DESCRIPTION OF PLATES. 33 



very divergent rami behind ; diastemal edges very sharp ; two onter 

 mentary foramina on right side. The front tooth much worn ; has five 

 ridges and a heel; the last tooth has eight ridges. Nothing else like 

 this in the collection. — B.M. 



Extreme length of jaw, 18 - 5 in. Height at alveolus, 8'5 in. "Width of jaw in 

 front, 4 - in. Width of jaw behind, 5 - 8 in. ! Length of front tooth 5 - l in. Width, 

 ■2-7 in. Length of last tooth, 9"3 in. Width, 3-2 in. 



Figs. 2 and 2 a. — Elephas Ganesa. Portion of lower jaw with left 

 penidtirnate lower molar. The jaw in this specimen is also very high 

 and narrow in front, and low behind. The tooth has seven ridges 

 and a heel. Behind it is seen a portion of the last molar. — B.M. 



Length of fragment, 14 - 5 in. Height at alveolus, 8'3 in. Height behind, 5"8 in. 

 Width in front, 3 - 3 in. Width behind, 6 - 6 in. Length of molar, 9 - 2 in. Width at 

 back, 3" in. 



Fig. 8. — Elephas insignis. Fine specimen of lower jaw, including 

 ascending ramus. Two outer mentary foramina. Second and third ? 

 true molars. 



Figs. 4 and -4 a. — E. insignis. Fragment of anterior portion of lower 

 jaAv. Is the only specimen that shows a beak entire to the tip. Is 

 very like the large specimen containing a molar with great number of 

 plates {Vide Plate XVIII. A. fig. 3).— B.M. 



Figs. 5 and 5 a. — E. insignis. Fragment of lower jaw with last 

 molar, imperfect. The latter has eight plates remaining ; seven denticles 

 to the second (distinct) ridge. 



Length of fragment, 16" in. Length of eight plates of last molar, 8 - l in. Width 

 in front, 3-1 in. W T idth behind, 3-5 in. 



Fig. 6. — E. insignis ? Fragment of lower jaw with second (third?) 

 true molar. The plates show seven to eight points. This is the 

 specimen described by Gift in the Geological Transactions. It is very 

 like E. insignis. It is also represented in Plate XX. figs. 6 and 6 a. — 

 Geol. Soc. Museum. 



Length of fragment, 19 - in. Height at alveolus, 6'6 in. Length of molar, 12' in. 

 Width in front, 3 - 2in. Width in the middle, 3 - 6 in. Length of fragment of 

 anterior tooth, 4-2 in. Width, 25 in. 



Figs. 7 and 7 a. — E. insignis. Fragment of lower jaw, right side, 

 with first true molar nearly worn out, and six ridges of second molar. 

 The plates are very high and there is much cement. The teeth are 

 very broad in relation to the jaw, as compared with E. Ganesa in fig. 1. 

 This is a beautifid specimen from Baker's collection. — B.M. 



Length, 14-7 in. Height, 77 in. Width in front, 3v5 in. Width behind, 6"7 in. 

 Length of front molar, 4-6 in. Width, 27 in. Length of back fragment, 5*3 in. 

 Width, 3 in. 



Plate XXI. 



Elephas Ganesa (Falc. and Caut.). From the Sewalik hills, in Colonel 

 Baker's collection. Large skull, with fragment of left incisive in situ, 

 and corresponding fragment of right incisive detached. The incisive 

 alveoli are remarkably elongated, as in E. primigenius. The plane of 

 the incisives is continuous with that of the frontal, but with a tendency 

 to obliquity forwards. The skull is very imperfect on right side. PI. 

 XXI. gives a front view one-fifth of the natural size, and PL XXII. figs. 1 

 and 2, give a lateral and palate view of the same skull. Compare with 

 skull of E. insignis, PI. XV. — B.M. The dimensions are as- follows : — 



