Fig. C. 



1-5, Noctiluca ?niliaris, from Kuhn (1921), after Pratje (1921), redrawn. 1, vegetative 

 individual; 2, binary fission; 3, multiple fission producing "swarmers"; 4, 5, enlarged 

 face and edge views of "swarmers." 6-8, Cerathiin hiriuidinella, formation of "zygote," 

 from Kuhn (1921), after Zederbauer (1904), redrawn. 9-12, four stages in the fusion 

 of gametes of Coccidinhmi vjesmli, a parasitic dinoflagcllate, from Chatton and 

 Biecheler (1936), redrawn. 



140 



