114—10 INDIAN TERTIARY AND POST-TERTIARY VERTEBRATA. 
Genus : PAL^ORYX, Gaudry, 
Distribution. — Two species, P. pallasi and P. parvidens^ have been determined 
from Pikernii,^ and a third, P. meneghinii^ has been recorded by Prof. Riitimeyer® from 
Italy. 
Pal^oryx (?) sp. 
History. — In the preface to tlie first volume of this worlP it is stated that two 
molars from the Siwaliks may possibly belong to the present genus. 
Upper molar. — One of the above-mentioned teeth (both of which came from the 
Punjab) is represented in pi. XIII., figs. 9, 10 : it belongs to the left side, and is 
about one-third worn. It differs from the molars of Oreas (?) latidens (figs. 12, 13) 
by the crown being lower, which causes the outer surfaces of the lobes to be relatively 
wider ; by the slighter development of the costse (especially the last costa of the 
hinder lobe), and by their union at the ^ neck ’ to form an imjierfect cingulum {not 
ivell shown in the figure). It also differs by the more rugose enamel, the less perfect 
flatness of the outer surfaces of the lobes, and the compressed form of the accessory 
column in the median valley, which is attached entirely to the posterior ‘ crescent.’ 
In all these respects this tooth agrees with the molars of Palceprg.v and Tragoceros ; 
but seems to come nearest to the figured specimens of the former, although having a 
larger accessory column : the size of this column is, however, so inconstant in the 
European form that it cannot be regarded as of generic value. Whether the present 
specimen really belongs to Palceorgx may be considered doubtful ; but it pretty 
certainly indicates a closely allied form, and a second species of large Siwalik 
antelope. 
Genus: BOSELAPHUS, Blainville. 
Syn. P or tax, H. Smith. 
Number of species . — The genus is exclusively Indian ; comprising the existing B 
tragocamelus^ (Pall.), the pleistocene B. namadicus (Riitimeyer), and the Siwalik form 
described below. 
Boselaphus, sp. 
History . — In 1878 Prof. Riitimeyer® described two portions of the cranium of a 
ruminant from the Narbadas, under the name of Portax namadicus : that sjDecies 
being distinguished from the living form by the closer approximation of the horn- 
1 Op. cit., pi. XLVII. 2 “ Die Rinder der Tertiar-Epoclie,” p. 87 (‘ Abh. schweiz. pal. Gesel,’ — 1877-8). 
3 Page XV. (1880). 
4 In the British Museum there is a part of the right maxilla of a ruminant (No. 16,657) from the Siwalik Hills, con- 
taining the last five, cheek-teeth, which probably indicates a third species of large antelope. The last molar is nearly as large 
as in the figured jaw of Oreas (?) latidens, but the two preceding molars and the two premolars are very much smaller. 'Ihe 
teeth come nearest to those of that form ; but the first costa of the second lobe is less, and the last costa much more strongly 
developed ; the accessory columns in the median valleys are somewhat larger. 
5 Syn. 15. (Pall.). 
6 “ Die Rinder der Tertiar-Epoche,” page 89, in ‘ Abh. schweiz. pal. Gesel,’ vol. V. 
