PLATE VI. 



FIGS. 



1-3. Mastigamoeba aspera F. E. Sch. (p. 70) Fig. 1. 

 Ordinary appearance of an adult during forward 

 movement Pond at Chelford, Cheshire. Fig. 2. 

 An individual which, after passing through a variety 

 of mutations, ejected a quantity of effete matter at 

 the point a. The flagellum is not visible, though in 

 the normal state it was distinctly seen (as in fig. 1). 

 Fearnhead, Lancashire. Fig. 3. A smaller example 

 showing variation from the type. All x 400. 



4. M. aspera var. cestriensis Cash. (p. 72) Noi'theii 



Etchells, Cheshire, x 400. 



5. M. aspera. An attitude not infrequently assumed when 



the animal is resting, showing a resemblance to some 

 figures of DactylospJiseriitm vitreum Hertw. & Less. 

 Chelford, Cheshire, x 400. 



6. M. ramulosa Kent. (p. 73) Typical form, after Saville 



Kent, x 400. 



