193 



been crushed by some geological force in the stratum in which it was 

 imbedded. The original of this tooth is in the possession of the Earl of 

 Enniskillen. 



From the miocene tertiary formations of Epplesheim. 



Presented by the Earl of Enniskillen. 



808. The third deciduous molar, right side, lower jaw, of the Dinotherium 

 giganteum. 



From the miocene tertiary formations of Epplesheim. 



Presented by Dr. Kaup. 



809. The last deciduous molar tooth, left side, lower jaw, of the Dinotherium 

 giganteum. 



The original was discovered in the miocene tertiarv formations at 

 Chevilly in the plain of Beauce, near Orleans, and is described and 

 figured by Cuvier in the ' Ossemens Fossiles,' 1822, torn. ii. pt. 1. p. 171. 



pi. 4. fi 



2. o. 



Presented by Baron Cuvier. 



810. The crown of the third permanent molar of the lower jaw, or the first of 



the series of true molars, of a young Dinotherium giganteum. The base 

 is widely open and the formation of the fangs not commenced. 

 From the miocene tertiary deposits of Epplesheim. 



Presented by Dr. Kaup. 



811. The corresponding tooth of a mature Dinotherium giganteum ; the fangs 



have been completed and the summits of the three transverse ridges, 

 characteristic of the first true molar, are worn down. 

 From the miocene tertiary deposits of Epplesheim. 



Presented by Dr. Kaup. 



812. The crown of the penultimate molar, left side, lower jaw, of the Dino- 



therium giganteum. It closely resembles the preceding, but is rather 

 further advanced in its development. 



The original was discovered, six feet deep, in a stratum of miocene 

 tertiary sand at Arbeichan, near Auch, in the Department of Gers. It 

 is described by Cuvier in the 'Ossemens Fossiles,' 1822, torn. ii. pi. I. 

 p. 166, who says, "II est presque carre\ et n'a que deux collines et un 



2 c 



