C 



FIG. 113. A, Multicilia lacustris, after Lauterborn. fl., Flagella, one of which 

 is curled up into a loop ; ps., pseudopodium-like process ; N., one of the 

 nuclei (the others are hidden by the ingested food-masses) ; 0., ingested 

 Chlamydomonads ; c., chlorophyll-bodies, the remains of other Chlamydo 

 monads in process of digestion. D, Mvlticilia palitstris, after Penard. N., The 

 single central nucleus. 



