6G 



ZOOLOGY 



SECT. 



Anterior and posterior ends are always distinguishable, the flagella 

 being directed forwards in swimming, and, as a rule, dorsal and 



3.Asrasiof>is 



2 Oikomonas (?) 



II.DJnobpyon 12. Sy ncry |>ra 13. An^ho|)hysa 14.Rhi|>idodendron 



FIG. 47. Various forms of Plagellata. In S, flagellate (a) and amoeboid (6) phases are 

 shown ; in 5, flagellate (a) and helizoaii (I) phases ; in 8 are shown two stages in the in- 

 gestion of a food particle (/.) ; c/r*\ chromatophores ; c. vac. contractile vacuole ; /. food par- 

 ticle (j. gullet; n u. nucleus ; 1. lorica ; p. protoplasm ; per. peristome ; v.i. vacuole of ingestion. 

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



ventral surfaces can be distinguished by the presence of a mouth 

 or by an additional flagellum on the ventral side. They are, 



