224 Frederick Chapman: 



Fig. 8. — M. progenitor, sp. nov. Vertical section through coral- 

 lites. Silurian (Yeringian). Cave Hill, Lilydale. R- 

 H. Annear coll. Nat. size. 



Plate X. 



Fig. 9. — Michelinia progenitor, sp. nov. Vertical section show- 

 ing infundibuliform tabulae. Silurian (Yeringian). Cave 

 Hill, Lilydale. R. H. Annear coll. x 3. 



Fig. 10. — Romingeria ramulosa, sp. nov. Corallum in mudstone.. 

 Silurian (Yeringian). Ruddock's Quarry, near Lily- 

 dale. Holotype. J. S. Green coll. Nat. size. 



Fig. 11. — R. ramulosa, sp. nov. Corallites weathered, in mud- 

 stone, showing perforated walls and impressions of tabu- 

 lae. Silurian (Yeringian).- Ruddock's Quarry, near 

 Lilydale. Paratype. W. J. Parr coll. x 10. 



Fig. 12. — R. ramulosa, sp. nov. Enlarged outline of corallum,. 

 seen in fig. 10. Silurian (Yeringian). Ruddock's Quarry,, 

 near Lilydale. x 2. 



Fig. 13. — R. ramulosa, sp. nov. Enlarged drawing of another 

 specimen from the same locality, showing three coral- 

 lites in verticil. Paratype. F. C. coll. x 2. 



Fig. 14. — Syringopora thomii, sp. nov. Corallum, weathered, in 

 grey limestone. Silurian (Yeringian.) Loyola, near 

 Mansfield. Holotype. Rev. Robert Thorn coll. Nat. size. 



Fig. 15. — >S\ thomii, sp. nov. Section across corallum. Silurian- 

 (Yeringian). Cave Hill, Lilydale. Paratype. C. S. 

 Buckley coll. Nat. size. 



Fig. 16. — 5. thomii. sp. nov. Section across corallite, showing- 

 dentate septa and curved tabulae. Silurian (Yeringian), 

 Loyola, near Mansfield. Tectotype. R. Thorn coll. x 10. 



Plate XL 



Fig. 17. — Aveolites victoriae, sp. nov. Vertical micro-section 

 showing irregular walls, large mural pores and thin 

 tabulae. Silurian (Yeringian). Cave Hill, Lilydale.. 

 Tectotype. x 16. 



Fig. 18. — A. victoriae, sp. nov. Transverse micro-section, show- 

 ing irregular, polygonal calices and thick tooth of ver- 

 tical ridge. Silurian (Yeringian). Cave Hill, Lilydale. 

 Tectotype. x 16. 



