68 REPORT OF NEW JERSEY STATE MUSEUM. 
which permeate the sphagnum and are the joint highways of sev- 
eral species of mice and the Long-tailed Shrew. Since that time 
Mr. S. N. Rhoads and I have procured specimens from various 
parts of the pine barrens, even as far west as the Bear Swamp just 
east of Medford. 
Everywhere it frequents the same sort of locality and is asso- 
ciated with Synaptomys cooperi, though it seems far more plen- 
tiful. : 
In the Walkill Valley, near Long Lake, Suffolk County, Mr. 
Rhoads has obtained the true Red-Backed Mouse of the north 
Evotomys gapperi (Vigors), a slightly brighter, redder animal 
than the pine barren variety and with less massive teeth (Proc. 
Acad. Nat. Sciences Phila., 1897, p. 27). It probably occurs else- 
where in the northern tier of counties and intermediate examples 
may be found in bogs of the intervening country. 
(a) Evotomys gapperi rhoadsi Stone, Amer. Nat., 1893, p. 55. 
—Rhoads, Mam. Pa. and N. J., 1903, p. 94. 
(b) Evotomys gapperi Rhoads, Proc. Acad. Nat. Sci. Phila., 
1897, p. 27.—Rhoads, Mam. Pa. and N. J., 1903, p. 92. 
Genus Microtus Schrank. 
Microtus pennsylvanicus Ord. 
Meadow Mouse. 
PLATES 22 AND 24, Fic. I. 
Length 6.50 inches. Body thick, compact ; legs short; ears very 
short. Dark brown above with a general admixture of black 
hairs, shading gradually into gray on the under surface. The 
color of the upper part varies considerably, some individuals being 
decidedly blackish, others tinged with tawny. The under surface 
varies also to dull buff. 
This mouse is very widely distributed from the bogs of the 
pine barrens to the dry sandy hillsides of the uplands and from 
the salt meadows, inland to the cornfields of the farmer. While 
