124 GILPIN — ^ON THE MAMMALIA OF NOVA SCOTIA. 



Mus decmnanus, Pallas, — Brown Rat. 



Mils musculus, Linn., — Common Mouse. 



Mus rattus, Linn., — Black Rat. 



Hesjyeromys hucopus, Rafinesque, Baird, — White-footed Mouse, 



Hesperomys myoides^ Baird, — Hamster Mouse. 



Arvicola gapperi, Vigors, Baird, — Gapper's Mouse. 



Arvicola riparia^ Ord, Baird, — Meadow Mouse. 



Fiber zihethicus^ Baird, Richardson, — Musk Rat. 



Erethizon dorsatus, Linn., Baird, — H. pilosa, Richardson,-— 



Porcupine. 

 Lepus americanus^ Erxleben, Baird, Richardson, — Hare. 



Of the sixteen species here enumerated we find a tree squirrel, a 

 flying squirrel, and a ground squirrel, all northern forms, two partially 

 hybernating, and laying up winter stores, the other totally disappearing 

 beneath the ground in winter. We find also a marmot peculiarly north- 

 ern in his hybernation and gross fat, I cannot but think that Pruinosus 

 of Richardson will be found only a northern variety of Monax. Speci- 

 mens are found here so very hoary, with the hair on the shoulders so 

 much longer than on rump. I have also seen them flattening themselves 

 on the ground, as Audubon describes Pruinosus as doing at the 

 Zoological Gardens, Loudon. To the historical beaver succeeds the 

 sub-family of mice. Of the three introduced species, the common mouse 

 has penetrated everywhere, the brown rat chiefly on the sea-board, and 

 the black rat very rare ; I suspect some, if not all, come to us from the 

 West Indies Our indigenous species so far identified are the very 

 beautiful jumping mouse — the white-footed mouse with his closely allied 

 congener, the hamster mouse, differing only in having a longer tail, and 

 cheek pouches, — and two voles. I think another voie may be added to 

 our list. The junaping mouse and the voles ^11 hybernate, the others but 

 partially, laying up stores of beech mast and grain in hollow trees, and 

 often found lively at mid winter. The musk-rat, porcupine, and varying 

 hare, all northera forms, close the list ©f our Rodents. 



RUMINANTIA, 



Oervus alces, Linn., Richardson, ^ 



A.lces^ americanus , Jardine, Baird, > The Moose. 



Alces muswa, Richardson, j 



Rangifer caribou, Ham Smith Baird, ) ^^^.^^ Reindeer. 



Uervus tarandus sytvestms-, Kichardson. ) 



Our list ends with the truly ©oble, antlered and boreal forms of our 

 two species of deer. Of these the caribou supposed identical with the 

 reindeer of Euroipe, though not p-roveu, but differing from the barren 



