SPECIAL MORPHOLOGY AND TAXONOMY OF INFUSORIA 371 



The activities of the motile organs are coordinated through a 

 system of longitudinal and transverse fibrils connecting the basal 

 fibrillte coming from the cilia or groups of cilia (p. 108). A coor- 

 dinating center, termed the motorium, has been demonstrated in 



A/y 



Fig. 162. — Epistylisplicatilis. Longitudinal section of individual; MF., Myonemes 

 from membranelles to base of cell. (After Schroder.) 



some forms (Diplodinium, Sharp (1914); Euphtes Yocom, 1918; 

 Balantidium MacDonald (1922). 



Myonemes also are widely distributed in the group. In Stentor 

 they lie in superficial canals within the cortex and in some cases 

 appear to be conducting as well as contractile elements. In Epis- 



