FIELD BOOK OF MAMMALS 



Found on "Mount Shasta and southward in the Sierra 

 Nevada to Mammoth and North Fork of Kern River, 

 CaHfornia." (Preble) 



Humboldt Jiunping Mouse. — Zapiis trinotatus eureka A. B. 

 Howell. 

 Resembling typical trinotatus but with less conspicuous 

 dorsal band. Upperparts (fall) tawny olive, with little 

 difference between dorsal area and sides; tail sharply bi- 

 color; underparts white, washed with tawny olive. Total 

 length, 9.2 inches; tail vertebras, 5.6 inches; hind feet, 1.32 

 inches. Found in " Northwestern coast region of Cali- 

 fornia, from Mendocino City, Mendocino County, north 

 at least through Humboldt County." (Howell) 



Yellow Jumping Mouse. — Zapiis luteus luteus Miller. 



Resembling alleni but brighter and more ochraceous. 

 Upperparts ochraceous buff; dorsal band not well defined. 

 Total length, 9 inches; tail vertebrse, 5.5 inches; hind foot, 

 1.28 inches. Found in New Mexico, in Otero, Santa Fe, 

 and Taos Counties. 



Southern Jumping Mouse. — Zapus luteus australis Bailey. 

 Small and slender; colors pale. "Upperparts pale buffy 

 yellowish sparingly lined with black hairs; back slightly 

 darker but with poorly defined dorsal area ; lower-parts pure 

 white; heels dusky; feet white." (Bailey) Total length, 

 8.2 inches; tail vertebrse, 5 inches; hind foot, 1.2 inches. 

 Found in Socorro County, New Mexico. 



Mountain Jumping Mouse. — Zapus montanus (Merriam). 

 "Smaller and duller in color than Z. trinotatus." (Preble) 

 Sides dark ochraceous buff, sprinkled heavily with black; 

 well-defined dorsal area of mixed dusky and yellowish; 

 tail sharply bicolor, dark gray and whitish; outer side of 

 hind legs dusky; feet dirty white; underparts white. Total 

 length, 9.1 inches; tail vertebrae, 5.4 inches; hind foot, 1.24 

 inches. Found in " Cascade Range in Oregon." (Preble) 



Coast Jumping Mouse. — Zapus orarius Preble. 



Dorsal area not sharply differentiated in color of sides. 

 Upperparts dark ochraceous, sprinkled with black; dorsal 

 area not well defined and with much the same tone as sides; 

 ochraceous on hind legs; feet yellowish white; tail above, 

 yellowish white, below, grayish; underparts white, heavily 

 washed with ochraceous, color deepest on sides of throat. 

 Total length, 8.8 inches; tail vertebrae, 5.1 inches: hind foot, 

 1.24 inches. Found on "Coast of California from Point 

 Reyes north to Mad River, Humboldt County; limits of 

 range unknown." (Preble) 



Pacific Jumping Mouse. — Zapus pacificus Merriam. 



Dorsal area not well differentiated. Sides buffy yellow, 

 sprinkled with black; dorsal area mixed yellowish and black, 

 the former predominating; tail sharply bicolor, grayish on 

 upper, white on lower side. Total length, 9 inches; tail 

 vertebrse, 5.6 inches; hind foot, 1.24 inches. Found in 



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