\ 



No. V.] 



ZOOLOGY. 



661 



disposed by threes ; the toes are hairy above, and the hairs project beyond the 

 nails, underneath they are naked like the soles, and each is divided by five or six 

 transverse grooves into as many dark callous ridges ; the fore-feet want the thumb, but 

 in nails and all other respects are like the hind ones, being however a little smaller 

 and more slender." The animal, now under consideration, seems nearly to corre- 

 spond with the short account of a Campagnol received from Hudson's Bay by Mr. 

 Bullock, and described and figured by Dr. Leach, in the Zoological Miscellany, under 

 the name of Avicola Xanthognatha ; but the description of it in that work is scarcely 

 sufficient for identification. 



These Lemmings are spread over the whole country of North America, and extend 

 themselves even to the islands of the Polar Sea, in which they were found abun- 

 dantly, by the Expedition under Captain Parry, and have been described by Captain 

 Sabine, in his account of the Zoology observed in that voyage. They vary much in 

 size, some approaching that of a rat, the females are always the smallest. In 

 winter their coat undergoes a change to a dingy white, in summer it is dark grey, with 

 more or less of ferruginous on the sides. Hearne calls it the Hair-tailed Mouse. The 

 middle toes of the fore feet, in this species, are remarkable in having a callus 

 beneath the claw, projecting below it. It is the Mus Hudsonius of Pallas, and is 

 an animal so well known to naturalists, as to render a more detailed description 

 of it unnecessary. 



This animal which is noticed by Pennant, has escaped the observation of most 

 other naturalists, and is now described from a specimen sent home from Cumberland 

 House. In the length of its hind legs it differs from others of the genus Mus, with 

 which notwithstanding it seems proper to arrange it. The body is near four inches 

 long ; the forehead arched and projecting, so as to turn the nose towards the earth ; 

 mouth placed far below, small, and with the upper lip slit ; ears large, round, and 

 placed far back ; whiskers long, black and projecting, forming two tufts ; whole 

 upper part dark brown, under parts white without a dividing line; hind legs one 

 inch and a half long, covered with short hair, having five toes, four long ones and 

 one shorter placed on the inside ; fore feet short, with four toes ; tail two inches and 

 a half long, with dark hair above, and white below, shewing the joints of the bone, 



Lemmus Hudsonius. 



Hudson's Bay Lemming. 



Mus Labradorius. 



Labrador Mouse. 



