NATURAL HISTORY, TORONTO REGION 
8. Muskrat. Ondatra zibethica zibethica (Lin- 
neus). Still common. 
9. White-footed Mouse. Peromyscus leucopus 
noveboracensis (Fischer). Common. This is the 
Mouse-like Hampster, Cricetus myiodes of Gapper. 
10. Canadian White-footed Mouse. Peromyscus 
maniculus gracilis (Le Conte). One record, Deer 
Park (now part of Toronto). N. A. Fauna 28, p. 45. 
11. House Mouse. Mus musculus Linneus. Intro- 
duced; very common according to Gapper in 1830. 
12. Brown Rat. Hpimys norvegicus (Erxleben). 
Introduced; had not penetrated further than the 
water front according to Gapper in 1830. 
13. Canadian Beaver. Castor canadensis cana- 
densis Kuhl. Once common; given by Gapper as 
very rare in 1830. A pair appeared in the grounds 
of Colonel Denison about 1884. 
14. Woodchuck. Arctomys monax monax (Lin- 
neus). Common. 
15. Chipmunk. Tamias striatus lysteri (Rich- 
ardson). Very common. 
16. Northern Grey Squirrel. Sciurus carolinensis 
leucotis (Gapper). Formerly common, becoming 
searcer; the indigenous form was black, the grey 
animal on which Gapper founded his leucotis was 
rare, but it has become much commoner since then. 
The squirrels in High Park are black and have not 
been introduced. 
17. Red Squirrel. Sciurus hudsonicus loquax 
Bangs. Very common. 
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