JUMPING MOUSE 



Winter pelage duller, yellower, and with less contrast 

 between color of sides and dark dorsal band. 



Immature pelage more ochraceous than adults, and more 

 apt to show fulvous wash on underparts. 



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Fig. 96. Jumping Mouse 



Measurements. — Sexes of equal size. Total length 

 inches; tail vertebra), 5.3 inches; hind foot, 1.2 inches. 



Geographical Distribution. — Most of the United States 

 and Canada north to Arctic Circle and south into California 

 and into North Carolina. 



Food. — Vegetation, seeds, and grains. 



Enemies. — Hawks, Owls, Snakes, Weasels, Foxes, and other 

 small carnivores. 



Species and Subspecies of the Genus Zapus. 



There is rather close agreement in color patterns throughout 

 this genus ; that is, the Jumping Mice all have a (more or less 

 obvious) dark dorsal band, yellowish or ochraceous upperparts, 

 and white underparts. Also, there is no very great seasonal 

 variation, the winter pelage usually resembling that of sum- 

 mer, except for less contrast and a somewhat duller tone. 



Hudson Bay Jumping Mouse. — Zapus hudsonius hudsonius 

 (Zimmerman). 

 As described above. Found in suitable localities "from the 

 southern shores of Hudson Bay south to New Jersey, and 

 in the mountains to North Carolina, west to Iowa and 

 Missouri, and northwest to Alaska." (Preble) 



Labrador Jumping Mouse. — Zapus hudsonius ladas Bangs. 

 Large and darker than typical hudsonius. Upperparts 



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