804 Dr. P.M. Dunean on some Fossil Corals from Sinde, 
and open in most cases. The outer part of the calice is more or 
less separated from the inner, and the septa are wide apart, very 
distinct, and more or less dentate. The coste on the plicated 
external wall of the corallum are distinct, large and irregular in 
size. The synapticule are wide apart and distinct. Pedunele 
not wide. Height of coral +4 inch. Width of a calice +4 inch. 
Locality, Sinde Tertiaries. Coll. Brit. Mus. 
This species is readily distinguishable by its calices and large 
irregular coste; and its calices resemble those of Trochoseris 
aperta in many respects. When worn and deprived of its 
“collines,” this species presents the appearance of a series of 
cup-shaped depressions with wide interspaces. See specimen in 
Coll. Geol. Soe. 
21. Cyathoseris magnifica, n.sp. Pl. XIX. fig. 7. 
The corallum is large, convex, and irregularly rounded above, 
and trochoid, with a small attachment below ; the wall is ranged 
in rounded folds which do not much affect the calicular surface, 
and it is very faintly costulated. The calicular surface is very 
Astran in its appearance ; the synapticule between the septa 
determine the family, however. Calices unequal and irregular 
in shape, simple, not in series, varying in depth, and all more 
or less infundibuliform ; they are separated by a coenenchyma, 
which is more or less marked by the cost, and they are im- 
bedded and are not exsert. The septa are numerous above, but 
are grouped in paliform masses in contact with the broad flat 
columella. The wall is thick. Height of corallum 2/5 inches, 
breadth 3-5; inches. Breadth of a calice =5,-;2, inch. 
Locality, Sinde Tertiaries, Kurrachee. Coll. Brit. Mus. 
The convex upper surface, with its crowd of deep calices, 
distinguishes this species, which is widely separated in its septal 
arrangement from all the others. 
22. Mycedium costatum, n.sp. Pl. XIX. fig. 8. 
The corallum is in rather thick frondiform expansions, whose 
under surface is marked by long, parallel, straight, equal, and 
slightly prominent smooth cost, and whose upper surface pre- 
sents calices more or less inclined, a little raised on one side, 
often deep, separate generally, or occasionallyfplaced on mammil- 
lated elevations. The septa are thick at the calicular margin, 
delicate within, and are continuous with long, parallel, distant, 
subequal costz, which are regularly dentate. The columella is 
very small, and there are two or three cycles of septa. The 
blunt teeth of the costz are not restricted to the neighbourhood 
of the calices. Thickness of corallum -2,--4; inch. Coste eight 
in =4; inch. 
