DESCRIPTION OF PLATES. 457 



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, but is imperfect in front ; enamel very much crimjDed ( Vide 

 Plate XXV. A. fig. 2).— B.M. 



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

 4-1 in. Thickness behind, 6-3 in. Length of right molar, 8'9 in. Width at 

 middle, 47 in. 



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

 Sewalik hills. Fragment of lower jaw, showing the iinited 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, 6'1 in. 



Figs. 3 and 3 a. — E. homhifrons. 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, 83 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, 6'8 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 1 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. Oanesa. 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. 



Figs. 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, 1 8-4 in. Height to alveolus, 6- in. Height at front tooth, 

 2' 5 in. Height behind, 4' in. Length of ramus (antero-post.), 8"7 in. Length 

 of front tooth, 2'5 in. Length of second tooth, 6'2 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. 



