FIELD BOOK OF MAMMALS 



bright ochraceous buff, darkened by black-tipped hairs, 

 dark dorsal band sprinkled with ochraceous; tail dusky- 

 above, white below, bicolor. Total length, 9.1 inches; tail 

 vertebrae, 5.7 inches; hind foot, 1.3 inches. Found in 

 "Eastern Quebec north to Hamilton Inlet, Labrador; limits 

 of range unknown." (Preble) 

 Alaska Jumping Mouse.^ — Zapus hudsonius alascensis Mer- 

 riam. 

 Resembling typical hudsonius but larger and darker. 

 Upperparts dull dark ochraceous; dorsal band quite dis- 

 tinct, sprinkled with brownish; tail bicolor. Total length, 



8.7 inches; tail vertebrae, 5.3 inches; hind foot, 1.26 inches. 

 Found from "Yakutat Bay, north to Yukon River; limits 

 of range unknown." (Preble) 



Carolinian Jumping Mouse. — Zapus hudso?iius americanus 

 (Barton). 

 Smaller than typical hudsonius and dorsal band less dis- 

 tinct. Upperparts deep, dull ochraceous; dorsal band with 

 only light admixture of black; ears dark, almost black; 

 white underparts tinged with ochraceous. Total length, 



7.8 inches; tail vertebrae, 4.6 inches; hind foot, 1.12 inches. 

 Found "From vicinity of Raleigh, N. C, north through 

 Upper Austral Zone along coastal plain to southern Connec- 

 ticut and lower Hudson Valley, intergrading in upper edge 

 of its range with Z. hudsonius.'' (Preble) 



Prairie Jumping Mouse. — Zapus hudsonius campestris Preble. 

 Larger and brighter colored than typical hudsonius. Upper- 

 parts bright ochraceous buff, sprinkled with black; dorsal 

 area well developed; tail above, dark grayish, below, yellow- 

 ish white. Dorsal band and ears much darker in fall than 

 in summer. Total length, 8.9 inches; tail vertebra, 5.4 

 inches; hind foot, 1.2 inches. Found in "Great Plains 

 from Manitoba southward to Nebraska and westward to 

 Colorado and Wyoming." (Preble) Plate XXXI. 



Kamloops Jumping Mouse. — Zapus tenelliis Merriam. 



Darker than typical hudsonius; larger in size; ears large. 

 Upperparts (early fall pelage) olive-yellowish, thickly 

 sprinkled with black; dorsal band not very well defined; 

 tail sharply bicolor; dusky on nose, ears, and outer sides of 

 legs. Total length, 8.3 inches; tail vertebrae, 5.1 inches; 

 hind foot, i .22 inches. Found only in vicinity of Kamloops, 

 British Columbia. 



Rocky Mountain Jumping Mouse. — Zapus princeps princeps 

 Allen. 

 Larger than hudsonius. Upperparts yellowish brown, 

 lightly sprinkled with blackish; dorsal band mixed pale 

 yellowish brown and black; a clear yellowish brown la- 

 teral line separating white of underparts and darker color 

 of sides; tail indistinctly bicolor, paler brown above, grayish 

 white below; ears edged with yellowish white; underparts 

 white, sometimes strongly tinged with ochraceous. Fall 



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