278 PROBOSCIDIA. 
angustidens from Eppelsheim, figured in tab. xvin. of the 
great work by Dr. Kaup on the Mammalian Fossils of 
that locality. To place the source and matrix of Mr. 
Smith’s fossil beyond doubt, I applied to Mr. R. Fitch, 
of Norwich, for the loan of his specimens of the molars 
of a Mastodon angustidens from the crag-pits near that 
city, and took the largest specimen to the British Museum 
for comparison with the tooth in question. The identity 
of structure and colour between the two fossils was com- 
plete ; the dentine in both had the same rich brown tint, 
brittle texture, and superficial ferrugimous stain; both 
belonged to the same species of Mastodon, and alike mani- 
fested the well-known characters of crag fossils. 
The crown of the molar from Mr. Smith’s collection 
measures seven inches in length, three inches in breadth 
across its base, and the height of the highest unworn 
mamumilla is two inches and a half; the crown is di- 
vided into five pairs of mastoid eminences and a strong 
tuberculated pesterior ridge, or talon; resembling, in this 
respect, that of the molars above cited from Cuvier, and the 
figures 6, 7, and 8* of tab. xviii. of Dr. Kaup ; and showing 
a greater complexity than do the more simple varieties 
of the last molar of the Mastodon angustidens, represented 
in figures 1, 2, and 3 of the same plate. The mastoid 
eminences have a subalternate disposition, and the smaller 
connecting eminence, which rises from the middle of each 
transverse valley, is well developed: the summits of the 
larger processes are more or less subdivided; but this cha- 
racter is best seen in the unworn teeth. The summits 
of the first, second, and third pairs of mammille have 
* ‘These are all referred by Dr. Kaup to his Mastodon longirostris, who, never- 
theless, distinguishes that nominal species from the Mastodon angustidens of Cuvier 
by a more complex last molar tooth. ¥ 
