THE BEAVER AS A SPECIES 217 



as the hatter was concerned. Now its furs are 

 only used for the adornment of people, as linings 

 of coats, collars, and muffs, and other similar 

 purposes. They are made up either with the 

 hair on or plucked so that the thick fur alone 

 remains. 



The Canadian beaver is divided into five more 

 or less distinct races, which are given by E. T. 

 Seton as 



Castor canadensis, Kuhl, the typical form and 

 smallest (a). 



Castor carolinensis, Rhoads, larger than the type 

 with broader tail (b). 



Castor frondator, Mearns, larger and paler than 

 the type, with scaly part of tail shorter than twice 

 the width (c). 



Castor pacificus, Rhoads, largest and darkest of 

 all, with scaly part of tail longer than twice the 

 width (d). 



Castor texensis, Bailey, very large and pale, with 

 scaly part of tail longer than twice the width. 



The distribution of the type, Castor canadensis, 

 is approximately the whole of Canada, and northern 

 United States to within three or four hundred 

 miles of the Pacific Coast, and down to about 

 latitude 38 degrees, except in the part west of 

 longitude 103 degrees, where frondator is found. 

 In the central southern portion of the United 

 States they are classed as texensis, while those in 

 the south-eastern states are carolinensis and all 



