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MUS MIC HIGANENSIS. 
Michigan Mouse. 
M. Buccis flavis, corpore supra fusco-canescente, subtus albido. 
CHARACTERS. 
Cheeks yellow, body light greyish-brown above, whitish beneath. 
SYNONYME. 
Mus Miciiiganensis. — Aud. and Bach, Jour. Acad. Nat. Sci., Phila., vol. viii. ; 
pt. ii., p. 304. 
DESCRIPTION. 
The head is of moderate size at base, gradually tapering to a sharp- 
pointed nose. The eyes, which appear to be rather smaller than those of 
the white-footed mouse, are placed farther forward. Whiskers the length 
of the head. The ears on both surfaces are so sparingly clothed with short 
hairs as, without close examination, to appear naked. Legs short and 
slender, covered with hair to the extremities of the toes. Soles naked. 
On each fore-foot there are four toes, with a rudimental thumb, protected 
by short but rather sharp nails. The hind-feet are pendactylous. The 
tail, which is round, is clothed with rather short hairs. Mammas, six pec- 
toral and four abdominal. The fur on the whole body is very short and 
smooth. 
COLOUR. 
The incisors, which are small, are yellow. The whiskers are nearly all 
white ; a few immediately below and above the eyes being black. On the 
cheeks there is a line of yellowish fawn colour running along the sides to 
the neck. The feet, nails, ears, and tail are light brown. The hairs on 
the upper surface are light plumbeous at the roots, and tipped with light 
brown and black. On the throat, inner surface of the thighs, and on the 
