U. S. NATIONAL MUSEUM 



PROCEEDINGS, VOL. 58 PL. 15 



I. Thomasomys daphne. 



2. Akodon SURDUS. 



3. Chroeomys inornatus. 



4. MicRoxus torques. 



5. Orolestes inca. 

 SKULLS OF PERUVIAN MAMMALS. 



