556 



TEXT-BOOK OF EMBRYOLOGY. 



Corpus callosum Hippocampal fissure 



fca, 



Olfactory stalk 



Lamina terminalis | | 



Anterior commissure | 



Beginning anterior column of fornix 



I Hippocampal fissure 

 Chorioid fissure 



FIG. 481. Graphic reconstruction of the mesial hemisphere wall of a human foetus 



(fourth month). His, from Quain's Anatomy. 



c and v, Anterior and posterior parts of preterminal area; li, lamina infrachorioidea; Icm, limbus or 

 border of mesial hemisphere wall (gyrus dentatus and fimbria) between hippocampal and 

 chorioid fissures; P, "stalk" of hemisphere. 



faU 



FIG. 482. Diagram of a transverse section through the fore-brain of a human foetus (fourth 

 month) to show the relations of the margins of the mesial walls of the hemispheres. His, 

 from Quain's Anatomy. 



Cs., corpus striatum; fi., limbus medullaris (fimbria); fa., limbus corticalis (gyrus dentatus); h.f., 

 hippocampal fissure; Th., thalamus 



