corals will remain circular and these specimens then present a case 
of transition of a Diaseris-m\o a Cy doser is-{ovm. 
Sometimes, when the mouth has lost its living tissue (e. g. 
caused by a parasite) some smaller septa are tormed in the region 
nearest to the old mouth, constituting a ridge that separates the 
dead portion from the living one (fig. 55). A new mouth then 
arises between the new septa and the old ones and afterwards the 
new septa may grow out further and cover the old dead mouth. 
In some cases this process leads to an abnormal protrusion over a 
part of the corallum by means of which it looks like a double 
corallum (fig. 61). In this specimen the original mouth has altogether 
vanished as it is wholly overgrown by the new-formed portion, 
and two new secondary mouths have developed. 
In the specimen of fig. 62 the two parts that are growing out 
from the central part of a large fragment are of an unusual shape. 
Between them a kind of ridge is visible and the septa of each 
lobe are arranged more or less at right angles with this ridge. 
In each of the smaller lobes a new mouth is formed. 
In some specimens the old mouth has undergone fission by 
means of a septum that has enlarged itself and that divides the 
mouth into two halves (fig. 58). Afterwards small new septa can 
be formed in the region that separates the two mouths, so that 
they come to be situated at a short distance from each other 
(fig. 63). 
Some of the specimens of Stat. 19 are much thinner than usual 
and they therefore remind us in some respects of F. fragilis. This 
likeness, however, is but very superficial: all other characteristics 
are as many indications that the specimens belong to F. distorta. 
Fungia somevvillei Gardiner 1909. 
(Fl. VI, fig. 65). 
Localiiy: Dr. M o rt e n s e n’s Pacific Exp.: Offjolo, Sulu Islands, ca. 
45 m, 1 ex. 
The specimen (fig. 65) has the following dimensions: length 95 
mm, breadth 77 mm, height 22 mm. It is about 5 mm thick at 
its margin by 17 mm in the centre. The septa are comparatively 
thin, the costae very fine and low, they extend as in the type- 
