262 



C(ELENTERATA. 



FIG. 221B. 



FIG. 219. Swimming plate and epithelial cushion. (After Chun.) 



FIG. 220. Hormiphora plumosa. (After Chun.) 



FIG. %%,l.-PleurobracMarho<lodactyla. (After Chun.) A, aboral pole; #, front, C, side 

 view. MM, sagittal axis ; 7T, transverse axis ; c.adr, radial vessel ; c.ir, inter- 

 radial vessel; c.pr, right and left gastrovascular trunks; ex, opening of funnel 

 vessel ; <;, subcostal vessel ; m, ' stomach ' ; mq, paragastric canals ; ?i, ciliated 

 grooves ; DC, sense body ; o, mouth ; 01% ovary ; p, pole-plate ; r.r 3 , rows of combs ; 

 sc/i, tentacular pouch ; scfcs, its aperture ; sp, testes ; /&, basis of tentacle ; tg. sc7i, 

 tentacular canal; ti\ funnel; trg, funnel canal. 



