1898.] 



NATURAL SCIENCES OF PHILADELPHIA. 



365 



ochraceous-buff, finely ' lined ' with black. Belly clear buff, shading 

 to grayish on the throat. Feet buffy- whitish ; face mixed buffy and 



Fig. 2. Enamel pattern of Evotomys rutilus (a), E. wosnessenskii (b), E. 

 •alascensis (c), and E. rufoca?ius(&). Lower teeth below, upper teeth above. 

 (xlO). 



reddish. Ears con color, with dorsal stripe. Tail sharply bicolor, 

 buffy below, brownish tinged with red above. 



A series of seventeen skins taken at St. Michaels, Alaska, during 

 October and November show little variation in] color. In some 

 specimens there is less of the buff wash on the belly, but this is ab- 

 sent in one only. Several are much darker below than the type. 

 In one immature individual the red of the dorsal stripe is much 

 duller than in the adults. 



Measurements. — For measurements see accompanying table. 



