4° 



MANUAL OF ZOOLOGY 



the solid particles being then ingested in the soft protoplasm 

 between the base of the flagellum and that of the collar. 

 Both collar and flagellum may be withdrawn, and the animal 



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pass into an Amoeba-like or amxboid form. In another _ 

 group — the Dinoflagellata (Fig. 15) — there are two fla- 

 gella, one springing from a longitudinal groove extending 

 along the anterior half of the body, and the other lying in a 



