MAMMALS OF PENNSYLVANIA AND NEW JERSEY. lOI 



uted by Ord. So far as is known, this copy of Guthrie's work is the only one 

 extant. An author's separate is in the Acad. Nat. Sci., Phila. 



Description of species. — Wilson's meadow mouse varies slightly in size and 

 coloration within our limits, specimens from the salt marshes of southern 

 N. J. being larger and grayer than those from the mountain tops of northern 

 Pa. Those in the latter region approach somewhat the characters of the 

 northern vRt2ido\v woXe, M. p. fon/igenus (Bangs), which is restricted to the 

 Hudsonian zone. There seems to be no approach in our Pa. & N. J. speci- 

 mens to the southeastern race, M. p. nigrans Rhoads, found in the region of 

 Dismal Swamp, Virginia. In the mountains of central Pa., Mr. IngersoU 

 found a pecuHar phase of coloration in this species, many specimens being 

 "of two shades of umber-brown over the whole of upper parts, two from Tus- 

 carora being almost a deep blackish-chestnut." 



The general color of this species, above, is a tawny gray-brown ; beneath, 

 light gray washed with buff; tail colors corresponding with those of body, 

 feet dark gray. The young are much darker, plumbeous-gray. The upper 

 incisors or cutting teeth are smooth-faced, not grooved. The tail is over y^ 

 the length of head and body. Ears not showing above body fur. 



Measurements. — Total length, 138 mm. (5^ in.); tail vertebrae, 38 (i}^); 

 hind foot, 19 (^). 



Specimens examined. — Pa., 16 counties, 255 ; N. J., 13 counties, about 300. 



Northern Pine-woods Vole, or Mole Mouse. Microtus pinetorum 

 scalopsoides (Audubon and Bachman.) 



1 84 1. Arvicola scalopsoides Audubon and Bachman, Proc. Acad. Nat. 

 Sciences, Phila., vol. i, p. 97. 



1896. Microtus pinetorum scalopsoides Batchelder, Proceedings Boston 

 Society Nat. History, vol. 27, p. 187. 



Type locality. — Long Island, New York. 



Faunal distribution. — Abounding in sandy, loamy soils, both forested and 

 deforested, in the upper austral zone ; more sparingly found in the transition 

 zone, up to the summits of the higher Pa. Alleghanies near the lower border 

 of the Canadian zone. Connecticut to Illinois ; intergrading southeastwardly 

 into the type form pinetorum of Leconte, and southwestwardly into M. p. 

 auricularis Bailey. 



Distribution in Pa. and N. J. — Excessively abundant in light, dry soils of 

 the southern lowlands of both States, nearly every square yard of the arable 

 uplands being pierced by one or more of their tunnels. In waste lands and 

 forests they are also frequent, especially in the sandy pine barrens, but 

 swampy, clayey and rocky lands they dislike. As we rise from these localities 

 into the mountains they become rare, but not wholly absent until we closely 

 approach a Canadian environment. 



