t.c 



FIG. 147. Hormiphora plumosa, diagrammatic longitudinal (A) and transverse (B) sections. 

 The ectoderm is dotted, the endoderm striated, the mesogloea black, and the muscular axis of 

 the tentacles gray. Lettering as in Fig. 14(3, except ex. p., excretory pore. 



