24 Bulletin Wisconsin Natural History Society. [Vol. G, Nos. 1 2. 
Zapus hudsonius (Zimmermann) . 
Jumping Mouse. 
Zapus hudsonius occurs locally in many parts of the state, 
but it is nowhere common. The species appears to be most fre- 
quently found along creeks and brooks in the northern parts of the 
state ; meadows and hayfields are haunts of this species in south- 
ern Wisconsin. I have taken only one specimen in the state ; that 
one was taken August g, 1907, near Crescent Lake in Oneida 
County. 
Erethizon dorsatum (Linnaeus). 
Canadian Porcupine. 
The porcupine is another of our mammals which is unable to 
withstand the approach of civilization, and as fast as the coni- 
ferous forests are cut aw^ay and the spruce and cedar swamps 
drained and cleared, this species disappears. It was formerly com- 
mon in all the northern woods, but it is now becoming rare except 
in the wild and unsettled portions. 
Geomys bursarius (Shaw). 
Pocket Gopher. 
Pocket gophers are common in some localities in the western 
part of the state near the Mississippi River, but we have no spe- 
cimens or records from extreme southern Wisconsin. We have 
had frequent reports of pocket gophers but investigation has al- 
ways proven the animal reported to be some other species. I have 
reliable reports of the occurrence of Geomys bursarius in Pepin and 
Pierce Counties ; in the latter county it is reported quite common 
in some localities. Dr. C. liart Merriam reports the species from 
Winnebago and Fond du Lac (3), and includes southern Wiscon- 
sin within its geographical range (4). The only specimen I have 
is a young male taken by Mr. J. N. Clark, October 21, 1901 at 
Meridian, Dunn County. Mr. Clark writes that pocket gophers 
are ''common in sandy soil" in Dunn County. 
