ILLUSTEATIONS. 



1. Eight hand of a Eiver Tortoise 36 



2. A. Lower jaw of Plagiaulax minor .... 99 

 B. Lower jaw of Plagiaulax medius 99 



3. A. Lower jaw of Neoplagiaulax 101 



B. Lower jaw of Bettongia penicillata . . . . 101 



4. Skull of Diprotodon australis 103 



5. Skull of the Wombat (Phascolarctus fuscus) . . . 105 



6. Skull of Nototherium, side view 105 



7. Skull of Nototherium, front view 106 



8. Skull of the Giant Sloth 113 



9. Skull of the Three-toed Sloth 115 



10. Head of Glyptodon clavipes 124 



11. Left fore-foot of Anoplotherium 129 



12. Left fore-foot of the Peccary 130 



13. Coryphodon. Eight fore and hind foot 132 



14. Coryphodon. Skull with brain 134 



15. A Tuberculate and a Crescentic Tooth . . . . 138 



16. Eight fore-foot of a Pig 140 



17. Palaeochosrus typus, left upper jaw . .... 143 



18. Second lower molar of the Hippopotamus, to the right 145 



19. First upper molar of the Hippopotamus, to the right . 146 



20. Hippopotamus, right fore-foot 147 



21. I. Eight upper cheek-tooth of a Calf, before cutting the 



gum . . *_ 153 



II. Eight cheek-tooth of a Calf, after cutting the gum, 



artificially polished, from behind and the outside 153 



22. Auchenia hesterna. Second left upper cheek-tooth . 157 



