PART 1 .] 
Lydekker: Notices of Hiwallk ManiMals. 
89 
have belonged to the same species as the small specimen I noticed above; but 
they might have belonged to the same species as the one that has the large 
detached lower premolar; this, however, we cannot be sm’C of until we know the 
form of the jaw to which the latter belonged. 
Reverting once more to the premolars, it may be r'emembered that in the above- 
mentioned notice in the “Palseontologia Indica,” I called attention to the less 
generalized form of the ultimate lower premolar of 0. sivalensis, and I have now 
to add (irrespective of the question of species) that this lengthening of the pre- 
molars was common to the whole series in all the fossil Siwalik Giraffes as far 
as we know; moreover, in their form the two anterior teeth in qirestion approach 
those of Sivatlierinm, and its allies, shewing a closer connection between the two 
genera. The brachydont form of the teeth under consideration shews that they 
belong to the true Giraffes. I shall hope to obtain further specimens to indicate 
the affinity of the new, slender-jawcd form, and do not therefore assign any name 
to the species at present. 
Whether any of the lower premolars in question belonged to Camelopardalis 
sivalensis, or whether they belonged to some other nearly allied animal, is in great 
part immaterial to the real interest of the specimens, which conclusively prove 
that there existed at least one species of Giraffe in the Siwalik period, of which 
the lower premolars manifested affinity with the Sivatlieriwm-liikst animals, while 
in the slenderness of its lower jaw, and in the brachydont character of its teeth, 
it was most nearly related to the living Giraffe. We have also seen that there 
appears to be good evidence of three Siwalik species of Giraffes, one very large, 
one of the size of the living species, and one much smaller; other specimens are 
much needed to throw further light on the first and second species. 
The only tooth requiring notice here, which belongs in all probability to 
Camelopardalis sivalensis, is a third lower milk-molar; this tooth belongs to the 
right ramus of the mandible; it is a three-barreled tooth, each barrel containing 
two columns, and the anterior barrel being the smallest of the three; these two 
latter characters serve to distinguish the tooth from the third lower trire molar, in 
which the hinder barrel consists only of one column, and is consequently the 
smallest of the three; the general form of the barrels is very similar to those of 
the permanent molars, the smaller size being the chief distinction; both of the 
valleys on the external side contain accessory tubercles. The length of the 
tooth is 1'2 inch, and its width 0'6 inch; I may observe here that this tooth is 
somewhat longer and narrower than the penultimate permanent lower molar, and 
also exceeds the length of the penultimate upper molar in the smaller specimen 
noticed above, by the same extent as it does the lower molar. This is about the 
proportion that occurs in living Ruminants, and is noticed here, as being of im¬ 
portance in referring certain teeth to be described immediately to their proper 
owners. 
In addition to all the above-mentioned teeth, there is an antepenultimate lower 
premolar of large size, which belongs to some Giraffe-like animal, but not to the 
same species or perhaps genus as any of the other teeth; the tooth is upwards of 
an inch and a quarter in length, which is longer than the corresponding teeth of 
the large jaw referred below to Hydaspithei-ium, and which, therefore, belonged 
a 
