591 



Fig. 11. 



Tectum opticum 



Valvula 

 Torus sem. Halleri 



Tr. tecto-cerebell. 



Tr. lobo-cerebell. 



See. vagus com. 



Tr. tecto-bulb. - 



Tr. lobo-bulb. et 

 cerebell., crossed 

 Nuc. N. ocul. 



Tr. lobo-bulb., direct 



Comra. ansif. 



Bundle of Metnert 

 N. oculomot. 



Fig. 12. 



11 10 9 



and valvula the granular layer occupies the lateral portions, while the 

 molecular layer is less voluminous and occupies the mesial portion. 

 (Figs. 7—9). The body and valvula have apparently been formed by 

 a down-folding of the roof of the cerebellum in the middle line, this 



