II 



PHYLUM PROTOZOA 



71 



Hetcromita, e.g. (Fig. 57) the anterior flagellum (fl. 1) only is 

 used in progression, the second or ventral flagellum (fl. 2) is trailed 



4.MasMg- 



amoeba 



e.Dallingeria 



8.0ikomonas 



H.DInobryon 12,Syncrybfa 13. An 



H.Rhijjidodendron 



FIG. 52. Various forms of Flagellata. In 2, flagellate () and amoeboid (b) phases are 

 shown ; in 5, flagellate () and helio^oan (/;) phases ; in 8 are shown two stages in the in- 

 gestion of a food-particle (/)! ^''- chromatophores ; c. rac. contractile vacuole ;/*. food par- 

 ticle g. gullet; nm. nucleus ; 1. lorica ; p. protoplasm ; per, peristome ; v.i. vacuole of ingestion. 

 (Mostly from Btitschli's Protozoa, after various authors.) 



behind when the animal is swimming freely, or is used to anchor 

 it to various solid bodies. In some (Trypanosomes, Fig. 53) the 



