Plate XIV. Electron micrographs of striated roots of 

 metazoan cilia. 



(a) Longitudinal section of part of a ciliated cell from the 

 typhlosole of Elliptio. A striated root bifurcates just below 

 the basal body and runs deep into the cell. From Fawcett 

 (1958). X 60,000. 



{b) Longitudinal section of a small part of the root of a 

 locust scolopale cilium. The striation pattern can be sub- 

 divided into about six intraperiod bands. From Gray (1960). 

 X 50,000. 



{c) Longitudinal section of a short length of a ciliary rootlet 

 of Afiodonta. About twelve intraperiod striations appear to be 

 present in this case, and the striation pattern is polarized. 

 Some of the fine longitudinal filaments that make up the rootlet 

 are faintly visible. From Gibbons (1961b). x 175,000. 



