MR. W. K. PARKER ON THE SKULL IN THE MAMMALIA, 
PLATE 21 
ee a ne eee a 
| Number of 
Figures. | times 
magnified. 
- - | 
1 Erinaceus europeus (8th stage, continued); sub-adult ; 
skull ; lower view. 12 
2 The same ; upper view . 12 
3 The same ; side view | 12 
4 The same; endview .......... . .4 13 
5 The same ; lower jaw ; outer view . 12 
6 The same ; inner view 12 
rg The same ; nasal labyrinth ; upper view 24 
8 The same ; lower view . 24 
9 The same ; side view 24 
