PEROMYSCUS. 157 



JUQUILA MOUSE. 



Type locality. Juquila, State of Oaxaca, Mexico. 

 Geogr. Distr. Known only from the type locality. 



b. Peromysc-ii'S spicMe&us siniulus Osgood. 



Peromyscus spicilegus simulus Osgood, Proc. Biol. Soc. Wash., 

 xvn, 1904, p. 64. Elliot, Mamm. Middle Amer. & W. Indies, 

 F. C. M. Pub., iv, Pt. i, 1904, p. 180. Zool. Ser. 

 MIMIC MOUSE. 



Type locality. San Bias, Territorio de Tepic, Mexico. 

 Geogr. Distr. Lowlands of Territorio de Tepic, Mexico. Range 

 unknown. 



322. Peromyscus megalotis (Merriam). 



Hesperomys megalotis Merr., N. Am. Faun., No. 3, 1890, p. 64. 



Peromyscus megalotis Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 



n, 1901, p. 139. Zool. Ser. 

 BIG-EARED MOUSE. 



Type locality. Black Tank, Desert of the Little Colorado, Coco- 

 nino County, Arizona. 



Geogr. Distr. Desert of the Little Colorado, Arizona. 



323. Peromyscus montipinoris Elliot. 



Peromyscus montipinoris Elliot, Pub. Field Columb. Mus., in, 



1904, p. 264. Zool. Ser. 

 MOUNT PINOS MOUSE. 



Type locality. Mount Pinos, Lockwood Valley, Ventura County, 

 California. 



Geogr. Distr. Known only from the type locality. 



Genl. Char. Size medium; tail very long, hairy, penicillate; ears 

 large; hind foot long; color pale; skull similar to that of P. truii, but 

 with longer nasals, broader and longer braincase, and narrower inter- 

 orbital region. 



Color. Top of head and back mixed cinereous and buff, darker 

 than rest of upper parts; upper sides buffy ; entire under parts, hands, 

 and feet white; ankles dusky; tail above black, beneath yellowish 

 white; ears dark brown. 



Measurements. Total length, 214; tail vertebrae, 118; hind foot, 

 24.5; ear, 24.5. Skull: occipito-nasal length, 28; Hensel, 22; inter- 

 orbital constriction, 4.5; zygomatic width, 13; width of braincase, 

 13; length of nasals, 10; palatal length, u; length of upper tooth 

 row, 4; length of mandible, 12; length of lower tooth row, 4. 



324. Peromyscus lasius Elliot. 



Peromyscus lasius Elliot, Pub. Field Columb. Mus., in, 1904, 

 p. 265. Zool. Ser. 



