298 Dr. P.M. Duncan on some Fossil Corals from Sinde. 
1. Trochocyathus sinuosus, Edwards & Haime. 
A young specimen of this gigantic species is amongst the 
Sinde Collection in the British Museum. Locality, Kurrachee. 
European localities, La Palarea, Vicentin, Corbiéres (Eocene). 
2. Oculina Halensis, n. sp. Pl. XVIII. fig. 1. 
Corallum branching, the terminal branches being straight, 
tapering, and cylindrical. The calices are very prominent, and 
project obliquely ; they are arranged in four parallel series, two 
being on opposite sides of the corallum. The calices of the 
opposite series are on the same level, and those of the inter- 
mediate pair are midway ; consequently there is more or less of 
a spiral distribution. The calicular edges are rather sharp, and 
the coste are continued down the projection, but not on to the 
coenenchyma, which is faintly granular. The septa are small, 
and form six systems; there are three cycles generally. The 
lamin are barely exsert, and the primary septa are stout. The 
pali are very small, being appended to the first and second orders 
of septa. The columella is small. Occasionally there is a fissi- 
parous growth. Diameter of branches ;4;—;%; inch. Projection 
of calices =!;—=!; inch; breadth of calices =,—-+; inch. 
Locality, Sinde Tertiaries. Coll. Geol. Soe. 
This species, from its granular coenenchyma and short costal 
striz, is more closely allied to the Eocene Oculina conferta than 
to any others of the genus; but the shape of the corallum and the 
lateral and very prominent calices are sufficient. to distmguish 
the new species from any other; but they bring it into alliance 
with forms later than the Kocene. 
3. Phyllocenia conferta, n.sp. Pl. XVIII. fig. 2. 
The corallum is flat, slightly convex above and gibbous below. 
The corallites are short, distinct, crowded, occasionally deformed, 
and generally variable in size. The calices are circular or ellip- 
tical, and irregular in shape; they are barely exsert, are very 
shallow, differ in size, but have well-developed costa, feebly de- 
veloped septa, and rudimentary columelle. There is a small 
amount of coenenchyma between some corallites. The costz are 
close and crowded, a little inclined, not dentate, but simply 
ridged ; and according to the paucity of septa in the corallites, so 
are the coste unequal in size. In fully developed corallites the 
coste are subequal; but in the majority the alternate coste are 
the longest, although the intermediate, which correspond to 
small septa, are often the thickest. The septa are more delicate 
than the coste, are hardly exsert, but dip at once downwards 
and inwards; they are generally alternately large and small, 
os 
