FtG. 117.- 



-Diagrains of transverse sections of a 

 sea-anemone. 



A . , Through the gullet ; 2?, below the gullet. 



d.ntes., " directive " mesentery ; ect., ectoderm, end., en- 

 doderm ; enf., enteron ; »/./., mesenterial filament; tmts., 

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

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

 mesenteries. 



185 



