SIWALIK AND NARBADA CARNIVORA. 
139—316 
Genus I. : iELUROPSIS, n. gen., nobis. 
Species: AElueopsis annectans, nobis. 
History . — The present genus and species are mentioned here for the first time. 
Mandible. — In figures 4, 4a of plate XXXIII. there is represented, from the 
dental and inner aspects, the hinder part of the right ramus of a carnivore, collected 
by Mr. Theobald in the Siwaliks of Asnot. The specimen is broken off posteriorly 
at the commencement of the masseteric fossa, and anteriorly in front of the alveolus 
of pm 3 : it shows the complete unworn pm 4, the broken m. 1, and the alveolus of 
mV ; that of pmV being concealed by matrix. The number of the hinder cheek- 
teeth is the same as in Lepthycena ; and the form of these teeth is also very similar 
in the two. Thus the alveolus of m72 is single, and circular ; while in m. 1 there is 
a large talon, and the form of the broken base of the blade shows that it was 
furnished with an inner cusp of much the same shape as in the latter : the whole 
tooth is, however, shorter, its length being less than that of pm. 4. The latter tooth 
is extremely long and narrow; with a sharp, compressed main lobe, well-developed 
fore-and-aft talons, and a large posterior cingulum. The jaw is of great vertical 
depth; this diameter being nearly equal to the united length of pm. 4 and mTl. Its 
inferior border is convex posteriorly, but concave towards the middle ; with a distinct 
commencement of a downward symphysial expansion at the point of fracture ; there 
is also a marked lateral thickening at. this point (fig. 4), indicating the commencement 
of the symphysis, and that the earlier premolars were probably suppressed. The 
mental foramen is large and single, as is often the case in Machcerodus. 
The dimensions of the 
specimen 
are as follows, viz . : — 
Length of pm. 4 
0-69 
Depth of jaw at m. 1 
1-35 
Width „ 
0-28 
Thickness of jaw at pm. 4 
0-44 
Length ,, m. 1 
0-6 
,, ,, ,, ,, fracture 
0-55 
Width „ „ „ 
0-3 
Since an excess in length of pm. 4 over m. 1 is a character only found among 
some of the existing cats, 1 while the structure of the former tooth is also feline, 
there is every reason to believe that the specimen belongs to that group. The 
retention of mV and the appendages of mTl indicate, however, affinity with the 
primitive cats and Lepthycena. In all the American and European primitive cats, in 
which in. I retains its appendages, that tooth is longer than pm74, while the depth of 
jaw is never anything like that of the present specimen. Lepthycena comes, however, 
a step nearer in this respect. In the presence of a descending symphysial expansion 
the jaw under consideration agrees with certain of the primitive cats and Machcerodus ; 
especially with those species of that genus like M. palceindicus (plate XLIV., fig. 3), 
in which the descending process commences far back, and the jaw itself is of great 
proportionate depth. The general resemblance between the two (as far as the 
imperfect condition of the present specimen admits of comparison) is indeed so great 
l E.g certain individuals of Felts pardus (B. M. No. 115, a). 
