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ARVICOLA. 
ArveicoLa, Duméril. 
Mts, Ray, Briss., Linn., Gmel., Cuv. 
CHARACTER GENERICUS. 
Dentes incisores % simplices, elongati, recurvati; 20- 
lares  coronis lateribusque sulcatis. 
Pedes simplices; antici tetradactyli; postici pentadac- 
tyli. 
Cauda teres, pilosa, corpore brevior. 
Aures breves. 
CAMPAGNOL. 
GENERIC CHARACTER. 
Cutting teeth in each jaw two, simple, elongate, recurved. 
Grinders in either jaw six, having their crowns and 
sides grooved. 
Feet simple; anterior ones with four, hinder with five 
toes. 
Tail rounded, -hairy, shorter than the body. 
Ears short. 
Under the name Campagniol have been confounded 
several species of what are commonly termed short-tailed 
mice. 
They compose their nests of grass or moss, and place 
them beneath a large stone or in the hollow of a tree, 
leaving two entrances, to enable them to escape their ene- 
M 
