MILLER: MAMMALS OF ONTARIO. 
15 
Measurements of Microtus pennsylvanicus fontigenus from Ontario. 
Locality. 
Number. 
Sex. 
Total 
length. 
qS 
ai 
Hind foot. 
Ear from 
meatus. 
Nepigon, 
Ontario. 
4098 
$ 
163 
49 
20 
14 
66 
66 
4107 
$ 
156 
43 
20 
13 
a 
66 
4105 
$ 
136 
36 
20 
12 
11 
66 
4106 
$ 
138 
35 
19 
12 
u 
“ 
4113 
$ 
135 
35 
20 
12 
u 
66 
4114 
$ 
136 
34 
20 
12 
u 
“ 
4100 
9 
133 
30 
19 
12.4 
u 
66 
4102 
9 
144 
35 
20 
12 
66 
66 
4103 
9 
137 
36 
18 
12 
66 
66 
4104 
9 
136 
37 
18.8 
13 
66 
6 6 
4108 
9 
147 
39 
20 
12 
66 
66 
4109 
9 
144 
39 
19.6 
12 
Peninsula Harbor, “ 
4121 
$ 
162 
35 
19.8 
12 
66 
66 66 
4127 
$ 
161 
45 
21 
13 
66 
66 66 
4122 
$ 
144 
39 
19 
12 
66 
66 66 
4123 
$ 
158 
43 
21 
12.8 
66 
66 66 
4128 
d 
137 
38 
19.8 
11.4 
66 
66 66 
4130 
$ 
135 
34 
20 
12 
66 
6 6 66 
4132 
d 
130 
32 
19.6 
11.4 
66 
66 66 
4134 
d 
140 
38 
20 
13 
66 
66 66 
4135 
d 
146 
37 
20.6 
11 
66 
66 
4115 
9 
138 
34 
20 
12 
66 
66 66 
4116 
9 
138 
35 
19 
12 
66 
66 66 
4118 
? 
152 
39 
20 
13 
66 
66 66 
4119 
$ 
160 
40 
20 
13 
66 
66 66 
4120 
9 
132 
35 
19.4 
11 
66 
66 6 6 
4124 
9 
140 
37 
20 
13 
66 
6 . 66 
4125 
9 
136 
37 
19 
12 
66 
6 k 66 
4126 
9 
152 
40 
19 
12 
66 
6 6 66 
4129 
9 
133 
32 
19 
11 
66 
66 6 6 
4131 
9 
162 
43 
20 
13 
Evotomys gapperi (Vigors). 
Arvicola gapperi Vigors, Zool. Journ., 1830, vol. 5, p. *204 (red 
phase). 
Evotomys fuscodorsalts Allen, Bull. Amer. Mus. Nat. Hist., 1894, 
vol. 6, p. 103 (brown phase) . 
The red-backed mouse is excessively abundant and universally 
distributed at North Bay, Peninsula Harbor, and Nepigon. 
Common under mossy logs in thick evergreen woods and along 
creek bottoms at Mount Forest (Brooks). 
Common on the steep banks of streams in woods between York 
and Lake Simcoe (Capper). 
