SIWALIK AND NARBADA CARNIVORA. 
127—304 
are described together, and the not unnatural conclusion arrived at that “ no other 
species of Hysena is known in which there is such a remarkable combination of 
characters shared by such divergent forms ! ” The one specimen of a mandible in 
the British Museum collection (No. 16,5.55) which alone can belong to the same 
species as the type skull, is ignored by Mr. Bose ; and this is also the case with two 
incomplete skulls (Nos. 37,134 and 37,136): while not the slightest reasons are given 
for these omissions, or for the association of the specimens mentioned above under 
H. sivalensis. 
The name II. sivalensis , Bose, will be adopted here for the species to which the 
typical cranium belongs ; but it will be utterly useless to quote any part of Mr. 
Bose’s description, as that includes the other specimens mentioned above. 
Type cranium . — Two full-sized views of the above-mentioned cranium are given 
in plate XXXIV. of the ]3resent volume : it is also figured in the “ F.A.S.” 1 and the 
u Palaeontological Memoirs ”; 2 where the profile and occipital views are given, on a 
small scale. It seems from the latter figures that, with the exception of the loss of 
the summit of the occipital crest, and both zygomatic arches, the specimen was 
originally fairly perfect as far forwards as the canines, where it is broken by a 
fracture extending obliquely from the anterior border of the right canine to the 
posterior border of that of the opposite side. In its present condition both occipital 
condyles are wanting. The right canine has lost its enamel, and its summit. On 
the same side there remain pm. 2 , pm. 3 , and pm. 4 • all considerably worn, and thus 
indicating the full age of the specimen. On both sides the alveoli of pm. 1 , filled with 
matrix, are visible : the interval between the canine and pm. 2 is comparatively short. 
Commencing with pm. 4 , if will be seen from the figures that the hind lobe of 
this tooth is not longer than "the middle lobe ; the whole tooth being relatively small, 
and its inner tubercle well developed, although not extending so far forwards as the 
blade. In these two points this tooth differs from the corresponding tooth of II. 
felina , H. colvini, 3 and II. crocuta , and agrees with that of II. striata and II. brunnea ; 
and these differences are of such importance as to indicate that the specimen has no 
affinity with either of the first three species mentioned above, but that its relations 
are entirely with II. striata and its allies ; whence comparisons will accordingly be 
confined to the latter. The true molar (m. 1) is an elongated tooth, with its transverse 
diameter of about the same size as in the corresponding tooth of H. striata , but with 
the antero-posterior diameter considerably larger. As the palate of the present 
specimen is narrower than in II. striata , the whole dimensions of m. 1 are pro- 
portionately larger than in that species. The true molar is placed to a great extent 
behind pm. 4 ; instead of entirely on its inner side as in II. striata. The crowns of 
1 Supplemental plate K, figs. 2, 2a, 2b, 2c. 
2 Vol. I., pi. XXV.. figs. 1-4. Both this and. the plate in the “ F.A.S.” are erroneously lettered Felis crislnia. 
3 Two specimens represented in plate XXXV., fig. 4, and XXXVa., fig'- 3, are apparently an exception; but in the 
former the tubercle is broken and aborted ; while in the latter it is merely the extreme edge of the blade that has abnormally 
grown in advance, and not the tubercle itself that is placed posteriorly. 
