PATAGONIAN EXPEDITIONS I PAL/EONTOLOGY. 



EXPLANATION OF PLATE XII. 



PAGE 



Fig. i. PROEUTATUS CENOPHORUS : Skull, left side (No. 15,491) ... 59 



Fig. 2. base (No. 15,491). 



Fig. 3- top (No. 15,491). 



Fig. 4. " Occiput (No. 15,491). 



Fig. 5. " " Mandible, crown view (No. 15,491). 



Fig. 6. " " Rostrum, ventral side (No. 15,491). 



Fig. 7. PROEUTATUS sp. : Skull, top (No. 15,433). 



Fig. 8. " base (No. 15,433)- 



Fig. 9. " " Occiput. 



Fig. 10. PROEUTATUS DELEO, type : Scute of carapace ; Ameghino collection . 67 



Ki,, IT " " " " " " " " 



Fig. 12. " Mandible, right side 



All figures natural size. 



(VOL. v) 



