316 



RODENTIA . 



AllVICOUDJ;. 



ARVIOOLIDM. 



Genus Arvicola. (Lacep.) 



VOLE. 



Generic Cha/racter. — Grinding- tcetli §:§, deeply snlcated externally; ranzzle 

 ahtuse ; toes separate ; tail round and hairy, shorter than the body. 



WATER VOLE. 



WATER RAT. 



Arvicola amphibius. (Desmar.) 



Specific Character. — Greyish-brown, with a reddish or yellowish tinge ; 

 paler beneath ; sometimes of a uniform black all over. Tail about one-half 

 the length of the body, or even less. The second upper grinder has four 

 cemental spaces and five angles ; the third has five spaces, imperfectly separated, 

 and seven angles. 



Mm amphibius, Lihn. Syst. Nat. edit. xii. I. p. 82. Moll. Zool. 

 Dan. Prod. p. 5, sp. 30. Erxleb. Syst. p. 86, 3. 



,, aquations, Beisson, Eeg. Anim. p. 175. 



,, terrestris, Lihn. Syst. Nat. Edit. xii. p. 82. 



Lemnius aquaticus, Fe. Cuviee, Diet. des. Sc. Nat. VI. p. 306. 



Arvicola amphibius, Desmar. Mammal, p. 280, sp. 435. 



,, amphibia, Jehyns, Brit. Vert. p. 33. 



,, aquatica, Flem. Brit. An. p. 23. 



