RANA, 349 
cartilaginous nasal capsules and posteriorly with the audi- 
tory capsules. At the front end of the latter are the prootic 
bones and on the nasal capsules are the zasa/s. On the 
ventral face of the nasal capsules are the vomers. 
In the prepared cartilaginous skull, a large cartilaginous 
bar (the swdorbital bar) can be seen running backwards 
from the nasal region outside the eyes to meet a similar bar 
projecting from the auditory region. Here it protrudes out- 
wards as the guadrate cartilage which bears the mandible. 
The whole represents the palatoquadrate bar of the skate. 
In the natural condition it is covered up by a number of 
Fig. 247.—DorsaL VIEW OF ENTIRE FRoG’s SKELETON. 
(Natural Size.) (Ad zat.) 
| 
Wh ip Phalanges. 
" Metatarsals. 
Proximal tarsals, 
