* 
r 
Dr. Gapper on the Mammalia of Upper Canada. 201 
Art. XXXI. Observations on the Quadrupeds found in the 
District of Upper Canada extending between York and 
Lake Simcoe, with the view of illustrating their geographi- 
cal distribution, as well as of describing some Species hi- 
therto mas Dr. Gaprer. 
The sign * denotes that I have seen but imperfect specimens; ** that I have 
only been told of the existence of the species. The numbers prefixed refer 
to Dr. Richardson’s ‘‘ Fauna Boreali- Americana,” 
(1.) Vespertilio pruinosus (Say.)* Hoary Bat. 
(2.) subulatus (Say.) Say’s Bat. 
The most common Bat in the home district. It agrees exactly with 
Dr. Richardson’s description ; the measurement is nearly the same. 
| Sorex Forsteri (Richardson.) Tas. vit. Forster’s Shrewmouse, 
‘The first upper grinder is certainly larger, not smaller, than the two 
next; in other respects Dr. Richardson’s description of the dentition 
agrees exactly.t The length of the head and body is 2} inches : that of 
the tail rather more than 14 inch. Two specimens weighed 42 grains each. 
The tail is square, and rather largest in the middle. The colour of all 
the upper parts is nearly a middle tint of burnt umber ; the under parts 
are light yellowish brown ; the feet are rather darker than the belly. 
This little animal is very common in this district, and J have fre- 
quently found it frozen on the surface of the snow in the beech and 
maple woods. ‘The only two specimens which I could procure in a good 
+ If Dr, Richardson’s description of the dentition of Sor. Forsteri be correct 
with respect to the first upper grinder being smaller than the two following 
ones, this must be, I should think, a distinct species, but as that tooth is the 
largest in all other species which I have examined, I am inclined to think that 
it is a mis-print. The length of the tail also differs, but as the Doctor says 
that his description was made from at prepared specimen, this may arise from 
shrinking in drying, 
