P 10 British CoLuMBIA. 3 1920 


In April, 1909, the Bureau of Biological Survey, United States Department of Agriculture, 
published a revision of the American genus Peromyscus by Mr. Wilfred H. Osgood. ‘This work 
has made it possible, to a reasonable degree of certainty, to classify, at least geographically, the 
several species occurring throughout our range, represented by the following :— 
Peromyscus maniculatus arcticus (Osgood). Geographically distributed through the interior 
of North-west Canada, from South-eastern Saskatchewan north along the Mackenzie River, west 
to the upper waters of the Yukon River, then south to Eastern Alberta, in the Canadian and 
Hudsonian zones. 
The British Columbia specimens identified as this species were taken in the Cariboo and 
Telegraph Creek Districts. 
Peromyscus maniculatus oreas (Bangs). Type locality, Mount Baker Range, B.C., A. C. 
Brooks, distributed through the Puget Sound region in the mountains and coast of Western 
Washington, north to Southern British Columbia, south to the Columbia River. 
Peromyscus maniculatus keeni (Rhoads). A small white-footed mouse occurring on the 
Queen Charlotte Islands, the type of which is from Masset, Graham Island. 
Peromyscus maniculatus macrorhinus (Rhoads). On the Coast of the Mainland of 
Northern British Columbia and Southern Alaska; type collected by the Rev. J. H. Keen at 
the North Pacific Salmon Cannery, mouth of the Skeena River. 
Peromyscus maniculatus artemisie (Rhoads). Ranges through South-Central British 
Columbia, south through parts of Washington, Idaho, and Western Montana, in the Transition 
and Canadian zones; type from Ashcroft, B.C. 
Peromyscus maniculatus saturatus (Bangs). Type locality, Saturna ‘Island, Gulf of Georgia, 
B.C., to which it is entirely confined. 
Peromyscus maniculatus austerus (Baird). Geographic distribution over the Coast region 
of Puget Sound, Washington, north to Southern British Columbia and including Vancouver 
Island. 
Peromyscus sitkensis prevostensis (Osgood). So far only recorded from Prevost Island, 
Queen Charlotte Islands, and Forrester Island, Alaska. 
Genus Microtus. 
Voles, or meadow-mice, occur throughout the greater part of the Northern Hemisphere north 
of the Tropics, and both species and individuals reach their maximum abundance in the Canadian 
and Transition zones, a few species occurring to the north in the Hudsonian and Aretie “ODER 
even in the barren grounds north to the Arctic Coast. 
They adapt themselves to the most diversified conditions of environment, inhabiting all 
classes of ground, from dry arid regions to wet swamps, a few species being aquatic in their 
habits. 
The following species are represented in the Province of British Columbia :— 
Microtus drummondi (Aud. & Bach.) (Drummond's Vole). Geographically distributed from 
the Hudson Bay to the west slope of the Rocky Mountains, the type locality being in the vicinity 
of Jasper House, Alberta. 
Microtus townsendi (Bachman) (Townsend Vole). Distributed through the low country 
west of the Cascades, from Port Moody, B.C., south to the Willamette Valley and to Yaquina 
Bay, Oregon, in the Transition zone. 
Microtus tetramerus (Rhoads) (Vancouver Vole). The distribution of this vole, so far as 
known, is the southern end of Vancouver Island; type from Beacon Hill Park, Victoria, and 
described from the type, and seventeen specimens collected near type locality. 
Microtus mordaz (Merriam). Ranges from latitude 60, Rocky Mountains and outlying 
ranges, to Northern New Mexico; common in Canadian and Hudsonian zones; specimens recorded 
from Nelson, Sicamous, Hope, Shuswap, Glacier, Okanagan, and Bennett City. 
Microtus serpens (Merriam). Distributed through the low country of Southern British 
Columbia and Northern Washington between the Cascade Mountains and Puget Sound. 4 
Microtus nanus canescens (Bailey) (Gray Vole). East of the Cascades in Northern 
Washington and Southern British Columbia; specimens recorded from Okanagan, Vernon, and 
Ducks, B.C. 

