494 THE AMERICAN NATURALIST. [Vou. XXXII. 
Low took it at Lake Michikamaw. Goldthwaite trapped 
four at Rigoulette. I have also examined a mounted specimen 
from Port Burwell, collected in 1884 by Dr. Bell, in the 
Geological Survey of Canada collection. 
10. Synapromys (MicTomys) InNuITuS (True). True’s lemming. 
Mictomys innuitus True. Proc. Nat. Mus. Vol. xvii, 
No. 999. Advance sheet. April 26, 1894. 
Type Locality. Fort Chimo, Labrador. 
Known at present only by the type and one specimen, not 
typical, taken at Rigoulette by Goldthwaite. 
11. Muicrorus ENIXUS Bangs. Larger Labrador vole. 
Microtus enixus Bangs. Am. Nat. Vol. xxx, p. 105. 1896. 
Type Locality. Rigoulette, Hamilton Inlet, Labrador. 
Probably common throughout all the wooded regions, its 
range extending north to the semi-barrens and meeting that 
of the next form — M. pennsylvanicus labradorius. 
Goldthwaite took a large series at the type locality. I have 
examined three specimens in the collection of the Geological 
Survey of Canada, from “50 miles north of Fort George.” 
Turner took quite a number at Fort Chimo. 
12. 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. enixus by its smaller size, 
shorter, more hairy tail, by its smaller, flatter skull, with shorter 
rostrum and nasals, and smaller, shorter incisive foramina, dif- 
ferently shaped zygoma, and larger auditory bullæ. There are 
probably color differences also, but I have seen alcoholic speci- 
mens only. Turner took many specimens at Fort Chimo. 
13. Evoromys unGAvA Bailey. Ungava red-backed mouse. 
Evotomys ungava Bailey. Proc. Biol. Soc. Wash. p. 130. 
1897. 
