69 
tumid, and usually attached to a fragment of shell or to poly- 
zoa. One example has its base perforated for an annelid, the 
caleareous tube of which is still left almost intact on its 
under surface. The wall is stout, and marked by rows of broad, 
prominent, equal, granular coste. At the truncated summit 
of the corallum these festoon the calicular margin, and con- 
trast strongly with the slender septa which form their con- 
tinuations in the calice. There is a variable amount of epi- 
theca, and it may be either delicate or moderately stout. 
When worn away, as is frequently the case, a series of ir- 
regular, longitudinal pores, separated by thin, transverse 
bars, become visible in the interspaces of the coste. 
The calice is subplane and slightly elliptical. The ratio of 
the major and minor axes varies in the examples; in the 
type it is as 10 to 8. The septa are porous, very thin, 
minutely granular, and in six systems with four cycles. The 
tertiaries are the most conspicuous septa in the calice and 
the two in each system bend towards each other and unite 
close to the columella. Not unusually these septa describe 
a double curve, first towards the tertiary of the same system, 
and then away from it towards the adjoining one in the 
next system. The quaternaries bend towards and join the 
tertiaries near the margin; in the loops thus formed the free 
quinaries appear as very short projections from the wall. 
The primaries and secondaries are free, subequal, and con- 
tinue or not to the columella. In the type calice only one 
system is complete, the rest wanting the two higher orders in 
one half of each system. A slightly larger but less perfect 
calice has the higher orders more fully developed. The colu- 
mella is prominent, fascicular rather than spongy, and longi- 
tudinally piaced in the fossa. 
Height, 14 mm. Length of calice, 55 mm.; breadth of 
do., 45 mm. 
Locality, etc.—Eocene. Abundant at Spring Creek, and 
fairly common at Cape Otway, Wilkinson’s No. 4, and Fish- 
ing Point. Single examples from the clays of Calder River, 
a tributary of the Aire, and from Shelford. 
Balanophyllia induta, spec. nov. Pl. xxv., figs. la, b. 
The corallum is tall, slender, straight or slightly bent, and 
either subcylindrical or regularly tapering. The base is flat 
and pedicellate. The pedicel is of moderate size, and some- 
times quite small The wall is stout, and covered by a thin 
pellicular epitheca. This is marked transversely with fine 
chevroned lines arranged in a series of narrow, scarcely rais- 
ed, encircling bands. Such an ornament is unusual in Bal- 
anophyllie, and resembles that seen in some species of Fla- 
