DESCRIPTION OF PLATES. 131 
Figs. 5 and 5 a.—Drepanodon Stvalensis. Fragment of upper jaw, 
containing two anterior molars. ‘The first is simple, singled-fanged 
and very small, The second is the carnassial or sectorial tooth. Its 
crown is more compressed, its trenchant margins sharp. See descrip- 
tion of fig. 4. —B.M. No. 39,730. 
Figs. 6 and 6 a—Drepanodon Sivalensis. Lower jaw, right side, 
more perfect than fig. 4, and containing the incisors as well as the 
canine and three molars. ‘The downward projection of the symphysis, 
and the depression for the upper canine, are well seen.—B.M. No. 
16,573. 
Figs. 7 and 7a.—Drepanodon Sivalensis. Another specimen of 
lower jaw, right side, containing three molars and alveolus of large 
canine.—B.M. No. 16,537. 
Figs. 8 and 8 a.—Drepanodon Sivalensis. Fragment of lower jaw, 
with three molars.—B.M., No. 16,554. 
Prarn ©: 
Ursus (Hyenarctos) Sivalensis (Fale. and Caut.), from the Sewalik 
hills. The fossil Bear of the Sewalik hills forms the subject of a dis- 
tinct memoir (‘ Asiatic Researches,’ vol. xix.). Its chief peculiarities 
are to be found in the teeth, which are constructed more after the 
type of the higher Carnivora than any other described species of the 
genus. . 
Figs. 1, 1 a, 1 6, and 1 c.—Superb specimen of cranium. The three 
rear molars are perfect on one side, and but little damaged on the other. 
Both canines are present, and that of the right side is enfire. The 
alveoli of the two false molars and three incisors on either side are dis- 
tinct, although the teeth are wanting. The only considerable deficien- 
cies are in the posterior and lower parts of the occiput, both zygomatic 
arches, and in the lower end of the nasals, where a fissure extends 
across the face, on both sides towards the orbits. Fig. 1 a shows the 
dental series on right side, of natural size. 
This specimen is described in detail in the memoir already referred 
to, in the ‘ Asiatic Researches,’ vol. xix.—B.M. No. 39,721. 
Figs. 2 and 2 a.—Ursus Sivalensis. Greater part of the body of the 
lower jaw, broken off where the canine protrudes, and also deficient in 
the coronoid and articulating processes. There are indications of six 
molars, of which the two first premolars and the rear tubercular molar 
have dropped out. The third premolar is distinctly three-lobed. ‘The 
antepenultimate or carnassier is chiefly remarkable for its length. The 
penultimate or first tubercular is broader for its length and less com- 
plicated with tubercles than what is general in the genus. Fig. 2a 
shows the dental series of the natural size. 
Further details of this specimen are given in the memoir on Ursus 
above referred to.—B.M. No. 59,722. 
Figs. 3, 3. a, 3b, 8c, and 3d.—Ursus Sivalensis. Second cervical 
vertebra or axis.—B.M. No. 37,143, 
