EXPLANATION OF PLATE XI. 



Skulls of Evoiomys. 



From left to right : — 



1. E. rufocanus smithii, young female (6.1.4.344). Condylo-basal length 



23"5 mm. i 



2. E. r. smithii. young male (Type of " Craseomys niigalm "). Condylo- 



basal length 2o'4 mm. 



3. E. r. regiilus, subadult male (Type). Condylo-basal length 26'6 mm. 



4. E. wofnessenshii, old female. Condylo-basal length 23'2 mm. 



