722 PATHOGENIC PROTOZOA 



CLASS III. SPOROZOA. They live parasitically in the tissues of other 

 animals, ingesting food by osmosis ; they have no cilia in the adult 

 stage but may form pseudopodia, one or more nuclei, no contractile 

 vacuole, reproduction by spores. They are divided into two sub- 

 classes, telosporidia and neosporidia. Examples, gregarinida, coc- 

 cidiidea, hemosporidia, sarcosporidia, etc. 



CLASS TV. INFUSORIA (Ciliata). The body is generally uniform in 

 shape, with cilia and contractile vacuole, and usually with macro- 

 and micronucleus. Examples, paramechim, ~balantidmm. 



