CHAPTER XVI. 



THE PROTOZOA. 



CLASSIFICATION OF PROTOZOA. 



Class 



Order 



Rhizopoda Gymnamoeba 



(Sarcodina) 



These throw out protoplas- 

 mic projections called pseudo- 

 podia. 



Flagellata 



(Mastigophora) 

 These move by means of 

 undulating membranes or 

 flagella. 



Infusoria Heterotricha 



(Ciliata) 



These have contractile vacu- 

 oles and numerous fine cilia 

 which are shorter than flagella 

 and have a sweeping stroke. 



Sporozoa 



These have no motile organs. 

 They live parasitically in the 

 cells or tissues of otlrer animals. 

 Reproduction by spores. 



Genus 



Entamoeba 



Leydenia 



Species 

 E. coli 



E. histolytica 

 E. tetragena 

 E. buccalis 



L. gemmipara 



Coccidiaria 



Eimeria 

 Isospora 



Haemosporidia Plasmodium 



E. stiedae 

 I. bigemina 



P. vivax 

 P. malarise 

 P. falciparum 



2l6 



