No. 392-] AMERICAN ARBOREAL SQUIRRELS. 641 
Minnesota and Wisconsin, and probably Iowa, and eastward to 
northern Indiana. 
8d. Sciurus hudsonicus dakotensis Allen. Black Hills chickaree. Black 
Hills, South Dakota, and adjoining portions of Wyomin 
8e. Sciurus hudsonicus baileyi Allen. Bailey’s chickaree. Mountains of 
central Wyoming and eastern Montana, and northward into Alberta. 
8f. Sciurus hudsonicus ventorum Allen. Wind River Mountains chick- 
aree. Wind River Mountains and piaia along the eastern base 
of the Rocky Mountains in Mont 
Sciurus hudsonicus richardsonii paari Richardson’s chickaree. 
Western border of northern Montana, central and northern Idaho, 
northeastern Washington, and northward into southeastern British 
Colum 
8%. Sciurus ioia streatori Allen. Streator’s chickaree. From the 
central part of northern Washington northward over central British 
Columbia. 
82. Sciurus hudsonicus vancouverensis Allen. Vancouver chickaree. 
Vancouver Island, and northward along the coast to Sit 
Sciurus douglasii Bachman. Douglas’s chickaree. Coast region of 
Oregon and Washington. 
ga. Sciurus douglasit mollipilosus (Aud. & Bach). Redwood chickaree. 
Coast region of northern California (= Sciurus hudsonicus orarius 
Bangs, 1897). 
. Sciurus douglasii cascadensis Allen. Cascades chickaree. The Cas- 
cades region of Oregon and Washington, north into British Columbia. 
Ai 
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Mr. Bangs has given a name to the small Eastern form, and left under S. 2. loguax 
the large Minnesota one, it seems admissible, and perhaps advisable, to also 
name the large Western form. 
r. Bangs has defined his S. 2. gymmnicus as: “ Size smallest; hind foot small; 
colors all very dark,” etc. He gives the size as: “ Total length, 300; tail vertebra, 
I a hind foot, 47 mm.” 
. minnesota may ee characterized as size largest of the Eastern chickarees ; 
sas foot ge colors lighter, etc. Total length, 345; tail oe 143; hind 
foot, 50 m Type, No. 4374, Am. Mus. Nat. Hist., Q ad., Fort Snelling, Minn., 
April 4 ‘fie. Collected and presented by Dr. agar A earns. 
Mr. Bangs gives the average measurements of 6 idoi topotypes of his S. 4. 
eymnicus as: “Total length, 290.2; tail vertebre, 121.2; hind foot, 44.5 mm 
The measurements of 20 topotypes of S. 4. minnesota measure: Total ling 
334; tail vertebræ, 130.2; hind ke 49.2 mm 
Mr. Bangs also gives the average EE of 10 adults of SS. à. gymnicus 
from Digby, Nova Scotia, mts from his own collection, which by a singular 
coincidence agree to a millimeter in all the measurements with a series of the 
ame number of specimens, from the same seal given by me in my paper on the 
shied wah (oc. cit.), published nine months earlier. 
In comparison with S. 4. /oguax the Minnesota form is as much larger than SS. 4. 
loquax as S. h. gymnicus is smaller, while the color differences are quite as tangible. 
