Red Mouse; House Mouse 
4. Beach Mouse. P. niveitventris (Chapman). Beautiful pale 
yellowish gray, rather brighter on the rump. Below snow 
white, hairs pure white to the roots. 
Range. Beaches of East Florida; Palm Beach to Mosquito 
Inlet. 
5. Island Beach Mouse. P. phasma Bangs. Paler even than 
the last, cheeks and nose white. 
Range. Anastasia Island, Fla. 
6. Prairie Mouse. P. michiganensis (Aud. and Bach).  Dark- 
fawn colour, with very dark-blackish dorsal stripe, white 
beneath. Young, uniform, plumbeous. Ears rather small. 
Range. Prairies of Illinois, southern Wisconsin, etc. 
Red Mouse 
Peromyscus nuttalli (Harlan) 
Length. 7.40 inches. 
Description. Differs from all the other long-tailed mice in its 
bright fulvous colour above and strong fulvous  suffusion 
below and the absence of a sharp line of separation between 
the colours of the upper and lower surface. No dusky 
patch at the base of the whiskers, and young fulvous, 
like the adults, not gray, as in the white-footed mice. Ears 
rather short. 
Range. Low grounds of South Atlantic States, southern Virginia 
to Enterprise, Florida. 
Although related to the white-footed mice, the red mouse is 
very distinct in many respects, especially in its shorter ears and dif- 
ferent colouration. It is not a common species. 
INTRODUCED RATS AND MICE 
(Sub-Family Murine) 
House Mouse 
Mus musculus WLinnzeus 
Lengih. 6.70 inches. 
Description. General colour gray, slightly tinted with yellowish- 
138 

