Scien., vol. 

 viii., pt. i, 1839, p. 68. 



This pretty chipmunk was met with generally throughout our 

 journey, and was especially plentiful among the lower ranges of the 

 mountains, but appeared in lesser numbers at timber line, and was 

 rarely found near the central snow range, being replaced by the 

 succeeding species. I noticed a decided difference in the call of 

 the individuals that dwelt at different altitudes. Those of the 

 valleys and lower hills uttered a querulous chirp, while those 

 near and at timber line called attention to themselves by a short, 

 sharp, hoarse bark. I never heard on the top of the mountains 



