ACTINOZOA 



i6s 



mes.dir. 



mesl 



mes.dir. 



m.l. 



mes.dir. 

 mes.fi I. 



Fig. 136. Diagrammatic transverse section of corals and sea anemones. 

 A, Alcyoniiim. B, Peachia. C, Edwardsia. D, Aulactinia. E, Typical actinian 

 m the region of the oesophagus. F, Alcyonium below the oesophagus. 

 mes.^, primary mesentery; mes.dir. directive mesenteries; mes.^-, mes.^, mes.^, 

 secondary, tertiary and quaternary mesenteries; mes.fil. ciliated mesenteric 

 filaments; m.l. longitudinal muscle; ov. ovaries; sip. siphonoglyph ; sip.' 

 sulculus. 



