Classification of existing Felide. 341 
Leone to the Ituri forest, a species which appears to be 
more nearly related to Prionailurus than the Asiatic repre- 
sentative of the genus, P. temmincki. The first upper pre- 
molar is markedly larger, when retained, than in P. tem- 
mincki; the external pterygoid crest is less well developed, 
especially posteriorly, where it exhibits a distinct notch 
before its spiniform termination ; the occipital areais not so 
wide and shows a shallow emargination on each side, and 
the ridge below the masseteric fossa of the mandible is not 
so large. 
(2) “The Asiatic species, assigned to Catopuma by Severtzow 
and to Pyrofelis by Gray, has the first upper premolar 
minute, when retained, the postorbital processes are longer, 
the external pterygoid crest very well developed, especially 
posteriorly, where it ends in a spine but exhibits no notch ; 
the occipital area is very wide and has no distinct lateral 
emargination, and the crest below the masseteric fossa is 
more salient. 
Genus ZiBETHAILURUS, Severtz. 
Zibethailivus, Severtzow, 1858, p. 387 ; type viverrina, Benn. 
Viverriceps, Gray, 1867, p. 268; type viverrina. 
Distr. India and Ceylon to Southern China, Formosa, and 
Tenasserim. 
Medium-sized cats with small, rounded, white-spotted 
ears, moderately large rhinarium, and feet provided with 
small claw-sheaths and webs of moderate depth. 
The skull may be described as a modification of the 
Prionailurus-type, many, but not all, of the differences being 
attributable to its accommodation to great development of 
the masticatory muscles. The sagittal crest is completed by 
the coalescence of the temporal ridges at a much earlier age, 
and the postorbital constriction forms in adult and subadult 
specimens a long emargination of the frontal on each side, 
instead of an angular notch immediately behind the process 
as in Prionailurus. Similarly, the lateral edges of the 
occipital area are more deeply emarginate and the coronoid 
of the mandible is broader at the summit. 
The ascending branch of the premaxilla is broader than 
in Prionailurus. The inferior edge of the orbit is thicker 
and the anteorbital excrescences very conspicuous, and the 
cheek between the alveolar border and the orbit is relatively 
lower. ‘The suborbital edge of the palate is less conspicu- 
ously notched. The external pterygoid crest is represented 
by a small triangular ridge above the hamular, being 
