No. 379.] THE MAMMALS OF LABRADOR. 503 
Remarks. Mr. Sornborger brought back from Labrador last 
summer three skulls of M. drumalis, all from Okak. They 
are unsexed, though all are undoubtedly males. Two are adult 
and one a young adult, with the nasal sutures plainly visible. 
When compared with skulls of true M. americana from Maine, 
Quebec, etc., these Labrador skulls show very striking differ- 
ences ; their large size, short, wide rostrums, and enormous 
SkuLts or M. BruMALIS. 
teeth at once distinguishing them. Compared with skulls of 
M. caurina the likeness in these respects is greater, but the 
highly arched frontals and large, deep auditory bulle of 
M. brumalis are very different from the flattened frontals and 
small, short, totally differently shaped auditory bullæ of that 
species, 
It is very much to be regretted that there are no skins of 
M. brumalis for comparison, as from Low’s casual remark, 
quoted above, I feel sure there are external characters by 
which M. brumalis can be told from M. americana. 
