30B ADDENDA. 



as the frost commences, they shut themselves up 

 in their caverns, and continue until the spring 

 opens. The flesh of this animal is not unpleasant 

 to the taste. 



Inhabit the plains of the Missouri. (Lewis and 

 Clark.) 



Species. 



3. Arctomys riifa* 



iSewellel, of the Indians of the western coast, 

 Lewis and Clark's Exped. up the Missouri, voL 

 ii. p. 176. 



^nisonyx rtifa, Rafinesque, Amer. Mon. Magaz. 

 who has confounded it with the preceding species. 



Char. Essent. General colour reddish-brown j 

 fur short, thick and silky; ears short, thin and 

 pointed, covered with hair. 



Dimensions. Total length, from fourteen to 

 eighteen inches (of the dressed skin, from which 

 the tail is always separated by the Indians.) 



Description. Ears short, thin, and pointed, and 

 covered with a fine short hair, of a uniform reddish- 

 brown; the bottom or the base of the long hairs, 

 which exceed the fur but little in length, as well 

 as the fur itself, are of a dark colour next the 

 skin for two-thirds the length of this animal ; the 

 fur and hair are very fine, short, thickly set, and 

 silky ; the ends of the fur and tip of the hair are 

 of a reddish-brown, and that colour predominates 

 in the usual appearance of the animal. 



