WHITE-FOOTED MOUSE 



entirely concealing undercolor; ears dusky; tail bicolor, 

 brownish dusky above, white below-." (Osgood) Total 

 length, 6.7 inches; tail vertebrae, 2.8 inches; hind foot, .85 

 inch. Found only on Anastasia Island, Florida, and Cum- 

 berland Island, Georgia. 



Boylii Group 



Boyle Deer Mouse; Boyle White-footed Mouse; California 

 Brush Mouse. — Peromyscus boylii boylii (Baird). 

 Tail as long or longer than length of head and body; ears 

 of medium size; underside of hind foot hairy for proximal 



Fig. 76. Distribution of the subspecies of Peromyscus boylii, 

 north of Mexico, after Osgood 



I. Peromyscus boylii boylii 



2 and 4 Peromyscus boylii rowleyi 



3. Peromyscus boylii attwateri 



two-fifths of its length. Upperparts brownish to sepia 

 russet or pale cinnamon, uniformly sprinkled with dusky, 

 no definite dark doisal band; pale ochraceous buff on lower 

 side of face, arms, and a narrow line along sides; a narrow 

 black ring about eye; no white hairs in tufts at base of ears, 

 which are dusky, with narrow white edging; feet white, 

 "ankles" duslcy; tail brownish above, w^hite below, with 

 small "pencil" of long hairs; underparts creamy white. 

 Total length, 7.3-8.1 inches; tail vertebrse, 3.7-4.5 inches; 

 hind foot, .84-92 inch; ear from notch (in dry skin) .61-70 

 inch. Found on "West slopes of the Sierra Nevada moun- 

 tains from the vicinity of Yosemite north to Mount Shasta, 

 thence along the east slopes of the coast ranges nearly to 

 San Francisco Bay. Upper vSonoran and Transition Zones. " 

 (Osgood) 



363 



