34 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
SCIUROPTERUS SABRINUS (Shaw). 
Flying squirrels are said to be common at North Fay, but I was 
unable to secure any. At Nepigon I took one specimen. 
Rare at Mount Forest and Milton (Brooks). 
dapper mentions ‘ Pteromys volucellci ’ among the squirrels which 
he found in the region between York and Lake Simcoe. This 
animal was probably Sciuropterus volans , a species which undoubt¬ 
edly occurs throughout the Transition zone in Ontario. 
SOREX ALBIBARBIS (Cope). 
The marsh shrew is rare at North Bay, but tolerably common at 
Peninsula Harbor. I did not find it at Nepigon. 
This shrew is always found in or near thick woods and in the 
wettest situations, generally near the bank of a stream. At Penin¬ 
sula Harbor I trapped several in vole runways at the edge of a 
wet caribou meadow. 
Measurements of Sorex albibarbis from Ontario. 
Locality. 
Number. 
Sex. 
Total 
length. 
Tail 
vertebrae. 
Hind foot. 
Ear from 
meatus. 
North Bay, Ontario. 
3902 
? 
154 
70 
20 
8.2 
44 44 
a 
3904 
? 
164 
77 
21 
9 
ii ii 
a 
3905 
? 
157 
70 
20 
9 
44 44 
ii 
3903 
$ 
155 
74 
19.4 
9 
Peninsula Harbor, 
a 
3906 
$ 
151 
65 
21 
10 
ii ii 
44 
3908 
$ 
162 
72 
19.6 
9 
44 ii 
44 
3909 
$ 
154 
69 
19 
9 
44 ii 
44 
3910 
$ 
171 
82 
20.6 
9.4 
44 ii 
44 
3912 
$ 
158 
71 
20.4 
9 
a a 
44 
3914 
$ 
160 
71 
20 
9 
a a 
44 
3915 
$ 
155 
70 
20.4 
8 
a a 
44 
3907 
? 
160 
73 
20 
9 
a a 
44 
3911 
? 
160 
74 
20 
8 
Sorex RiciiARDSONi Bachman. 
I caught two Richardson’s shrews at Peninsula Harbor, one in an 
open Sphagnum bog, the other in a dense spruce thicket. 
Both specimens are in a very dull pelage closely resembling the 
summer coat of the European Sorex araneus. 
So far as I know this species has not been taken elsewhere in 
Ontario. 
