1903.] Allen, Mammals from Northern British Columbia. 543 



EXTERNAL MEASUREMENTS Continued. 



7 specimens have a total length of 184 or more. 



1 6 " 174 or less. 



17 between 174 and 184. 



8 "a tail length of 84 or more. 



9 ' 74 " less. 



23 ' between 74 and 84. 



Ratio of tail vertebras to total length, 42 to 48. 

 22 specimens have a tail ratio of 45 or above. 



18 " " " less than 45. 



