No. 379.] THE MAMMALS OF LABRADOR. 493 
Common from the St. Lawrence north to the semi-barrens. 
Turner took a specimen at Fort Chimo. This skin (no 
skull can be found) is in the National Museum, where I 
examined it. It is nearly uniform black, with but very few 
lighter rings on the long hairs and quills. The densely woolly 
hair is very long, entirely concealing the quills. The tail is 
short. 
I feel sure this porcupine represents a good geographical 
race. Skulls of the porcupine from as far north as Nova Scotia 
begin to show differences from those of New Hampshire and 
Maine, and undoubtedly these characters will prove to be car- 
ried farther still in Labrador specimens. 
6. ZAPUS HUDSONIUS HUDSONIUS (Zimmermann). Jumping 
mouse. 
Dipus hudsonius Zimmermann. Geog. Gesch. Vol. ii, 
p. 358. 1780. 
Apparently not common. Goldthwaite took three at Rigou- 
lette, Hamilton Inlet, all in the spruce woods. 
7. Zapus insicnis Miller. Woodland jumping mouse. 
Zapus insignis Miller. Am. Nat. Vol. xxv, p. 742. 1891. 
Low took one specimen at Hamilton River. This is mounted 
and in the Geological Survey of Canada collection. I have 
examined it and do not feel at all sure that more specimens 
would not show the Labrador form to be a good sub-species. 
8. FIBER ZIBETHICUS ZIBETHICUS (Linn). Muskrat. 
Castor zibethicus Linn. Syst. Nat.’ Ed. xii, vol. i, p. 79. 
1766. 
Low says of the muskrat that it is common in the southern 
wooded region, but rare along the Upper Hamilton River. 
Goldthwaite took one at Rigoulette. Turner took it at Fort 
Chimo. 
9. Dicrostonyx HUDSONIUS (Pallas). Hudson Bay lemming. 
Mus hudsonius Pallas. Glir. p. 203. 1778. 
Found throughout the barrens and on the treeless hills, 
south, at least, to Hamilton Inlet. 
