62 REPORT OF NEW JERSEY STATE MUSEUM. 
Mr. Rhoads tells us that they were exterminated in the Green- 
wood Lake region in 1890, and in 1902 he failed to find them at 
Culver’s Lake and Long Pond. 
Lepus americanus virgimanus Rhoads, Mam. of Pa. and N. 
J. SQOs pe 11S. 
Lepus americanus Rhoads, Proc, Acad. Nat. Sci. Phila., 1897, 
pr 25: 
Family ERETHIZONTID. 
PORCUPINES. 
Genus ERETHIZON Cuvier. 
Erethizon dorsatus (uimnasuays 
Canada Porcupine. 
PLATE 18. 
Length, 28 inches. Dark brown or nearly black, quills tipped 
with yellowish, two to four inches long, more or less covered by 
the hair, which reaches a length of six inches. Toes, four on the 
front feet and five on the hind. 
This curious beast of the north woods, like the varying hare, 
is being driven back by the advance of the lumberman, and is 
already a thing of the past in many a spot where it formerly 
abounded. 
The northern mountains of New Jersey were at one time in- 
habited by porcupines, but the animal is now extinct in the State 
so far as we know, although Mr. Rhoads thinks it may occa- 
sionally cross the Delaware from Pike county in Pennsylvania 
(Mammals of Penna. and N. J., p. 116). 
Erethizon dorsatum Rhoads, Mam. Pa. and N. J., 1903, p. 114. 
Family ZAPODIDZ. 
JUMPING MICE. 
These curious little mouse-like creatures differ from all of our 
true mice in the coarseness of their fur and in the immensely long 
tail and hind legs which adapt them for the wonderful jumping 
that characterizes them. 
