Sponges from South Australia. 



49 



1. Iteniericla. 



J 



f Subgroups. 

 I Cavernosa, 

 -i Compacta, 



Subcompacta, 



Laxa. 



2. Suberitida ■{ 15. 



I 16. 

 17. 



8. Ucccelonida (new family) 



Order Vf. HOLORHAPHTDOTA. 



Families. Groups. 



'^1. Amorphosa. 



2. Isodictyosa. 



3. Thaljosa. 



4. Crassa. 



5. Phloeodictyonina. 



6. Fibulifera. 



7. Ilalicliondrina. 



8. Ilyndmanina. 



9. Esperiua. 

 [ 10. Hymedesmina, 



11. Siiheritina, for 



12. Latrnnculina. 



13. PoJymnstina. 



14. Traclii/ijia. 

 Donatiua. 

 Axosina. 

 Xenospongina. 



18. Placospongina. 



19. Chondropsina (provisional). 



20. CUonina. 



21. Thoosaina. 



22. Alectonina. 

 \J2o. Samimna. 

 r24. Geodina. 



( 25. Stellettina. 



4. Pachytragida ■{ 2G. Stellettinopsina. 



I 27. Theneanina. 

 1^28. Tethyina. 



c r> 7. J 77-j. 129. Pachastrellina. 



5. Pachastrelhda j ,q Lithistina. 



!31. Spnngillina. 

 34. ParmuUna. 



Having already at p. 351 an tea, to avoid repetition indivi- 

 dually, premised the circumstances under which I should 

 describe the sponges of the order Echinonemata in Mr. Wilson's 

 collection generally, I have only to state here that the same 

 plan will be followed in describing those of the order Holo- 

 rhaphidota. 



Fam. 1. Renierida. 



Group 1. Amorphosa. 



1. Amorphina anonyma. 



Massive, thick, compressed, lobed, sessile ; truncated (? cut 



off by the dredge from tlie place of attachment) below. 



Consistence soft, loose. Colour not given, yellowish brown 



now. Surface smooth, covering a rough uneven structure 



below. Vents numerous, confined to the upper part. Spicules 



Ann. ds Mag. N. Hist. Ser. 5. Vol. xvii. 4 



