24 INTRODUCTION TO THE PROTOZOA 



once thought to be protozoa but now known to be otherwise are not included. Among these 

 are AnafilasDia, Eperyllirozooii and Haeniohartonella, all of which are rickettsiae; Bar- 

 tonella, which is a bacterium; and Pneumocystis, which is a yeast. 



Class MASTIGASIDA 



With 1 or more flagella. Nucleus vesicular. 



Subclass PHYTOMASTIGASINA 



Typically with chromatophores. Nutrition typically holophytic. 



Order CHRYSOMONADORIDA 



With 1 to 3 flagella. Chromatophores, if present, yellow, brown, 

 orange, or occasionally blue. Stored reserves include leucosin (pre- 

 sumably a polysaccharide) and lipids, but no starch. 



Suborder EUCHRYSOMONADORINA 



Flagellate stage dominant. Without siliceous skeleton or peri- 

 pheral zone of coccoliths. 



Family CHROMULINIDAE 

 With 1 flagellum. 



Caviomonas 



Oikomonas 



Sphaeromonas 



Family OCHROMONADIDAE 



With 1 long and 1 short flagellum. 



Monas 



Family PRYMNESIIDAE 

 With 3 flagella. 



Prymnesium 



