350 THE MORPHOGENESIS OF THE CENTRAL NERVOUS SYSTEM 



Median olfactory 

 gyrus 



Middle olfactory 



gyms 



Diagonal gyrus 



Cerebellum 



Insula 



Lot. olfactory gyrus 



Gyrus ambiens 

 Gyrus semilunaris 



Oliva 



PIG. 354. Ventral view of the brain of a 100 mm. fetus to show the rhinencephalon (Kollmann). 



Sulcus postcentralis Sulcus centralis 



Lobus 



parietalis 



superior 



Occipital 

 pole 



Inferior 



frontal 



siilcus 



Ascend- 

 ing 

 ram us 

 Lateral 

 fissure 

 (Sylvii) 



Temporal 

 lobe 



Superior temporal gyrtis Middle temporal gyrus 



FIG. 355. Lateral view of the right cerebral hemisphere from a seven months' fetus 



(Kollmann). 



