REFERENCES TO THE PLATES. 125 



Figs. 16, 17. Teeth, from near White Horse, Camden County, New Jersey. 



Fig. 16. Internal view of a large tooth. 



Fig. It. External view of a smaller tooth. 



Figs. 18-21. Teeth, from near Blackwoodtown, Camden County, New Jersey. 



Fig. 18. Internal view of a large tooth. 



Fig. 19. Internal view of a larger tooth. 



Fig. 20. Anterior view of the same specimen as the last. 



Fig. 21. External view of a third specimen. 



Figs. 22, 23. Teeth of an undetermined species of Crocodile, from North Carolina. Natural size. 



PLATE IV. 



Figs. 1-12. ET/posaurus Rogersii. Vertebrae and dermal plates, reduced to one-half the diameter 

 of the originals. 



Fig. 1. A posterior cervical vertebra, from the vicinity of Blackwoodtown, Camden County, New 

 Jersey. Lateral view, a, anterior ; p, posterior. 



Fig. 2. Posterior cervical vertebra, from Tinton Falls, Monmouth County, New Jersey, belonging 

 to the collection of Rutger's College. Lateral view, a, anterior ; p, posterior. 



Fig. 3. Fourth dorsal vertebra, belonging to the same individual and collection as the preceding 

 specimen. Lateral view, a, anterior ; p, posterior ; h, hypapophysis broken off. 



Figs. 4, 5. Dorsal vertebra, from the same individual as the specimen of Fig. 1 



Fig. 4. Posterior view. 



Fig. 5. Lateral view, or left side, a, anterior ; p, posterior. 



Figs. 6, 1. Dorsal vertebra, from Burlington County, New Jersey. 



Fig. 6. Anterior view. 



Fig. "7. View of right side. 



Fig. 8. Caudal vertebra, from the same individual as specimens of Figs. 1, 4, 5. View of the 

 left side. 



Figs. 9, 10. Caudal vertebra, from the same individual as the last. 



Fig. 9. Posterior view. 



Fig. 10. View of left side. 



Figs. 11, 12. Two dermal plates, from the same individual as the last. 



Figs. 13-18. Biscosaurus vetustus. One-half the diameter of the originals. From the same 

 skeleton as the specimens represented in Figs. 1, 2, 3, 1, 8, 9, Plate V. 



Figs. 13, 14. Carpal bone. 



Fig. 13. Dorsal or palmar surface. 



Fig. 14. View of the thick border, exhibiting the large nutritious foramina. 



Figs. 15, 16. Metacarpal bone. 



Fig. 15. Palmar surface. 



Fig. 16. View of the lower articular end. 



Fig. lY. Another metacarpal bone. 



Fig. 18. A phalanx. 



Figs. 19, 20, 21. Fragments of the right side of the lower jaw oi Bottosaurus Harlani, one-third 

 the diameter of the originals. 



Fig. 19. External view of the right dental bone. 



Fig. 20. Upper view of the same specimen. 



Fig. 21. External view of the right angular bone ; the artist has inadvertently tilted the forepart 

 too much upward. 



Figs. 22, 23. Portion of the left dental bone, probably of the young of Bottosaurus Harlani, from 

 Monmouth County, New Jersey. One-half the diameter of the original specimen. 



Fig. 22. Outer view. 



Fig. 23. Upper view. 



