CORALLUM OF TURBINARIA. 359 
The actual process is represented diagrammatically in figs. 3 to 
10; and fig. 5 may be taken instead of Mr. Bernard’s diagram 
i, Ys 
7 
Ah, 
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QC 
Ys 
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Fig. 1. Diagram of Madrepora showing the relationship of the parent calicle 
to the corallum, after Bernard, 
Fig. 2. Erroneous diagram of Turbinaria, after Bernard. 
Figs. 3-5. Diagrams illustrating the formation of a Turbinarian colony and 
the fate of the parent calicle. 
'[Figs. 1-5 are similarly shaded.] 
Figs. 6-10. Diagrams of successive transverse sections of the stem of a young 
corallum to illustrate the mode of budding. The calicles are similarly 
shaded in each diagram. 
(fig. 2) for comparison with that of Madrepora (fig. 1). It will 
be seen that the agreement between the two types is even closer 
than, was suggested by Mr. Bernard; the only difference being 
that while in Madrepora the parent polyp retains its axial 
