264 RHITHRODONTOMYS. 



Genl. Char. "Skull similar in general to that of R. saturatus, but 

 incisive foramina more broadly open; molar series slightly shorter." 



Color. Above fulvous and black, beneath pale fulvous; chin, 

 throat, hands, and feet whitish; tail above dusky, beneath whitish. 



Measurements. Total length, 177; tail vertebrae, 100; hind 

 foot, 19.5. 



255. mexicanus (Reithrodon!) , Sauss., Rev. Mag. Zool., 2meSer., xn, 

 1860, p. 109, pi. ix, fig. i. 



sumichrasti, Sauss., Rev. Mag. Zool., 2me Ser., 1861, p. 3. 

 MEXICAN HARVEST MOUSE. 



Type locality. Mountains in State of Vera Cruz, Mexico. 



Geogr. Distr. State of Vera Cruz, Mexico. 



Genl. Char. Size large ; tail longer than head and body ; feet large. 



Color. Above rufous brown; sides orange brown; under parts 

 white, tinged with buff on throat and breast; ears brown; tail 

 blackish, almost naked; hands white; feet dusky. 



Measurements. Total length, 153-169; tail vertebra?, 80-100; 

 hind foot, 18-20; ear, 15-17. 



a. intermedius (Reithrodontomys!}, Allen, Bull. Amer. Mus. Nat. 

 Hist., 1895, p. 136. 



intermedius (Rhithrodontomys) , Elliot, Syn. N. Am. Mamm., 1901, 



p. 153. Id. Suppl. p. 494. 

 BROWNSVILLE HARVEST MOUSE. 



Type locality. Brownsville, Cameron County, Texas. 



Geogr. Distr. Northern Mexico, into Texas. 



Genl. Char. Smaller than R. mexicanus and paler. 



Color. Above grayish brown, washed with pale yellowish, mixed 

 with dark hairs on middle of back, sides lighter; lateral line yellowish, 

 beneath white; ears brown; apical third of inner side rufous; feet 

 whitish; tail dusky, nearly unicolor. 



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

 21 ; ear, 13. 



b. fulvescens (Reithrodontomysl), Allen, Bull. Amer. Mus. Nat. 



Hist., 1894, p. 319. 

 OPOSURA HARVEST MOUSE. 



Type locality. Oposura, State of Sonora, Mexico. 



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



Genl. Char. Similar to R. mexicanus, more yellowish. 



Color. Above yellowish brown, lined with black; lateral line 

 fulvous; under parts whitish; tail above pale brown, beneath lighter; 

 hands and feet whitish. 



