422 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Apr. 13, 
in the apparent quantity of coronal cement (ib. fig. 2 ¢) as well as 
in the evidence of a hinder talon (ib. fig. 3 ¢), they are more like 
St. msignis than St. Clift. Yet the two hinder ridges, with the 
terminal talon of the tooth (ib. figs. 3 & 4), which, in breadth, cor- 
responds with the second upper deciduous molar of Sé. imsignis and 
St. sinensis, clearly differ from both. The last two ridges run 
straighter across, are of the same extent, and are divided by more 
numerous vertical grooves into smaller and correspondingly numerous 
apical mamille. The second of these ridges is cleft in the middle. 
From the alleged conditions of discovery, and the little-altered 
condition of the above-described portions of proboscidian molars, 
one would be led to deem them to be of as comparatively recent 
geological age as our ordinary British Cave-fossils. The section, 
however, of Proboscidia to which they indubitably belong has not 
hitherto been known to be represented by fossils of later age than 
of an upper miocene or older pliocene period. 
I believe the ground to be good for indicating this second kind of 
Chinese proboscidian as Stegodon orientalis, Ow. 
HyNa SINENSIS, Ow. 
The genus Hyena, Storr, Cuv., is represented, in the present col- 
lection, by an upper premolar, p 3 (Pl. XXVIII. figs. 5 & 6), a lower 
premolar, p 3 (ib. fig. 7), and by a lower canine. 
The upper premolar is from the right side of the jaw: it exceeds 
in antero-posterior diameter that tooth in Hyena crocuta, is still 
larger than that of Hyena brunnea*, and is nearly double the size of 
that in the existing Asiatic species, Hyena striata seu vulgaris. 
The main cone is relatively lower than that in H. crocuta ; its outer 
vertical contour is more convex; and this comparison I have been 
careful to make with a specimen of the recent Cape species having 
p 3 worn in precisely the same degree as the Chinese tooth, viz. 
with the apex of the cone just abraded sufficiently to expose a speck 
of dentine. The hinder basal talon (fig. 5, ¢) is larger in Hyena si- 
nensis ; and a tubercular production abuts upon the hind ridge of the 
main cone as in Hyena striata. The antero-internal tubercle (fig. 
6, a) is relatively less than in Hyena striata: the ridge rising from it 
toward the tip of the main cone is as prominent asin Hyena crocuta. 
As in that species, there is no trace of cingulum along the outer side 
of the base of the crown, which is so well marked in Hyena striata. 
In the main, the generic character of this massive bone-cracker is 
closely held by the Chinese cave-tooth. 
The third upper premolar of Hywna spelea, like the rest of the 
dentition, closely accords with that in Hyena crocuta; consequently 
the distinctions above noted equally hold in differentiating the 
Chinese p 3 from that of the Hyzna from our own caverns. 
I come next to the comparison with the fossil remains of Hyena 
from the Siwalik tertiaries, Hyena sivalensis of Baker and Durand. 
The third upper premolar is smaller in the Siwalik Hyzena than in 
* Hyena fusca, Bl., Ostéographie (Hyena), pl. iii. 
t Journal of the Asiatic Society, October 1835, vol. iv. p. 569. See also 
Falconer, ‘ Palzeontological Memoirs,’ i. p. 548. 
