PATAGONIAN EXPEDITIONS: PAL/EONTOLOGY. 



EXPLANATION OF PLATE XLVIII. 



PAGE. 



Fig. i . PROTHYLACYNUS PATAGONICUS : Left half of the skull, palatal view 



(No. 15,700) .... 362 



Fig. la. " " Left half of the skull, dorsal view 



(No. 15,700) .... 363 



Fig. 2. Right half of the mandible, crown 



view (No. 15,700). The anterior 

 and median premolars are re- 

 stored from the opposite side . 362 



Fig. 3. Skull, posterior view (No. 15,700) . 364 



All the figures are natural size. 



(VOL. iv.) 



