24 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Size .—Average of five adult males from Nepigon : total length, 
175; tail vertebrae, 88.2; hind foot, 19.7; ear from meatus, 17.6. 
Average of eight adult females from Nepigon : total length, 171.9; 
tail vertebrae, 84.9 ; hind foot, 19.2 ; ear from meatus, 17.6. Aver¬ 
age of eleven adult males from Peninsula Harbor: total length, 
176.4; tail vertebrae, 87.1; hind foot, 20.5; ear from meatus, 18. 
Average of eight adult females from Peninsula Harbor : total length, 
171.9; tail vertebrae, 84.9; hind foot, 19.2; ear from meatus, 17.6. 
The detailed measurements of these specimens are given in the 
following table: — 
Measurements of Peromyscus canadensis umbrinus. 
Locality. 
Number. 
Sex. 
Total 
length. 
Tail 
vertebrae. 
Hind foot. 
Ear from 
meatus. 
Nepigon, Ontario. 
4039 
$ 
182 
91 
20 
18.4 
cc cc 
4043 
$ 
178 
91 
21 
18.4 
cc cc 
4044 
$ 
172 
86 
19 
17.4 
cc Cc 
4047 
$ 
181 
91 
19 
17 
cc cc 
4048 
s 
162 
82 
19.4 
17 
Peninsula Harbor, Ont. 
4052 
$ 
171 
82 
20.4 
18.4 
cc cc cc 
4055 
$ 
180 
90 
19 
18.6 
cc cc cc 
4056 
$ 
187 
95 
21 
18 
cc cc cc 
4057 
$ 
180 
88 
20 
18 
cc cc cc 
4058 
$ 
183 
93 
21 
19 
cc cc cc 
4062 
$ 
170 
80 
20 
18 
cc cc cc 
4065 
$ 
176 
88 
21 
18 
<( (( <c 
4067 
$ 
165 
82 
20 
17.4 
cc cc cc 
4068 
$ 
180 
90 
21 
18 
cc cc cc 
4073 
$ 
166 
81 
20 
18 
cc cc cc 
4075 
$ 
183 
89 
22 
17.6 
Nepigon, Ontario. 
4037 
9 
180 
93 
19.4 
19 
C C cc 
4038 
? 
165 
81 
20 
17 
cc cc 
4040 
? 
183 
90 
20 
17.6 
cc cc 
4041 
$ 
172 
86 
20 
17.4 
cc cc 
4045 
? 
162 
79 
19.8 
18 
cc cc 
4046 
? 
175 
88 
19.6 
17 
CC Cc 
4049 
? 
170 
82 
20 
17.6 
cc cc 
4050 
9 
168 
82 
19.8 
17.4 
Peninsula Harbor, Ont. 
4054 
? 
177 
90 
20 
18 1 
CC CC bi 
4059 
? 
170 
83 
21 
18 
cc cc cc 
4061 
9 
170 
86 
21 
18 
cc cc cc 
4066 
9 
176 
87 
21 
18 
cc cc cc 
4069 
9 
173 
86 
21 
19 
cc cc cc 
4070 
9 
160 
76 
21 
19 
cc cc cc 
4076 
9 
185 
90 
20 
18 
cc cc cc 
4080 
9 
170 
83 
20 
17 
1 Type. 
