478 PROF. A. DENDY AND MISS L. M. FREDERICK ON 
Family Lelapiid^. 
10. Lelapia antiqva n. sp. 
Order TETRAXONIDA. 
ISnb-order Homosclkrophora. 
Family Plakinid^e. 
11. Dercitopsis minor Dendy. 
12. Dercilopsis mammillaris (Lendenfeld). 
Sub-order Astrotetraxonida. 
Family Stellettid^. 
13. Stelletta hrevis Hentschel. 
14. Stelletta deUlis Thiele. 
15. Stelletta sigmatrnaina Lendenfeld. 
16. Ancorina australiensis (Carter). 
17. Ancorina brevidens n. sp, 
18. Auro7'a rotoi Dendy. 
19. Asteropus simplex (Carter). 
Family Erylid^. 
20. Erylus proximus Dendy. 
Family Donatiid^. 
21. Donatia robusta (Bowerbank). 
22. Donatia m.idtistella (Lendenfeld). 
Family Chondrosiid^. 
23. Chondrilla australiensis Carter. 
Sub-order Sigmatotetraxonida. 
Fami)}^ HAPLOSCLERIDiE. 
24. Reniera aguceductus Schmidt. 
25. Reniera eribricutis Dendy. 
26. Reniera permollis (Bowerbank). 
Reniera spp. 
27. Petrosia dura (Nardo) Vosmaer. 
28. Halichondria phakellioides n. sp. 
29. C halina palmata {hamarck). 
Chalina sp. 
Facliyclialina sp. 
30. Ceranchalina multiformis var. manaarensis Dendy. 
31. Phlceodicti/on abrolliosensis n. sp. 
