338 PROTOZOOLOGY 



the caecal smears of wild ring-neck pheasants and of chicks. The 

 organisms measured 5-30^ in diameter and possessed 1-4 flagella, 

 though often there were no flagella. 



Genus Rhizomastix Alexeieff. Body amoeboid; nucleus central: 

 blepharoplast located between nucleus and posterior end; a long 

 fiber runs from it to anterior end and continues into the flagellum; 

 without contractile vacuole; division in spherical cyst. 



R. gracilis A. (Fig. 136, g). 8-14ju long; flagellum 20/x long; in 

 intestine of axolotles and tipulid larvae. 



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