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HANDBOOK OF PROTOZOOLOGY 



about 13 microns long. Fully grown colony 350 microns high. 



Genus Spiromonas Perty. Body elongated; without gela- 

 tinous covering and spirally twisted; two flagella from the 

 anterior end. Solitary in fresh water. 



Spiromonas augusta (Dujardin) (Fig. 54, /). Body about 

 10 microns long. Stagnant water. 



Fig. 54 a. Amphimonas globosa. X400 (After Kent). 



b. Spongomonas tivella. X325 (After Stein). 



c. Cladomonas fruticulosa. X325 (After Stein). 



d, e. Rhipidodendron splendidum. (After Stein), d, a young 

 colony (X325); e, a free-swimming individual (X575). 



f. Spiromonas augusta. X750 (After Kent). 



g. Diplomita socialis. X750 (After Kent). 



Genus Diplomita Kent. With transparent lori-ca; body at- 

 tached to the bottom of the lorica by a retractile filamentous 

 process. A rudimentary stigma (?). Freshwater. 



Diplomita socialis Kent (Fig. 54, g). Pond water. Pale 

 brown or yellow. Lorica 15 microns long. 



Family 7 Monadidae Stein 



Two flagella unequal in length : one primary and the other 

 secondary. Motile or attached. One or two contractile vacuoles. 

 Colony formation frequent. Free-living. 



