132 PEROMYSCUS. 



Geogr. Distr. Labrador, limits not determined. 



Genl. Char. Skull large, broad, brain case flat; rostrum heavy. 



Color. " Supra fulignoso-bruneus, subtus abrupte albus; auri- 

 culis elongatis; pedibus albentibus; cauda supra nigra, infra abrupte 

 albida." 



Jfc-tisiiremc/i/s. " Korper 3" 2'"; Schwanz 2" 5"'." "Total 

 length, 166; tail vertebrae, 74; pencil, 5; hind foot, 19. 5." (Bangs.) 



168. austerus. [Hes/>t'romys), Baird, Acad. Nat. Scien. Phil., 1855, 



P- 336- 



Type localily. Spokane Plain, Washington. E.xact locality not 

 named. 



Geogr. Dislr. Pacific Coast, California to Washington. 



Genl. Char. Smaller than P. americaniis, feet smaller. 



Color. Sooty brown, tinged with yellowish brown on cheeks 

 and sides; feet and under parts white: tail above blackish, beneath 

 white. 



Measurements. Total length, 151: tail vertebrae, 70; hind foot, 19. 



169. mearnsi. (Vesperiinus), Allen, Bull. Am. Mus. Nat. Hist., 1891, 



p. 300. 



Type locality. Brownsville, Texas. 



Geogr. Distr. Texas to Arizona. 



Genl. Char. Ears large, naked. Fawn spot on breast; tail less 

 than head and body. 



Color. Above dusky grayish brown tinged with fawn; flanks 

 fawn; beneath pure white. A pale fawn spot on the center of the 

 breast. Ears dusky, edged with white. Tail, dusky gray above, 

 lighter beneath. Feet grayish white. 



Measurements. Average total length, 178.6; tail vertebrae, 80; 

 ear, 13; hind foot, 20.8. 



170. canus. [Peromysciis), Mearns, Proc. U. S. Nat. Mus. Wash., 



1895, p. 445. 



Type locality. Fort Clark, Kinney County, Texas. 



Geogr. Distr. Texas and Oklahoma Territorj-. 



Genl. Char. Similar to F. mearnsi, but smaller, tail shorter. 



Color. Above drab gray, median line blackish; feet and under 

 parts pure white. Tail, blackish above, white below. 



Measurements. Total length, 175; tail vertebrae, 75; hind foot, 

 21 ; ear, 1 1.5. 



171. boyiii. {Hesperomys), Baird, Proc. Acad. Nat. Scien. Phil., 1855, 



P- 355- 

 gilherti, Allen, .\m. Mus. Nat. Hist., 1893, p. 188. 



