148 G. I. Adams — Extinct Felidw. 



cation of the post-glen oid and post-tympanic processes and has 

 called attention to its resemblance to American Smilodons but 

 did not refer it to that genus. M. palceindicus Bose will also 

 probably prove to be a Smilodon. 



The specimen from Pikermi, in ' the Munich museum, 

 described by Wagner as F. leoninus and now referred to M. oul- 

 trideus, is very like Smilodon, but only the anterior portion of 

 the skull is preserved. M. latidens was described by Owen 

 from a canine and an incisor having basal cusps. Gervais has 

 since referred other material to this species. Dinobastis Cope, 

 in which the generic character is the absence of the internal 

 root of the superior sectorial, is known only from teeth and a 

 few foot bones. The incisors, as Cope has noted, have basal 

 cusps. There are strong resemblances between this specimen 

 and the material now referred to M. latidens. There is some 

 hesitancy in accepting a genus founded upon such limited mate- 

 rial, especially when the differences are so slight. Dinobastis 

 can very reasonably be considered a synonym of Smilodon. 

 Finally the genus Smilodon is not only a later developmental 

 form but is found in later deposits, and this is not an unim- 

 portant argument in favor of retaining it as a distinct genus. 



EXPLANATION OP FIGURES 4 TO 8. 



All figures x %. 



Figure 4. — Nimravus gomphodus Cope, after Cope. 

 Figure 5. — Nimravus confertus Cope, after Cope. 

 Figure 6. — Nimravus debilis (Archwlurus debilis Cope), after Cope. 

 Figure 7. — Nimravus intermedins {JElurogale intermedius ¥i\Yio\), after Filhol. 

 Figure 8. — Nimravus minor (JElurogale intermedius, var. minor, Filhol), after 

 Filhol. 



Lawrence, Kansas. 



