1869. ] CLASSIFICATION OF THE CARNIVORA. 7 
externally into the much thickened spout-like floor of the meatus 
externus. At the inner extremity of this floor is a freely projecting 
oval lip (¢), which gives attachment to the membrana tympani, and 
Fie. b. 
| il if it 
\ 
Part of the base of the skull of the Grizzly Bear (Ursus ferox). 
. The condyloid foramen. 7. The foramen lacerum posticum. ca. The carotid 
canal. e. The eustachian canal. o. The foramen ovale. @, the posterior, 
and a’ the anterior, opening of the alisphenoid canal. p. The paroccipital 
process. mm. The mastoid process. s. The stylo-mastoid foramen. m.a. The 
external auditory meatus. g. The glenoid foramen*. 
* This and all the figures, except figs. 9, 10, and 14, are taken from specimens 
in the Museum of the Royal College of Surgeons. All are of the natural size, 
except fig. 4, which is enlarged. 
