92 RODENTIA. 



feet dirty white. Fm- on the upper parts of the body 

 rusty red, ash-grey on the sides, more or less bright accord- 

 ing to the season, the hair being tipped with blackish ; under 

 parts whitish, tinged with bright red-brown when in a 

 perfect state. In young animals this red colour appears 

 strongly only on the top of the head and on the middle of 

 the back, the rest of the upper part of the body being 

 largely mingled with dark ash ; has thirteen pairs of ribs. 



Length of head and body, 3 inches 2 lines ; head, 1 

 inch ; ears, 5 lines; tail, 1 inch 11 lines. — F. M. 



Has been found in a few places in England ; in the 

 North and centre of France near Lyons. In Belgium it 

 is spread nearly all over the country, in damp woods near 

 streams ; also throughout the greater part of Germany, 

 Hungary, Denmark, Croatia, and Southern Russia to the 

 Ural Mountains, as well as in Moldavia. 



Arvicola incertus. 



Arvicola incertus, De Selys, Eevue Zool. 1843 ; Chespon, Faun. 

 Merid. 1844; P. Gervais, Zool. et Paleon. Franc. 1852. 



Description. — Fur on the upj)er parts reddish brown, in- 

 clining to yellowish ; cheeks and flanks of the same colour ; 

 all the lower parts and the legs dark ash-colour; toes 

 furnished with small whitish hairs ; nails reddish ; tail 

 brown above, lighter beneath, with a small tuft of hairs 

 at its extremity ; ears velvety on the outside, hidden by 

 the fui- ; muzzle blunt, very hairy ; whiskers of medium 

 length, whitish ; eyes small, black. The fur of the body 

 is soft to the touch ; the hairs are slate-colour from the 

 base to two -thirds of the entire length. 



The head and body measure 9 centimetres; the tail 

 4 centimetres (Crespon). 



M. de Selys Longchamps inclines to consider this animal 

 as a variety of A. Savii, but M. Crespon and M. Gervais 



