36 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
of S. personatus streatori from Yakutat, Alaska, the type locality, 
average: total length, 106.6; tail vertebrae, 45.6; hind foot, 12.7. 
Fifteen of the same subspecies from Sitka average: total length, 
108.1 ; ^tail vertebrae, 46.9; hind foot, 13.4. 1 As fourteen speci¬ 
mens of Sorex personatus collected by Mr. Outram Bangs at Lake 
Edward, Quebec, are nearly as large as those from Lake Superior, 2 
it seems probable that Sorex personatus personatus is replaced by 
a larger subspecies wherever the range of the species enters the 
Hudsonian zone. 
In a female taken at North Bay on August 27, and in another 
taken at Peninsula Harbor on October 12, the mammae are well 
developed. The uterus of the North Bay specimen contained two 
large embiyos. In each of these females there are six mammae, 
two abdominal and four inguinal. 
Measurements of Sorex personatus from Ontario. 
• 
6 
Q 
r* 
Locality. 
Numbei 
Sex. 
Total 
length 
Tail 
vertebra 
© 
r3 
r* 
s 
Ear froi 
meatus 
North Bay, Ontario. 
3920 
$ 
105 
41 
12 
7 
<< 4 4 
44 
3921 
$ 
100 
40 
12.4 
7.6 
44 44 
44 
3920 
$ 
103 
42 
12.8 
7 
44 4 4 
44 
3927 
$ 
98 
40 
11.4 
8 
44 4 4 
44 
3922 
? 
105 
42 
12.4 
7.4 
4 4 4 4 
44 
3923 
? 
103 
42 
12.4 
8 
4 4 4 4 
.4 
3924 
? 
100 
40.6 
12 
6.4 
44 4 4 
44 
3925 
? 
111 
43 
12.8 
7.4 
4 4 4 4 
44 
3928 
? 
100 
39.4 
12.4 
7.6 
44 44 
44 
3929 
? 
103 
41.6 
12 
7 
Nepigon, 
44 
3930 
? 
105 
44 
12 
7.0 
44 
44 
3931 
$ 
104 
43 
12 
7.8 
44 
44 
3932 
$ 
103 
43 
12 
7.8 
44 
44 
3933 
$ 
105 
43 
12 
8 
Peninsula Harbor, 
44 
3934 
$ 
105 
45 
12 
7 
4 4 4 4 
44 
3935 
$ 
97 
38 
12 
8 
4 4 44 
4. 
3937 
$ 
105 
46 
12.6 
7.8 
44 44 
44 
3936 
? 
113 
46 
' 12 
8 
1 The mean measurements of S. p. personatus and S. p. streatori are taken from North 
Amer. Fauna, No. 10, p. G3. 
2 The Lake Edward specimens average: total length, 104.3; tail vertebrae, 42.7; hind 
foot, 11.9. 
M 
