MR. W. K. PARKER OR THE SKULL IN THE MAMMALIA. 
PLATE 21. 
Number of 
Figures. 
times 
magnified. 
1 
Erinaceus europceus (8th stage, continued) ; sub-adult ; 
sknll ; lower view. 
i A 
i 3 
2 
The same ; upper view. 
1-2 
1 3 
3 
The same ; side view. 
If 
4 
The same ; end view. 
If 
5 
The same ; lower jaw ; outer view. 
1 *■ 
1 3 
6 
The same ; inner view. 
-|2. 
1 3 
7 
The same ; nasal labyrinth ; upper view. 
2-i. 
8 
The same ; lower view. 
9 l 
■“ 2 
9 
The same ; side view. 
1 
to 
joH 
i 
i. 
