'PV 



TTUZOw 



l°m^A 



d^TTves. 



spg 



Fig. 8i. — Diagrams of transverse sections of a 

 sea-anemone. 



A., Through the gullet ; B, below the gullet. 



d.mes., ' directive ' mesentery ; ect., ectoderm ; ed.g., 

 ectoderm of gullet ; end., endoderm ; ent., enteron ; 

 gon., gonad ; g., gullet ; m./., mesenterial filament ; nius., 

 muscle ; spg., siphonoglyphs ; st.L, mesogloea ; i°mes., 

 2°mes., 3'^mes., primary, secondary, and tertiary 

 mesenteries. 



