79 



--AMR 



Ect 



FIG. 29. Transverse section through the anterior end of an egg, Stage 

 VII, passing in front of the rudiment of the stomodaeum, showing the 

 procephalic lobes (ProL), anterior mesenteron rudiment (AMR}, and 

 amnion (Am), x 243. 



.AMR 



Am 



Meso 



FIG. 30. Transverse section through the anterior end of an egg, Stage 

 VII, passing just caudad of the rudiment of the stomodaeum, showing 

 the procephalic lobes (ProL), anterior mesenteron rudiment (AMR), 

 mesoderm (Meso) and amnion (Am), also the remains of the cephalo- 

 dorsal 'body (CB), x 243. 



