DERIVED ORGANIZATION 



117 



complex to justify the term neuromotor system of Sharp and Kofoid 

 and appear to form a coordinated whole, as shown by the reaction 

 after maceration when they retain their connections and remain 

 together for some time after the supporting protoplasm has disap- 

 peared (Trichomonas, Kofoid). The term is certainly justified in 

 connection with the remarkable kinetic structures of flagellates 

 belonging to the family Trichonymphidae. In Trichonympha cam- 

 panula, Kofoid and Swezy (1919) describe the system as composed 

 of an external coating of cilia-like motile organs, three zones of 



Fig. 63. — Calonympha grassii Foa. (From Doflein.) 



flagella with their basal bodies, rhizoplasts connecting basal bodies 

 with a great anteriorly placed blepharoplast, and more deeply-lying 

 myonemes which apparently are not connected with the blepharo- 

 plast (Fig. 64). Kofoid and Swezy regard the central organoid as a 

 kind of superblepharoplast, calling it the "centroblepharoplast" since 

 it has the attributes of a centrosome. When it divides the entire 

 aggregate of kinetic elements of the cortical zone divides with it, 

 forming a mitotic figure with centrosomes, central spindle and astral 

 rays (Fig. 54). The connecting fibrils of the centrosomes, unlike 



