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 XVI. — LEPORID^. 



{The Hares.) 



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

 placed behind the principal pair, which are grooved in 

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

 distributed. 



/. LEPUS, Linnaeus. Hares. 



* Fur white in winter. 



1. L. amenicanus, 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 liead; gray above, varied with black, and more 

 or less tinged with yellowish brown; below w4iite. U. S. 

 eastward; less northerly than the preceding. Two 

 Southern species, X. palustris^ Bach., the Marsh Rabbit, 

 and L. aqwiticns^ Bach., the Water Rabbit, abound in 

 S. Ills. (Nelson) 



