^8 LIST OF VERTEBRATES. 



CLASS V. MAMMALIA. THE MAMMALS. 



Order XXIV. GLIRES. The Rodents or Gnawers. 

 Family 59. LEPORID^. The Hares. 



Lepus, Linnaeus. 



L. Americanus, Erxleben. White Rabbit. Northern Hare. Common. 



Family 60. HYSTRICID^. The Porcupines. 



Erethizon, Frederic Cuvier. 



E. dorsatus (I..). Canada Porcupine. Not rare. This is wrongly called 

 " Hedgehog", which is European. 



Family 61. ZAPODIDJE. The Jumping Mice. 



Zapus, Coues. 



Z. Hudsonius (Zimmerman). Jumping Mouse. Rare. 



Family 62. MURID^. The Mice. 



Fiber, Cuvier. 



F. zibethicus (L.). Muskrat. Common. 

 ArviCOla, Lacepede." Field Mice. 



A. Pennsylvanicus, Ord. Meadow Mouse. Abundant. 



Evotomys, Coues. 



E. rutilus (Pallas). Long-eared Mouse. Rather rare. 



Calomys, Waterhouse. 



C. Americanus (Kerr). Common White-footed Mouse. Dormouse. Com- 

 mon. 

 Mus, Linnseus. Old World Rats and Mice. 



M. decumanus, Pallas. Prown or Norway Rat. Abundant. 



M. rattus, L. Black Rat. Common. 



M. musculus, L. Common House Mouse. Too abundant. 



Family 63. CASTORID^. The Beavers. 



Castor, Linnaeus. 



C. fiber, L. Beaver. Very rare. C. A. Downs. 



