WHITE-FOOTED MOUSE 



without trace of pectoral spot; feet white, no dusky mark- 

 ing on tarsal joint; tail pale grayish dusky above, white 

 below." (Osgood) Total length, 7.6 inches; tail verte- 

 bras, 4.2 inches; hind foot, .8 inch. Found from north 

 central Mexico northward into southern Arizona. 



Truei Group 



True White-footed Mouse. — Peromysctis truei truei (Shu- 

 feldt). 

 Ears very large, about as long as hind foot ; pelage long and 

 soft; tail about half of total length; hind foot generally 



Fig. 77. Distribution of the subspecies of Peromyscus truei , 

 north of Mexico, after Osgood 



1. Peromyscus truei truei 



2. Peromyscus truei gilberti 



3. Peromyscus truei martirensis 



densely haired for about two-fifths of its length (proximal). 

 Upperparts varying from ochraceous buff to pale ochraceous 

 buff, or pinkish buff mixed with varying amounts of dusky; 

 grayish on face and nose; dusky on narrow orbital ring and 

 small spot at base of whiskers; ears thickly haired, dusky 

 brownish within, grayish white without; no contrasting 

 color in tufts at bases of ears; feet white, slight dusky tinge 



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