78 
Records of the Geological Survey of India. 
[VOL. X. 
genera are more closely connected than supposed by Professor Kowalevsky in his memoirs 
on the Hyopotamidce. The dimensions of the least worn of the two teeth are as follows:— 
Length ... ... ... ... ... ... *8 
Breadth ... ... ... ... ... ... ... '89 
Height of crown ... ... ... ... ... ... *45 
The genus Myopotamus in Europe ranges from the Upper Eocene to the Lower Miocene; 
in Sind it is obtained from beds which immediately overlie strata of Upper Miocene age. 
New genus of Mebycopotamoid. 
A large and complete upper molar tooth, scarcely touched by wear, is among Mr. 
Blanford’s collection, which belongs to the same type of teeth as those of Merycopotamus, 
but which cannot be referred to this or any other known genus. The tooth carries four 
crescentoid columns on the masticating surface, which are relatively higher than those of 
Merycopotamus; the general form of these columns is the same as in the latter genus, 
with oue important exception, which is that the external surfaces of the outer pair of 
columns are simply concave; they lack both the bold median ridge and the reflected 
anterior and posterior borders which characterise the teeth of Merycopotamus; the tooth 
has a well marked cingulum, as in the latter genus. The dimensions of the specimen are 
as follows:— 
Length ... ... ... ... ... ... ... 1*13 
Breadth ... ... ... . ... ... ... l’l 
Height of crown ... ... ... ... ... ... *81 
I hope that additional specimens will be forthcoming to further elucidate the affinities 
of this specimen. 
Anthbacotheeium Punjabiense, n. sp. nobis. 
Among a largo collection of teeth collected in the Siwaliks of the Punjab by 
Mr. Theobald during last year, I have lately discovered a portion of a lower jaw which 
undoubtedly belongs to the above genus. The discovery of this genus, like Myopotamus 
in the Siwaliks, is very remarkable, if the specimen has been obtained from the same 
horizon as that from which the majority of fossils come, since in Europe the genus is not 
found in strata newer than the Lower Miocene. It is, however, quite possible in this case, 
though not in the case of Myopotamus , that the specimen may have been obtained from a 
lower zone in the Siwaliks than the one which yields the majority of vertebrate fossils: 
the greater number of the specimens obtained from these deposits are either gathered 
from the washed-out debris of the rocks by native collectors, or obtained by them from the 
villagers. If the specimen is from the normal fossiliferons zone, it affords another instance 
how in one region a genus may live down to a very much later period of time than in 
another; and so how the faunas of what are two distinct periods in oue region may all 
appear in the same period in another region. 
The specimen in question consists of the hinder portion of a right ramus of the mandi¬ 
ble, containing the two last molars. The inner columns of the barrels of these teeth are 
approximately conical (bunodont), while the outer columns are concave internally (seleno- 
dont); the anterior extremity of the hindmost outer column joins a process from the inner 
column, so that the intermediate hollow is closed anteriorly and open posteriorly; the last 
molar has a large talon-column which is concave anteriorly, and which gives off a central 
process to join the postero-externa! column. The teeth are almost identical in general form 
