PROTOZOA 



.pst. 

 ^vest. 



Fig. I. Two species oi Acineta, x loo. After Saville-Kent. A, A. grandis, 

 B, yi. lemnarum. 



Fig. 2. Vorticella: a generalized figure of an individual, magnified, with a 

 portion of the stalk further enlarged, c.vac. contractile vacuole; ci. outer 

 ciliary wreath; ci/ inner wreath, of the peristome; cu. cuticle; f. vac. food 

 vacuole ; meg. meganucleus ; mi. micronucleus ; myn. myonemes of bell ; tnyn.^ 

 myoneme of stalk (containing elastic fibrils); pel. pellicle; ph. "pharynx" 

 (terminal portion of vestibule); ppvi. protoplasm of stalk; pst. peristome; 

 res. reservoir; u.nie. undulating membrane; vest, vestibule. 



