DESCRIPTION OF PLATES. 41 
side, showing third milk molar with 5 ridges and an anterior and 
posterior talon. The three anterior ridges are worn into a common 
disc. 
Length, 3°6in. Width in front, 1-4in. Width behind, 1-8 in. 
Figs. 6 and 6 a.—Elephas bombifrons. Fragment of lower jaw, right 
side, ‘with the antepenultimate or first true molar, presenting 7 ridges 
and a heel.—B.M. 
Length of molar, 5:9 in. 
ridge, 2°7 in. 
Figs. 7 and 7 a.—E. bombifrons. Last molar, lower jaw, left side, 
presenting 9 ridges and a heel; 3 front ridges abraded. ss M. 
13'4in. Extreme breadth of crown, 4:21 Breadth at 
Breadth of grinding surface, 3-2 in. Hthais height, 
Width in front, 2°lin. Width at antepenultimate 
Extreme length, 
posterior ridge, 3°2 in. 
6-4 in. 
Figs. 8 and 8 a.—Elephas insignis. Fragment of lower jaw, right 
side, with portions of penultimate and last true molars. Shows 4 ridges 
and a large posterior talon of penultimate, and 3 ridges and anterior 
talon of last molar. Two large outer mentary foramina.—B.M. 
Length of grinding surface of penultimate, 6°3in. Extreme breadth posteriorly, 
37 in, Breadth across anterior ridge, 3°2 in. 
PLATE XXX. 
Figs. 1 and 1 a.—Elephas Cliftii! (Fale. and Caut.). Mastodon 
E lephantoides of Clift. Palate, with third upper milk molar, and the 
three anterior ridges of the antepenultimate or first true molar? The 
third milk molar is entire on one side, but worn down to the common 
base of ivory, so that the divisions of the crown have entirely dis- 
appeared, leaving no certain data for determining the ridge formula. 
Behind it the three anterior ridges of the antepenultimate true molar 
are seen 7n situ, the posterior half being broken off. The plane of the 
palate, on to the diasteme, is very flat. The mesial line of division of 
the ridges in first true molar is not very distinct. This very interest- 
ing specimen was brought from Ava by Colonel Burney, and presented 
to the British Museum. 
Extreme leneth of fragment, 10°6 in. Length of anterior tooth, 3:3 in. Width, 
2°in. Length of second tooth, 3:in. Width, 3-4 in. Interval between teeth in 
front, 3°2 in. 
Figs. 2 and 2 a.—E, Cliftii. This is the first or antepenultimate 
E. (Stegodon) Cliftii; and the lower jaw 
specimen, Plate xxxyili. fig. 2 (also MV. 
Elephantotdes, Clift), is referred to EF. 
Stegodon) insignis. The specimens re- 
1 Mr. Clift, in his excellent memoir, 
includes the Ava fossil Proboscideans 
under two species, Mastodon latidens 
and Mastodon Elephantoides. In the 
‘Fauna Antiqua Sivalensis, the for- 
mer name is retained for the speci- 
mens of the Tetralophodon type, figured 
by Mr. Clift in the Geol. Trans., vol. ii. 
2nd ser., Plate xxxvii. figs. 1 and 4; 
Plate xxxviii. fig. 1; and Plate xxxix. 
figs. 1, 2, and 8. Of the others, the pa- 
late specimen, Plate xxxyvi. (Mastodon 
latidens, Clift), together with the de- 
tached molar, Plate xxxyiii. fig. 6 (Masto- 
don Elephantotdes, Clift), are referred to 
garded by him as of his MZ. Hlephantotdes 
being here considered to belong more 
properly to the genus E/ephas, it became 
necessary to resort to another specific 
designation. Hence the origin of £. 
(Stegodon) insignis.—H.F. 
? Inthe Museum of the Royal College 
of Surgeons (Cat. No. 664) is another 
fine palate specimen of £, Cliftii with 
the penultimate and last true molars on 
both sides. 
