171 



succeeded by a bituberculate talon. The crown is supported by two 

 fangs, the posterior one being the largest and supporting the two poste- 

 rior pairs of tubercles and the talon. Presented by Baro?i Cuvier. 



699. The crown of the antepenultimate grinder of the upper jaw of a Mastodon 



angustidens. 



From the miocene tertiary formations of the South of France. 



Purchased. 



700. A portion of the molar tooth of the Mastodon angustidens : it has been 



much worn, and the uniting base of the two anterior ridges is exposed 

 by their abrasion. 



Locality unrecorded. Hunterian. 



/0]. A fragment of a molar tooth of the Mastodon angustidens. 



Locality unrecorded. Hunterian. 



702. A fragment of a molar tooth of the Mastodon angustidens. 



Locality unrecorded. Hunterian. 



703. The posterior part of a molar tooth of the Mastodon angustidens. 



Locality unrecorded. Hunterian. 



704. The cast of a portion of the tusk of the lower jaw of the Mastodon an- 

 gustidens [Mastodon longirostris, Kaup). 



From the miocene tertiary formations at Epplesheim. 



Presented by the Earl of Enniskillen. 



Mastodon Andium. 



705. A fragment of an upper molar tooth of the Mastodon Andium, Hum- 



boldt. The molars of these species are characterized by the strong and 

 irregular plications of the extremely thick enamel. 

 From the recent tertiary deposits of South America. 



Presented by Charles Darivin, Esq., E.P.S. 



706. A portion of a molar tooth of the Mastodon Andium, Humboldt : it 



supports two transverse ridges, each divided into two principal mam- 

 millae, which are again subdivided into smaller mammillae : these when 



z 2 



