Plate 1. 



Fig. 1. Hyalonema paterifernvi. Spinose diact from marginal fringe ; x 400. 



" 2. " " Pinule from oscular (gastral) surface ; x 400. 



3. " " Dermal piniile ; x 400. 



4. " " Mesamphidisc ; x GOO. 



5. " " Macramphidisc ; x 400. 



6. " " Macramphidisc; X 400. 

 " 7. " " Macramphidisc ; x 400. 



8. " " Micro-oxyhexact ; x GOO. 



9. " " Micro-oxyhexact; x GOO. 



" 10. " " Amphidisc with 4-rayed umbels ; x 400. 



" 11. " " Amphidisc with 4-rayed umbels ; x 400. 



" 12. " " From a photograph ; f 



" 13. " " From a photograph ; i*^. 



