370 



PROCEEDINGS OF THE ACADEMY OF 



[1898. 



Fig. 3. Side view of molars 

 upper figure Evotomys, lower fig 

 ure Aschizomys (x 2f). 



External form. i — Ears broad and rounded, longer than the fur imme- 

 diately in front of their bases. (In the dry skin the ears have shrunk 

 considerably and appear much shorter than the surrounding fur). 



Muzzle hairy ; septum of the nostrils 

 naked, the free edges crenulate and 

 grooved transversely. 



Fore feet large, with five prominent 

 tubercles. Palms naked, claws short 

 and stout; thumb rudimentary, with a 

 convex, compressed nail. 



Hind foot broad ; soles with six tu- 

 bercles, of which five are subequal and 

 one much smaller. Hinder part of 

 sole densely hairy as far forward as the 

 posterior tubercle; anteriorly granu- 

 lar, with a considerable number of 

 short, white hairs interspersed among 

 the' granules. Claws moderate, over- 

 hung with white hairs. Tail club-shaped. Whiskers long, reach- 

 ing to the shoulder. 



Fur and color. — The fur is everywhere dense, soft and silky, that 

 on the back about 10 mm. in length ; on the belly it is nearly as 

 long. Throughout the pelage the hairs are slate-gray at base. On 

 the back the slaty portion occupies about the basal two-thirds of the 

 hairs. Beyond this is a narrow subterminal band of pale yellowish 

 wood-brown. The extreme tips of the hairs are sepia. The result- 

 ing surface color is a fine grizzle of sepia and yellowish-brown, very 

 uniform throughout the dorsal surface. There is no indication of a 

 darker dorsal area, but the shading is slightly heavier across the 

 lumbar region than elsewhere. In front of each ear is an indistinct 

 tuft of whitish hairs. Sides, belly, all four feet and legs, and under 

 side of tail light straw-yellow, sharply defined from color of dorsal 

 surface. 



This description can be only approximately correct, since it is 

 taken from the skin which had been immersed in alcohol for many 

 years. 



Tail. — Before skinning, the tail was club-shaped, and in its pres- 

 ent condition it retains a trace of this form. For a short distance 



4 From notes made by Mr. F. W. True before the specimen was removed 

 from alcohol. 



