56 TRANS. OF THE WAGNER FREE INSTITUTE OF SCIENCE. 



Fig. 5. Upper extremity of a right metatarsal, front view. 



Fig. 6. Articular .surface of a right metatarsal. 



Fig. 7. Upper articular surface of a pastern. 



Fig. 8. Upper do. of Hippotherium ingenuum. From Peace Creek, Florida. 

 Page 21. 



Fig. 9. Upper do. of Hippotherium plicatile. From Archer, Florida. 



Fig. 10. Right upper molar tooth, outer view, Hippothermm montezuma. The 

 triturating surface represented in woodcut on page 22. 



Figs. 11, 12. Dermal bones of a Glyptodon. Natural size. From Peace Creek, 

 Florida. Page 26. 



Fig. II. Lateral view of a dermal bone. 



Fig. 12. Outer view of a dermal bone. 



PLATE VL 



Fig. I. Glyptodon petaliferus. A dermal plate, natural size. Page 25. 



Figs. 2,3. Dermal bone of a Glyptodont. 2. Outer view. 3. Lateral view. Natural 

 size. Page 25. 



Figs. 4-7. Testudo crassiscutata. 4, 5. Anterior and posterior portions of the 

 plastron, one-fourth the diameter. Page 29. 



Fig. 6. Femur, of the left side, front view, one-half size. Page 31. 



Fig, 7. Tibia, of the left side, front view, one-half size. Page 31. 



PLATE VII. _ 



Blephas colurabi. A last upper molar tooth, right side, lateral view, one-half 

 the natural size. From Peace Creek, Florida. See page 23. 



PLATE VIII. 



Fig. I. Platygonus compressus. Complete skull, one-half the natural size. 

 From near Rochester, N. Y. Page 41. 



Fig. 2. Elephas columbi. Left ramus of a mandible with the last molar tooth, 

 with a view of the triturating surface of the latter ; one-half the natural size. From 

 Peace Creek, Florida. Page 23. 



PLATES IX. AND X. 



Fig. I. Fulgur contrarius. From the Pliocene formation of Florida, closely con- 

 forming to the original of that species from the Miocene formation of North Carolina. 

 The illustration of Conrad's type of the species is from a male individual. That of our 

 figure I and several others of the same plates are from female forms ; the canal in these 

 being wider than in the male forms. Size of the shell 7X inches. Page 51. 



Fig. 2. The same species, with the angle of the shoulder slightly pronounced. 

 3)^ inches. 



Fig. 3. The same, with angle still more pronounced and with rudimental spines. 

 4 inches. 



Fig. 4. The same, with spines better developed. 6 inches. 



Fig. 5. Fossil Fulgur perversus, with less produced spines than usual. 7K inches. 



Fig. 6. Fossil Piilgur perversus. 5% inches. 



Fig. 7. An average specimen of the living Fulgur perversus of the west coast 

 of Florida, y}^ inches. 



