Phoroni" 



'• Empty pKofet"ic cyst" 



Tomife 



young sanguicolous 

 trophont or 

 byper1"ropbon+- 



Grown sanguicolous tropbonf(byf3ertTopbont' or hypcrtDrrKjnn 



s^;^J^^ 





Grown exuvicolous '^ Hyperh)rT7.if-e or (^ k^ 



trophont >«ur^^^exuyicolous 



0^ 



O^ - 



tropbont" 



Figure 205. Synophrya hypertrophica. A, diagram of cycle of development as a para- 

 site of Portunus or Carcinus ; B-D, parasitized branchial lamellae of Portunus holsatus, 

 showing different types of reactional cysts. (After Chatton and Lwoff, 1935.) 



