Fig. 6. Section through two interstitial cells (I) and a cnidoblast (CB) 

 containing a nearly mature stenotele. A centriole (CE) may be seen in the 

 interstitial cell at the lower left. Note the centriole's radiating spokes. Mem- 

 bers of the outer (SP,) and inner (SP^.) groups of cnidocil (CD) supporting 

 structures may be seen. The cnidoblast cnidocil bears a resemblance to the 

 interstitial cell centriole. X17,000. 



144 



