CORAL FAUNA OF HALDON, DEVONSHIRE. 93 
deep, and there is no columella or barely the vestige of one. The 
septa are usually 24 in number; and the costex are close, subequal, 
long, thin, and much more numerous than the septa, two or three 
uniting to form the septum. The trabeculz are well developed. 
There are 48 cost, as a rule, and others which are on the collines 
besides, to each ordinary calice. Breadth of calice 5-42, inch. 
Loc. Haldon Greensand. In the collection of W. Vicary, Hsq., 
F.G.S., Exeter. 
Subfamily TURBINARIN#, Kdw. & H. 
ACTINACIS STELLULATA, sp. nov. (PI. VIII. fig. 7.) 
The corallum is incrusting and moderately thick. The ccenen- 
chyma is well developed, and separates the calices, which are 
circular in outline, shallow, and not well defined on account of the 
continuation of the septo-costal system into neighbouring calices. 
The columella is small, but distinct. The pali connect twelve septa 
with the columella, and are subequal. There are two cycles of 
septa, and the lamine, as well as the costal prolongations, are tra- 
becular, and there are stout, low, long, broad and rounded spines on 
their free upper surface. The intercalicular space is covered with 
cost ; thin ornamented and intercostal spaces. The breadth of two 
calices and an interspace is ;4, of an inch. 
_ Loc. Haldon Greensand. In the collection of W. Vicary, Esq., 
F.G.8., Exeter. 
ACTINACIS INSIGNIS, sp. noy. (PI. VIII. fig. 8.) 
The corallum is flat, low, and incrusting. The septa, from 12-18 
in number, unite by their pali in an axial ring. The coste, more 
numerous than the septa, are crowded, and are joined by synapti- 
cule. The septa are minutely trabecular. Breadth of calice about 
=, inch. 
** Loc. Haldon Greensand. In the collection of W. Vicary, Esq., 
F.G.8., Exeter. 
Section Srmpxicus. 
TROCHOSERIS CONSTRICTA, sp. nov. (PI. VIII. figs. 11 & 12.) 
The corallum is straight and constricted between the broad base 
and the equally broad and widely open shallow calice. The coste 
are small, very numerous, close, slightly unequal, largely granulate, 
and projecting outwards at the margin, where they are largest. 
The septa are numerous (120), close, arched, long; the higher orders 
unite with the next,and these with the tertiary, forming groups. 
The primary septa are separate, and many septa dip into the shallow 
axial space. The synapticule are rare; the columella is very small 
and papillary. The length of the corallum is 55, and the breadth 
=>, inch. 
"Loc. Haldon Greensand. In the collection of W. Vicary, Esq., 
F.G.8., Exeter. 
