PATAGONIAN EXPEDITIONS I PALAEONTOLOGY. 



turn 



Fig. \ia. ACAREMYS MINUTISSIMUS : The same teeth, X f. No. 15,086. 

 Fig. 12. ACAREMYS MURINUS : Right upper molars, crown view, Xf. No. 



15.872 430 



Fig. 1 3. ACAREMYS MINUTUS : Right lower teeth, crown view, X f . No. 



15,281 43 2 



(VOL. v) 



