DESCRIPTION OF PLATES. 87 
palatine, and lateral views. The left zygomatic arch is almost complete; 
the right is absent. The molars, premolars, and right canine are well 
seen ; the incisor ridge is mutilated. ‘The molar ridges are parallel ; 
the whole jaw tapers forward, and there is no widening of its anterior 
extremity, and no abrupt angle between the line of the jaw and the 
zygomatic arch.—B.M. 
Fig. 6.—M. dissimilis (var.minor?). Lower jaw, right side, com- 
prising the horizontal and part of the ascending ramus, with the ex- 
panded disc below. The three molars are in situ. The premolars 
have dropped out, but their alveoli are seen. The canine is also in 
situ, but broken off. The molars in the original exhibit well the rugous 
surface of the enamel, with the basal cingulum and the ruminant-like 
pattern of wear on the crown which are characteristic of the genus, 
which is nearly allied to Anthracotherium in the teeth. The colline 
apices of the molars are more widely separated than in other Hippo- 
potami. The specimen from which this figure is taken is in the 
Museum of the Asiatic Society at Calcutta (Sewalik series, No. 246), 
and is described by Dr. Falconer in the Catalogue of the Museum. 
—Cast in B.M. 
Figs. 7, 7 a, and 7 b.—M. dissimilis (Var. minor ?). Fragment of lower 
jaw, right side, with molars and premolars in situ. The alveoli of the 
canine and three incisors are seen in the broken surface in front. The 
ascending ramus and descending process are broken off. The large 
mentary foramen and deep channel in front are very distinct.—B.M. 
Figs. 8 and 8 a.—WM. dissimilis. Fragment of anterior portion of lower 
jaw, left side, with very perfect canine. 
Piate LXVIII. 
Figs. 1 to 18.—Merycopotamus dissimilis. 
Figs. 1 and 2.—Two fragments of pelvis with acetabulum; two 
views of each.—B.M. 
Figs. 3, 38a, and 3 b.—Upper end of right femur.—B.M. 
Figs. 4, 4a, 4b, and 4 c.—Lower end of femur.—B.M. 
Figs. 5, 5 a, and 5 b.—Upper end of tibia. —B.M. 
Figs. 6, 6a, 6 5, and 6 c.—Fragment of caleaneum.—B.M. 
Figs. 7, 7a, 7b, 7c, and-7 d.—Calcaneum.—B.M. 
Figs. 8, 8a, 8 b, and 8 c.—Calcaneum.—B.M. 
Figs. 9, 9a, 9b, 9c, and 9 d.— Astragalus. —B.M. 
Fig. 10.—Calcaneum and astragalus in situ.. 
Figs. 11 and 12.—T wo specimens of upper end of humerus; three 
views.—B.M. 
Figs. 13, 13 a, 13 b, 13 ¢c, and 13 d.—Lower end of humerus.—B.M. 
Figs. 14, 14 a, 146, and 14 c.—Four different views of radius of 
Merycopotamus dissimilis—B.M. 
Fig. 15.—Fragment of occiput, showing condyles and occipital crest. 
—B.M. 
Fig. 16.—Fragment of lower jaw. 
