DESCRIPTION OF PLATE XXX. 
Rhizophyllum australe, Etheridge , fit. 
Fig. 1. The corallum, dorsal view, x 2. 
,, 2. „ ventral view, x 2. 
,, 3. „ lateral view, x 2. 
„ 4. Remains of an operculum, seen from above, x 2. 
,, 5. The corallum lateral view, displaying the vesicular tissue, x 2. 
„ 6. Section of the apex, showing the septa, cardinal septum and 
Rhizophyllum interpunctatum, De Koninclc. 
Fig. 7. The corallum, dorsal view, with the epitheca removed, displaying 
the infundibuliform layers of vesicular tissue, x 2. 
,, 10. The calice, filled with vesicular tissue, x 2. 
„ 11. Another calice, with the counter septum and worn septa exposed 
on the ventral wall, x 2. 
,, 12. The corallum, ventral view, showing the position of the counter 
septum, and transverse bands of growth, x 2. 
„ 13. A similar view, x 2. 
„ 14. Internal cast of the calice, ventral side, with the granulated entire 
septa, x 2. 
„ 15. The same seen from below, showing both the dorsal and ventra 
septa. 
Pal^aster meridionalis, Eth. fil. 
„ 16. Impression of the actinial surface, x 2. 
„ 17. Mould taken from specimen, x 2. 
vesicular tissue, x 3. 
ventral view, x 2. 
lateral view, x 2. 
