RHITHRODONTOMYS. 269 



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



in, 1901, p. 548. 

 CALEL HARVEST MOUSE. 



Type locality. Calel, Guatemala. Altitude, 10,200 feet. 



Genl. Char. Similar to R. teniurostris , but paler; nasals narrow 

 and exceeding premaxillae in length; incisive foramina passing plane 

 of first molars. 



Color. Above yellowish brown, lined with black, with a reddish 

 tinge on rump; under parts salmon fulvous; tail dark brown; hands 

 and feet dark brown, becoming white towards toes; ears blackish. 



Measurements. Total length, 196; tail vertebrae, 112; hind foot, 

 22.5; Skull: basal length, 20; zygomatic breadth, 13; palatal length, 

 11.5; length of molar series, 4.5. (ex Type.) 



265. microdon (Reithrodontomys!), Merr., Proc. Wash. Acad. Scien., 



in, 1901, p. 548. 

 TODOS SANTOS HARVEST MOUSE. 



Type locality. Todos Santos, Guatemala. Altitude, 10,000 feet. 



Genl. Char. Small; ears and tail long; miniature of R. tenuir- 

 ostris. 



Color. Above reddish fulvous, deepest on rump; sides bright 

 fulvous; beneath salmon fulvous; orbital ring dark, tail dusky; 

 hands white; ankles and feet dark brown; toes white; ears dark 

 brown. 



Measurements. Total length, 185; tail vertebras, 113; hind foot, 

 21. Skull: basal length, 17; zygomatic breadth, 11.5; palatal length, 

 10 ; length of molar series, 3. (ex Type.) 



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



in, 1901, p. 549. 

 WHITE-LIPPED HARVEST MOUSE. 



Type locality. Cerro San Felipe, State of Oaxaca, Mexico. Alti- 

 tude, 10,000 feet. 



Genl. Char. Similar to R. microdon, but paler; skull with certain 

 comparative variations. 



Color. Above fulvous, darkest on dorsal region; lips, nose, and 

 under parts pure white; tail dark brown, paler beneath; wrists dusky; 

 feet and ankles blackish brown; ears brown. 



Measurements. Total length, 187; tail vertebras, 117; hind foot, 

 20. Skull: basal length, 17; zygomatic breadth posteriorly, 11.5; 

 length of palate, 10; length of molar series, 3. (ex Type.) 



266. hirsutus (Reithrodontomys!}, Merr., Proc. Wash. Acad. Scien., 



in, 1901, p. 553. 



