KOPOID AND SWEZY: UNARMORED DINOPLAGELLATA 105 



can not apply to the -Gyninodinioidae, nor to the deep-water, marine represent- 

 atives where the saprophytic mode of nutrition tends to prevail. 



Many other investigators have added details to our knowledge of the 

 speciation, organization and geographical distribution of the non-thecate dino- 

 flagellates, but further discussion of these will be reserved until the history of 

 each group or species is taken up. 



