PLATE 2. 
Pig. 
1 . 
Alveolites alveolaris , De Ron. Portion of the weathered surface. X 2. 
Regan’s, Northern Railway. 
Pig. 
2. 
Do. 
Two corallites seen in longitudinal section, naturally weathered, 
with pores. X 25. 
Pig. 
3. 
Do. 
Transverse section, showing the form of the calice-mouths, and 
proportionate thickness of the walls, x 25. • 
Pig. 
3a. 
Do. 
Longitudinal section, with the position of the tabulae in the tubes, 
x 25. 
Fig. 
4. 
Do. 
var. queenslandensis, Eth. fil. and Poord. Transverse section, 
showing rather larger and more elongated calices. X 25. 
Fig. 
5. 
Do. 
do. Longitudinal section with pores and tabulae, x 25. 
Pig. 
6. 
Do. 
do. Another longitudinal section, with tabulae only, x 25. 
Fig. 
7. 
Amplexopora ? Iioninclii, Eth. til. and Poord. Portion of surface, with a 
series of calices. x 50. Northern Railway. 
Pig. 
8. 
Do. 
Transverse section, with spiniform corallites (acanthopores ?) X 50. 
Pig. 
9. 
Do. 
Another transverse section of a larger number of calices. x 25. 
Pig. 
10. 
Pachypora meridionalis, N. and E. Portion of a bifurcating branch. 
Arthur’s Creek. [B.M.] 
Pig. 
11. 
Do. 
Fragment of the surface, x 5. 
Pig. 
12. 
Do. 
Tangential section, showing the thickened walls of the corallites. 
x 10. 
Pig. 
13. 
Do. 
Longitudinal section, showing the same, x 10. 
Pig. 
14. 
Do. 
Weathered example, exhibiting the general appearance of the 
coral. Northern Railway. 
Pig. 
15. 
Do. 
Longitudinal view from a polished section. 
Pig. 
1G. 
TTndescribed Coral. Weathered surface. Beacousfield. 
Pig. 
17. 
Do. 
Surface enlarged to show form of corallites, and apparent fission 
as in the genus Chcetetes. x 4. 
Pig. 
18. 
Ccenites, 
sp. ind. Portion of a foliated coral! urn. Northern Railway. 
Pig. 
19. 
Do. 
Calices enlarged, x 4. 
