374 



DONNELL BROOKS YOUNG 



The two aniicronucleate pieces died without regenerating. One 

 individual (no. 78) was cut into three pieces. The two end parts 

 which were small died very soon. The center piece, however, 

 completed its division and the halves regenerated in about 

 twelve hours. 



TABLE 8 

 Uronychia cut in mid-division 



TABLE 9 

 Uronychia setigera cut in late division 



