LIST OF MAMMALIA,
Collected during Mr. Rae's Expedition, with Observations by J. E. Gray, Esq., F.R.S. &c.
1. Mus Musculus. Linn. York Factory. Probably introduced from Europe.
2. Arctomys Parryi. Richardson, Faun. Bor. Amer. p. 158, tab. 10.
3. Lepus Glacialis. Leach. Richardson, Faun. Bor. Amer. 221.
Myodes.—The specimens brought by the expedition have enabled me to make some corrections in the characters assigned to these species. I may observe that the large size or peculiar form of the claws which has been regarded as a character of the species, appears to be peculiar to one sex—probably the males.
1. The upper cutting teeth narrow, smooth without any longitudinal groove. Thumb with a compressed curved acute claw. (Lemnus).
Myodes, Lemnus Pallas. Glires 77 of Sweden.
Myodes Helvolus. Richardson, Faun. Bor. Amer. p. 128, belong to this section. All the museum specimens of these species have small, simple, curved, acute claws.