65 
occasionally has a few warty excrescences on its surface. The 
Coste are broad, more or less granular, and faintly marked 
beneath the epitheca. When this is worn off the granules of 
the созбе become more distinct. 
The calice is circular and shallow. The septa are highly 
granular, and in six systems with four cycles. They are slen- 
der, but unequal in size, the two first orders being stouter 
than the very thin tertiaries and quaternaries. The colu- 
mella is moderately large, fascicular, and united by lateral 
processes with the inner ends of the principal septa. A 
Scanty endotheca is present in some of the calices. 
The wall of the larger corallum figured has been broken 
down below the level of the columella, which now projects 
above it. The total height of the specimen is 20 mm. А 
smaller bent individual is also somewhat damaged. It is 
15 mm. in height, with a calice 7:5 mm. in diameter. 
Locality, etc.—In Eocene strata at Brown's Creek, in the 
Aire River district. Ten examples. 
This species differs from P. Hermani of the same beds by its 
large base, and straight or slightly bent instead of horn-shaped 
corallum. Tt is distinguished ‘also by its smooth, shining 
epitheca. 
GENUS CONOSMILTA. 
Conosmilia granulata, spec nov. Pl xxiv., figs. 5a, b. 
The corallum is curved, horn shaped, circular in transverse 
Sections, inflated superiorly, and then tapering to an almost 
Pointed base; at the extremity of this there is a mark of 
former adherence. A delicate, finely granular epitheca covers 
the wall, which is thin in the figured example, but stouter and 
stronger in a larger one. The latter has a portion of the 
wall at the calicular margin and some of its septa broken down, 
While the type is a finely preserved specimen. The coste are 
continuous with the septa, equal, slightly projecting at the 
Summit, and prominent or not lower down. They are out- 
en on the wall by broad, wavy lines of the epithecal gran- 
ules, 
The calice is circular, widely open, and shallow. The 
Septa are granular, slender, and in six systems with four com- 
plete cycles. The primaries and secondaries are long, and 
reach the columella ; the tertiaries are slightly and the quater- 
haries much shorter. The latter are also somewhat thinner 
than the other orders. The columella is prominent, trabe- 
cular, and formed of twisted, vertically placed laminæ, which 
fuse with the inner ends of the primary and secondary septa 
е endotheca is scanty. 
The dimensions of the type are: —Height of corallum, 17 
mm. ; diameter of calice, 10 mm. The larger example men- 
