470 REFERENCES TO THE PLATES. 



Fig. 10. Front view of the lower jaw. One-half the natural size. 



riw. 11. Last lower premolar of the right side, viewed externally. Of the natural size. 



Fig. 12. Ceevus Waeeeni. See page 172. 



An antler. Of the natural size. 



Fig. 13. Mastodon obscurus. See page 245. 



View of the triturating surface of a last inferior molar tooth of the left side, purporting to have been 

 derived from a miocene formation of Caroline Co., Maryland. Taken from a cast in plaster. Half the 

 natural size. 



Fig. 14. Mastodon andium? See page 242. 



View of the triturating surface of a last superior molar of the left side. From Tambla, Honduras. 

 Half the natural size. 



Fig. 15. Mastodon ? See page 246 (in error indicated as Fig. 14.) Half the natural size. 



View of the triturating surface of a last lower molar of the left side, from a specimen purchased in 

 London, and supposed to have been originally derived from the United States. 



Fig. 16. Mastodon obscurus. See page 247. 



View of the triturating surface of the back part of a last inferior molar. From Tarboro, North 

 Carolina. Half the natural size. 



PLATE XXVIII. 



All the figures are of the natural size, except Fig 9. 



Figs. 1, 2. DicoTYLES nasutus. See page 385. 



Fore part of the upper jaw. 



Fig. 1. Inferior view. Fig. 2. View of the right side. In both views the left anterior incisor and 

 the right canine and anterior two molars are seen. 



Fig. 3. DicoTYLES . See pages 200, 387. 



An upper canine tooth, with the crown much worn in front. 



Figs. 4-7. Squalodon atlanticus. See page 416. 



Figs. 5-6. Apparently all internal views of three molars. Fig. 7. Anterior view of the same speci- 

 men as Fig. 6. 



Fig. 8. CosoRYX furcatus. See page 173. 



The greater portion of an antler, or horn core, attached to a fragment of the frontal bone. 



Fig. 9. Ceevus taeandus? See page 377. One-fourth the diameter of nature. 



An antler. From Burlington Co., New Jersey. 



Figs. 10, 11. Trucifelis fatalis. See page 366. 



Upper sectorial molar tooth, inserted in a portion of the maxilla of the right side. 



Fig. 10. Outer view. Fig. 11. Inner view. 



Figs. 12, 13. Phoca debilis. See page 415. 



Teeth. From the sands of Ashley River, South Carolina. 



Fig. 14. Phoca modesta. See page 415. 



Tooth found with the preceding. 



Figs. 15-17. Squalodon Holmesii. See page 418. 



Teeth. From the eocene formation of Ashley River, South Carolina. 



Figs. 18, 19. Squalodon protervus. See page 423. 



Teeth. From the Ashley River deposits, South Carolina. 



