usually in Fungia, but nearest to the anterior and posterior septa 
of the first cycle the septa of the higher cycles develop before 
those of the same cycle in the other half of the same sector. 
During further growth of the corallum septa of higher cycles are 
permanently formed nearest to the septa of the first cycle in the 
long axis of the corallum, whilst the increase in size proceeds 
chiefly in the anterior and posterior direction. After some time the 
original single axial fossa is divided into different parts by the 
fusion of two opposite septa across it. The central parts of the 
septa of each secondary mouth become more or less radially arran- 
ged around it. 
In specimens of about 120 mm greater diameter the first traces 
of the formation of secondary calicles at the lateral parts of the 
corallum are visible. These secondary calicles are at first very 
indistinct but in the course of further growth the radial arrange¬ 
ment of the septa becomes more pronounced and the centre deepens. 
The general shape of the corallum of Herpolitha Umax is very 
variable as appears from the following examples: The measuremenls 
of two specimens in which no traces of former regeneration can 
be found are: length 207 mm; breadth (in the central part) 89 
mm, height (in the central part) 51 mm, and length 195 mm, 
breadth 56 mm and height 39 mm. The dimensions of the longest 
specimen in the collection are: length 353 mm, breadth 68 mm 
and height 60 mm. There are yet some apparently much older 
ones which have broken into fragments and afterwards have 
regenerated. The breadth of two of these coralla is 86 and 110 
mm, their height respectively 91 and 95 mm. These specimens 
are strongly trough-shaped. 
Regenerated specimens are usually at first sight recognisable 
by their irregular form. In the regenerated parts the chief septa 
often have a direction at right angles to that of the chief septa 
of the original fragment. The regular axial fossa is often wanting 
in the regenerated parts. 
Phenomena of budding at the lower surface of the corallum 
are also in this species often connected with previous fracture and 
regeneration of the disc. In one specimen two stages of these buds 
have developed. A part of the disc had lost its living tissue and 
was overgrown with algae. At the margin of the dead portion the 
