338 Mr. R. I. Pocock on the 
and retaining the white spot, round ocular pupils and paws 
approximately as in Felis, but with the inner lobe of the 
sheath of the third digit of the fore foot much larger. 
The skull differs from that of Felis in several points :— 
The submalar portion of the maxilla is much lower, the 
anterior end of the malar bone is greatly expanded and 
deflexed above the preorbital foramen, and the posterior half 
of the zygomatic arch is deeper as compared with the anterior 
portion ; the postorbital process of the frontal rises farther 
forwards on the frontal bone; the nasal branch of the pre- 
maxilla is thinner, and the nasals themselves have no forward 
projection at the tip; the outer chamber and partition of 
the bulla are smaller, the posterior end of the partition being 
low and not confluent with the stylomastoid ridge, and, 
although the mesopterygoid fossa is broad in front and 
parallel-sided, the external pterygoid crest forms a longish 
ridge rising far in front of the root of the hamular, and the 
suborbital edge of the palate is less deeply notched. 
In the characters supplied by the bulla, the lowness of the 
maxilla below the malar, the anterior expansion of the 
malar, the persistence of a well-developed first upper pre- 
molar, as well as in other characters of minor importance, 
the skull differs from that of Lynw. 
Genus PrronaiLuRus, Severtz. 
Prionailurus, Severtzow, 1858, p. 887 ; type pardochrous, Gray (=ben- 
galensis, Kerr), 
Distr. Ceylon and India eastward to Borneo and the 
Philippines and northwards into China and Amurland. 
Small cats with the structure of the rhinarium and feet 
unrecorded, but differing from Felis in having rounded 
white-spotted ears. 
The skull recalls that of Felis at first sight, but differs 
therefrom in the sum of a number of characters. It is 
narrower as compared with its length and is less dome- 
shaped in profile view, the face being less steeply sloped 
from the interorbital region. ‘The frontal postorbital pro- 
cesses are narrower, especially when seen from behind. ‘The 
nasals are depressed, not everted apically, and the ascending 
or nasal branch of the premaxilla is more evenly attenuated. 
The inferior edge of the orbit is less salient, and the posterior 
half of the zygoma is less arcuate in profile view. The 
mesopterygoid fossa is narrower, especially anteriorly, with 
its front border more rounded, and the external pterygoid 
