1880.] 



THE MAMMALS OF ASIA MINOR. 



63 



Ears moderate, well haired towards their margin, showing distinctly 

 above the fur. Tail hardly longer than the hind foot, and a little 

 more than one fifth the length of the head and body. Soles densely 

 haired almost to the roots of the toes ; fore feet with five tubercles, 

 arranged three and two, besides the very small rudimentary thumb, 

 which has no nail ; hind feet with five tubercles closely set, and ar- 

 ranged two, two, and one (fig. 7, c). .li^,,^ ^j, :j.a.^_^ r 



a 



Arvicola guentheri. 



a, upper molars ; b, lower molars (maguifled six diameters) ; 

 c, sole of hind foot (natural size). 



Teeth very similar to those of A. arvalis, the molar pattern 

 being : — 



Upper I. 5 prisms, 6 angles. Lower I. 9 prisms, 9 angles. 

 » II. 4 „ 5 „ „ II. 5 „ G „ 



» III. a „ 7 „ „ III. 3 „ 3 „ 



But the posterior prisms of the first and second upper molars are 

 dilated behind, and that of the third is produced behind its inter- 

 nal projection. The first three prisms of the first lower molar are 

 imperfectly separated (fig. l,a, b). 



Upper parts yellowish mouse-grey, the tips of the hairs being 

 either light fawn or black ; on the flanks this colour passes insen- 

 sibly into the greyish white of the lower parts, which is slightly 

 washed with yellow on the belly. Feet greyish white. Tail rather 

 thinly clad with short white hairs ; these are mixed on its upper 

 surface with dusky hairs, which are most conspicuous near the point. 

 Measurements (in spirits) : — 



iuelies. inches. 



Length of head and body .... 4-00 4-25 



tail ' -82 -77 



,> ear -40 -42 



„ hind foot -75 -75 



