148 



PHYLUM PROTOZOA — THE SIMPLEST ANIMALS 



3\ 



UTU 



Fig. 69. 



I. Trypanosoma gambiense, showing nucleus (n.) ; blepharoplast (Bl.) ; 

 so-called kineto-nucleus {Bk.) ; undulating membrane (u.m.) ; free 

 end of flagellum (F/.). 

 IL Individual undergoing longitudinal fission. 

 III. and IV. Individual dividing into spores. 



