PART 1.] hyilchkev : Notices of Siwalik Mammals, 95 
desire to call attention to it. The specimen in question is far larger than the 
lower milk-molar which I have referred to Oamelo;paa-dalis sivalensis and cannot 
belong to that species; it also difEers very considerably in form from that speci¬ 
men, from which I think that it docs not belong to that genus. 
The tooth is composed of three complete barrels, the hindmost of which is 
the largest: these two characters assure us that the specimen is a last milk-molar, 
and not a last true molar. The outer columns of the barrels arc set very 
obliquely to the long axis of the jaw, and the median costa on the one perfect 
dorsum is slightly developed; in these respects the tooth differs from the true 
molars of Camelopardalis and agrees with those of Hydasptitliermm. Bach of 
the valleys on the outer side contains a large and pointed tubercle reaching to 
half the height of the crown. The length of the specimen is 1'9 inch and its 
greatest width 0'94 inch. 
The tooth is slightly longer than either of the two anterior molars of II. 
leptognathus, which is the same relation as exists between the cori’esponding 
teeth of Camelopardalis simalensis and ordinary Ruminants: and I think it 
extremely probable that it should be referred to the former species; it is tino 
that the permanent molars of II. leptognathus have no accessory columns like the 
milk-molar in question, but it not nnfrequently happens that the lacteal series 
does differ from the peimanent series in cci’tain points of detail, such differences 
generally consisting in that the lacteal molars retain ancestral characters which 
have been lost in the permanent series. 
Among the whole of the specimens sent down by Mr. Theobald from the 
Siwaliks of the Western Punjab, I cannot find any remains which I can with 
certainty refer to Sivafherivm gigmiteum, and it is not improbable that the range 
of that animal did not extend into the area in question, where it was replaced 
by the allied genera; no species of this group have hitherto been found in Sind. 
Among Mr. Theobald’s collection there are a considerable number of the limb 
bones of various Sivatherioid animals, which are generally smaller than those of 
8. giganteum, and which most probably belonged to some of the above described 
smaller species. I have not yet had time to examine those bones in any detail. 
PBBISSOBACTYLA. 
Genus: Rhinoceros. 
During the present and past year the Indian Museum has acquired a large 
series of specimens of the osteology and dentition of the fossil species of this 
genus, which have been obtained by the exertions of Mr. Theobald in the 
Siwaliks of the Punjab, and most especially from the highly fosailiferous beds 
of the village of Asnot in the Jhelam district. 
Among these specimens are the complete adult molar series of Bhinoceros 
sivalensis, the upper milk dentition of B. palceindims, and a complete ramus 
of the mandible with the symphysis of the same species, and, most important of 
all, a large series of the upper and lower dentition of the new species B. plawi- 
dens, which appears to be confined to the Punjab. No specimens of B. plntg- 
rhinus occur either in the present or in previous collections from the Punjifb, 
and it is not improbable that this species did not occur in that area. 
