Vorticellas attached by their long, coihng stalks to a piece of plant debris. (P. S. Tice) 



ocysts. During one of these uneven battles between 

 suctorians and their victims, another observer once 

 saw a stylonychia achieve a partial triumph. It un- 

 derwent fission and one of the daughters escaped! 

 Dendrosoma is a branching suctorian that has been 

 found on many aquatic plants, rotifers, bryozoans. 



and crayfishes in fresh waters. When suctorians di- 

 vide asexually they may split into two equal daugh- 

 ters or may bud off small individuals that swim about 

 by cilia, then settle down, lose the cilia, and grow to 

 full size. The process of sexual reproduction involves 

 conjugation. 



[55 



