PATAGONIAN EXPEDITIONS ! PALEONTOLOGY. 



Fig- 



I. 



Fig. 



2. 



Fig. 



3- 



Fig. 



4- 



Fig- 



5- 



Fig. 



6. 



Fig. 



7- 



Fig. 



8. 



Fig- 



9- 



Fig. 



lO. 



Fig- 



II. 



Fig. 



12. 



EXPLANATION OF PLATE XII. 



Proeutatus cenophorus : Skull, left side (No. 15,491) . 



base (No. 15,491). 

 '' top (No. 15,491). 

 '' '' Occiput (No. 15,491). 



'' '' Mandible, crown view (No. 15,491). 



" '' Rostrum, ventral side (No. 15,491). 



Proeutatus sp. : Skull, top (No. 15,433). 

 '' base (No. 15, 433)- 

 Occiput. 

 Proeutatus deleo, type : Scute of carapace ; Ameghino collection 



'' '' Mandible, right side 



All figures natural size. 



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(vol. v) 



