189 
where also the young stages which had but recently detached 
themselves from their stalk are described. As among the large 
material there are several specimens showing phenomena of bud¬ 
ding, fission or regeneration, some of these may be described here 
at some length. 
In the collection there are a number of specimens in which a 
portion of the living tissues had died off, whilst buds had developed 
from the remnants of the living parts of the corallum. Some very 
young stages of these buds are found in one specimen of which 
only a small portion of the upper surface has lost its soft parts. 
Beneath this dead portion ten buds have grown out, three of which 
were still surrounded by the living tissues of the mother-corallum. 
From the remaining portion the soft parts must have but recently 
died, as the corallum is not yet overgrown with foreign organisms. 
In the youngest bud of this specimen, which has a diameter of 
about half a mm, the theca is well-developed; one septum is visible 
and traces of a second one next to the first. A slightly more 
developed bud possesses the six septa of the first cycle, inserted 
at equal distances on the theca. Here also the columella has made 
its appearance as small excrescences from the basal parts of the 
bud. One side of the theca of this bud is somewhat irregular, as 
a double wall seems to have developed in one place. In the larger 
buds the further stages of development are visible, some of them 
having two complete cycles of septa, whilst in the largest one in 
this specimen (measuring 2 mm in diameter) the third cycle is 
nearly complete. 
The largest bud in my material, developed in this way (fig 8), 
has live complete cycles and a few septa of the sixth cycle, its 
greater diameter being 19 mm. This bud was still attached with a 
short stalk to the old corallum, though it had already surpassed 
the stage in which the buds which have developed from planulae 
fall off from their anthocaulus. Its costae are stronger developed than 
in normal anthocyathi of the same size. The same phenomenon is 
found in buds developing in this way in Fungia fungites: these 
have also more prominent costae provided with stronger spines 
than those in anthocyathi of equal size developed from planulae. 
In the above specimens only a small portion of the corallum 
died and only a few buds arose from the remnants of the tissues 
