FISHERY BULLETIN: VOL. 74, NO. 4 



Figure A.-Haloclava producta. A. Section through a retractor muscle. B. Section through the peripheral part of a 

 mesentery and adjacent parts of the body wall, ect-ectoderm, mgl-mesogloea, mgl pm-mesogloeal tract of parietal 

 muscle. 



864 



