PEROMYSCUS. 205 
176b. simulatus (Peromyscus), Osgood, Proc. Biol. Soc. Wash. 
XVII, 1904, p. 72. 
ImiITATOR MOUSE. 
Type locality. Jico, State of Vera Cruz, Mexico. 
Genl. Char. Miniature of P. lophurus; tail long, hairy, crested; 
audital bulle relatively large. 
Color. Like P. lophurus; tail brown, narrow line of white on under 
surface. 
Measurements. Total length, 169; tail vertebre, 87; hind foot, 
21; ear from notch, 14.3. Skull: greatest length, 24.4; Hensel, 18; 
zygomatic width, 12.5; interorbital constriction, 4.3; interparietal 
8.2X3; length of nasals, 9; palate, 3.5; postpalatal length, 8; length 
of upper molar series, 8.9. 
177. felipensis (Peromyscus), Merr., Proc. Biol. Soc. Wash., xu, 
1898, p. 122. 
SAN FELIPE FieLtp Mouse. 
Type locality. Cerro San Felipe, State of Oaxaca, Mexico. Alti- 
tude, 10,200 feet. 
Geogr. Distr. State of Oaxaca, Mexico; range unknown. 
Genl. Char. Similar to P. difficilis, but larger and darker. 
Color. Above dusky gray, blackish on dorsal region; lips, sides 
of nose, under parts, hands, and feet white; flanks grayish brown; 
spot on breast salmon; orbital ring black; tail above brown, beneath 
whitish. 
Measurements. Total length, 238; tail vertebrae, 125; hind 
foot, 27.5. 
177a. amplus (Peromyscus), Osgood, Proc. Biol. Soc. Wash., xvu, 
1904, p. 62. 
CuuBBy Mouse. 
Type locality. Coixtlahuaca, State of Oaxaca, Mexico. 
Genl. Char. Similar to P. felepensis, but paler. 
Color. Upper parts clay color, being a mixture of ochraceous 
buff and dusky; lateral line ochraceous buff; forehead and orbital 
region grayish; under parts creamy white; pectoral spot ochraceous 
buff; tail above dusky brownish, beneath white; hands and feet 
white; ankles dusky. 
Measurements. Average of ten adults: total length, 248 (235- 
260); tail vertebre, 136 (128-145); hind foot, 27 (26-28). Skull of 
type: zygomatic width, 10.4; interorbital constriction, 4.5; interpa- 
rietal, 10.4X3.7; length of nasals, 11.3; palate, 4.6; postpalatal 
length, 10.2; upper molar series, 4.8. 
