MICHIGAN MOUSE. 
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abdomen, they are yellowish white. There is no distinct line of demarca- 
tion between the colours of the back and under surface, nor does the 
white extend along the sides, as in the white-footed mouse. 
DIMENSIONS. 
Inches. Lines. 
Length of head and body, 4 
“ of tail, 2 6 
“ of tarsus, 5 
Height of ear, 4 
GENERAL REMARKS. 
This species bears some resemblance in size and colour, both to the com- 
mon house mouse (M. musculus) and the white-footed mouse (M. leucopus). 
The colour on the back resembles the former, and on the under surface the 
latter. Its tail is considerably shorter than either, and its ears less naked 
and much smaller than those of M. leucopus. Neither has it the white 
feet so characteristic of that species. 
