188 



785. A portion of the thick compact wall of the shaft of the femur of a large 



Proboscidian Pachyderm, probably the Mastodon giganteus. 

 From the tertiary deposits of Kentucky, North America. 



Purchased. 



786. The right tibia of the Mastodon giganteus. 



From the tertiary deposits of Kentucky, North America. 



Purchased. 



787- The left tibia of the Mastodon giganteus, apparently from the same indi- 

 vidual as the preceding. 



From the tertiary deposits of Kentucky, North America. 



Purchased. 

 788. The right tibia of the Mastodon giganteus : from the large size of this 

 bone, as compared with the preceding specimens, the individual to which 

 it belonged was probably a male. 



From the tertiary formations of Ohio, North America. 



7S9. The left astragalus of the Mastodon giganteus. 



From the tertiary formations of Ohio, North America. 



790. The right os calcis of the Mastodon giganteus. 



From the tertiary formations of Ohio, North America. 



Purchased. 



Purchased. 



Purchased. 



Genus Dinotherium. 



Most of the following illustrations of the present extraordinary genus of 

 Pachydermal quadrupeds consist of plaster casts of the original fossils in the 

 Museum of Hesse Darmstadt, described and figured by their discoverer, Dr. Kaup. 



791. The palatal and alveolar portions of the upper jaw of a young Dinothe- 

 rium, giganteum, Kaup, which had perished during the period of the 

 change in the dentition. The first deciduous molar has been shed on 

 each side : the second and third deciduous molars are in place ; behind 

 these is the third permanent molar, or the first of the series of true 



