66 lieconls of the Geolinfical Simiey of India. [vol. xi. 
species are found mixed pell-mell together; and which probably indicates an old 
quicksand in which the Siwalik animals were engul23hed. 
Prom this deposit I hope that many valuahle specimens will yet he 
obtained, which will throw more light on the affinity of some of the less 
known Siwahk animals than can be obtained from the study of a few isolated 
bones or teeth. The bed has already yielded many specimens, among which I 
may notice the comjslete cranium of a gigantic jug, part of the cranium with 
milk dentition of the new trilophodont Mastodon and several associated sets 
of foot bones. Among the latter is a nearly jjerfect foot of Hippotherium, which 
shews us that the Asiatic species of the genus had precisely the same conforma¬ 
tion as the European forms. 
I will now mention the most important and interesting of the specimens 
obtained during the past year; in the course of these notices I shall have to 
mention several re-determinations of previously noticed specimens ; these re-deter¬ 
minations have either become necessary owing to the discovery of more perfect 
specimens or owing to the eiTors of previous determinations. 
These re-determinations, though of course to be regretted, are almost unavoid¬ 
able in determining such isolated specimens as are the majority of the fossils from 
the Siwaliks, and are also made more frequent in the jmesent instance, owing to the 
extremely unsatisfactory state of the previous literature referring to Siwalik 
Mammalia. 
I may also here mention that Mr. Theobald has collected several bones of 
Siwalik Birds, and a considerable number of the remains of Reptiles; these, 
however, will not be further noticed at present, as I have not yet had an oppor¬ 
tunity of studying these in any detail. 
PRIMATES. 
Genus; Macacus. 
Remains of quadrumanous Mammals have been long known from the Siwaliks, 
and indeed the specimens obtained from those rocks were the first known fossils 
belonging to the order. These remains, however, are of extremely rare occur¬ 
rence, the kno'ivn sjaecimens only numbering some five or six; up to the present 
time, no specimens of the remains of this order have been obtained among the 
many hundreds of specimens which Mr. Theobald has forwarded from the Siwaliks 
of the Punjfi.b to the Indian Museum. In December last, however, two 
specimens of the upper jaw of a small monkey wore received at the Indian 
Museum from Mr. Theobald, which had been obtained from the Siwaliks of the 
village of Asnot, in the Punjab, and which foi-m the subject of the present notice. 
Before desci-ibing the now specimens, it may be well to consider for a moment 
the remains of Monkeys w'hich have been j)reviously obtained from the Siwaliks; 
the memoirs on the specimens will be found collected in the first volume of the 
“ Palffiontological Memoirs,” accoinjianied by a j)]ato. 
The first specimeu discovered was a part of the right maxilla with the molar 
series. In speaking of the specimen the discoverers (Messrs. Baker and Durand) 
conclude by observing : “ This circumstance and the diiforcnccs before jiointcd out, 
