DESCEIPTION OP PLATES. 



437 



in the corresponding specimen in the Museum of the Asiatic Society 

 of Bengal (See antea, p. 115). — B M. 



Fig- 4:.—Elephas Hysudricus. This fragment of skull, which is 

 probably female, and is but very slightly concave on the forehead, 

 yields very few good measurements. The figure is chiefly given for 

 the form. It has two small tusk sheaths; the tusks are broken off 

 near the base of the nucleus, and show only a thin plate. Only one 

 orbital foramen, very large. This specimen is very remarkable in 

 the molars having so few plates, only eight to the first true molar and 

 no heel. — B.M. 



Length of penultimate molar, 5-2 in. ; -B-idth, 2-3 in. The penultimate entirely 

 in germ shows eleven plates. Extreme length of the fragment, 28-5 in. Length 

 from occiput to tip of nasals, 18'0 in. ; width of nasal opening, 12-5 in. ; width of 

 brow across orbits, 21-6 in. Interval between the teeth in front, 2-1 in. ; interval 

 at niche of palate, 3-8 in. ; diameter of the right tusk, 2-5 in. 



Plate XII. C. 



Figs. 1 and 1 a. — Elephas Namadicus. A small fragment of lower 

 jaw, with three plates of what is probably the first true molar. B.M. 



Figs. 2 and 2 a. — Elephas Namadicus. Lower jaw, left side. This 

 specimen contains the third milk molar well worn and the first true 

 molar in germ. — B.M. 



Extreme length, 12-5 in. Height at alveolus, 4-1. Thickness of jaw behind, 

 4-0 in. Length of anterior molar, 6-2 in.; width, 1-8 in. Number of plates 

 remaining, 7. 



Figs. 3 and 3 a. — E. Namadicus. Yotmg lower jaw, right side, with 

 third milk molar, which has ten ridges and a heel. The crimped 

 character of Elephas antiquus^ is well shown. A small vertebra is 

 attached to the ramus. — B.M. 



Length of fragment, 11 -0 in. Height at alveolus, 4'8 in. Thickness behind, 

 4'0 in. Length of third milk molar, 5-5 in.; width, 1-9 in. 



Figs. 4 and 4 a. — E. Namadicus. Eight lower jaw of adult, con- 

 taining last molar with twenty plates and a heel. The specimen shows 

 two mentary ibramina. The broken coronoid portion of the ramus 

 shelves more out than in E. antiquus,'^ and the mentary foramina are 

 placed higher. Presented by C. Frazer, Esq. — B.M. 



Extreme length of fragment, 23-6 in. Height at alveolus, 9-2 in. Length of 

 the molar partly concealed and chiselled, 14'7 ; width, 3'11 in. Width of law 

 behind, 8'0 in. 



Figs. 5 and 5 a. — E. Namadicus. Adult lower jaw of large size. 

 The specimen does not show the beak distinctly, and is more obtuse 

 there than in E. antiquus.^ The number of outer mentary holes is 

 uncertain, as in E. antiquus * there is no inner hole. Presented by 

 C. Frazer, Esq., and described in Journ. Asiat. Soc. — B.M. 



Extreme length, right side, 20-5 in. Expansion of rami, 24- in. Height of jaw at 

 beginning of alveolus, 10- in. Length of right molar, 14- in. Width, 37 in. Number 

 of plates remaining about 15. Greatest width of jaw, 8'1 in. 



' ' Elephas meridionalis' in original 

 notes, written about 1846. The close 

 resemblance of the E, Namadicus from 

 the Nerbudda to the E. antiquus of the 

 oyster beds of Norfolk coast, in Eng- 



land, is dwelt on in the memoir on 

 Elephants, in vol. ii. See also note, p. 443. 



'^ See last note. 



' See note 1. 



'' See note 1. - 



