Plate 2. 



Fig. 5. Hormiphora plumosa. Specimen from Tortugas, Florida, 



May 29, 1906. 

 Fig. 6. Surface view of apical pole-plate showing lithocyst. ex, 



excretory pores; n, sensory tracts from sense-organs to 



rows of combs; ts, openings of tentacle sheaths. 

 Fig. 7. Side view of apical sense-organ. 

 Fig. 8. View of tentacle. 8a. Enlarged view of appendages on base 



of tentacle. 



Drawn from life, by the author. 



