Goldman — Twelve Neto Wood Rats. 33 



over entire belly and more or less irregnlarly invading other parts; small 

 areas on pectoral and inguinal regions, sometimes including throat, pure 

 white ; ears thinlj' covered with grayish brown liairs ; ankU's dusky ; feet 

 white; tail grayish brown above, slightly paler below. 



Cranial char/irlcrs. — Skull small, short and relatively broad; braincase 

 large and smoothly rounded ; frontal region broad and tlat ; buihe large; 

 first upper molar witii antero-internal sulcus obsolete. Compared with 

 X. Ifpiiht the skull averages larger, with decidedly longer toothrow, larger 

 interparietal and smaller bullte. 



Measurements. — Type: Total length, 310; tail vertebrse, 139; hind 

 foot, 31. 



