168 PHENACOMYS. 



Genl. Char. Size small, colors pale; front lower molar with five 

 salient angles on outer side. 



Color. Above grizzled grayish brown, tinged with yellow, and 

 sprinkled with black ; dorsal region darkest ; under parts grayish 

 white. Tail almost black above, white below. Feet pale brownish. 



Measurements. Total length, ii8; tail vertebrae, 28; hind foot, 

 18; ear, 13. 



233. orophilus. {Phenacomys'), Merr. N. Am. Faun., No. 5, 1891, 



p. 65. 



truei, Allen, Bull. Am. Mus. Nat. Hist., 1894, p. 331. 



oramoniis, Rhoads, Am. Nat., 1895, p. 941. 



Type locality. Salmon River Mountains, Idaho. 



Geogr. Distr. Alberta, British Columbia, and western United 

 States to southern central Oregon, central Idaho and southern 

 Wyoming. 



Genl. Char. Small; color light gray; interorbital region of skull 

 narrow; ascending branches of premaxillae narrow. 



Color. Above grizzled grayish brown, tinged with yellow, lined 

 with black; under parts soiled white; feet pure white. Tail mixed 

 brown and white above, pure white beneath. Under fur plumbeous. 



Measurements. Total length, 146; tail vertebra:, 38; hind foot, 19. 



234. olympicus. {Phcnacomys), Elliot, Pub. Field Columb. Mus., 



1899, I, p. 225, Zoology. 



pumilus, Elliot, Pub. Field Columb. Mus., 1899, p. 258, Zoology, 

 juv. 



Type locality. Happy Lake, Olympic Mountains, Clallam County, 

 Washington. 



Geogr. Distr. Known only from type locality, and Boulder 

 Lake, Olympic Mountains. 



Genl. Char. Smaller than P. orophilus, with longer tail and 

 darker pelage. 



Color. Upper parts dark cinnamon, grizzled with tawny ochra- 

 ceous; flanks paler. Under parts whitish, base of hairs plumbeous; 

 legs and feet white. Tail above like back, beneath white. 



Measurements. Total length, 125; tail vertebrae, 27; hind foot, 

 15; ear, 9. 



235. preblei. (Phenacomys), Merr. Proc. Biol. Soc. Wash., 1896, 



P- 45- 

 Type locality. Long's Peak, Colorado. 

 Geogr. Distr. Known from type locality only. 



