HY ENODONTID #. 31 
M. 1379. The last right lower premolar; from the Upper Eocene of 
Caylux. Purchased, 1884. 
Hyzenodon (?) sp. 
(Cf. Hycenodon indicus, Lydekker 1.) 
Hab. France and (?) India. 
The species H. indicus was founded on the evidence of a fourth 
right lower premolar from the Pliocene Siwaliks of the Punjab, 
India, which indicates a species of very large size. This tooth is 
represented in the accompanying woodcut (fig. 1). At the same 
Ries i: 
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Kushalghar, Punjab. Indian Museum, Calcutta. }. (From the ‘ Pale- 
ontologia Indica.’) 
time two other teeth, which were regarded as being third lower 
true molars, were described and figured (‘ Paleeontologia Indica,’ 
ser. 10, vol. 11. pl. xli. figs. 5, 6), and provisionally referred to the 
same species, although it was suggested that they might possibly 
belong to a distinct species, or even genus. The most perfect of the 
two Indian teeth belongs to the left side, and was described in the 
following words, viz.:—‘‘It is divided into two distinct lobes, of 
which the first is the stoutest: externally there is a stout cingulum 
forming the base of the crown. Posteriorly the lower border of the 
enamel of the crown runs suddenly upwards on both sides, nearly 
to the summit of the hind lobe.” The tooth comes nearest to “the 
last lower true molar of Hycwnodon*; in some species of which (e. g. 
1 Paleontologia Indica (Mem. Geol. Surv. Ind.), ser. 10, vol. ii. p. 349 
(1884). 
2 The tooth might be taken for the lower carnassial of a feline; but is distin- 
guished by the form of the lower border of the enamel, and of the worn sur- 
faces of the summits of the lobes, by the presence of the cingulum, and the size 
and direction of the fangs. In the large primitive felines (e.g. Alurogale inter- 
media) there is a hind talon to the lower carnassial. 
