60 RITHRODONTOMYS. 



cous, beneath grayish white; hands white, with a dusky stripe on 

 upper side: feet whitish; ears dark brown. Type in United States 

 .National Museum. 



Measurements. Total length, 154; tail, 83; hind foot, 16.5. Type 

 in United States National Museum. 



Rhithrodontomys fulvescens chiapensis Howell. 



Reithrodontomys (!) fulvescens chiapensis Howell, N. Am. Fauna, 

 1914, No. 36, p. 53. 



Type locality. Canjob, Chiapas, Mexico. 



Gcogr. Distr. Highlands of the State of Chiapas, Mexico. 



Gent. Char. Similar to R. helvolus but darker and smaller. 



Color. Upperparts ochraceous-salmon, lined with black; lateral 

 line salmon; underparts grayish white; tail above fuscous, beneath 

 whitish; hands and feet grayish ; ears fuscous. Type in United States 

 National Museum. 



Rhithrodontomys fulvescens nelsoni Howell. 



Reithrodontomys (1) fulvescens nelsoni Howell, N. Am. Fauna, 1914, 

 No. 36, p. 53. 



Type locality. Colima, State of Colima, Mexico. 



Geogr. Distr. Coast region of the State of Colima and Province 

 of Tepic, Mexico. 



Genl. Char. Similar to 7?. tennis but smaller; more ochraceous. 



Color. Upperparts deep ochraceous-buff; tail above fuscous, 

 beneath grayish white; hands pale buff, feet whitish; ears dusky; 

 hair brown. Type in United States National Museum. 



Rhithrodontomys fulvescens mustelinus Howell. 



Reithrodontomys (!) fulvescens mustelinus Howell, N. Am. Fauna, 

 1914, No. 36, p. 54. 



Type locality. Llano Grande, Oaxaca, Mexico. 



Geogr. Distr. Coast regions of the States of Oaxaca and Guerrero. 



Genl. Char. Similar to R. helvolus but darker; underparts Imffy. 



Color. Up) id-parts ochraceous-salmon mixed with black; under- 

 parts pinkish buff; tail above fuscous, beneath whitish; hands buffy 

 white; hind feet grayish white; ears hair-brown. Type in United 

 Stales National Museum. 



M, <iM<ic>ils. Total length, 184; tail, 105; hind foot, 20. 



Rhithrodontomys rufescens luteolus Ito\vell. 



Reithrodontomys (!) rufesccns lutenlus Unwell, N. Am. Fauna, i<n4, 

 No. 36, p. 57. 



