10 
INDIAN TERTIARY AND POST-TERTIARY YERTEBRATA. 
molars of this genus ( woodcut fig. 1 ) are characterized 
by their broad and tall crowns, the narrow external 
surfaces of the lobes carrying distinct median costae, 
and the tall, narrow, internal accessory column, 
which is attached entirely to the posterior crescent, 
and is not expanded antero-posteriorly at its inner 
termination. 1 
Genus. PALiEORYX, Gaudry. 
The upper molar described and figured in 
vol. III. p. 114. pi. XIII. figs. 9, 10, which it was 
suggested might possibly belong to this genus has 
been shown on the last page to be indistinguishable 
from the molars of Strepsiceros (?) falconeri. 
Fig. 1. Boselaphus tragocamelus (Pallas). The 
second left upper true molar, in an almost 
unworn condition : recent, India. 
Genus. HIPPOTRAGUS, Sundevall. 2 
Distribution. — The existing species of this genus inhabit tropical and south Africa. 
Species. Hippotragus sivalensis, nobis. 3 
Syn. Antilope sivalensis , nobis. 4 
History. — The so-called Antilope sivalensis was founded on a very imperfect and 
crushed cranium from the Siwaliks of the Kangra district, which is preserved in the 
Indian Museum, and is figured in vol. I. pi. XXV. figs. 1, 2 of the present work. 
A more perfect cranium in the British Museum, was identified by the writer with this 
species, and at first provisionally, 5 and subsequently more definitely 6 referred to the 
present genus. The Calcutta specimen has been sent to England and compared 
with the one in the British Museum ; the two are very similar, but the former has a 
depression on the lachrymal, which is not improbably due to crushing. 7 
Cranium. — The British Museum cranium is represented in pi. II. figs. 4, 4a ; a 
cranium of the African H. niger being represented in figs. 3, 3a of the same plate. 
The fossil, which probably belonged to an immature male, shows the bases of the 
horn-cores, but has lost the nasals, premaxillae, and a small portion of the occiput ; 
the last two milk-molars are still retained, the third true molar not being protruded 
from its alveolus. A comparison of the figures will show how extremely close is the 
resemblance between the recent and fossil crania. Thus both show the absence of 
a distinct lachrymal depression, the existence of a small elongate lachrymal 
fissure, and similar supraorbital foramina without pits at their entrance. Both 
1 Unworn teeth of Cervus aristotelis present a considerable resemblance to those of Boselaphus, but are readily distinguished 
by their broader and shorter crowns, and by the circumstance that the inner accessory column is attached to both crescents. 
The distinctive features of the molars of Hippotragus will be noticed under the head of that species. 
2 ‘ K. Svenska Vet-Akad, Handl.’ for 1844. p. 196. 3 Supra vol. I. p. 154 (1878) — Antilope. 4 Zoc. cit. 
5 ‘ Geol. Mag.’ dec. 3. vol. II. p. 170 (1885). 
6 “ Cat. Foss. Mamm. Brit. Mus,” ,pt. II. p. 49. No. 39558 (1885). 
7 If this depression should be normal it would indicate that the Calcutta is distinct from the British Museum specimen ; 
in view of which contingency comparisons will be confined to the latter. 
