CLASSIFIED LIST. 11 



Sub-section B. Spicula spinous acnate. Dermal spicula dispersed. 



40. Halichondria granulata. 



Section ****. Skeleton spicula spinulate. 



41 . Halichondria farinaria. | 42. Halichondria inornata. 



Genus XXII. ISODICTYA. 

 Section *. Skeleton spicula acerate. 



Sub-section A. Dermal membrane aspiculous. Primary skeleton filnvs 



unispiculons. 



1. Isodictya cinerea. 

 '_'. ., permollis. 

 3. manimeata. 



4. Isodictya raniusculus. 



5. ferula. 



Sub-section B. Dermis aspiculous. Skeleton bi- or trispiculous. 



6. Isodictya rosea. 



7. py gin : r:i. 



8. Isodictya obscura. 



Sub-section 0. Dermal membrane aspiculous. Skeleton : primary 



nbi'es multispiculons. 



9. Isodictya iudefinita. 



10. ,, indistincta. 



11. ,, simplex. 



12. s , pocilluni. 



13. Isodictya luteosa. 

 ?14. ,, anomala (dermal 

 membrane unknown ) . 

 ?15. ,, parasitica (do.). 



Sub-section D. Dermal membrane spiculo-reticulated. Skeleton 

 primary fibres unispiculous. 



16. Isodictya Peacliii. 



17. varians. 



18. Isodictya elegans. 



19. fallax. 



Sub-section E. Dermal membrane spiculo-reticulated. Skeleton 

 primary lines bi- or trispiculous. 



20. Isodictya MacAndrewii. 



21. fistulosa. 



22. dichotoma. 



23. Isodictya perplexa. 



24. densa. 



25. Gresorii. 



