38 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
bat-like squeaking. At times, when especially enraged, lie stood on 
his hind legs, resting his front feet as high as possible on the side of 
the pitfall, and vented his anger in a sound much resembling a red 
squirrel’s chatter greatly reduced in volume and proportionally 
increased in intensity. While doing this he invariably threw back 
his muzzle so as to expose to the fullest extent his formidable 
incisors. 
Although the northern range of Blarina brevicauda has been 
supposed to be limited by the southern edge of the Canadian zone, 1 
the abundance of the species on the north shore of Lake Superior 
shows that it must be considerably extended. I have nowhere seen 
Blarina brevicauda more abundant and destructive than at Penin¬ 
sula Harbor, and the fact that it occurs there in equal abundance in 
all situations from the deepest spruce woods to the most barren 
‘prairies’ is sufficient indication that its presence is not dependent 
on some specially favorable local condition. 
A female taken at North Bay on August 25 has four mammae, 
all inguinal. 
Measurements of Blarina brevicauda from Ontario. 
Locality. 
Number. 
Sex. 
Total 
length. 
Tail 
vertebrae. 
Hind foot. 
North Bay, Ontario 
3882 
? 
123 
26 
15 
a tt tt 
3883 
? 
122 
24 
15.4 
a a tt 
3887 
? 
125 
27 
15.4 
tt tt u 
3888 
? 
127 
27.6 
15 
tt tt tt 
3889 
? 
118 
24 
15 
a tt tt 
3891 
? 
110 
25 
15 
tt tt a 
3884 
$ 
123 
24.6 
15 
a tt tt 
3885 
$ 
120 
26 
14 
tt tt a 
3886 
$ 
121 
26 
15 
a tt u 
3890 
$ 
130 
26 
15.6 
a a u 
3892 
$ 
125 
26 
15 
Nepigon, “ 
3893 
? 
120 
24 
15.4 
it a 
3897 
$ 
124 
25 
15 
a tt 
3894 
$ 
130 
27 
16 
tt n 
3895 
$ 
130 
27.6 
15 
Peninsula Harbor, “ 
3898 
? 
130 
30 
16 
it H tt 
3899 
? 
125 
26 
16 
it it tt 
3900 
? 
125 
30 
16.6 
n tt tt 
3901 
$ 
130 
29 
17 
1 Dr. C. Hart Merriam in his revision of the genus (North Amer. Fauna, No. 10, p. 11 ) 
defines the range of Marina brevicauda brevicauda as follows: “ Upper Austral and 
Transition zones, * * * * penetrating a short distance into lower edge of boreal.” 
