Meai'ns — 3L(inl<i)id Forma of E^iMeri) Uecrmonse. 155 



Chartirters. — Form stout: ears small, hairy ou anterior half of outer 

 surface: color decidedly paler than in the eastern forms: a whitish tuft, 

 in winter, at anterior base of ear: pelage intermediate in length between 

 the two eastern forms: skull as in the typical form. 



Color in xiimmcr. — Upperparts light bistre, sparingly lined with black 

 hairs: ears with outer surface sepia, hairy anteriorly and almost naked 

 posteriorly, thinly coated with grayish hairs on inner surface, and faint- 

 ly hoary on edge: feet and tail so scantily clothed that the skin and an- 

 nuli are visible between the hairs: tail slightly penciled: gray of under- 

 ]>arts jiartiftlly concealed by white-tipped hairs. 



In trinter the upperparts are cinnamon, coarsely but sparsely lined with 

 black: ears light brown instead of sepia, with a slight tuft of whitish 

 hair at the base anteriorly, and with faint hoary rims; underparts white, 

 the gray underfur being concealed: feel and tail moderately hairy, the 

 latter slightly penciled. 



Young mouse-gray above, grayish white below: ears slate-black on 

 anterior band, grayish posteriorly, very faintly edged with hoary: tail 

 hair-brow above, white below. ■ 



Medsurenwnts. — Length, 175 mm.: tail vertebra-, 75: hind foot, 21.5; 

 ear above crown, 11.5. 



