289 
Genus NOTOPHYLLIA, nov. 
Corallum simple, free. Calice elliptical. Columellar lamellar 
and lobed, knobbed, or indented. Septa moderate in number, 
with irregular cyclical development ; principal orders straight, 
and the fourth, if present, curved or not. Wall porous, and 
vermicular or granular. Coste distinct. Epitheca partial or 
absent. 
Notophyllia semivestita, spec. nov. Pl. ix., figs. 3a, b. 
The corallum is compressed and tall in relation to its breadth. 
The anterior and posterior surfaces taper to a thin, laterally 
projecting, wedge-shaped base, above which the sides are slightly 
concave. About two-thirds of its upper surface is encircled by a 
stout banded epitheca, with one or two rudimentary bands below 
the main portion. Superiorly the epitheca terminates abruptly 
close to the summit of the corallum, and there stands out almost 
independent of the wall, being only connected with it by thin 
rod-like processes, which here and there cross the intervening 
space. Wall coarsely porous and highly vermicular. The coste 
are broad and distinct, especially at the summit of the corallum, 
where, as prominent continuations of the septa, they fringe the 
calicular margin. Calice elliptical and superficially shallow with 
a decp fossa ; its axes are in the ratio of 100 to 66. Columella 
deeply seated, stout, and lamellar, with a lobed upper surface. 
Septa exsert and in six systems, with three complete cycles, 
and some of a fourth; the latter are developed only in thc half 
systems at the extremities of the longitudinal axis ; moreover, in 
the type calice one of these halfsystems shows no fourth cycle. 
All orders of septa are straight and free, with no sign of incurv- 
ing in any. The primaries and secondaries are stout and sub- 
equal; the tertiaries and quaternaries are also subequal, but- 
much smaller. The two first orders slope gently towards the 
axial fossa, and then descend abruptly, but do not unite with the 
columella. All the septa are coarsely granular; near the wall 
they are cellular, and occasionally perforate, but in the body of 
the calice they are solid, as well as symmetrically arranged 
lamine. 
Height of corallum, 15 mm.; length of calice, 8 mm.; breadth 
of calice, 6 mm. 
Locality.—In the Eocene strata three miles west of Gellibrand 
River, on the south coast of Victoria. A solitary example, but 
so well preserved that I select * without hesitation as the type 
of the new genus. 
Notophyllia gracilis, spec. nov. Pl. x., figs. 2 and 3a, b. 
Corallum compressed and variable in height, usually short ; 
some individuals are more compressed inferiorly than others. 
