254 TJNGULATA. 



Hyotherium typum (Pomel '). 



'IPS * 



Syn. Chasropotamus meissneri, H. v. Meyer a . 

 Hyotherium meissneri, H. v. Meyer 3 . 



Pateochcerus typus r -tn^- ienglri of the space occupied by 



Palceoch&rus ^'ue molars is 0,042. In the specimen figured 



Hyotherivrais in the Zool. et Pal. Franchises, 2nd ed. 



Ampkicfyjji, fig, 2 a, under the name of P. typus, the corre- 



Peters in t lin S length is only 0,035, indicating the probability 



identifies H.& specific distinctness. 



Museum in Bravard Collection. Purchased, 1852. 



was, howf s t O f a fragment of the right ramus of the mandible, con- 

 adopt f taining the much-worn m. 2 and m. 3. The original is 

 identif f rom L a Holiere (? Tarn-et-G-aronne). The length of the 

 the E space occupied by the two teeth is 0,034 ; the correspond- 

 tlie ing space in No. 34961 b being 0,032. 

 rf Presented by John Brown, Esq., 18o2. 



flt. 2200. A second and third lower true molar, agreeing almost 

 precisely with those of 34961 b, and provisionally referred 

 to the same species ; from the Upper Eocene of Caylux 

 (Tarn-et-Garonne). These teeth are apparently identical 

 with those of the mandible from the same deposits figured 

 by Filhol in the Ann. Sci. Geol. vol. viii. pi. xiv. fig. 292, 

 under the name of Chceromorus simplex. 



Purchased, 1885. 



27805. Fragment of the right ramus of the mandible, with the 

 unworn m . 2 and m. 3, perhaps belonging to a small indi- 

 vidual of the present species ; from the Lower Miocene of 

 Antoign (Puy-de-D6me). 



Croizet Collection. Purchased, 1848. 



M. 2202. Fragment of the left ramus of a mandible of a young 

 animal, provisionally referred to this species ; from the 

 Upper Eocene of Caylux. This specimen shows mm. 4 

 (length 0,0165), the broken base of m. 1, and the germ of 

 m. 2 detached from its alveolus. Purchased, 1885. 



Hyotherium waterhousei (Pomel 1 ). 

 Syn. Palaochoerus waterhousei, Pomel 2 . 



This species is considerably larger than the last, but the structure 

 of the molars is very similar. 

 Hub. France. 



1 Catalogue M6thodique, p. 86 (1853), Paleeochoerus. a Loc. cit. 



