18 Bulletin Wisconsin Natural History Society. [Vol. 6, Nos. 1 — 2. 
their appearance. At our camp on North Pelican Lake in the 
summer of 1906 no chipmunks were visible when we landed our 
boat-load of supplies, but within a few clays they were present in 
dozens. They must investigate everything and one even entered 
my suitcase, left partly open, and remained there for several min- 
utes. When we broke camp two of them entered the loaded boat. 
After the boat was launched they jumped into the water, though 
with considerable hesitation, and swam ashore. 
Citellus franklini (Sabine). 
Franklin's Spermophile ; Gray Gopher. 
Gray gophers are generally considered rare in all sections of 
the state but careful observation will prove them quite common 
west from Rock County to the Mississippi River and north to 
Pepin County. I have taken specimens in Rock County, and have 
observed the species in Green, Sauk and Jefferson Counties. 
The habit Franklin's gopher has of dwelling in fields of grow- 
ing grain and along old fence lines keeps the species in obscurity. 
As soon as the grain is cut in the fields this species takes up its 
abode in the taller grass along fences and in old pastures. It is 
a very shy mammal, and unless great caution is used it cannot be 
approached closely. These characteristics, together with its pro- 
tective coloration, make it one of our most difficult rodents to 
study. 
Citellus tridecemlineatus (Mitchell). 
Striped Spermophile ; Gopher. 
This is one of our few Wisconsin mammals which has in- 
creased in numbers. There is scarcely a meadow, pasture, or road- 
side in the southern half of the state but what has its colony of 
gophers. Early in April or late in March they begin to awaken 
from their hibernation, and with the warm weather of May they 
commence their whistling which continues until the frosts of Oc- 
tober drive them to their burrows for another winter. The latest 
