SIWALIK AND NARBADA CARNIVORA. 
145—322 
base of the skull, in which the portion behind the palate is longer than the palate 
itself : the reverse obtaining in the tiger. The sagittal crest is much more developed ; 
and according to Dr. Falconer originally extended in a straight line from the frontals 
to the occipital crest, 1 without the marked depression which always occurs in the 
tiger. 2 In consequence of this great development of the sagittal crest the hinder 
portion of the frontals is more elevated above the level of the post-orbital processes ; 
causing the junction of the facial and cranial elements to form, when viewed in 
profile, a less marked angle than in the tiger : this character is an approach to that 
found in some species of Machcerodns (e.g. M. neogaius). The occipital crest is also 
deeper, and overhangs the condyles to a greater extent ; the condyles themselves 
being relatively larger. The anterior root of the zygoma is deeper and its inferior 
border more arched, and placed at a greater 
distance from the alveoli of the cheek- 
teeth. The glenoid fossa, in place of 
having nearly the same antero-posterior 
width throughout its extent, is considerably 
expanded in this direction at its outer 
extremity. In the posterior part of the 
palatal aspect still more striking differences 
may be observed. Thus in the fossil the 
whole periotic region is brought nearer to 
the glenoid fossa than in the tiger (wood- 
cut fig. 1G); this being accompanied by 
the larger size of the mastoid process (m), 
and (as far as their broken condition 
admits of determining) of the bulla and 
paroccipital process ( p ). In consequence 
of these differences the space, or cavity, 
behind the glenoid fossa, which in the 
tiger is open, with a highly inclined 
anterior wall, becomes much narrower, and 
more highly arched; with its anterior wall 
not far removed from the vertical. The 
position of the various foramina is of 
necessity different in the two skulls ; thus 
skull, with a portion of the auditory bulla removed : , pi 
c , condylar foramen ; l, foramen lacerum posticum : tllB cipGrtlirG 01 til 6 GUStclclllclll C3Hcll yCj ? 
car, carotid canal ; e, custachian canal ; o, foramen pl ace of being behind the post-glenoid 
ovale ; p, paroccipital process : w, mastoid process of . # Kjjjj a c 
periotic: am, meatus auditorius externus. prOCGSS \P£Jj &S in til 6 tigGEf IS SltllcVtod Oil 
the same transverse line ; while the foramen ovale ( 0 ) instead of being on the line of 
the post-glenoid process, is considerably in advance of it. 
1 In plate XLII. the dotted profile line .should apparently have been straight. 
2 Compare De Blainvillc, “ Osteographie,” Genus Felis, pi. VII. 
J 2 
