42 FLAGELLATE PROTOZOA 



relatively simple (acetates, etc.), but many parasites in the ali- 

 mentary canals of animals nourish themselves saprozoically on 

 the digested food of their holozoic hosts. 



FLAGELLATA 



In later chapters (pp. 65, 82), there will be found descriptions 

 of the organisms known as Trypanosoma and the Choanoflagellata, 

 which resemble those described in this chapter in the possession 

 of flagella and in certain other respects, and with them are classed 

 by zoologists as Flagellata or Mastigophora. 



