148 



THE PROTOZOA 



bundles, and there grows to adult size by absorbing food destined for 

 the muscles. When mature, it leaves the muscle-bundles and returns 

 to the lymph-spaces, where it sporulates (Fig. 81). 



D. Motion 



In addition to the amoeboid motion which has already been men- 

 tioned, there are various movements, due to the contraction of the 

 myonemes or of the entire ectoplasm. Among these may be men- 



if'M 



• m 



if 



! ! < ! 



1 \ t< • ?■ 5 • U 



• i ! I : : f v ; i 



y? 



^ 



c 



m ^ j 



<*ki.^/U£u 













Fig. 82. — Cortical modifications and movement of a gregarine. [SCHEWI AKOFF.] 

 ,4. Moving gregarine with paths of excreted granules. B and D. The same, mure highly mag- 

 nified. 6'and E. Details of structure, c, cortical plasm ; /, jelly-layer ; m, myoneme; J, secretion. 



