Epiphysis 



lidbrain (Optic lobes) 



^Cerebellum 



A. Dogfish 



^y} Diencephalon 



erebellum 



C. Reptile Diencephalon^^ 

 Cerebnim 



Olfactory lobe 



forpora quadngemina 



Cerebellum 

 Medulla 



'^MEM^ 



D. Mammal 



Diencephalon |^;^ 



Fig. 163. Hemisected Vertebrate Brains. The olfactory and cerebral regions 



are lined; the diencephalon is black; the midbrain is cross lined, and the 



hindbrain is stippled. 



