SIWALIK SELENODONT SUINA, ETC. 
25—166 
the mandible fcompare U F. A. S.fi plate LXI., fig. 6«, and plate LXVII., fig. 4 J, as in 
both genera the 1 angle ’ is produced into a large descending plate, preceded by a 
deep notch in the inferior border of the horizontal ramus: this plate and notch are, 
however, developed to a smaller extent in the A nthracotheridce (plate XXIV. figure 4). 
The limb-bones are nearer those of the Anthracotheridce than those of the hippo- 
potamus, as is well exemplified by the more elongated form of the astragalus ( compare 
U F. A. S.fi plate LX VIII., figures 9 and 20); and by the separation of the radius 
and ulna, and their much more elongated form. The axis vertebra, of which there 
is a specimen in the Indian Museum, is an elongated bone like that of Hyopotamus. 
Position of the genus . — After their assignation of Merycopotamus to the rank of a 
distinct genus, the authors of the “ Fauna Antiqua Sivalensis ” still referred it to the 
family Rippopotamidce, a reference which has been upheld by several later writers. 1 
The intimate resemblance of the molars to those of the Anthracotheridce, and Oreodontidae, 
leaves, however, little doubt but that the true position of the genus is in immediate 
juxtaposition to those families : the form of the mandible indicates, on the other 
hand, a distant cousinship with the hippopotamus. 
Distribution. — Remains of this species have hitherto been obtained only from the 
Siwaliks of Burma and the sub-Himalaya ; the statements of their alleged occurrence 
in the Manchhars of Sind having been founded on bones belonging probably to 
allied genera. 
Genus II: CHCEROMERYX, 2 Pomel. 
Species : Chceromeryx silistrensis. (Pentland), in parte. 
Synonym. Anthracotherium silistrense. Pentland, in parte. 
History and general characters , — This genus and species is only known by the 
one fragment of a maxilla with three molars, obtained from the Garo hills, and 
described by Mr. Pentland, in the memoir quoted above, together with other remains, 
under the name of Anthracotherium silistrense. As already stated in the notice of that 
species, all these remains were referred, in 1848, by M. Pomel to a new genus under 
the name of Glioeromeryx , while it was subsequently shown by the present writer that 
this title should be confined to the one maxilla in which the molars are four-columned 
selenodont teeth. It has not been found possible to discover where this maxilla now 
is, but as a fair figure of it is given in Mr. Pentland’ s memoir, 3 and an excellent one 
in the “ Fauna Antiqua Sivalensis,” (plate LXVIII., figures 22 and 22a), there is no 
difficulty in determining its affinities. There is a cast of the specimen in the Indian 
Museum. 
Upper molars. — The above mentioned maxilla, as is shown by the figures, 
contains three teeth, and belongs to the left side of the skull. The teeth are but 
slightly abraded by wear, and are, respectively, the last premolar (left side of figure) 
1 See Huxley, “Anatomy of Vertetrated Animals,” 1st ed., p. 375. 
3 “ Trans. Geol. Soc.,” Ser. 2., Vol. II., pi., XLV., figs. 2 and 3. 
2 Erom choiros, a pig, and merux. 
