92 
Records of the Geological Survey of India. 
[vOL. XI. 
two 
teeth belong to the milk series. The dimensions of the 
two teeth are as 
follows;— 
In. 
Length of last milk-molar ..... 
1-50 
Width of . 
1-30 
Length of penultimate milk-molar .... 
1-52 
Width of „ „ .... 
100 
Having now examined all the types of upper molars of this group of ani¬ 
mals contained in Mr. Theobald’s collection, it now remains to consider two lower 
jaws of two species of Sivatherioid animals, which cannot be referred to SivatTiermm 
giganteum ; both specimens are from the Siwaliks of the Punjab. 
The first specimen consists of the greater portion of the right ramus, the 
only missing parts being the extremity of the coronoid process, and the part in 
front of the first premolar; the whole of the dental series is complete and but 
little worn. 
I shall here notice this specimen veiy shortly, as I shall figure it on a subse¬ 
quent occasion. The ascending portion of the ramus has its anterior border 
almost at right angles to the axis of the horizontal portion, which distinguishes 
the jaw from that of Gmielopardalis (the corresponding part of the jaw of 
6'i«at7ien«m is unknown). The horizontal portion is slender and bows outwards 
to a great extent in the middle, so that the part immediately below the hinder 
barrel of the first molar is by far the most prominent point in the whole of this 
side of the jaw. The two latter characters at once distinguish the specimen from 
the mandible of Sivatlterimn, which is very deep, and which is slightly concave 
externally. 
The teeth are distinguished from those of Swailiermm by the eostre on the 
internal surfaces, and especially those of the hinder barrel, being much less pro¬ 
minent and bold; and by the reticulations of the enamel being finer, as well as 
by the greater obliquity of their dorsa to their long axes; in SivatJierium a rod 
placed on the last molar will touch both median costfe, while in this specimen it 
will touch tho median costa of the second barrel, and the posterior costa only of 
the first barrel. 
The premolars are very like those of the fragment of a jaw referred above to 
Oamelopanlalis, but are much larger, and relatively higher, and the enamel is more 
rugose. In the following table I have given tho dimensions of this specimen, of 
the mandible of Camelopardalis, and of SivatJierium; tho latter dimensions are 
taken from a cast of tho specimen figured on plate twenty-one of the first volume of 
the “ Pala3ontological Memoirs,” the original of which is in tho British Museum :— 
Length of sis molars . . . . ♦ 
Camelo. 
6-50 
Speeimen. 
10-30 
Siva, 
„ four last te(“tli .... 
4'10 
7-70 
9-00 
,j from angle of jaw to distal end of molar series 
lO’SO 
14-50 
•.. 
Heiglit fi'om angle to summit of condyle 
6-80 
7-50 
... 
Depth at middle barrel of last molar . 
1'70 
3-30 
4-70 
,, at hind barrel of first molar 
1-75 
2-52 
3-45 
„ at second prcmolar .... 
1-55 
2-40 
3-00 
Thickness at Hrst molar .... 
1-00 
1-95 
215 
Height of unworn last molar .... 
1-70 
... 
