12 FAUNA ANTIQUA SIVALENSIS. 
and enamel very thick; ridges very low; resembles Plate XVIII. A. 
fig. 1.—B.M. 
Fig. 10.—E. planifrons. Lower (upper in MS.) jaw, left side, with 
penultimate and last molar. The whole of the penultimate much worn ; 
the two front ridges worn out; has eight ridges and a very small heel. 
The tooth is very broad for its length; has a great abundance of 
cement; the enamel is very thick; figured for the remarkable fact of 
there being no crimping whatever, only a little flexuosity, and no 
mesial expansion. Last tooth is quite untouched by wear.—B.M. 
Length of penultimate, 7° in. Width of ditto behind, 3-7 in. Length of first 
five ridges of last tooth, 56 in. Width at third plate, 3°7 in. Height of fifth 
plate unworn, 3°8 in. 
IB eGt) DIOL 
Figs. 1 and 1 a.—Hlephas planifrons. Antepenultimate milk molar 
of upper jaw, with four ridges; drawn of natural size. Fig. 1 6 shows 
a vertical section of same tooth. 
Fig. 2.—E. planifrons. Section of second milk molar, upper jaw, right 
side. It has six main ridges, and back talon and front heel. The four 
front ridges are touched by wear; great quantity of cement and thick 
enamel. Resembles the third milk molar in Plate VI. figs. 4 and 5,—B.M. 
Length, 3°8 in. Greatest width, 2°3 in. 
Fig. 5.—(None in the plate). 
Figs. 4 and 4 a.—H. planifrons. First true molar, upper jaw, much 
worn, showing five ridges and a heel remaining ; two ridges probably 
gone.—B.M. 
Length, 5-2 in. Width, 2°8 in. 
Fig. 5.—E. planifrons. Fragment of upper jaw with first and penul- 
timate true molar. The first molar is that numbered as fig. 4. The 
penultimate has eight ridges and a front heel. The specimen is broken 
behind, but the artist in the drawing has repaired the eighth ridge 
and added a little. Another first true molar in Plate VI. fig. 5 (See 
also note 2, page 7). 
Length of penultimate, 8°in. Width, 3: in. 
Fig. 5 a.—L. planifrons. Is a distinct specimen from fig. 5. It is a 
most valuable palate specimen, showing entire the penultimate or second 
true molar on either side. On the left side the cavity for the last molar 
is seen. The penultimate has eight distinct ridges and a front and 
back heel; all the ridges are more or less worn; the points are few and 
large, and the enamel thick. Has all the characteristic marks of £. 
planifrons. Specimen in Mr. W. Ewer’s collection. 
Length of left molar, 7°5 in. Width in front at third plate. 3:2 in. Width at 
last or eighth ridge, 2°6 in. Interval between teeth in front, 38°2 in. Inter- 
val behind, 5-4 in. 
Figs. 6 and 6 a.—£. planifrons. Penultimate true molar zn situ in 
upper jaw of a large animal. Tooth has eight main ridges. 
Figs. 7 and 7 a.—E. planifrons. This is a beautiful little spe- 
cimen of right side of lower jaw, containing the second milk molar. 
It shows a very small front splent, with six main ridges and a small 
heel limited to the inner two-thirds of the width of the last plate. Has 
exactly the same number of ridges as the corresponding tooth in young 
African Elephant (six main plates), but is a larger and broader tooth. 
