StttD^. 257 



M. 2203. Fragment of the right maxilla, showing m. 1 and m. 2 in 

 an almost unworn condition ; from the Lower Miocene of 

 St. Gerand-le-Puy (Allier), France. The teeth are appa- 

 rently identical with those of the cranium figured by 

 Filhol in the Ann. Sci. Geol. vol. xi. pi. vi. ; their united 

 length measuring 0,029. Purchased, 1885. 



40894. Fragment of the left ramus of the mandible containing the 

 three true molars, the last being not fully protruded; 

 from the Lower Miocene of Allier. This specimen agrees 

 precisely with the mandible figured by Filhol, op. cit. 

 pi. vii. ; the united length of roTT and m. 2 measuring 0,0305. 

 Presented by C. Falconer, Esq., 1867. 



27789. Part of the left ramus of the mandible in a much-decayed 

 condition, probably belonging to a small individual of the 

 present species, showing the last five cheek-teeth ; from 

 the Lower Miocene of Sauvetat (Puy-de-D6me). 



Croizet Collection. Purchased, 1848. 



Hyotherium scemmeringi, H. v. Meyer \ 



Syn. Chosropotamus sozmmeringi, H. v. Meyer 2 . 

 (?) Palceochcerus major, Pomel 3 . 



This is the largest species, but the specimens figured by Peters 

 indicate a considerable variation in size. 

 Rah. Europe. 



26698. Fragment of the right maxilla, containing the three true 

 molars ; from the Lower Miocene of Allier. This speci- 

 men is noticed by P. Gervais in the Zool. et Pal. Francaises, 

 2nd ed. p. 183, and referred to Pomel's P. major 4 ; it 

 differs from H. ivaterhousei by its superior size (the length 

 of the space occupied by the three molars is 0,055), by 

 its wider teeth, and the more complex crown of m . 3. In 

 all these characters it agrees with the description of 

 Palceochcerus major, and also with the teeth of H. scemme- 

 ringi, figured by Peters in the Denkschr. k. Ak. Wiss. 



1 ' Die fossilen Zahne und Knochen von Georgensgmimd,' p. 55 (1834). (The 

 text indicates that the name occurs in an earlier passage.) Choeropotamits. 



2 Ibid. p. 62. 3 Catalogue Methodique, p. 86 (1853). 



4 Filhol in the Ann. Sci. Geol. vol. xi. art. 1, p. 19, is unable to identify this 

 species, and suggests that it may be the same as H. ivaterhousei. Vide 

 Wilckens, Biol. Oentralblatt, 1885, p. 236. 



PART II. S 



