PEROMYSCUS. 133 



Type locality. American River, Eldorado County, California. 



Geogr. Distr. Central and eastern California. 



Gt-nl. Char. Body stout; ears very large; tail longer than the 

 bod}'. 



Color. Above mixed glossy brown and pale yellowish brown; 

 feet and lower parts white; white on sides bordered by a line of red- 

 dish buff, which grades into the color of the upper parts. Tail, above 

 dusky, beneath white. 



Measurements. Total length, 22S; tail vertebra-, 97; hind foot, 22. 



a . penicillatu?. (Ferotnyscus), Mearns, Proc. U. S. Nat. Mus. 

 Wash., 1896, p. 139. 



Ty/e locality. Franklin Mountains, near El Paso, Texas. 



Geogr. Distr. Northwestern Texas. 



Ge»l. Char. Nasal bones of skull truncate posteriorly, and end- 

 ing in front of the posterior ends of premaxillaries. 



Color. Above drab gray tinged with ochraceous buff on rump 

 and sides. Feet and under parts pure white. Tail, dusky drab 

 above, white below. 



Measiirements. Total length, 202; tail vertebr;r, 115; hind foot, 

 22; ear, 14. 



172. keeni. (Sitoi/iys), Rhoads, Proc. .\cad. Scicn. Phil., 1S94, p. 



258. 



TY/ie locality. Queen Charlotte Island, British Columbia. 



Geogr. Distr. Type locality only, so far as known. 



Genl Char. Size larger than J', aiistcnis; ears smaller; tail 

 more than head and body in length. Skull: brain case inflated above 

 plane of orbits. 



Color. Above uniform grizzled blackish brown; feet and lower 

 parts ashy white; orbital ring and ears, sooty black. Tail, above 

 sooty black; below whitish. 



Measurements. Total length, 170; tail vertebra', HS; hind foot, 

 24; ear, 10.5. 



173. macrorhinus. {Sitomys), Rhoads, Proc. Acad. Nat. Scien. Phil., 



1894, p. 259. 



Type locality. Skeena River, British Columbia. 



Geogr. Distr. British Columbia, south, possibly into northern 

 Washington. 



Genl. Char. Tail longer than head and body; feet large; ears 

 medium; rostrum relatively very long, longer than post-orbital region, 

 /. e., from greatest constriction to frontals. 



Color. Resembles P. keeni, but grayer and lighter above. Tail 

 more coarsely haired, and with a pencil. 



