CRANIAL NERVES OF SILURUS AND MORMYRUS 55 
L 
w 
’ 
Pi : 
v= -3-e---= 
ie 
ry 
2 
o- 9 
§ 
es ecat~ Seeks 
1 
t 
' 
‘ 
m Sum. Vv Wn. 
Fig. 13 At the level of the IV nucleus. J.cer., Ichthyo-cerebellum; J/7, 
nervus oculomotorius going forward; 7V, trochlear root at its exit; JV n., tro- 
chlear nucleus; JV r., trochlear root; M.cer., Mormyro-cerebellum (Franz); 
Tr.VIII m., tractus octavo-mesencephalicus (lemniscus lateralis). 
