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 88 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 
