157 



Hycenarctos, sp. Second right lower true molar ; from the 

 Pliocene (?) of China, j. 



that country) is of considerable interest. The specimen 

 has been previously noticed by the present writer in the 

 Geol. Mag. dec. 3, vol. 1, p. 444 (1884). 



Presented by D. Hanbury, Esq. 1853. 



Genus ARCTOTHERIUM, Bravard l . 

 Syn. Arctoidotheriuni) Bravard, MS. 

 Dentition : I. ? C. \, Pm. ? M. ? 



o 7 1 4' 3 



Arctotherium bonariense (P. Gervais 2 ). 

 S^n. (?) Ursus braziliensis, Lund 3 . 

 Ursus bonariensis, P. Gervais 4 . 

 Arctotherium latidens, Bravard 5 . 



Hah, S. America. 



32915-6. the cranium and mandible, from the Pleistocene of the 

 (Fig.} banks of the river Plata, Buenos Ayres. The cranium, of 

 which the palate is ^represented in the accompanying 

 woodcut (fig. 24), is imperfect posteriorly, and the man- 

 dible has lost the hinder part of the right ramus. The 

 teeth are in a well-worn condition. 



Prom the suppression of pm. 1, the double roots of pm- 3, 

 the squareness of m. 1, and the smaller extent of the back- 

 ward prolongation of the talon of m. 2, it is pretty certain 

 that the South-American fossil is generically distinct from 

 Ursus, and there is as little doubt that it is equally distinct 

 from Hycenarctos. It forms, in fact, a genus almost pre- 



1 Catalogue des Especes d'Animaux Fossiles recueilles dans 1'Amerique de 

 Sud (Parana, 1860), teste P. Gerrais. 



2 Zool. et Pal. Fran9aises, 1st ed. vol. i. p. 189 (1848-52), Ursus. 



3 Ann. Sci. Nat. (Zool.), ser. 2, vol. xi. p. 224 (1839). This name, if it 

 really belongs to the same species, has the priority. 



* Loc. cit. 6 Loc. tit. 



