88 FAUNA ANTIQUA SIVALENSIS. 
Figs. 17 and 17 a.—Lower jaw, anterior portion, both sides, showing 
absence of any widening of symphysis.—B.M. 
Figs. 18 and 18 a.—Incisive ridge.—B.M. 
Figs. 19, 19a, 196, and 19 c.—Hipp. Sivalensis. Calcaneum.—B.M. 
Figs. 20, 20 a, and 20 b.—Hipp. Sivalensis. Astragalus. —B.M. 
Fig. 21.—Hipp. Sivalensis. Calecaneum and astragalus, placed in 
situ. 
Figs. 22 and 22 a.—Anthracotherium Silistrense. Molars in Museum 
Geol. Soc. 
Figs. 23 and 23 a.—Anthracotherium Silistrense. Molars in Museum 
Geol. Soc. 
Fig. 24.—Anthracotherium Velaunum. Molars in Mus. Geol. Soc. 
Fig. 25.—Anthracotherium Velaunum. Molars in Mus. Geol. Soc. 
The Anthracotherium, like the closely allied Merycopotamus, formed 
a link connecting the Hippopotamus with the Ruminants. The molars, 
however, depart less from the Hippopotamic type than in Meryco- 
potamus.* 
PuLatTe LXIX. 
Figs. 1, la, 16, and 1 e.—Sus giganteus (Fale. and Caut.). Upper, 
palatal, lateral, and occipital views of skull. The zygomatic arches 
are perfect. There are three molars on either side, and also the last 
premolar. The specimen is broken off in front of the last premolar. 
‘The extreme distance between the zygomata is much greater than in 
Sus scrofa. The sub-orbital foramina are large, and the bone is deeply 
channelled in front. From the Sewalik hills.—B.M. 
Length of fragment, 11‘7 in. Between the most distant points of the zygomata, 
8°5 in. Between the post-orbital processes, 5'1in. Least breadth of cranium 
between temporal fosse, 1:-lin. Height of occipital facet from lower border of 
occipital foramen, 6°5in. Height of occipital foramen, -9in. Breadth of ditto, 
l-in. Breadth of occipital condyle, 1:3in. From lower border of occipital foramen 
to posterior border of palate, 3°8in. Height of cranium at sub-orbital foramen 
from palate, 3:1in. Breadth of ditto superiorly, 2°4in. Least breadth of occipital 
facet, 3°5in. Width of posterior nares, *7in. Length of three true molars, 3:2 in. 
Of ditto, including last premolar, 3°7in. Width of palate, posteriorly, 1:7in. Of 
ditto, anteriorly, 1-5in. Greatest breadth of alveoli, 1-3in. Height of posterior 
nares, 1‘7in. Greatest diameter of orbit, 1-7 in. 
Figs. 2, 2a, and 2 b.—Sus giganteus. Fragment showing anterior 
portion of skull broken off about the line of the sub-orbital foramina. 
Upper, lateral, and palatine views. The three molars and two last pre- 
molars are well seen, and are less ground than in fig. 1.—B.M. 
Length of fragment, 9°in. Width superiorly at sub-orbital foramen, 2°2 in. 
Height, from palate, 4:in. Length of three true molars, 3°7in. Of ditto, including 
two last premolars, 5-1 in. Width of palate posteriorly, 1-6 in. Of ditto, anteriorly, 
1:4in. Greatest width of alveoli, 1:3 in. 
1 Dr. F. was at one time inclined to | rium Velaunum; that is to say, he mis- 
regard the Merycopotamus as identical | named his specimen from imperfect ma- 
in genus with the Anthracotherium Ve- | terials. I havehadthe twoheadschiselled 
launum of Cuvier. On Dec. 6, 1848, he | out,and intend describing them underthe 
wrote thus to Capt. Cautley: ‘What do | name of a new genus Merycopotamus 
you think! Our Hippo. dissimilis is iden- | (merico, from the resemblance of the 
tical in genus with Cuvier’s Anthracothe- | teeth to those of a Ruminant).’ 
