DESCRIPTION OF PLATES. 507 



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 betAveen the line of the jaw and the 

 zygomatic arch. — B.M. 



Fig. 6 M. dissimilis {y ax. minor 7). 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. 

 See antea, p. 146. — Cast in B.M. 



Figs. 7, 7 a, and 7 b. — (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 ascendinor 



O 



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. — M. dissimilis. Fragment of anterior portion of lower 

 jaw, left side, with very perfect canine, 



Plate 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, 3 a, and 3 b. — Upper end of right femur. — B.M. 



Figs. 4, 4 a, 4 b, and 4 c. — Lower end of femur. — B.M. 



Figs. 5, 5 rt, and 5 h. — Upper end of tibia. — B.M. 



Figs. 6, 6 a, 6 b, and 6 c. — Fragment of calcaneiim. — B.M. 



Figs. 7,7 a, 7 b, 7 c, and 7 d — Calcaneum.— B.M. 



Pigs. 8, 8 a, 8 b, and 8 c. — Calcaneum. — B.M. 



Figs. 9, 9 a, 9 S, 9 c, and 9 d. — Astragalus. — B.M. 



Fig. 10. — Calcaneum and astragalus in situ. 



Figs. 11 and 12. — Two 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, 14 b, 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. 



