8 



PROTOZOAN TYPES 



1, Paramcecium ; 2, Coleps; 3, Didinium feeding on Paramoecium; 

 4, Clathrulina ; 5, a monad; 6, Volvox; 7, Stentor; 8, Stylonichia; 

 9, Peridinium; 10, Ceratium. 



Figs. 2 and 8 after Conn; 4 after Leidy; 5 and 7 after Edmondson; 

 9 modified from Schilling after Huitf eld-Kaas ; and 10 after Lankester; 

 the rest original; 3 from a preparation by Powers. 



91 



