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this phenomenon takes place here in quite the same way as in 
the larger Fungiae, e. g. in F. actiniformis and F. fungites. 
One specimen shows the beginning of the regeneration of a 
broken corallum into a circular form. Somewhat more than half 
of the original corallum is lost, the greater part of the axial fossa 
is yet present. The regeneration is in an early stage: only a small 
border has originated along the fracture. The new-formed septa (and 
costae) near the axial fossa are radially arranged around the mouth; 
the other new septa have grown together with the larger septa 
of the original part of the corallum. They are sometimes nearly 
at right angles to the larger septa. Probably the greater part of 
this regenerated specimen is itself also the result of a previous 
regeneration as may be concluded from a ridge at the under sur- 
face from which the costae to a certain degree diverge towards 
either side. The septal arrangement at the corresponding part also 
gives an indication as to the previous regeneration. In another 
specimen (fig. 21) a small sector has regenerated into an oval 
shaped corallum with an excentric mouth. The marginal parts of 
the septa and costae are distinctly arranged in a radial manner 
around the central part of the corallum.. Many of them are curved 
at the point where the regeneration has begun and they represent 
therefore some irregularities. The ultimate result of this manner 
of regeneration is a completely circular stage. One specimen in 
the collection has regenerated from about one half of a broken 
corallum as is indicated by a ridge at the lower surface. The upper 
surface is only slightly irregular owing to the regeneration, which 
t 
manifests itself in the somewhat curved shape of some of the septa. 
The corallum now has a neatly circular shape and its upper surface 
hardly shows any differences from quite normal specimens. 
In the above-mentioned specimens no fissures between different 
regenerated lobes are present and even the marginal part possesses 
no notches as in Diaseris-forms. In other regenerating specimens 
the lobes are less solidly fused and therefore the corallum has a 
much more Diaseris-Viko appearance. The specimen of fig. 12 has 
regenerated from a very small fragment, from which at the central 
parts (next to the axial fossa) three large lobes have grown out, 
which are only separated by sutures. At the margin of the corallum 
notches are to be seen between these lobes. There are in the 
