266 RHITHRODONTOMYS. 
Measurements. Total length, 194; tail vertebre, 108; hind 
foot, 21. 
a.—toluce (Retthrodontomys!), Merr., Proc. Wash. Acad. Scien., 
IQOI, p. 549. 
Voitcan Totuca 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 vertebre, 98; hind foot, 21. 
258. perotensis (Keithrodontomys!), Merr., Proc. Wash. Acad. Scien., 
It, 1908, p. 550. 
Corre DE PEeroteE Harvest MOvusE. 
Type locality. Cofre de Perote, State of Vera Cruz, Mexico. Alti- 
tude, 9,500 feet. 
Genl. Char. Similar to Rk. chrysopsis, but colors duller; ears 
large; skull smaller; nasals equal to premaxille. 
Color. Above yellowish fulvous, lned 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 vertebre, 102; hind foot, 19. 
259. orizabe (Keithrodontomys!), Merr., Proc. Wash. Acad. Scien., 
(1G, | DOOTs 9-550. 
Ori1zABA Harvest Mouse. 
Type locality. Mount Orizaba, State of Puebla, Mexico. Alti- 
ude, (0,500 leet 
Genl. Char. Similar to Rk. chrysopsts; 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 vertebre, 105; hind 
foot, 20. 
260. colimz (Keithrodontomys!), Merr., Proc. Wash. Acad. Scien., 
Lil) SOOM, «Psaysle 
ALPINE Harvest Mouse. 
Type locality. Sierra Nevada de Colima, State of Jalisco, Mexico. 
Altitude, 12,000 feet. 
