Plate I. 



Fig. 1. — Stenose yphus inabai. ox natural size. 



Fig. 2. — Peduncle of Stenose y 'phus inabai, showing its adhesive surface. 



Fig. 3. — Schizodiscus nagatensis. 2x natural size. Oral view. 



Fig. 4. — Schizodiscus nagatensis. 2x natural size. Aboral view. The 



peduncle is bent aside. 

 Fig. 5. — Peduncle of Schizodiscus nagatensis. Adhesive surface. 

 Fig. 6. — Gastral filament of Schizodiscus nagatensis. 

 Fig. 7. — Kuragea depressa. Natural size. 

 Fig. 8. — Microstylus setouchianus. -| natural size. 

 Fig. 9. — Longitudinal section of Microstylus setouchianus. The left half 



represents a section through a perradial plane, and the right half 



that through an interradial. 



