SEPTUM, HIPPOCAMPUS, PALLIAL COMMISSURES 



455 



Figs. 48 to 53 Mole (Scalops), six transverse sections from a Weigert series. 

 Magn. 12 diam. 



Fig. 48 Mole, transverse section through the rostral end of the hippocampus 

 (line a in fig. 55). Note the enlarged and in-curved primordium containing large 

 cells. Compare with figure 26 (Opossum). 



Fig. 49 Mole, transverse section between the foregoing and the genu (line 

 b in fig. 55). Description in text. 



Fig. 50 Mole, transverse section at genu corporis callosi (line c in fig. 55). 

 The medial parolfactory nucleus is coextensive with the precommissural bundle. 

 The nucleus is very similar to that in the bat (fig. 42). 



Fig. 51 Mole, transverse section through neuroporic recess (line d in fig. 

 55). The mole is conspicuous for the large volume of primordium hippocampi 

 which lies adjacent to the ventricle and lateral to the fornix and fimbria. 



