154 A MONOGRAPH OF THE 



Htmeniacidon, Bowerbank. 



Section * Skeleton spicula, acerate. 



1. Hymeniacidon Thomasii, Bowerbank, 



2. — coccinea, Bowerbank. 



3. — Brettii, Bowerbank. 



4. — fragilis, Bowerbank. 



5. — /-e^icw/a^MS, Bowerbank. 



6. — fcdlaciosus, Bowerbank. 



7. — cdbescens,'Qoweihwk. 



8. — lactea, Bowerbank., 



9. — perarmatus, Bowerbank. 



10. — membrana, Bowerbank. 



Section * * Skeleton spicula, acuate. 



Sub-section A. Skeleton spicula, smooth. 



11. Hymeniacidon caruncula, Bowerbank. 



12. — sanguine a, Bowerbank. 



13. — mammeata,^ow&chmik. 



14. — eonsimilis, Bowerbank. 



15. — variantia, Bowerbank. 



16. — macilenta, Bowerbank. 



17. — f allow, Bowerbank. 



18. — umVfl^is, Bowerbank. 



19. — perlevis, Bowerbank. 



20. — aurea, Bowerbank. 



21 . — armatura, Bowerbank. 



22. — pachyderma, Bowerbank. 



23. — crustula, Bowerbank. 



24. — lingua, Bowerbank. 



25. — fioreum, Bowerbank. 



26. — virgultosa, Bowerbank. 



Sub-section B, Skeleton spicula, spinous. 



27. Hymeniacidon plumosa, Bowerbank. 



28. — jecusculum, Bowerbank. 



