9 8 



THE PROTOZOA 



forming a cleavage nucleus, which divides by mitosis, giving rise to 

 daughter-cysts. 





The conjugation of swarm-spores has been seen in a few cases. 

 In Vampyrella variabilis, the animal breaks up into swarm-spores 

 while encysted (Klein). These make their way out of the cyst to 



