206 PEROMYSCUS. 
178. tehuantepecus (Peromyscus), Merr., Proc. Biol. Soc. Wash., x, 
1898, p. 122. 
TEHUANTEPEC FIELD Mouse. 
Type locality. Tehuantepec, State of Oaxaca, Mexico. 
Geogr. Distr. State of Oaxaca, Mexico; range undetermined. 
Genl. Char. Size medium; similar to P. mexicanus, but paler. 
Color. Above pale fulvous lined with black, darkest on back; 
cheeks and sides buffy fulvous; under parts whitish, with a salmon 
pectoral spot, and sometimes tinged with buff; tail dusky, sides 
orange chrome; hands and feet whitish. 
Measurements. Total length, 243; tail vertebre, 124; hind 
foot, 26. 
179. oaxacensis (Peromyscus), Merr., Proc. Biol. Soc. Wash., xu, 
1898, p. 122. 
Oaxaca FIELD MOUSE. 
Type locality. Cerro San Felipe, State of Oaxaca, Mexico. Alti- 
tude, 10,000 feet. 
Geogr. Distr. State of Oaxaca, Mexico; limits of range unknown. 
Genl, Char. Size medium; tail long. Skull similar to that of 
P. mexicanus, but bulla larger, and first lower molar with a “‘supple- 
mentary enamel loop on outer side in front of posterior cusp.”’ 
Color. Upper parts fulvous, darkest on dorsal region; orbital 
ring dusky; cheeks and sides cinnamon rufous; under parts and 
hands white; feet white, their basal portion dusky; tail above dusky, 
beneath white. 
Measurements. Total length, 242; tail vertebra, 122; hind 
faot, 27. 
180. comptus (Peromyscus), Merr., Proc. Biol. Soc. Wash., x1, 
rS598,.p.. 120. 
CHILPANCINGO Mouse. 
Type locality. Mountains near Chilpancingo, State of Guerero, 
Mexico. 
Geogr. Distr. State of Guerero, Mexico; range unknown. 
Genl. Char. Size large; similar to P. auritus, but more fulvous; 
tail long. 
Color. Upper parts golden fulvous lined with black, dorsal 
region darkest; orbital ring blackish; under parts white, some speci- 
mens tinged with yellowish; wrists and ankles dusky; tail dusky 
above, whitish beneath; hands and feet whitish. 
Measurements. Total length, 285; tail vertebrae, 150; hind 
foot, 31. 
