BATTERSBYIA, PAL^OCYCLTJS, AND ASTERO SMILI A . 
649 
The specific determination is given more fully in the Monograph of the Devonian 
Corals (p. 213). Thus the septa are said to be somewhat unequal in size alternately, 
to be rather thick towards the wall, but very thin inwardly. The diameter of the 
largest corallite is pronounced to be above 1^ line. 
2. Battersbyia grand is, sp. nov. Plate XXXII. figs. 1 a- 1 d. 
The corallum is in fasciculate masses ; and the corallites are tall, and very close in 
some parts of it and rather distant in others ; they are very unequal in size. The calices 
are wanting ; but transverse sections prove the corallites to be generally circular in 
outline ; but they are often deformed, oval, and elliptical. The outline of the larger 
corallites is rendered irregular by the pressure of the growing buds ; and where the wall 
of the bud and that of the parent corallite touch, one is often absorbed. The wall is 
dense and not costulated, but it is thin in comparison with the diameter of the largest 
corallites. The septa are very thin, are alternately long and short, and are often wavy 
or curved ; they spring from the wall by wide wedge-shaped processes, and none of them 
reach the centre of the calice. The septa vary in number ; in the smallest corallites 
there is a confused tissue formed of vesicular endotheca, and a few rudimentary septa ; 
in other corallites, and as they increase in length, there are 12 to 16, 36 to 40, 46 to 52 
septa. The wedge-shaped origins of the septa are equal in perfect corallites ; and the 
axial space varies in diameter. The endotheca is greatly developed ; it is often as stout 
as the septa, and it forms a series of small vesicles placed one over the other, and side by 
side in the interlocular space. Each interseptal loculus contains many vesicles, so that 
a transverse section which cuts across the vesicles presents a series of concentric lines. 
There are no horizontal tabulae, nor do the vesicles cut off all below them on the same 
plane. There is no columella, and its space is occupied by a vesicular endotheca. 
There is no ccenenchyma. The diameter of the largest corallites is ^ inch, and of the 
smallest, with 12 to 16 septa, inch. The height of the corallites is several inches. 
Locality. Devonian limestones, Torquay. 
3. Battersbyia gemmans, sp. nov. P^ate XXXII. figs. 2 a- 2 d. 
The corallum is fasciculate, and the corallites are tall, very close and crowded ; they 
are very unequal in size. The wall is thin, and not always double when two corallites 
impinge, but in the buds and young corallites it is very thick ; in transverse outline 
the wall is oval, circular, and even polygonal. The septa are very thin, wavy, and arise 
from small wedge-shaped processes ; the septa are alternately very long and short, and 
they vary in number. In the largest calices there are thirty-two, and in the smallest 
there are six. The endotheca is highly developed ; the vesicles are small, and then- 
tissue is thicker than the septa. The budding is of two kinds: — 1. From the walls of 
corallites. These buds have either five septa or more ; and in the first instance budding 
takes place as follows. 2. From the interseptal spaces, so that five buds arise from 
each lateral bud whose septa are not more than six in number. The septa and the 
wall of each interlocular space develope other septa, and thus a very rapid budding is 
