438 



THE CAT. 



[chap. XII. 



an extinct form wliich. was as largo as tlio lion. Certain portions of 

 the skull and of tlie mandible, with the lower sectorial, have been 

 more or less preserved. The description, however, as yet published 

 is too incomplete to admit of its place in the cat series — supposing 

 that it really has a place there — being determined. 



The name Truci/elis* has also been imposed on an upper sectorial 

 tooth, which is more like a cat's milk sectorial tooth than it is 

 like the permanent sectorial. It cannot therefore as yet, any more 

 than Li)n)iofeIis, be admitted as a recognised extinct member of the 

 cat group of animals. 



Our knowledge of the kinds which have been reckoned as distinct 

 species {;i.e., of the species of the various fossil genera) is too frag- 



Fig. 190.— Part of Lower Jaw and Teetu of Eusmilus hukntutus. 



A. lliglit side of mandible. 



((. Sooket of lower sectorial. 

 c. Canine. 

 i. Incisors. 



B. Under surface of anterior end of 

 mandible. 

 c. Canine. 

 i. The four incisors. 



mcntary to admit of their enumeration, alongside of existing kinds, 

 as of equal value. Some four species of Binictis, five of Psemhelurus, 

 three or four oillojjloplioncua, two oi Pocjonodon and two oi Nimravus, 

 and at least eleven of Machwrodus have been described. 



It is not possible to arrange the extinct and existing genera in one 

 series, but if the cheetah {Ci/ncclHrus) and jElnrodon be left out, the 

 rest may perhaps bo arranged on either side of Felis (according to 

 their affinities to it and to each other) in the following order : — 



1, Arcliccluvus. 2, Diuictis. 3, NiinravKs. 4, Pscudcelurus. 5, 

 FcUs. G, IIoj)/oj)/ionens. 7, Pogoiiodon. 8, Machosrodus, 9, Em- 

 milus, 



* V>y Proressor Leitly, /. c, plate 28. 



