72 REPORT OF NEW JERSEY STATE MUSEUM. 
Sub«Family CRICETINA:. 
AMERICAN Lonc-TAILED MICE AND Rats. 
The New Jersey species fall into three genera. 
a. Size large, rat-like; molars flat on top, divided into triangles. 
NEOTOMA (Wood Rats) 
aa. Size medium, rat-like; molars tuberculate; strongly resembling a young 
Norway Rat. oRYzOMYS (Ricefield Mouse) 
aaa. Size small, mouse-like. PEROMYSCUS (Deer Mice) 
Genus NEoToMA Say and Ord. 
Wood Rats. 
Neotoma pennsylvanica Stone. 
Alleghany Wood Rat. 
Prare 20) Hic: 2) 
Length 16.40 inches. Tail nearlyas long as the body,ears prom- 
inent. Color plumbeous gray above, sprinkled with black hairs 
and with a yellowish-brown under-tone, becoming brighter and 
almost pink on the flanks. Feet gray above, white below, closely 
haired so as to obscure the scales. 
While wood rats had once or twice been reported from the 
Middle States, it was supposed that they had been brought from 
the south, where they abound, and had escaped. In 1892, how- 
ever, Mr. J. G. Dillen procured some specimens from Cumberland 
County, Pennsylvania, which he submitted to me for examina- 
tion, and I at once saw that they were of a different species from 
the southern wood rat (Neotoma floridana). Since then the 
species has been detected in rocky locations on the hills and moun- 
tains from the Hudson Highlands southward through the Alle- 
ghanies. In New Jersey the wood rats have been found only on 
Greenwood Mountain, near the lake of that name, in Passaic 
County, where Mr. Rhoads trapped several specimens in 1896 
(Proc. Acad. Nat. Sciences Phila., 1897, p. 28). It probably oc- 
curs elsewhere in the mountains. 
