66—32 INDIAN TERTIARY AND POST-TERTIARY VERTEBRATA. 
lower 2 )remolar is apparently proportionately narrower. The molars of S. 
chcGTotherimn^^ besides their inferior size, are readily distinguished by the extremely 
simple structure of the columns on their crowns. 
From the foregoing evidence it appears that there is every probability of the 
present species being distinct from every described form ; and it is therefore allow- 
able to assign to it at least a 2 :)rovisionally distinct name : from the very large size 
of the sj^ecies the name 8. titan may be approjDriately aj^jdied. This species in the 
structure of its true molars was evidently allied to the above-named fossil species 
from Ejjjielsheim, Pikermi, and Mont Leberon ; but Avas much more specialized in 
the development of its canines than the sjDecies from the two latter localities, and 
apparently also, although to a less extent, than the E 2 ) 2 :)elsheim species. This large 
develojDinent of the canines is a AA^ell-marked instance of the specialization, and 
consequently late geological age, of the Siwalik fauna. In the structure of its 
lower premolars 8. titan is intermediate betAveen the mandible referred to 8. giganteus 
and the fossil Eurojoean pigs ; pm. 4 being a wider tooth than in the latter, and pm. 3 
in some instances retaining eA’idences of the relationship of its OAvner to a Tetraconodon- 
like form by the retention of three distinct roots. Although it is j^robable that 8. titan 
and the large Euroj^ean fossil jdgs are nearly connected, it is at }3resent impossible 
to indicate the home of the common ancestral stock. 
Distribution. — All the specimens described above were obtained from the Siwaliks 
of the Punjab. 
Species 3 : Sus falconeri, n. sp., nobis. 
Syn. Sus giganteus.^ F. and C., in parte. 
8us sivalensis, Blain. (non Falc. and Caut.) 
Sus, sjD. nov.. Baker and Durand, 
History. — The name of the p)resent species is mentioned here for the first time ; 
the specimens on AA^iich it is founded having been previously either referred by 
Falconer and Cautley to S. giganteus, by De Blainville to 8. sivalensis, or not specific- 
ally named. 
Cranium of male . — In figures 3, 3a, 3b of plate LXIX. of the “ F.A.S.” there 
are gwen three small-sized views of the cranium of a Shvalik pig in the collection 
of the British Museum (No. 16,386), under the name of 8. giganteus. The specimen 
has lost the extremity of the muzzle, but is otherwise nearly complete anteriorly : 
posteriorly it is broken off in the middle of the temporal fossa, and has lost a portion 
of the fronto-parietal region : the teeth are all well worn, and indicate an aged 
animal. 
In describing this specimen it will be simplest to indicate in what res^jects it 
differs from the crania of Sus giganteus and /S', titan, which have been shoAAUi to be of 
the same general type, and may therefore be considered together. In the first place, 
the size of the cheek-teeth indicates an animal nearly or quite as large as the British 
1 Ulainville, “ Osteographie,” Genus Stis, pi. IX. 
