WHITE-FOOTED MOUSE 



inches; tail vertebrae, 3-3.9 inches; hind foot, .84-.96 inch. 

 Found in "Upper Sonoran Zone and part of the Lower 

 Sonoran of western Texas and eastern New Mexico; north 

 to southeastern Colorado and south to northern Durango; 

 northeast to western Oklahoma." (Osgood) 



Arizona White-footed Mouse ; Apache Wood Mouse.^ — Pero- 

 myscus leucopus arizonce (Allen). 

 Slightly darker than tornillo, but otherwise resembling it. 

 Upperparts varying from fawn to dark fawn, sprinkled with 

 dusky; tail indistinctly bicolored, pale brownish above, 

 white below. Total length, 7,1-8.1 inches; tail vertebrae, 

 3.1-3.8 inches; hind foot, .88-96 inch. Found in "South- 

 eastern Arizona and adjacent parts of Mexico and New 

 Mexico." (Osgood) 



Texas White-footed Mouse; Texas Gray Wood Mouse. — 

 Peromyscus leucopus texanus (Woodhouse). 

 Slightly smaller and darker than tornillo, with shorter pelage 

 and more sparsely-haired tail. Upperparts varying from 

 pale to dark fawn, sprinkled with dusky. Total length, 

 6.8-7.6 inches; tail vertebrae, 2.8-3.8 inches; hind foot, .8- 

 .9 inch. Found in "Southern Texas . . . extending west 

 to the vicinity of the mouth of the Pecos River, north to 

 about latitude 33° north, east to west side of Galveston 

 Bay. . . . Lower Sonoran Zone." (Osgood) 



Gossypinus Group 



Cotton Mouse. — Peromyscus gossypinus gossypinus (Le 



Conte). 

 Tail less than half total length, rather indistinctly bicolored, 

 covered with short hairs, generally with well-defined, dark 

 dorsal band; larger and darker than leucopus. Upperparts 

 from bright cinnamon-rufous to deep russet, heavily sprink- 

 led with blackish which forms coarse lines, darkest on back 

 from shoulders to base of tail; grayer on top of head and 

 shoulders; ears brownish and either lacking the whitish 

 edging or else with white greatly reduced; feet white; fore- 

 arm dusky; tail blackish brown on upperside, white below; 

 underparts white generally strongly tinged with cream 

 color on pectoral region. Total length, 6.4-7.6 inches; tail 

 vertebrae, 2.8-3.5 inches; hind foot, .88-96 inch. Found in 

 "Lowlands of the southeastern United States from the 

 Dismal Swamp, Virginia, to northern Florida and west to 

 Louisiana. Lower Austral Zone." (Osgood) 

 Rhoads Cotton Mouse. — Peromyscus gossypinus megacephalus 



(Rhoads). 

 Larger and paler than typical gossypinus. Upperparts 

 brownish to light russet, with less black on dorsal area. 

 Total length, 7.3-8.2 inches; tail vertebrae, 3.1-3.6 inches; 

 hind foot, .92-1.04 inches. Found in " Northern Alabama 

 and western Tennessee, west through Arkansas to eastern 



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