DEVELOPMENT OF TAPE-WORMS. 



155 



through multiplication by division of the nucleus (germi- 

 aative cell). In the eggs of Tcenia lacillaris E. Van Beneden 



Fig. 103. Tfenia folium. Nat. size, 

 with the head magnified. Strobila stage. 

 After Beneden. 



Fig. 104. Head and proglottis of 

 T. solium. After Beneden. 



saw the nucleus subdivide ; after passing through a morula 

 condition the cells are arranged in two layers, and the outer 



