6 MORPHOGENESIS IN CILIATES 



of the centriole of earlier cell generations^ probably back to 

 the egg. 



In the flagellates, the flagellum arises from a granule 



Fig. 1. Aspects of kinetosomes. (a) The kinetosomes of kinety a of 

 Gymnodinioides (tomont) dividing in order to form kinety b. (b) The 

 kinetosomes of kinety 1 of Foettingena (tomont) producing kinety a. 

 (c) Kineties of Gymnodi7iioides (tomite), showing the kinetosomes (c.) 

 at the left (right of the observer) of the kinetodesma (cd.). Each 

 kinetosome has a large satellite corpuscle and is connected by a desmose 

 to a daughter kinetosome (tc.) which is a trichocystosome, (d) Kinety 

 of Polyspira (protomont), showing the formation of trichocysts (t.) 

 from the trichocystosomes (tc). (e) Last division of Foettingeria. 

 Formation of the kinetosomes of the future kineties b and c by 



the kinetosome of kinety a. 



called a blepharoplast or kinetosome. In some cases, this 

 kinetosome participates in the nuclear division, but this 

 participation is often unnecessary. In many cases, the nu- 

 cleus and kinetosome divide independently. 



