GENUS: HETEROMITA 299 



rounded individuals with or without flagella. Encystment in spherical 

 cysts occurs. The genus Cercomonas (see p. 629) contains flagellates of 



Fig. 142. — Heteromita uncinata from Culture on Agar ( x 4,000). 

 (Original from Life.) 



1-7. Vari(nis types of flagellate with single nucleus, and contractile vacuole. 

 S. BinucleatVd dividing form. " 9. Trinucleated form with three contractile vacuoles. 



1(». Multinucliatcd form with many contractile vacuoles. 

 11. Form without llagella (five nuclei). 



very similar structure, except that the axoneme of the trailing flagellum 

 passes over the surface of the body from the anterior to the posterior end 



