208 PEROMYSCUS. 
Rock Mouse. 
Type locality. Jacaltenango, Huehuetenango, Guatemala. 
Geogr. Distr. Guatemala; range unknown. 
Genl. 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 vertebre, 127.5; hind 
£O0b, 27.5, 
d.—totontepecws (Peromyscus), Merr., Proc. Biol. Soc. Wash., x11, 
1898, p. 120. 
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 vertebre, 136; hind 
foot, 28. 
18la. 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 vertebre, 95; hind foot, 
25. Skull: greatest length, 29.8; Hensel, 22.5; zygomatic width, 
14.5; interorbital constriction, 5; length of nasals, 11; palate, 4; post- 
palatal length, 10.5; length of upper molar series, 4. 
182. furvus (Peromyscus), Allen & Chapman, Bull. Amer. Mus. 
Nat, Hist., 2897, 8. 261. 
JaLvapA Fretp MOovusE. 
Type locality. Jalapa, State of Vera Cruz, Mexico. 
