MOLAH TEETH AND OTHER REMAINS OE MAMMALIA. 
69 
“ These fragments may, therefore, be considered as belonging to a new species ; 
to determine the genus with accuracy, these fragments are not suthcient : assuming 
the genus to be new, I propose the name of Sanitlierium (Sani : an Indian goddess) 
with the specific name of its discoverers.” 
The specimen in the Indian Museum {jigs. 6 and 7) from the same locality as 
the above shows the two hindmost lobes of the last molar of the right side of the 
mandible ; the alveolus of the anterior lobe is also shown. The tooth is very slightly 
worn ; it is constructed on the general type of the teeth of Suina, showing a narrow 
and shallow antero-posterior valley, and deeper transverse valleys, so that the 
summit of the crown forms transverse ridges divided into tubercles at the outer and 
inner extremities ; there is an irregular accessory tubercle in the centre of the 
transverse valleys ; and the extremities of the main tubercles are irregularly defined ; 
the crenulated cingulum on the inner surface does not extend to the hindmost lobe ; 
the outer tubercle of the first ridge has long projections from each of its internal 
angles. The plane of wear slopes very obliquely from within outwards ; the enamel 
is slightly wrinkled. The dimensions of the specimen are as follows : — 
In. 
Length of last molar ... ... ... ... 0’68 
Width of second ridge ... ... ... ... 0-31 
Probable depth of jaw ... ... ... ...0'75 
The teeth of this animal are distinguished from those of Stis by the greater 
simplicity and distinctness of the main tubercles, and consequently by the bound- 
aries of the dentine surfaces of the worn-crown being less contorted ; by the 
tubercle in the transverse valley being less distinct and smaller ; by the hinder lobe 
being larger and taller in proportion to the others ; by the plane of wear being con- 
siderably more oblique ; and, lastly, by the presence of the cingulum. 
The lower molars of Ryracotherium are at once distinguished from the present 
specimens by their higher tubercles, more open transverse valley, without any 
central tubercle, and absence of cingulum. 
The lower molars of Chcerotherium and Acotliermm have simple conical tuber- 
cles with very wide and open valleys, no accessory tubercles, and no continuous 
cingulum ; those of Hyotherium have the outer tubercles concave on the inner side, 
and the inner tubercles simple, and with no cingulum. 
The lower molars of Chceropotamus also have the outer tubercles concave on 
their inner side ; and the two pairs of tubercles are separated by a much wider and 
deeper longitudinal valley, so that the worn dentine surfaces would not be united 
till the crown was nearly completely abraded away : finally, the cingulum is not 
crenulated, and does not extend on to the anterior lobe. 
The lower molars of Rhagatherium and Hyopotanms have an approach to the 
form of the teeth of Ruminants, and are therefore widely different from the present 
specimens. 
In the living Reccari and Balnrusa the lower molars have no crenulated 
cingulum, and the third lobe of the last molar is much smaller in proportion to the 
others than in the present specimens. 
( 77 ) 
