16 
FAUNA ANTIQUA SIVALENSIS. 
Peay DOUG 1B, 
Figs. 1, 2, and 3.—Elephas Namadicus. 
same skull as figured in Pl. XII. A. 
Three different views of 
The molars are less perfect than 
Memorandum upon the Nerbudda Fossil Elephant—continued. 
Measurements of the sixth or last | Plephas 
True Grinder an 
dicus 
Inches 
Width or thickness of the 
lyory core, eighth plate, 
one inch above the base 0.55 
Width or thickness of the 
ivory core, eleventh plate, 
one inch above the base 0°5 
Average thickness of enamel 
plates : : : 0:2 
Height of enamel plate, 
tenth ridge. 75 
Greatest width of tooth, at 
fourth plate. 5 . 
Corse’s 
Assam, large Hlephe s Elephas 
recent specimen ane primigen. 
Brit. Mus. 
Inches Tnches Inches Inches 
0:2 0°35 
0:2 0°25 Ee 
Ol 600 0715 
74 as 4:8 6:2 
paG 30 3°5 An 
The specimen is upper jaw, right side, 
with the last grinder of which the eleven 
anterior plates remain; there must have 
been several more behind, from the great 
height of the last plate. On comparing 
the section with that of the #. Hysu- 
dricus and existing Indian species, it is 
at once seen to differ from the former in 
the extreme height of the plates, from 
their slight amount of thinning upwards 
and their nearly vertical direction. They 
are as straight and vertical as in the 
Mammoth. There is besides no loop 
about the middle of the tooth plates, in 
the enamel and comparatively thin 
crusta. It is assuredly different from 
the E. Hysudricus. Compared with 
the existing species, the ivory is very 
much thicker, with no curve towards the 
apex; the enamel plates are very much 
thicker also. The crown of the plates 
resembles very much the last tooth of 
Corse’s big head in the transverse di- 
rection of the plate ribands, and in the 
excessive amount of crimping or fine 
plaiting of the enamel. From the 
measurement given it will be seen, 
however, that the enamel and ivory in 
thickness indicate a wide difference, 
which is further borne out by the ver- 
ticality of the plates. Having seen 
nothing among the existing teeth of a 
range of difference at all approaching 
this, I am compelled to consider the 
species, as far as my present information 
goes, as distinct. There is no possibility 
of considering it a variety of L. Hysu- 
dricus. I call it therefore provisionally 
Elephas Namadicus (from the Greek 
name of the Nerbudda ‘Namadus’). It 
was found along with Hippopotamus, 
Buffalo, &e., in the Nerbudda. There 
must have been at least nine or ten 
plates more, and it would rank in place 
between the existing Indian elephant 
and the E. Hysudricus-- 
Thus, L. primigenius, 
E. Indicus, 
FE). Namadicus, 
E. Hysudricus, 
E. planifrons, &c. 
The inferred distinctness of species 
is further borne out by the excessive 
width of palate in the other Nerbudda 
specimen, seven inches behind. The 
Perim species is probably the same. 
N.B.——Prinsep, in the Journal of the 
Asiat. Society of Bengal, vol. iii. p. 585, 
describes and figures the lower jaw, one 
side nearly entire, ofa fossil Elephant from 
the Nerbudda, which he states to be so 
like the existing Asiatie Elephant, judg- 
ing from a comparison with a jaw in the 
Caleutta Museum, that it was impos- 
sible to distinguish them, although it 
may be confidently distinguished from 
the E. primigenius. The figure shows 
about fifteen or sixteen plates in wear, 
and at least seven more behind, or 
twenty-three to twenty-four in all. The 
rami, however, as sketched by Prinsep; 
are much more apart than in the Asiatic 
species generally. Dimensions: length, 
113 in., width in the middle, 33 in.; 
transverse diameter of jaw at coronoid 
dise, 6 in., and girth of jaw in front of 
coronoid, 24 in. 
This in all probability belongs to the 
Elephas Namadicus, as also the prodigi- 
ously large humerus at the India House. 
