208 PEROMYSCUS. 



ROCK MOUSE. 



Type locality. Jacaltenango, Huehuetenango, Guatemala. 



Geogr. Distr. Guatemala; range unknown. 



Gcnl. Char. Similar to P. mexicanus; paler. 



Color. Above grayish fulvous, lined with black; dorsal area dark, 

 almost black; sides fulvous; lips, wrists, hands, feet, and under parts 

 white; ankles dusky; orbital ring blackish; cheeks pale fulvous; tail 

 above dusky, beneath whitish. 



Measurements. Total length, 245.5; tail vertebrae, 127.5; hind 

 foot, 27.5. 



d. totontepecus (Pcromyscus), Merr., Proc. Biol. Soc. Wash., xn, 



1898, p. I2O. 



TOTONTEPEC FIELD MOUSE. 



Type locality. Totontepec, State of Oaxaca, Mexico. Altitude, 

 6,500 feet. 



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



Genl. Char. Similar to P. mexicanus, but larger and darker. 



Color. Above dusky brown; black on dorsal region; sides and 

 cheeks fulvous brown; under parts whitish, with sometimes a salmon 

 patch on breast; tail above dusky, yellowish white below; hands 

 whitish; ankles and basal portions of hind feet dusky. 



Measurements. Total length, 261; tail vertebrae, 136; hind 

 foot. 28. 



181a. allophylus (Peromyscus), Osgood, Proc. Biol. Soc. Wash., xvii, 



1904, p. 71. 

 ALIEN MOUSE. 



Type locality. Huehuetan, State of Chiapas, Mexico. 



Genl. Char. Tail shorter than head and body; tail scaly as in 

 Oryzomys; proximal soles of hind feet finely haired. 



Color. Dorsal area blackish brown; sides mummy brown; under 

 parts yellowish white; slate of under fur showing; orbital ring and 

 antorbital spot black; tail unicolor, dusky blackish; hands and feet 

 whitish; ankles dusky. 



Measurements. Total length, 202; tail vertebras, 95; hind foot, 

 25. Skull: greatest length, 29.8; Hensel, 22.5; zygomatic width, 

 14.5; interorbital constriction, 5; length of nasals, n; palate, 4; post- 

 palatal length, 10.5; length of upper molar series, 4. 



182. furvus (Peromyscus}, Allen & Chapman, Bull. Amer. Mus. 



Nat. Hist., 1897, p. 201. 

 JALAPA FIELD MOUSE. 



Type locality. Jalapa, State of Vera Cruz, Mexico. 



