DESCEIPTION OF PLATES. 497 



Figs. 11 and 11 a. — Ele.phas insignis. Fragment of molar, remark- 

 able as coming from the Valley of the Nerbudda. — B.M. 



Length of fragment of grinding surface, 2'5 in. Breadtli of tooth at centre of 

 that fragment, 3' in. 



Figs. 12 and 12 a — Elephas ? Fragment of molar containing 



about nine plates ; from the Nerbudda. — B.M. 



Length, 5-2 in. Breadth, 2-3 in. 



Figs. 13 and 13 a. — Elephas ? Fragment of lower jaw, con- 

 taining portion of molar with about seven plates ; from the Nerbudda. 

 —B.M. 



Length of fragment of jaw, 11 -3 in. Greatest breadth of ditto, 5'2 in. Height 

 opposite posterior border of molar, 4-5 in. Length of tooth, 6-5 in. Greatest 

 breadth of ditto, 2'7 in. 



Figs. 14, 14 a, and 14 5. — Elephas ? Fragment of molar with 



six plates ; from the Nerbudda. — B.M. 



Length, 6-4 in. Breadth, 4'1 in. 



Plate LVII. 



Fig. 1. — Hippopotamus {Tetraprotodon) Palceindicus. (Falc. and 

 Caut.) Almost entire skull, viewed from above, with zygomatic arches 

 complete. Specimen from the Nerbudda in B.M. It shows well the 

 great saliency of the sagittal crest. There is a finer specimen in the 

 Museum of the Asiatic Society of Bengal (See antea, p. 147). 



Fig. 1 a. — Lateral view of same skull, showing cavity of orbit, &c. 

 The great jDrojection of the orbit above the plane of the frontal, charac- 

 teristic of the species, is well seen. 



Fig. 1 b. — Same skull, palatine view, showing three molars, the fur- 

 thest back intact, the two next groi;nd down ; also the three premolars 

 on one side, and two on the other. 



Fig. 1 c. — Occipital view of same skull, showing condyles and 

 foramen magnum, and the great saliency of the occipital crest. 



Figs. 2 and 2 a. — H. Palceindicus. Portion of upper jaw, right side, 

 with three molars. — B.M. 



Figs. 3 and 3 a. — H. Palceindicus. Portion of lower jaw, with 

 teeth.— B.M. 



Fig. 4. — H. Palceindicus. Fragment of canine. — B.M. 



Figs. 5 and 5 a. — H. Palceindicus. Anterior portion of jaw with 

 alveoli of foiw incisors. The diameter of the alveoli of the central in- 

 cisors is much less than that of the external incisors — a fact which 

 refutes De Blainville's opinion that the Nerbudda Tetaprotodon is- 

 identical with the living African species. In the latter the middle in- 

 cisors are the largest. 



Figs. 6 and 6 a. — H. Palceindicus. Portion of lower jaw, with 

 grinders (three molars and two premolars) worn down. — B.M. 



Figs. 7 and 7 a. — H. Palceindicus. Portion of lower jaw, with 

 two molars. — B.M. 



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