FIELD BOOK OF MAMMALS 



inch. Found in "West central Florida, in the vicinity of 

 Tampa Bay." (Osgood) 



White-fronted Beach Mouse. — Peromyscus polio7iotus alhi- 

 frons Osgood. 

 Like rhoadsi, but with more extensive white markings. 

 Upperparts ochraceous buff to grayish fawn; a white area 

 on end of nose and along median line to between eyes ; white 

 edging of ear broad and a few w^hite hairs at base of ear; 

 tail white above and below except for pale brownish upper- 

 side for basal third or fourth of its length ; underparts white 

 to roots or with only traces of slate-colored bases, white of 

 underparts extending up over throat to eyes; thighs, legs, 

 and feet white. Total length, 4.8-5.5 inches; tail vertebrae, 

 1.8-2. 1 inches; hind foot, .68-76 inch. Found along 

 ' ' Coast of western Florida and Alabama. ' ' (Osgood) 



White-headed Beach Mouse. — Peromyscus leucocephalus 

 Howell. 

 Resembling phasma "but color tone of upperparts drab in- 

 stead of buff; colored dorsal area narrower, the whole of the 

 sides white; entire head and face, except crown, white; 

 paler, more extensively white, and slightly larger than . . . 

 albifrons . . . underparts, and limbs white (the hairs white 

 to base) ; ears whitish at base, becoming mouse gray at 

 tips; tail unicolor, white, with a faint tinge of drab." 

 (Howell) Total length, 5.5 inches; tail vertebrce, 2 inches; 

 hind foot, .74 inch. Found only on Santa Rosa Island, 

 Santa Rosa County, Florida. 



Leucopus Group 



White-footed Mouse. — Peromysctis leucopus leucopus (Rafi- 

 nesque). 

 Tail less than half total length ; hind foot hairy for proximal 

 two-fifths. Upperparts Mars brown sprinkled with dusky, 

 dorsal region only slightly darker than rest of upperparts; 

 ears dusky and without white tufts at bases; no well-de- 

 fined orbital ring; feet white; dusky on upperside of fore- 

 arm, brownish on "ankles"; underparts white, with slate- 

 colored base of pelage showing through somewhat; tail 

 above, dusky brownish, below, white. Total length, 6.2-7.1 

 inches; tail vertebras, 2.9-3.2 inches; hind foot, .S-.Szj. inch. 

 Found in ' ' Western Kentucky south to southern Louisiana, 

 west to Indian Territory, and east around the southern end 

 of the Allegheny Mountains to eastern Virginia. Lower 

 Austral Zone." (Osgood) 



Northern White-footed Mouse. — Peromyscus leucopus nove- 

 horacensis (Fischer), 

 Paler and somewhat larger than typical leucopus, with 

 longer and softer pelage and more hairy tail. Upperparts 

 fawn to cinnamon-rufous or bright tawny with light sprink- 

 ling of dusky, heaviest on dorsal region, less on sides; under- 



358 



