18 



STRUCTURE 



OUTER FIBRE 



a- CENTRAL SHEATH 



CENTRAL FIBRE 



MID-FIBRE 



,UBFIBRE A -. 



SUBFIBRE B" 



RADIAL LINK 



MEMBRANE 



-ARM 



SECONDARY FIBRE 



6 -^==-^=^-5 

 BRIDGE 



Fig. 5. Details of structure seen in transverse sections of ciliary 



shafts (see text), a, Diagrammatic transverse section of a cilium 



of Anodotjta (from Gibbons, 1961b). 



b. 



Fig. 5b. Diagram of a cilium from a comb -plate of Mnemiopsis, 

 showing the way in which cilia are packed together (from 



Afzelius, 1960). 



