DESCRIPTION OF PLATES. 15 
The first three plates are worn. The specimen also shows at b the 
fang-holes of the first milk molar.—B.M. 
Length, 6:2. Height to alveolar margin in front, 3:2 in. Ditto behind, 2°7 in, 
Greatest thickness, 2°6 in. Length of second milk molar, 2°4 in. Greatest width 
of crown at fourth ridge, 1:4 in. 
Figs. 8 and 8 a. Hlephas planifrons.—Left side of lower jaw. 
This is a superb specimen. It displays three teeth in situ, viz. in the 
posterior extremity the last milk molar ; in front of it the penultimate 
milk molar (0), nearly worn out, and emerging from below the latter a 
small vertically succeeding premolar (c). The third or last milk molar 
has seven main ridges, with a double front heel and a small splent 
behind ; the four front ridges are worn; it is broader behind than in 
front; the reverse in the upper.—B.M. 
Length of last molar, 4:4 in. Width at second ridge, 1-8 in. Width behind 
(greatest), 2-4 in. Length of small premolar, 1: in. Width behind, -8 in.; does 
not show the ridges. 
Fig. 9.—Elephas planifrons. Shows at ¢ the penultimate premolar. 
It is considerably smaller in all its dimensions than the antepenulti- 
mate milk molar (fig. 1 a), drawn to the same scale. It is of a roundish 
form, and shows no distinct indication of ridge-divisions. It was, 
therefore, of small importance, functionally, in the economy of the 
species. 
Figs. 10 and 10 a.—Elephas planifrons. This is an invaluable 
specimen. Proved by its size and development to be the first true 
molar, lower jaw, left. Shows seven main ridges and a small ridge in 
front; no heel behind, or only a very small one; is broader behind 
than in front; the five first ridges are worn; enamel very thick with 
mesial expansion ; few points to the plates; much cement. The most 
interesting point is the third premolar (d) in front zn situ. The back 
part of it only seen; it had not protruded through the jaw. Shows a 
last plate of three points and a small heel.—B.M. 
Length of fragment of jaw, 8°in. Height to alveolar margin, 5-9 in.; greatest 
width, 4-4 in.; greatest height to crown behind, 6°8 in. Length of the first true 
molar, 6°7 in.; width in front, 2°3 in.; greatest width behind at fourth-ridge, 
2°6 in. Length of premolar fragment, 1‘in.; height of crown, 1°5 in.; width, 1: in. 
Fig. 11—Elephas planifrons. Last premolar (6) vertically divided 
through the middle, the anterior portion being wanting. Although 
partly emerged, it is still embedded in the alveolus and intact, while 
the tooth behind it is well worn. It is of comparatively small size, 
but presents distinct indications of two transverse ridges terminating in 
the thick digitations characteristic of the species. This figure refers to 
the same specimen as fig. 10, but is drawn on a larger scale. 
Figs. 12 and 12 a.—Elephas planifrons. This appears to be the last 
true molar, lower jaw, right side; has ten main plates, with a front 
plate and heel; is apparently of a small sized individual; has the 
enamel straighter in the bend than usual; ridges low.—B.M. 
Length, 10°in. Width in front, 3°5 in.; ditto behind, 2°9 in. Height of crown 
at seventh plate, 4° in. 
Fig. 13.—EHlephas planifrons. ower jaw, left side, with last true 
molar entire; crown not figured; very thick enamel plates reclined ; 
considerable mesial expansion; points in the back plates few; in the 
front plates a good deal of crimping; shows about thirteen ridges and a 
B 
