3 
** No inferior tubercular molar. 
Ae 
Premolars 3; incisors 3. Hoplophoneus. 
Premolars ;; incisors s. Lusmilus. 
Inferior sectorial without heel; an anterior lobe of the 
superior sectorial, and posterior lobes of the premolars. 
Premolars 3, first inferior two rooted. Machexrodus. 
Premolars ;;; first inferior one rooted. Smilodon. 
II. The anterior and lateral faces of the mandible continuous, 
convex... (No inferior tubercular molar.) 
a. Inferior sectorial tooth with a. heel. 
Ade 
Premolars 3, no posterior lobes; second superior with in- 
ternal heel (plantigrade). Cryptoprocta. 
Premolars 2 with posterior lobes; no heel of second supe- 
rior. Pseudexlurus, 
Inferior sectorial without heel; premolars with posterior 
lobes; superior sectorial with anterior lobe. 
gs. Superior sectorial with internal heel. 
y- Pupil round. 
Premolars 2. Unceia. 
Premolars 3. Neofelis. 
yy. Pupil vertical. 
Orbit closed behind; premolars 3. Catolynx. 
Orbit open; premolars 2. Felis. 
Orbit open; premolars }. _ Lyneus. 
BB. 
Superior sectorial without internal heel. 
Pupil round, premolars 3; orbit open posteriorly. 
Cynelurus 
The following catalogue includes the species of the Felidz, the 
names of the recent ones being derived from Gray’s Catalogue, 
and printed in Roman letters. These are probably too numerous 
in the genera Felis and, Lyncus, but I do not possess the means 
of properly disposing of them. 
Dinictis, Leidy. Aelurogale, Filhol. ?Daptophilus, Cope. 
D. intermedia, Filhol. Phosphorites, France. 
D. squalidens, Cope. White River, Colorado. 
D. felina, Leidy. White River, Nebraska. 
D. cyclops, Cope. White River, Oregon. 
Nimravus, Cope. 
N. brachyops, Cope. White River, Oregon. 
