13-t PEROMYSCUS. 



Measurements. Total length, 210; tail vertebrae, 112; hind foot, 

 20: ear, 15. 



174. sitkensis. {Peromysciis), Merr., Proc. Biol. Soc, Wash., 1897, 



p. 223.. 

 Type locality. Sitka, Alaska. 

 Geogr. Distr. Baranof Island, Alaska. 

 Genl. Char. Size large; tail long; ears small; colors dark. 

 Color. Above brown, russet on rump; orbital ring dusky; feet 

 and under parts white. Tail blackish above, white below. 



Measurements. Total length, 222; tail vertebra, 112; hind foot, 26. 



175. oreas. {Pennnysais), Bangs, Biol. Soc. Wash., 1S9S, p. 84. 

 Type laeality. Mt. Baker Range, British Columbia. 



Geogr. Distr. Higher mountains of northern Washington and 

 southern British Columbia. 



Genl. Char. Size medium: tail long; skull with brain case broad 

 and flat, and rostrum long and slender. 



Color. Above varying from Prout's brown to russet, median line 

 darkest; orbital ring black; feet and under parts white. Tail black 

 above, white below; pencil long. 



Measurements. Total length, 200; tail vertebra;, loi ; hind foot, 24. 



176. auripectus. (Sitomys), Allen, Bull. Am. Mus. Nat. Hist., 1893, 



P- 75- 



Type locality. Bluff City, Southeastern Utah. 



Geogr. Distr. Utah, Arizona and New Mexico. 



Genl. Char. Size of P. sonoriensis, ears larger; tail longer, 

 thickly clothed with hairs; general color paler. Cheek pouches rather 

 large. 



Color. Above pale yellowish brown, varied with blackish on 

 median line; flanks golden brown; under parts white. Tail pale 

 brown above, white beneath with a 3'ellowish brown pectoral spot. 

 Ears pale brown, edged with white. Indistinct orbital ring. 



Measurements. Total length, 172; tail vertebrae, 93; hind foot, 

 22; ear, 16. 



177. rowleyi. {Sitomys), Allen, Bull. .Vm. IMus. Nat. Hist., 1893, 



P- 77- 



Type locality. Nolan's Ranch, Utah. 



Geogr. Distr. Utah to Arizona. 



Genl. Char. Similar to P. auripectus. but larger. No pectoral 

 spot; soles naked. 



Color. Above pale grayish cinnamon brown, varied with black, 

 and passing into yellowish cinnamon on flanks; beneath white. Tail 

 pale brown above, whitish below. Ears large, naked. 



