462 APPENDIX IV 
This northern form has,’so far as I know, been taken in the Labra- 
dor peninsula only at Fort Chimo, Ungava, whence it ranges west 
at least to Godbout, Quebec. 
29. PHENACOMYS CELATUS CRASSUS Bangs. South Labrador 
phenacomys. 
Phenacomys celatus crassus Bangs. Proc. New Eng. Zoél. Club, 
Vol. Il, p. 39. 1900. 
Type Locality. Rigolet, Labrador. 
This is a southern form occurring in the eastern forest belt from 
L’Anse au Loup north at least to Hamilton Inlet; it is much larger 
than true P. celatus, being the largest member of the genus yet known. 
30. EvoToMys UNGAVA Bailey. Ungava red-backed mouse. 
Evotomys ungava Bailey. Proc. Biol. Soc. Wash., p.130. 1897. 
Type Locality. Fort Chimo, Labrador. 
Probably restricted to the barrens and semi-barrens. Turner 
reported the species to be abundant at Fort Chimo, but apparently 
did not send many specimens to Washington. 
The differences between this and the next species appear to be 
as great as between any two members of the genus Evotomys. 
31. Evoromys protreus Bangs. Hamilton Inlet red-backed mouse. 
Evotomys proteus Bangs. Proc. Biol. Soc. Wash., p. 137. 1897. 
Type Locality. Rigolet, Hamilton Inlet, Labrador. 
Very abundant at Hamilton Inlet, and probably throughout the 
wooded regions. Goldthwaite took a large series at Rigolet, and 
Doane found it very abundant in the woods, in the neighbourhood 
of Black Bay. 
32. MIcROTUS PENNSYLVANICUS LABRADORIUS Bailey. Small 
Labrador vole. 
Microtus pennsylvanicus labradorius Bailey. Proc. Biol. Soc. 
Wash., p. 88. April 30, 1898. 
Type Locality. Fort Chimo, Ungava, Labrador. 
This little vole probably occurs only in the barrens and semi- 
barrens. It can be told from M. enizxus by its smaller size, shorter, 
more hairy tail, by its smaller, flatter skull, with shorter rostrum 
and nasals, and smaller, shorter, incisive foramina, differently 
shaped zygoma, and larger auditory bulle. There are, probably, 
colour differences also, but I have seen alcoholic specimens only. 
Turner took many specimens at Fort Chimo. 
33. Microtus Enrxus Bangs. Larger Labrador vole. 
Microtus enixus Bangs. Am. Nat., Vol. XXX, p. 105. 1896. 
Type Locality. Rigolet, Hamilton Inlet, Labrador. 
Probably common throughout all the wooded regions, its range 
extending north to the semi-barrens and meeting that of MZ. penn- 
sylvanicus labradorius. 
Goldthwaite took a large series at the type locality. I have 
