Plate 1. 



Fig. 1. ffi/alonema paterifirum. Spinose diact from marginal fringe ; x 400. 



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



" 3. " " Dermal pinule ; x 400. 



" 4. " " Mesamphiflisc; x GOO. 



" 5. " " Macrampliiclisc ; x 400. 



" 6. " " Macramphidisc ; x 400. 



" 7. " " Macramphidisc ; x 400. 



" 8. " " Micro-oxyhexact ; x GOO. 



" 9. " " Micro-oxyhexact; x GOO. 



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



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



" 12. " " From a photograph ; |. 



" 13. " " From a photograph ; -,*„. 



