PEROMYSCUS. 209 



Geogr. Distr. State of Vera Cruz, Mexico. 



Genl. Char. Skull large, strong; .rostrum broad, inflated ante- 

 riorly, bell-shaped; nasals pointed posteriorly and extending beyond 

 the intermaxillae ; palate with slightly upturned posterior border; 

 anterior palatine foramina very broad. 



Color. Above dark brown, washed with grayish, blackish on 

 dorsal line; inclined to reddish on sides; under parts and hind feet 

 grayish white; fore feet white; rufous patch on breast; ears and tail 

 dark brown, naked; tip of tail sometimes whitish. 



Measurements. Total length, 248-282; tail vertebrae, 123-145: 

 hind foot, 26-29; ear, 20-23. Skull: total length, 35; basal length, 

 29; zygomatic width, 16.7; interorbital constriction, 5; length of 

 nasals, 8; length of upper tooth row, 5. (ex Type.) 



183. zarhynchus (Peromyscus), Merr., Proc. Biol. Soc. Wash., xn, 



1898, p. 117. 

 LONG-NOSED MOUSE. 



Type locality. Tumbala, State of Chiapas, Mexico. 



Geogr. Distr. State of Chiapas, Mexico; limit of range unknown. 



Genl. Char. Size large; ears large; tail long, naked; hind feet 

 long. Skull: rostrum elongated, bullae small; interparietal narrow. 



Color. Above dusky with a chestnut tinge; flanks seal brown or 

 chestnut; under parts buff, with a chestnut tinge on breast, extend- 

 ing in some specimens over the belly; tail above dusky, beneath 

 yellowish white; hands and feet whitish. 



Measurements. Total length, 324; tail vertebrae, 176; hind foot, 

 35- 



a. cristobalensis (Peromyscus) , Merr., Proc. Biol. Soc. Wash., 



xn, 1898, p. 117. 

 SAN CRISTOBAL FIELD MOUSE. 



Type locality. San Cristobal, State of Chiapas, Mexico. 



Geogr. Distr. State of Chiapas, Mexico; range unknown. 



Genl. Char. Similar to P. zarhynchus, but lighter and more 

 rufous. 



Color. Above dusky brown and fulvous mixed, darkest on dorsal 

 line; cheeks and sides fulvous; under parts whitish, with chest tinged 

 with chestnut; tail dusky above, yellowish white beneath; hands 

 and feet whitish. 



Measurements. Total length, 322; tail vertebras, 170; hind foot, 

 34- 



184. auritus (Peromyscus} , Merr., Proc. Biol. Soc. Wash., xn, 1898, 



p. 119. 



