jc.f, PEROMYSCUS. 



178. tehuantepecus (Peromyscus), Merr., Proc. Biol. Soc. Wash., xn, 



1898, p. 122. 

 TEHUANTEPEC FIELD MOUSE. 



Type locality. Tehuantepec, State of Oaxaca, Mexico. 



Geogr. Distr. State of Oaxaca, Mexico; range undetermined. 



Gcnl. 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 vertebrae, 124; hind 

 foot, 26. 



179. oaxacensis (Peromyscus), Merr., Proc. Biol. Soc. Wash., xn, 



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 bullae 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 vertebrae, 122; hind 

 foot, 27. 



180. comptus (Peromyscus}, Merr., Proc. Biol. Soc. Wash., xn, 



1898, p. 1 20. 

 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. 



