WHITE-FOOTED MOUSE 



Polionotus Group 



The members of this group are all small and found only in 

 Florida, Georgia, and Alabama. 



Old-field Mouse.^ — Peromyscus polionotus polionotus (Wagner). 

 Smallest Peromyscus found in the Atlantic States; resem- 

 bling bairdi, but even smaller. Upperparts brownish 

 fawn, finely sprinkled with dusky, only slightly darker along 

 dorsal area and nearly uniform in intensity over entire 

 upperparts; brighter fawn about face and oribital region; 

 orbital ring and ears dusky; tufts at bases of ears whitish 

 mixed with fawn; underparts creamy white, the hairs slate- 

 colored at base except on chin and throat, where they are 

 white from tip to base; tail dusky brown above, white 

 below, sharply differentiated. Total length, 5-5.5 inches; 

 tail vertebrae, i. 6-2.1 inches; hind foot, .62-.71 inch. Found 

 in "Open fields of the interior of northern Florida and 

 southern Georgia." (Osgood) 



Beach Mouse. — Peromyscus polionotus niveiventris (Chapman). 

 Slightly larger than typical polionotus and color paler. 

 Upperparts pale ochraceous buff, finely sprinkled with 

 brownish dusky; paler over shoulders and nape, brighter on 

 head and back; underparts everywhere clear creamy white 

 from tips to roots of hair, except along lateral line where the 

 hairs are slate-colored at base; tail pale brownish buff above, 

 buffy white below and without sharp line of demarcation 

 between upper and lower sides. Total length, 5.1-6. i 

 inches; tail vertebrcE, 2-2.4 inches; hind foot, .68-.76 inch. 

 Found along "Sandy beach region of the eastern coast of 

 Florida." (Osgood) 



Anastasia Island White-footed Mouse. — Peromyscus polio- 

 notus phasma (Bangs). 

 Like niveiventris, but paler and with more white markings. 

 Upperparts pinkish buff tinged with gray along mid-dorsal 

 region; conspicuous white areas or spots on nose, above 

 eye, and at base of ear; feet and legs white; tail unicolor, 

 white, with faint traces of a dusky median band along upper- 

 side; underparts clear white to roots of hair. An extremely 

 pale form throughout. Total length, 5.5 inches; tail verte- 

 brae, 2.1 inches; hind foot, .75 inch. Found only on 

 Anastasia Island, Florida. 



Rhoads White-footed Mouse. — Peromyscus polionotus rhoadsi 

 (Bangs). 

 Smaller and darker than niveiventris. Upperparts ochrace- 

 ous buff, shading toward dark ochraceous buff, lightly 

 mixed with dusky; tail unicolor, white, for terminal half, 

 brownish buffy above, white below for basal half; under- 

 parts creamy white, slate color at base of pelage showing 

 only as a trace; thighs yellowish on inner side. Total 

 length, 5 inches; tail vertebras, 1.8 inches; hind foot, .66 



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