PLATE 1. 
Kg- 1. 
Pig. 2. 
Pig. 3. 
Pig. 4. 
Pig. 5. 
Pig. 6. 
Pig. 7. 
Pig. 8. 
Pig. 9. 
Pig. 10. 
Pig. 11. 
Pig. 12. 
Pig. 13. 
Pig. 14. 
Pig. 15. 
Pig. 16. 
Pig. 17. 
Pig. 18. 
Stromatoporella, sp. ind. Vertical section. xl2. Eeid Limestone, Northern 
Bailway. 
Do. , Tangential section, x 12. 
Stromatopom, sp. ind. Portion of a weathered surface, with button-shaped 
prominences. Eeid Gap. 
Do. Vertical section of the same, x 12. 
Do. Tangential section of the same. X 12. 
Heliolites porosa , Goidf. A highly weathered fragment, with the calices, 
septa, and coenenehyma beautifully shown. X 2. Eoid Gap. 
Heliolites Daintreei, N. and E. A fragment showing the relative proportions 
and form of the corallites. Broken Biver Limestone. [B.M.] 
Do. Transverse section, with the calices, septa, and copious coenenehyma. 
x 5. 
Heliolites plasmoporoicles , N. and E. Transverse section, with calices and 
limited coenenchymal tubuli. Broken Eiver Limestone. 
[B.M.] 
Do. Portion of same. X 5. 
Do. Vertical section, with the Heliolite-like tabulae in the tubuli. x5. 
Heliolites Nicliolsoni, Eth. fil. Transverse section, showing the large number 
of small coenenchymal tubuli. x 4. Broken Eiver Lime- 
stone. [B.M.] 
Alveolites robmtus, Bominger? Portion of a bifurcating branch. Broken 
Eiver Limestone. [B.M.] 
Do. Portion of the weathered surface, x 4. 
Alveolites , sp. ind. Several calices of a lobate or palmate form. x6. 
Arthur’s Creek. [B.M.] 
Do. Vertical section of a part of the corallum, showing the irregular 
walls and numerous tabulae, x 6. 
Do. Horizontal section, exhibiting the thin walls of the corallites. x 6. 
JRomingeria ? Foonlii, Eth. fil. Eamose corallum, with subalternate tubular 
corallites. X If. Eeid Gap. 
