EXPLANATION OF PLATE X. 



Skulls of Evotomys rujocanus shanseius. 



From left to right : — 



1. Young male (Type of " Caryomyi eva"). Condylo-basal length 



22-9 mm. 



2. Young female (Type of " Caryoniys inez^'). Condylo-basal length 



23-1 mm. 



3. Subadult male (Type). Condylo-basal length 25'7 mm. 



1 



