LIST OF ILLUSTRATIONS. 



PLATES. 



Facing page. 



1. Type of Antrodemns valens Leidy compared 154 



2. Type of Allosaurus Jragilis Marsh 154 



3. Skull of Antrodemus valens Leidy, side and top views 154 



4. Skull of Antrodemus valens Leidy, side and top views 154 



5. Scapulae of Antrodemus valens Leidy 154 



6. Humerus of Antrodemus valens Leidy 154 



7. Radius, ulna, fore and hind feet of Antrodemus valens Leidy 154 



8. Sacrum and ilium of Antrodemus valens Leidy, side view 154 



9. Sacrum and ilia of Antrodemus valens Leidy, back and lower views 154 



10. Sacrum and ilia of Antrodemus valens Leidy, front and side views '. 154 



11. Pubes of Antrodemus, front and side views 154 



12. Ischia of Antrodemus valens Leidy, all aspects 154 



13. Hind limbs, pelvis and sacrum of Antrodemus valens Leidy, lateral view 154 



14. Femur of Antrodemus valens Leidy, all aspects 154 



15. Abdominal ribs of Antrodemus valens Leidy 154 



16. Articulated skeleton and restoration of Antrodemus valens Leidy 154 



17. Skull of Ceratosaurus nasicornis Marsh, side views 154 



18. Skull of Ceratosaurus nasicornis Marsh, side and top views .' 154 



19. Atlas and axis of Ceratosaurus nasicornis Marsh, all aspects 154 



20. Cervical vertebrae of Ceratosaurus nasicornis Marsh 154 



21. Sacrum and pelvis of Ceratosaurus nasicornis Marsh, ventral and front views 154 



22. Caudal vertebrae of Ceratosaurus nasicornis Marsh, side and ventral views 154 



23. Sacrum and pelvis of Ceratosaurus nasicornis Marsh, side view 154 



24. Metatarsals of Ceratosaurus nasicornis Marsh, front, sides, and top '. 154 



25. Metatarsals of Ceratosaurus nasicornis Marsh, back and end views 154 



26. Scapula and lower jaw of Ceratosaurus nasicornis Marsh 154 



27. Restorations of Ceratosaurus nasicornis Marsh 154 



28. Restorations of Ceratosaurus nasicornis Marsh 154 



29. Mounted skeleton of Ceratosaurus nasicornis Marsh 154 



30. Skeleton of Ceratosaurus nasicornis Marsh. 154 



31. Restoration of Ceratosaurus nasicornis Marsh 154 



32. Caudal vertebrae of Dryptosaurus? potens (Lull) and Antrodemus valens Leidy 154 



33. Dentary of Labrosaurus ferox Marsh 154 



34. Bones of Dryptosaurus? medius (Marsh), Coelurus agilis and Coelurus fragilis Marsh 154 



35. Pelvis and caudals of Ornithomimus sedens Marsh; Skeleton of Ornithomimus altus Lambe. . . 154 



36. Brain of Ceratosaurus nasicornis Marsh; unguals of Coelurus? gracilis Marsh and unidentified 



dinosaur 154 



TEXT FIGURES. 



1. Skull of Antrodemus valens Leidy, side view 8 



2. Skull and lower jaw of Tyrannosqurus rex Osborn, side view 9 



3. Skull and lower jaw of Antrodemus valens Leidy, side view 10 



4. Skull of Antrodemus valens Leidy, posterior view 11 



5. Skull of Antrodemus valens Leidy, superior view 11 



6. Skull of Antrodemus valens Leidy, oblique front view 13 



7. Left prefrontal of Antrodemus valens, Leidy, lateral and internal views 16 



IX 



