Dr. Gapper on the Mammalia of Upper Canada. 203 



insertion of the tail, 12 inches; of the tail itself 6 inches. It was a 

 female, and its stomach contained the half-digested remains of a frog. 

 There are two stufted specimens of a larger species of Mink preserved 

 in the Museum at New York : perhaps this may be M. Cuvier's Mustela 

 Vison, since the Baron could hardly have overlooked the character which 

 led him to devise the genus Mustela. 



(17.) Mustela Martes (Linn.) The Pine Marten. 



The Pine Marten is very common about Bristol, and I have seen many 

 specimens, all differing from the Canadian animal in the patch of yel- 

 low on the throat being uniform in colour and figure ; whereas in the 

 Canadian Pine Martens the patch is irregular in shape, and spotted with 

 brown, the head is also grey and fox-like. There is a Marten described 

 in Silliman's Journal as the Fox-like Marten, and those in this district 

 appear to belong to that species or variety, for it must be granted that 

 individuals are to be found approaching very near our species in the 

 particulars above noticed. 



(18.) Mustela Canadensis (Linn.) The Fisher or Pekan. 



Length from the nose to the insertion of the tail 19^ inches ; of the 

 tail 15| inches. The specimen was a female. 



(19.) (Mephitis) Americana.** The Skunk. 



(20.) Lutra Canadensis (Sabine.)* Canada Otter. 



(22. A.) Canis Lupus griseus.* The gray Wolf. 



(26.) Canis (Vulpesj fulvus (Desmarest.) The American Fox. 



(26. y.) argentatas (Desmarest.) Black or Silver Fox. 



(30.) Felis Canadensis (Geoffroy.)** Canada Lynx. 



(33.) Castor Jiber (Linn.) The Beaver. 



Now very rare, though their old embankments are to be still seen on 

 most streams. 



(34.) Fiber zibethicus (Cuvier.) The Musk-rat or Musquash. 



(35.) Arvicola riparius (Ord .') Bank Meadow Mouse. 



Length of the head and body 5^ inches ; of the tail 2 inches. This is 

 the most common Mouse in the fields of Upper Canada, making shallow 

 burrovra under every fallen tree, and also under rails, hay-ricks, &c., and 

 in the winter beneath the snow. The female makes her nest of grass, 

 under logs. It frequents also the barns. 



