Dr. Gapper on the Mummalia of Upper Canada. 205 
is sharp, and projects more than two lines beyond the incisors ; the eyes 
are large and prominent ; the ears large and ovate ; the cheek-pouches, 
when distended, reach to the ear ; the tail is scaly and hairy; the legs 
and feet are stout. 
The fur consists of hairs either entirely black, or trpped with yellow- 
ish or reddish brown ; the black hairs are the longest, and predominate 
on the back and top of the head ; there is generally a blackish spot at the 
roots of the whiskers, and a whitish one before the ear. The whiskers 
are very long, some black, others white. The under parts, including the 
legs, are pure white. 
This animal bears a considerable resemblance in form and colour to 
Dr. Richardson’s Mus. leucopus, which it rather exceeds in size; but the 
very evident cheek pouches distinguish it generically from Dr. Richard- 
son’s new species. 
This pretty little Hamster is very common in all the district, climbing 
trees with facility, and making a nest of thistle-down in their hollows, 
either towards the top or at the root ; it is quite a pattern of industry and 
fore-thought, for, although it lays up a winter store of full half a peck 
of corn or other seeds, it nevertheless runs about in search'of food all 
the winter, following the cattle track, and picking the undigested corn 
out of their dung, regardless of deep snow or severe frost. It frequently 
makes its nest in barns amongst the hay, where it also lays up its store. 
(46.) Meriones Labradorius (Richardson.) Jumping Mouse. 
' The female makes a nest of grass ; my specimen had made her’s under 
the sod in a furrow, and had five young ones; she measured 32 inches 
from the nose to the insertion of the tail; the tail itself 5 inches. 
(47.) Arctomys Empetra (Schreb.) Quebec Marmot. Ground 
Hog of the settlers. 
This animal is solitary in its habits, and makes its burrow in dry sand- 
barks. It is not uncommon. 
(57.) Sciurus Lysteri (Ray.) Chipmunk of the settlers. 
Very common. It is constantly seen running on the rail-fences, and 
hiding among brush-wood, uttering a peculiar squeak when started ; 
if hunted it runs up trees, but soon endeavours to descend, and by mak- 
ing a great spring, tries to reach the ground and escape to its burrow. 
(59.) Sciurus Hudsonius (Pennant.) The Chickaree Red Squirrel. 
It has no cheek-pouches, though placed by M, Cuvier in the division 
~t 
