Subclass ACTINOPODA 



Pseudopodia formed by fine, semi-permanent rods with cytoplas- 

 mic cover 

 Order HELIOZOA 



Without internal capsule 



Common genera — Actinophrys Acanthocystis 



Actinosphaerium Clathrulina 



Order RADIOLARIA 



Body with a perforated internal capsule; marine 



Class SPOROZOA 



Parasitic; mature animal without locomotor apparatus 



Class CILIATA (or Infusoria) 



Possessing cilia or cirri (fused cilia) ; usually with macro- and micrO' 



nucleus 



Order HOLOTRICHA 



Cilia uniformly distributed over entire body surface; no adoral 



zone of membranellae 



Common genera — Spathidium J^assida 



Didmium Chdodonella 



Coleps Pciramecium 



Prorodon Colpoda 



Lacrymaria Frontonia 



Trachelophyllum Colpidium 



Amphileptus Urocentrum 



Ddeptus CycUdnim 



Loxodes 

 Order SPIROTRICHA 



Adoral zone of membranellae windmg clockwise; peristome not 

 extending beyond body surface 



Common genera — Bursaria Oxytricha 



Metopus Uroleptus 



Spirostomum Urostyla 



Bkpharisma Kerona 



Stentor Stylonychia 



Halteria Euplotes 



Order CHONOTRICHA 



Adoral zone winding clockwise; peristome extending beyond 

 body in funnel -shape; usually attached to aquatic animals 

 Common genus — Spirochona 

 Order PERITRICHA 



Adoral zone winding counter-clockwise; with an enlarged, disC' 

 like, ciliated anterior region 



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