b.—montanus. (Zapiis), Merr., Proc. Biol. Soc. Wash., 1897, 

 p. 104. 



Type locality. Crater Lake, Mount Mazama, Oregon. 



Geogr. Distr. Cascade Range in Oregon. 



Genl. Char. Smaller than Z. trinotatiis, colors duller, skull 

 smaller. 



Color. Suiiiiinr Pelage. Dorsal area grizzled dusky and yellow; 

 sides ochraceous buff lined with black; outsides of legs dusky to 

 heels; beneath white. Tail, above dark gray, beneath whitish; feet 

 soiled whitish. 



Measurements. Total length, 228; tail vertebra, 135; hind 

 foot, 31. 



400. orarius. (Zapus), Preble, N. Am. Faun., No. 15, 1899, p. 29. 

 Type locality. Point Reyes, California. 



Geogr. Distr. Coast of California, Point Reyes north to Mad 

 River, Humboldt Bay. 



Genl. Char. Size medium, lower parts suffused with color of 

 sides. 



Color. Above dark ochraceous lined with black, sides similarly 

 colored; legs ochraceous; feet yellowish white; beneath strongly 

 suffused with ochraceous. Tail, above grayish, beneath yellowish 

 white. 



Measurements. Total length, 220; tail vertebra;, 127; hind 

 foot, 30. 



401. pacificus. {Zapus), Merr., Proc. Biol. Soc. Wash., 1897, p. 104. 

 Type locality. Prospect, Rogue River Valley, Oregon. 



Geogr. Distr. Southeastern Oregon and northwestern Cali- 

 fornia. 



Genl. Char. Large, tail one-half longer than head and body. 



Color. Albinistic? " Dorsal area not sharply defined, but so 

 strongly suffused with yellowish that the yellow predominates over 

 the black; sides buffy yellow moderately lined with black hairs; inner 

 sides of legs only slightly darkened, tail sharply bicolor; grayish 

 above, white beneath; fore and hind feet soiled white." (Mer- 

 riam, 1. c.) 



Measurements. Total length, 225; tail vertebrae, 141; hind foot, 

 31. Skull: basilar length, 17.5; zygomatic breadth, 12; mastoid 

 breadth, 10; interorbital constriction, 4.5. 



402. saltator. {Zapus), Allen, Bull. Am. Mus. Nat. Hist., 1899, p. 3. 

 Type locality. Telegraph Creek, Northwest Territory, Canada. 

 Geogr. Distr. Telegraph Creek south to mouth of Skeena River 



and Tsimshian Peninsula; limits of range unknown. 



