302 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Feb. 9, 
Locality. No. 7, 24 miles east of the river Gellibrand, Victoria, 
South Australia. 
17. BALANOPHYLLIA CAMPANULATA, u. sp. Plate XXI. Fig. 1. 
The corallum is pedicellate, has a slight constriction immediately 
above the small base, and expands regularly into an elongate bell- 
shape. The epitheca exists inferiorly; but it is very delicate, and 
permits the flat costee to be distinguished. The calice is elliptical, 
and the margin is slightly everted; the wall is moderately developed. 
The columella is large, long, spongy, and prominent. ‘The septa are 
stout: there are four cycles; and the septa of the fourth and fifth 
orders unite with the tertiary midway between the wall and the 
columella. The tertiary septa, after the junction with the others, 
are as large as the primary and secondary septa. The lamine are 
granular. The coste, where uncovered, are separated by distinct 
intercostal spaces with numerous foramina; they are slightly un- 
equal, and have both granulations and foramina on their flat external 
surface. There are rarely more than two rows of granules; and they 
are scarce. 
Height of the corallum =8, inch. Breadth of the calice ;3, inch. 
Locality. No. 4, clay beneath “ Coralline beds,” near Cape Otway. 
It is associated with Trigonia semiundulata. 
18. BaLaNoPHYLLIA SEMINUDA, n. sp. Plate XXI. fig. 2. 
The corallum has a wide base, witha constrictionimmediately above: 
it, and is cylindrical, but slightly wider at the calice than elsewhere. 
The epitheca is very dense for half the distance up the corallum, and 
is wanting elsewhere. The coste, invisible below, are distinct where 
the epitheca does not exist above; they are formed by vermiculate 
projections. The calice is circular in outline; its margin is thin, ex- 
cept at the origin of the primary and secondary septa, where it is thick 
and cellular; and its fossa is very deep. The septa are unequal, 
exsert, curved above, and more or less vertical at their inner edge; 
they are marked with ridges which are directed inwards and up- 
wards, and with endothecal ridges crossing the first kind. The 
primary septa are stout and very exsert, and the secondary septa 
are smaller and less prominent; the tertiary septa, after their union 
with these of the fourth cycle, are very stout, and reach the colu- 
mella; the septa of the fourth and fifth orders join the tertiary 
about halfway to the columella. The columella is small and spongy, . 
and is situated very deeply in the fossa. 
Height of the corallum -§, inch. Breadth of the calice 3, inch. 
Locality. Hamilton Tertiaries, Victoria, South Australia. 
19. BALANOPHYLLIA ARMATA, n. sp. Plate XXI. fig. 3. 
The corallum is subcylindrical, tall, compressed and armed with a 
winglike projection immediately above either side of the base; the 
base is moderately large, and presents evidences of attachment to 
some substance during life; there is a slight constriction above the- 
base. The epitheca is imperfect, and surrounds the corallum here 
