1911] Taijlov: Mammals of the 1909 Nevada Expedition. 273 



from the type locality are said to measure as follows": total 

 length, 243 ; tail vertebrae, 143.5 ; and hind foot, 39.9. 



The coloration of nevadensis is described (Merriam, 1894b, p. 

 Ill) as follows : "Upper parts pinkish buff, darkened on head and 

 back by intermixture of dark-tipped hairs; facial crescents dis- 

 tinct but hardly meeting across nose, though bridge of nose is 

 somewhat darkened; face in front of eyes pure white except 

 where interrupted at base of whiskers by facial crescents ; under- 

 parts and thigh stripes pure white; dorsal and ventral tail 

 stripes dusky, meeting at end of tail; inner side of legs to heel 

 dusky. ' ' 



Although our specimen has the upper parts pinkish buff, it 

 has no dark-tipped hairs on the head and back, its facial cres- 

 cents are obsolete, and the bridge of the nose is not appreciably 

 darkened. The face in front of the eyes is white, with the excep- 

 tion of a very faint suggestion of buffy on the sides of the nose. 

 The underparts and thigh stripes are pure white. The dorsal 

 and ventral tail stripes are very light clay color, meeting at the 

 end of the tail. The inner side of hind leg to heel is clothed with 

 plumbeous hairs tipped with buffy. There is, moreover, a dis- 

 tinct spot of white above the eyes, and the area just behind the 

 ears is white. 



The specimen presents some resemblance to Dipodom.ys mer- 

 riami simiolus. 



