30 



CASTOR. BEAVER. 



Generic Character. 



Denies Primores superiores 

 truncati, angulo transverse 

 excavati. 



Inferiores apice transversi. 



Mo/ares utrinque quatuor. 

 Cauda longa depressa squa- 



mosa. 

 Clavicula perfectae. 



Front-teeth in the upper jaw 

 truncated, and excavated 

 with a transverse angle. 



In the lower jaw transverse 

 at the tips. 



Grinders on each side four. 



Tail long, depressed and 

 scaly. 



Collar-bones in the skeleton. 



COMMON BEAVER. 



Castor Fiber. C. cauda ovata piano, caka. Lin. Syst. 2fat 



Gmd. p. 1 24. 



Chesnut-colourcd Beaver, with flat ovate naked tail. 

 Castor castanei colons, cauda horizontaliter plana. Brims 



Quadr.p. 133. 



Castor. Gesn. Quadr. 309. Aldr. dig. 277. 

 Le Castor. Buff. S. pi. 36. 

 Castor Beaver. Pennant Quadr. 2. p. 114. 



JL HE Beaver is a native of the most northern 

 parts of Europe and Asia, but is found most plen- 

 tifully in North America. It is readily distin- 

 guished from every other quadruped by the re- 

 markable structure of its tail, which is of an oval 

 form, nearly flat, but rising into a slight con- 

 vexity on its upper surface, perfectly void of hair. 



