DEVELOPMENT OF TAPE- WORMS. 



155 



througt multiplication by division of the nucleus (germi- 

 native cell). In the eggs of Tmnia lacillaris E. Van Beneden 



Pig. im.— Tcenia solium. Nat. size, 

 with the head magulfled. Strohila stage. 

 — After Beneden. 



Fig. 104.— Head and proglottis ot 

 T. solimn.— After Bcnedcu. 



saw the nucleus subdivide ; after passing through a morula 

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



