HOLOTRICHA 



569 



Fig. 258. a, Foettingeria actiniarum, a trophont; b, Spirophrya 

 suparasitica, a trophont, XlOOO; c, Phoretrophrya nebaliae, X1180; 

 d, Synophrya hypertrophica (All, Chatton and Lwoff). 



approach each other in posterior-dorsal region; phoronts at- 

 tached to a crustacean; when eaten by Cladonema, trophonts 

 enter the crustacean body and complete growth; protomonts up- 

 on leaving the host body encyst and each divides into 4-82 to- 

 mites (Fig. 257). One species. 



S. suhparasitica C. et L. (Figs. 257; 258, 6). Phoronts attached 



