266 RHITHRODONTOMYS. 



Measurements. Total length, 194; tail vertebrae, 108; hind 

 foot, 21. 



a. toluccp (Reithrodontomys!}, Merr., Proc. Wash. Acad. Scien., 

 1901, p. 549. 



VOLCAN TOLUCA HARVEST MOUSE. 



Type locality. North slope of the Volcan Toluca, State of Mexico, 

 Mexico. Altitude, 11,500 feet. 



Genl. Char. Similar to R. chrysopsis, but darker; skull smaller. 



Color. Above yellowish brown and black, forming a perceptible 

 dorsal band, sides lighter; under parts grayish plumbeous; hands 

 and feet brownish; tail above dark brown, beneath whitish; ears 

 blackish brown. 



Measurements. Total length, 180; tail vertebras, 98; hind foot, 21. 



258. perotensis (Reithrodontomys!}, Merr., Proc. Wash. Acad. Scien., 



in, 1901, p. 550. 

 COFRE DE PEROTE HARVEST MOUSE. 



Type locality. Cofre de Perote, State of Vera Cruz, Mexico. Alti- 

 tude, 9,500 feet. 



Genl. Char. Similar to R. chrysopsis, but colors duller; ears 

 large; skull smaller; nasals equal to premaxillae. 



Color. Above yellowish fulvous, lined with black, forming a 

 dorsal band and grading to fulvous on rump ; top of head blackish ; 

 under parts buffy salmon; tail dark brown above, paler beneath; 

 hands and feet white ; wrists and ankles brownish ; ears dark brown. 



Measurements. Total length, 176; tail vertebrae, 102 ; hind foot, 19. 



259. orizabae (Reithrodontomys!}, Merr., Proc. Wash. Acad. Scien., 



in, 1901, p. 550. 

 ORIZABA HARVEST MOUSE. 



Type locality. Mount Orizaba, State of Puebla, Mexico. Alti- 

 tude, 9,500 feet. 



Genl. Char. Similar to R. chrysopsis; tail long. 



Color. Above golden fulvous, darkest toward rump; beneath 

 buffy salmon; lips and chin grayish; tail dark above, paler beneath; 

 hands and feet whitish; wrists and ankles dark brown. 



Measurements. Total length, 182; tail vertebrae, 105; hind 

 foot, 20. 



260. colimse (Reithrodontomys!}, Merr., Proc. Wash. Acad. Scien., 



in, 1901, p. 551. 

 ALPINE HARVEST MOUSE. 



Type locality. Sierra Nevada de Colima, State of Jalisco, Mexico. 

 Altitude, 12,000 feet. 



