INTRODUCTION TO THE PROTOZOA 2S 



Order EUGLENORIDA 



With 1 to 4 flagella. Chromatophores, if present, green. 

 Stored reserves composed of paramylum. 



Suborder EUGLENORINA 



Pellicle rigid. Flagellar sheath not swollen at base. 

 Seldom holozoic. 



Family ASTASHDAE 



Without chromatophores or stigma. With 1 flagellum. 

 Body highly plastic, altho usually elongate spindle-shaped. 



Copromonas 



Order DINOFLAGELLORIDA 



With 2 flagella, 1 of which is transverse. Marine forms. 



Suborder GYMNODINIORINA 



Unarmored dinoflagellates (without theca). 



Family GYMNODINIIDAE 



With well-developed girdle and sulcus. Transverse fla- 

 gellum typically flattened. Tentacle and ocellus absent. 



Gymnodinium 



Suborder PERIDINIORINA 



With a theca of a cellulose-like material, composed of separate 

 plates. 



Family GONYAULACIDAE 



Thecal plates distinct. One antapical plate is characteristic. 



Gonyaulax 



