30 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Tamias striatus lysteri (Rich.). 
The common eastern chipmunk is abundant at North Bay. 
Abundant at Milton and Mount Forest (Brooks). 
Very common between York and Lake Simcoe (Gapper). 
The type of this race came from Penetang on Georgian Bay. 
The North Bay specimens are typical lysteri and differ from those 
taken at Nepigon in smaller size and more yellowish color of the 
back and sides. 
Measurements of Tamias striatus lysteri from Ontario. 
Locality. 
Number. 
Sex. 
i 
Total 
length. 
Tail 
vertebrae. 
Hind foot. 
Ear from 
meatus. 
North Bay, Ontario. 
3985 
9 
246 
93 
34 
18.4 
it 
it it 
3986 
9 
254 
95 
36 
19 
tt 
a tt 
3987 
9 
255 
100 
35 
19 
it 
it a 
3988 
$ 
234 
95 
34 
18 
it 
tt tt 
3989 
$ 
256 
97 
35.6 
19.4 
Tamias striatus griseus Mearns. 
The large gray form of the eastern chipmunk is extremely 
numerous at Nepigon and at Peninsula Harbor. 
While the five specimens taken are not extreme griseus , they 
approach this form more closely than they do lysteri. The dorsal 
stripes do not extend so far back as in typical griseus , and the rump 
averages redder than in specimens from Fort Snelling, Minn. In 
general appearance they are most like a series of intermediates 
between lysteri and true striatus collected by Dr. Mearns at High¬ 
land Falls, N. Y., but in size they agree with griseus. 
Measurements of Tamias striatus griseus from Ontario. 
Locality. 
Number. 
Sex. 
Total 
length. 
Tail 
vertebrae. 
Hind foot. 
* 
Ear from 
meatus. 
Nepigon, Ontario. 
3990 
9 
230 1 
72 1 
0*7 
O i 
20 
it tt 
3991 
9 
272 
118 
36 
21 
it it 
3992 
$ 
280 
111 
37 
20 
a tt 
3993 
9 
265 
114 
37 
19 
1 Tail imperfect. 
