PEROMYSCUS. 187 
Geogr. Distr. State of Chihuahua, north to White, Chiricahua 
and Graham Mountains of Arizona. 
Genl. Char. Similar to P. gambeli, but smaller; longer ears and 
shorter tail. 
Color. Above dark plumbeous slate; below whitish; tail bicolor. 
Measurements. Total length, 158; tail vertebre, 67; hind foot, 
24. Skull: occipito-nasal length, 24; Hensel, 10; zygomatic width, 
12; interorbital constriction, 4; length of nasals, 10; palatal length, 
10; length of upper molar series, 3. 
b.—flaecidus (Peromyscus), Allen, Bull. Am. Mus. Nat. Hist., 1903, 
P- 599. 
FEEBLE MOUSE. 
Type locality. Rio Sestin, State of Durango, Mexico. Altitude, 
7,500 tect. 
Genl. Char. Similar to P. t. arizone, but paler; tail longer; hind 
foot shorter. 
Color. Upper parts dark fawn brown, blackish on median area; 
lateral line fulvous; head grayer than body; under parts pure white, 
under fur plumbeous; fore legs white to shoulder; body color extend- 
ing on hind leg to tarsal joint; tail above dark brown on upper third, 
rest grayish white, beneath paler; ear gray brown margined nar- 
rowly with white. 
Measurements. Total length, 177; tail vertebrae, 79; hind foot, 
20; ear from crown, 14; from notch, 18. 
c.—clementis (Peromyscus), Mearns, Proc. U. S. Nat. Mus., 1896, 
peadae, Hiliot, Syn: N. Am. Mamm., roor, -p: r3o. 
SAN CLEMENTE IsLAND Mouse. 
Type locahty. San Clemente Island, California. 
Geogr. Distr. Coronodos Islands, Mexico, and San Clemente 
Island, California. 
Genl. Char. Much blacker than P. thurbert, and of a more red- 
dish coloration, save on the head. 
Color. Top of head drab gray; upper parts drab, tinged with 
burnt umber; ears black; feet and under surface white; tail bicolor. 
Measurements. Total length, 177; tail vertebre, 77; hind foot, 
eu, ear, 17. 
d.—coolid sii (Peromyscus), Thomas, Ann. Mag. Nat. Hist., 7th 
mer., 1, 1888; p. 45. 
CooxipGe’s Firtp Mouse. 
Type locality. Santa Anita, Cape Region, Lower California, Mexico. 
Geogr. Distr. Cape Region, Lower California. 
