FIELD BOOK OF MAMMALS 



Alaska White-footed Mouse. — Peromyscus maniculatus 

 hylcBus (Osgood). 

 Slightly darker than oreas, with smaller ears and shorter 

 tail. Upperparts russet, heavily mixed with dusky, with 

 dark dorsal saddle. Total length, 7.6-8.2 inches; tail ver- 

 tebrae, 3.6-4.2 inches; hind foot, .88-.94 inch. Found on 

 "Islands and coast of southeast Alaska west and northwest 

 of the range of P. m. macrorhinus, including Prince of 

 Wales, Kupreanof, Mitkof, and Admiralty islands, and the 

 mainland coast from Lynn Canal to Frederick Sound." 

 (Osgood) 



Queen Charlotte Island White-footed Mouse. — Peromyscus 



maniculatus keeni (Rhoads), 

 Resembling oreas but ears smaller and tail shorter. Upper- 

 parts russet, with dusky mixture darkest in middle of back. 

 Total length, 7.5-8.5 inches; tail vertebras, 3.8-4.5 inches; 

 hind foot, .88-92 inch. Found on " Moresby and Graham 

 islands, Queen Charlotte Group, British Columbia." 

 (Osgood) 



Yukon White-footed Mouse. — Peromyscus maniculatus algidus 

 Osgood. 

 Resembling hylceus but paler and grayer; tail and ears 

 shorter than in oreas. Upperparts cinnamon, with dusky 

 mixture lighter on sides and heaviest on middle of back; 

 dusky orbital ring and whisker spot less conspicuous than 

 in hylceus. Total length, 7.1-8.2 inches; tail vertebrse, 3.3- 

 4 inches; hind foot, .88-.94 inch. Found in "Region of the 

 headwaters of the Yukon River from Lake Bennett to the 

 lower part of the Lewes River." (Osgood) 



Skeena White-footed Mouse. — Peromyscus maniculatus 

 macrorhinus (Rhoads). 

 Very large and dark-colored. Resembling oreas but much 

 larger and not as long tailed, relatively. Upperparts rich 

 warm brown, with russet tinge, darker on mid-back, which 

 is burnt umber ; orbital ring and whisker spot sooty ; under- 

 parts creamy white. Total length, 8--8.9 inches; tail verte- 

 bras, 4.2-4.9 inches; hind foot, .9-1.0 inch. Found on 

 "Mainland coast of northern British Columbia and south- 

 ern Alaska." (Osgood) 



Sagebrush White-footed Mouse. — Peromyscus maniculatus 

 artemisice (Rhoads). 

 Resembling borealis but rather paler in color. Upperparts, 

 pale cinnamon to brownish fawn, more dusky along mid- 

 back; very little white in subauricular tufts. Total length 

 6.2-7.6 inches; tail vertebras, 2.6-3.4 inches; hind foot, 

 .76-88 inch. Found in "South central British Columbia, 

 northeastern Washington, northern Idaho, western Mon- 

 tana, and western Wyoming. Transition and Canadian 

 Zones." (Osgood) 



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