42 TTNGULATA. 



Hob. South America (Colombia, Argentine Republic, Uruguay, 

 and Brazil). 



19951. The cranium and mandible of an adult male, with the vertex 

 {Fig.) restored in plaster ; from the Pleistocene of Buenos Ayres, 



Argentine Republic. The specimen shows the upper 

 incisors, the short tuskless mandibular symphysis, and 

 m. 2 and m. 3 of both jaws; m. 2 belongs, however, to 

 another individual. The mandible is described and figured 

 by Falconer in the ' Fauna Antiqua Sivalensis,' pi. xxxv. 

 figs. 3, 3 a, and in the ' Palseontological Memoirs,' vol. i. 

 p. 99, pi. viii. fig. 3 1 , under the name of M. andium 2 . 



Purchased, 1846. 



M. 2950. Part of the palate, showing the broken m. 2 of both sides, 

 (Fig.') and the left m. 3 in an early condition of wear ; from the 

 Pleistocene of South America. Described and figured by 

 Camper in the Nov. Act. Petrop. vol. ii. p. 259, pi. viii. 

 (1788). The double trefoils are very distinctly seen in 

 m- 3, which is relatively short and carries four ridges and 

 a double talon. No history. 



39370. An imperfect cranium of a female Mastodon, probably 

 belonging to the present species ; from the Pleistocene of 

 the Rio Negro, Uruguay. The incisive alveoli (of which 

 the left one contains the base of the tusk) are of small 

 size ; ro. 2 and m. 3 were in use, but their crowns have 

 been broken off ; the form of the base of m. 2 agrees almost 

 exactly with No. 19952. 



Presented by D. A. Stoddart, Esq., 1865. 



19951 a. An incisor provisionally referred to this species ; from 

 South America. Purchased, 1846. 



39372. The second left upper true molar, in a half-worn condition ; 

 from the Rio Negro. 



Presented by D. A. Stoddart, Esq., 1865. 



M. 2951. The second left upper true molar, in a slightly less worn 

 condition ; from South America. 



Purchased. Before 1840. 



19952. The second right upper true molar, in a rather more worn 



condition ; from Buenos Ayres. Purchased, 1846. 



1 From vol. ii. p. 274 of this work it appears that Falconer subsequently 

 discovered that this determination was erroneous. 



2 Described as being drawn of ^ instead of J nat. size. 



