Figure 204. Contdiophrys pilisuctor on Corophium acherusicum. A, trophonts on 

 appendage of the amphipod host, attached to hairs ; B, trophont at beginning of re- 

 productive period ; C, trophont that has formed two tomites, and third forming ; D, large 

 trophont with eleven tomites, and a twelfth forming, the distal seven degenerated; 

 E, unattached tomite; F, tomite impaled on a hair by its cytostome; G, young trophont, 

 cilia lost. (After Chatton and Lwoff, 1936a.) 



