510 DAVIDSON BLACK 
ip 
N 
yy 
N fe 
N 
S 
N 
N 
N 
LILLE LLL LLL LLL 
0 
OLD 
.o. 
+ 
> 
2, 
i 
eee o28 os © 
e76e@8eedcns 
Fig. 25 Reconstruction charts of motor roots and nuclei. VY. Polyodon, 
B. Acipenser (after Theunissen, 91), C. Lepidosteus (after Theunissen, 91), 
D. Amia (after Kappers, 66). Signs and abbreviations as before (vide p. 476). 
