Classification of existing Felide. 
a, First upper pm long, conical, two-rooted; first 
d. 
é 
Ss 
lower pm higher than second; _postorbital 
bar complete, with slightly rounded posterior 
margin ; condyle and angular set well behind 
broad rounded coronoid; tip of lower canine 
projecting high above lower edge of nares ...... 
Without that combination of characters.......... 
. Rhbinarium very large;- ears nearly meeting on 
summit of head. Malar greatly expanded in 
front, where it is clamped externally to preorbital 
foramen ; cheek low ; narrow postcanine space .. 
Without that combination of characters ........ 
» Outer chamber of bulla very large, extending in 
front of narrowed apex of inner chamber ; groove 
of partition passing from stylomastoid foramen 
to basioccipital suture ................ CD CE 
Outer chamber of bulla smaller or very small, not 
extending anteriorly in front of wider end of 
inner chamber, groove of partition passing to 
anferion edee.ab hullany i sco2 whidinds oath 0. 
Face strongly sloped; upper rim of anterior nares 
Gy Mipamie aD eS! Cid ds vig als aes aici EO Ee 
Outer chamber of bulla small or very small; 
partition rising close to crest of tympanic 
MMU Riese rnc wtg canta Pod ape we O88 oat 
Nasal branch of pmx broad above behind nasal, 
then abruptly pointed; suborbital margins of 
palate deeply notched; upper pm’ normally 
VNESIEL Dep Sr ie tule ee Coane a ey Mare ee fe 
Nasal branch of pmx gradually attenuated above; 
suborbital margins of palate not deeply notched ; 
upper pm’ absent or early deciduous .......... 
. Skull short, rounded, zygomata wide, maxilla 
receding, not expanded above ; palatine foramen 
in orbit very large, the distance between it and 
the orbital foramen only a little greater than the 
width of the wide, short mesopterygoid fossa and 
than the anterior nares; palate broad, sides of 
its posterior elongation widely divergent; post- 
orbital processes short, blunt; occiput wide 
SCRGHG IMAM, le eee aaa Sige oAlc's © 2 «vee 
Without that combination of characters ...... 
. Mesopterygoid fossa lanceolate in front, with very 
thick lateral edges or large external crest; skull 
short, broad and high .......... i: 
Without that combination of characters ........ 
. External pterygoid crest reduced to a small tri- 
angular lamina; preorbital thickening of malar 
349 
Ictailurus. 
Leptailurus. 
CG 
Trichelurus. 
Dendratlurus. 
f 
Felis, 
Lynx. 
Puma. 
h. 
Pardofelis. 
t. 
