232 



CCELENTERA TA. 



FiQ.llLCampanulnrfajohnstoni. (After Allman.) o, hydranth with hydrotheca; 

 6, retracted; rf, hydrocaulus; /, gonotheca, with blastostyle and medusa buds; 

 g, free medusa. 



. en 



FIG. 175. Section of Eudendrium ramnsum. ek, ectoderm; en, entoderm; p, perisarc; 



,s, supporting layer. 



