PEROMYSCUS. 185 
Geogr. Distr. Southern and Lower California, Mexico. 
Genl. Char. Medium; tail longer than head and body, thinly 
haired; soles naked; ears large. 
Color. Above yellowish wood brown mixed with black, darkest 
on median line; flanks fulvous with distinct lateral stripe; feet white; 
under parts yellowish white with fulvous pectoral spot; tail above 
brownish, paler beneath. 
Measurements. Total length, 185; tail vertebre, 113; hind foot, 
20; ear, 18. Skull: occipito-nasal length, 25; Hensel, 18.5; zygo- 
matic breadth, 12; interorbital constriction, 4; length of nasals, 9; 
palatal length, 9; width of braincase, 11.5. 
144. propinquus. 
eremicus propinquus (Peromyscus), Allen, Bull. Amer. Mus. Nat. 
Misty, 1808, p. 154. 
ALLIED DESERT MOUSE. 
Type locality. San Pablo Point, San Pablo Bay, Lower California, 
Mexico. 
Geogr. Distr. Lower California, Mexico. 
Genl. Char. Similar to P. fraterculus, but blacker. 
Color. Above mixed blackish brown and grayish fulvous; lateral 
line deep fulvous; under parts white; hands and feet white; tail 
brownish above, paler beneath. 
Measurements. Total length, 190; tail vertebre, 100; hind 
foot, 18.5. 
145. cedrosensis (Peromyscus), Allen, Bull. Amer. Mus. Nat. Hist., 
1898, p. 154. 
Cerros Istanp Mouse. 
Type locality. Cerros or Cedros Island, Lower California, Mexico. 
Geogr. Distr. Lower California, Mexico. 
Genl. Char. Similar to P. fraterculus, but darker. 
Color. Upper parts brown, tinged with fulvous and blackish; 
lateral line broad, ochraceous; under parts white with pectoral ful- 
vous line, sometimes reaching the abdomen; hands and feet white; 
ears large, pale brown; tail pale brown above, lighter beneath. 
Measurements. Total length, 194; tail vertebra, 107; hind foot, 
20. Skull: total length, 26; basal length, 21; zygomatic width, 10; 
mastoid width, 10.5; interorbital constriction, 3.5; length of nasals, 
D.6. (ex Type.) 
146. anthonyi (Hesperomys), Merr., Proc. Biol. Soc. Wash., Iv, 1887, p. 5. 
ANTHONY’s FieLtp Mouse. 
Type locality. Camp Apache, Grant County, New Mexico. 
