CHAP, xiii.] THE CATS PLACE IN NATURE. 



487 



other than the family of cats themselves (Felidce), we may now 

 contrast the latter (i.e., the Fcllclce,) with each of the former. 



The different kinds of cats all agree with the common cat in 





Fig. 207. PART OF THE BASE OF THE SKULL OF THE TIGER (Fells tigris). A PORTION OF THE 

 AUDITORY BULLA HAS BEEN REMOVED TO SHOW ITS INTERIOR. THE CAVITY OF THE 

 INNER OR POSTERIOR CHAMBER is EXPOSED (Flower). 



am. Meatus auditorius externus. 



c. Condyloid foramen. 



car. Carotid foramen. 



e. Eustachian canal. 



1. Foramen lacerum posterius. 



m. Mastoid process. 



o. Foramen pvale. 



p. Par-occipital process. 



r. Fenestra rotunda. 



s. Septum between the chambers. 



* The aperture of communication, 



structure, save as regards the details already pointed out in the last 

 chapter. We may then proceed to sum up the main points in which 

 the cat's FAMILY differs from the other three families of the sub- 

 order JEluroidea, as follows. 



