fierc ex* so 



adxc 



S.pl 



std.c 



std 



rritk 



t.c 



inf 



FIG. 1(50. Ilorniiplicra plume sa, 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. 15'J, except ex. p. excretory pore. 



