34 MAMMALS. 



/. ERETHIZON, F. Cuvier. AMERICAN PORCUPINES. 



1. E. dorsatus, (L.) F. Cuvier. WHITE-HAIRED PORCU- 

 PINE. Dark brown, spines chiefly white. N. Am., S. to 

 Mexico. 



FAMILY XVL LEPORID.E. 



(The Hares.) 



Incisors f, the extra pair in upper jaw small, and 

 placed behind the principal pair, which are grooved in 

 front; molars f;f. A single well-known genus, widely 

 distributed. 



/. LEPUS, Linnasus. HARES. 



* Fur white in winter. 



1. L. americanus, Erxleben. WHITE RABBIT. NORTH- 

 ERN HARE. Size large; hind feet longer than head; 

 ears about equal to length of head; fur, in summer, 

 cinnamon brown, in winter, becoming white, at the 

 surface, plumbeous at base, with a broad median band 

 of reddish brown. Wooded districts, New England to 

 Minn., and S. to Va., along the Alleganies. 



** Fur never white. 



2. L. sylvaticus, Bachman. GRAY RABBIT. Size 

 small; hind feet not longer than head; ears two-thirds 

 length of head; gray above, varied with black, and more 

 or less tinged with yellowish brown; below white. U. S. 

 eastward; less northerly than the preceding. Two 

 Southern species, L. palustris, Bach., the Marsh Rabbit, 

 and L. aquations, Bach., the Water Rabbit, abound in 

 S. Ills. (Nelson.) 



