DESCRIPTION OF PLATES. 37 



front at diasteme, and high with an edge ; ascending ramus is inclined 

 forward and does not shelve out. Molar has seven or eight ridges re- 

 maining, bin" is imperfect in front ; enamel very much crimped ( Vide 

 Plate XXV. A. fig. 2).— B.M. 



Extreme length of jaw, 19-3 in. Height to alveolus, 8" in. Thickness in front, 

 41 in. Thickness behind, 6 - 3 in. Length of right molar, S - 9 in. Width at 

 middle, 4-7 in. 



Figs. 2 and 2 a. — Elephas bombifrons (Falc. and Caut.). From the 

 Sewalik hills. Fragment of lower jaw, showing the united symphysis, 

 parallel rami, and three large mentary foramina on outside. Only a 

 fragment of last molar seen on both sides. — B.M. 



Extreme length, 17'3 in. Height to alveolus, 7"8 in. Width of jaw in front, 

 3*6 in. Width of jaw behind, 6 - l in. 



Figs. 3 and 3 a. — E. bombifrons. Magnificent specimen of lower 

 jaw ; fault in jaw ; two large mentary foramina ; beak very thick ; 

 right molar has nine ridges and a heel ; enamel very thick ; hardly any 

 cement. — B.M. 



Extreme length of jaw, 23 - 6 in. Height to alveolar margin, 9 - in. Thickness 

 in front, 4-2 in. Thickness behind, 8 - 3 in. Length of right molar, 12*9 in. 

 Greatest width at fifth ridge, 4-4 in. 



Figs. 4 and 4 a. — Elephas insignis. Lower jaw, partly distorted by 

 pressure, and containing two molars on either side. The anterior 

 (first true) molar is entire, though mutilated, and has seven ridges and 

 a large heel. The back (second) molar is fragmentary. — B.M. 



Extreme length of jaw, 15" in. Height to alveolus, 5"8 in. Thickness in front, 

 3*5 in. Thickness behind, 5'5 in. Length of front molar, left side, 6 - 5 in. Width 

 at middle, 2-5 in. 



Plate XXV. A. 

 Figs. 1 and J a. — Elephas Ganesa (Falc. and Caut.). Fragment of 

 lower jaw, thick behind, with last lower molar, showing seven ridges 

 and a heel, and great crimping, but no characteristic feature. — B.M. 

 Length of right molar, 8'8 in. Greatest width, 3 - 8 in. 

 Figs. 2 and 2 a.—E. Ganesa. Fragment of lower jaw, very old, 

 with last molar much worn. Eesembles Plate XXV. fig. 1. — B.M. 



Height of jaw at alveolus, 7'8 in. Length of right molar, 10 - 2 in. Width, 

 4- in. 



Figs. 3 and 3 a. — E. Ganesa. A dumpy, small-sized lower jaw, 

 with imperfect molar ; seven ridges remaining ; the back ridges curved 

 and much crimped. 



Length of molar, 8 - 4 in. Width behind, 3 - 8 in. Width in front, 3'4 in. 



Fig3. 4 and 4 a. — E. Ganesa. This little lower jaw is very remark- 

 able in being high and narrow ; the ascending ramus is much bent 

 forward. It contains three teeth, one in front worn out ; a second with 

 seven ridges and a heel, and a third in germ. — B.M. 



Extreme length of jaw, 18'4 in. Height to alveolus, 6- in. Height at front tooth, 

 in. Height behind, 4 - in. Length of ramus (antero-post.), 8 - 7 in. Length 

 of front tooth, 2-5 in. Length of second tooth, 5'2 in. ; width in front, 2 - in. ; 

 width behind, 2-3 in. 



Figs. 5 and 5 a. — E. Ganesa. Angle of lower jaw, left side, with 

 portions of ascending and horizontal rami, and posterior five and a half 

 ridges of last true molar. — B.M. 



Length of fragment of molar, 7' in. Width, 3 - 9. in, 



