MR, W. K. PARKER OK THE SKULL IK THE MAMMALIA. 
PLATE 5. 
Figures. 
Humber of 
times 
magnified. 
1 
Tatusia hybrida ; embryo ; 3 inches long (3rd stage) ; 
enclocraninm ; upper view. 
3. 
°4 
2 
The same ; end view. 
n 
3 
The same ; auditory region ; outer view. 
131 
4 
Tatusia liybrida; embryo ; 2 inches long ( 2 nd stage); 
auditory region ; outer view. 
13T 
5 
Tatusia peba ; embryo ; 3 inches long (4th stage); skull; 
lower view. 
3f 
6 
The same ; vertical section of skull; inner view . 
H 
7 
The same ; skull; end view. 
H 
8 
The same ; ossicula auditus. 
Hi 
