EXPLANATION OF PLATE VIII. 
Columnopora pauciseptata, Eth. Fil. 
Fig. 1. The corallum seen from above. 
„ 2. The same, from one side, showing superimposed colonies. 
„ 3. Three calices exhibiting the septa. X 10. 
„ 4. A transverse section of several corallites, showing the thickened 
walls, primary and secondary septa, and absence of pores of 
communication. X 17. 
„ 5. A transverse section of a single corallite. X 30. 
,, 6. A transverse section of another corallite with the walls still more 
thickened, and the septa club-shaped distally. X 30. 
,, 7. A vertical section of several corallites, exhibiting old visceral 
chambers, thickened walls, and tabulae. X 10. 
