HOW TOMITE MANUFACTURES TRICHOCYSTS 25 



'. \ A\ 



AVn^W 



V V 



Fig. 10. Foettingeria actiniarum. (a) Tomite, showing the small 

 trichocysts of the kinety 1 and the large trichocysts of the falciform 

 fields 8 and 9. (b) Young trophont (less than 14 days) ; no trichocysts 

 or trichites. (c) Old trophont (more than 16 days), showing the 



trichitosomes. 



