b-1 



IXDiLX. 



Xew families, 2, 3. 

 New genera described, 4. 



tal)le, -2. 

 Oseuhir collar defined, 5. 

 Oseulc defined, 5. 



„ closed in different ways, f.'). 

 Oscules, histology, 44. 

 Ostia defined, 5. 



., liistiiloiry, t4. 

 Ova, IS. 



„ duplicate, (i, 18. 

 pnllkan's, Meycqincjon, 4(t. 

 Ports defined, 5. 

 Pore defined, 5. 

 I'ores, histology, 44. 

 primujenia, Leucandra {Leucftta), 14. 

 jirimnrilialis, Clathrina (Ascet(ci), 6. 

 Prosopyles defined, 5. 



„ histology, 44. 



pmnila, Lc/icdltis, ref., 14. 

 Quadriradiates, turning round, 30, 47. 

 ran'piliis, Mc{inpngon, 38. 

 Refriugent spicules, 7, 9. 

 Reproduction, 48. 



Ivetieulated cortices in hrnudlrrlna, 21. 

 ■snilli, Triithronnilrs, In. 

 Spicules, histology, 45. 

 hair, 48. 

 folding, 45. 

 „ flattened, ls. 

 „ gainnia, 7, '.•, Ml. 

 „ how drawn, 15 

 „ jiosition in sponge, 4(i. 

 ,, tau, 40. 

 StiiuriirrlifipJikhe, delinilinu, 2'.'. 



,, new family, 2, 3. 



aiirplucuitus australis, 25. 



table, 2. 

 Sijcantha tenella, described, 4. 

 Syceltidae, 2, 9. 

 Tau spicules, 46. 

 Teruiinology, definitions, 5. 

 Teiilhrc/iodes antaniirm, '.), 12. 

 ,, scotU, 10. 



table, 2. 

 Thumb-shaped spicules, 4o. 

 villosus, Megapogon, 37. 



