12 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Mr. Brooks observed no lemmings of any kind, and Gapper does 
not mention their occurrence. 
By the capture of this species at Peninsula Harbor its known 
range is extended 700 miles or more west of any of the localities 
from ydiich it has hitherto been recorded. 1 
This lemming occurs in a great variety of damp, cool places 
though it is most numerous in bogs, either open or wooded. I 
could not find it in dry woods or on the banks of running brooks. 
It frequently occurs at the borders of clearings, especially near 
boggy places grown up to bushes. I caught one under the founda¬ 
tion of a disused log cabin in low ground near the woods, and 
secured others in pitfalls dug at the edge of a garden. Wherever 
the animal occurred it lived in cavities among roots covered with 
moss and Sphagnum. Even in the places where it was most abun¬ 
dant I could find no beaten runways. One was, however, caught 
in a vole trail in a grassy marsh at Peninsula Harbor. The 
associates of this animal are chiefly Eootomgs gapperi , Sorex 
personatus , jS. cdbibarbis , and Microtus, though occasionally other 
Measurements of Synaptomys fatuus from Ontario. 
Locality. 
Number. 
Sex. 
; 
Total 
length. 
Tail 
vertebrae. 
Hind foot. 
Ear from 
meatus. 
North Bay, Ontario. 
4226 
$ 
124 
22 
18 
12 
a u u 
4227 
$ 
134 
22 
19 
13 
u u u 
4346 
$ 
121 
19 
18 
10 
U 6i U 
4231 
9 
120 
19 
18 
11.4 
tc u u 
4235 
9 
119 
19 
19 
12 
a u u 
4238 
9 
132 
20 
19 
12 
u u u 
4345 
$ 
129 
19 
19.4 
11 
u u u 
4347 
? 
118 
20 
18 
11 
<c u 44 
4230 
6 juv. 
108 
16 
17.4 
10.8 
u u u 
4232 
$ juv. 
115 
16.8 
17 
12 
a 4 4 4 4 
4233 
<? juv. 
116 
18 
19 
12 
(4 44 44 
4234 
$ juv. 
99 
17 
17 
10 
44 44 44 
4236 
$ juv. 
100 
17 
18.8 
10.6 
44 44 44 
4229 
9 juv. 
112 
19 
17 
10.6 
44 44 44 
4237 
? juv. 
100 
15.4 
18 
11 
44 .4 44 
4239 
9 juv. 
90 
19 
17 
9 
44 44 44 
4240 
9 juv. 
97 
18 
17 
10 
Peninsula Harbor, Ont. 
4242 
9 
125 
18 
18 
11 
44 44 44 
4243 
9 
132 
19 
18 
10 
44 4 4 4 4 
4241 
9 juv. 
108 
16 
| 18 
9.4 
1 For previous records see Merriam, Proc. Biolog. Soc. Washington, vol. 10, p. 58-59, and 
Batclielder, Proc. Bost. Soc. Nat. Hist., vol. ‘27, p. 186. 
