1870. ] DUNCAN—AUSTRALIAN CORALS. 303 
and there in wavy lines. The cost are distinct, wide, equal, and 
covered with spiny granulations ; they are more or less continued 
over the small] lateral winglike projections. The calice is elliptical 
in its outline, shallow, and with a sharp, narrow, and slightly cellular 
margin. The columella is large, long, and spongy. The septa are 
unequal, not exsert, stout, and granular; there are four cycles of 
septa in six systems, and there are a few septa of the fifth cycle in 
some systems. The septa of the first, second, and third orders reach 
the columella; and those of the higher orders curve towards and 
meet the tertiary midway between the wall and the columella. 
Height of corallum 1,2,inch. Breadth of calice 3 inch. 
Locality. Hamilton Tertiaries, Victoria, South Australia. 
20. BaLaNoPHYLLIA SELWyYNI, n. sp. Plate XXI. fig. 4. 
The corallum is subcylindrical and slightly compressed, and has 
a large base with a slight constriction above it. The cost are 
distinct, flat above and rounded midway and below, finely granular 
superiorly, and marked with one series of large granules inferiorly. 
The epitheca is absent. The wall is moderately developed. The 
columella is large and long. The septa are very stout. There are 
four cycles of septa, in six systems ; and the higher orders unite with 
the tertiary at about one-fourth of the distance from the wall to the 
columella. The calice was compressed and elliptical. 
Height 1 inch. Greatest length of the calice } inch. 
Locality. No. 3, Upper “ Coralline beds,” near Cape Otway, South 
Australia. 
21. BALANOPHYLLIA FRAGILIS, n. sp. Plate XXI. fig. 5. 
The corallum is long and conico-cylindrical in shape, twisted and 
euryed. The epitheca is quite rudimentary, in the form of slight 
transverse bands. The costze are flat and marked with one series of 
small distinct sharp spiny granules, or with a ridge. The wall is 
very thin and hardly cellular. The columella is very small. The 
septa are plain, long, slender and irregular; the higher orders unite 
with the tertiary close to the wall. There are four cycles, in six 
systems, the fifth order being occasionally absent. The endotheca 
is tolerably developed. 
Height of corallum ? inch. Length of ealice 7 inch. 
Locality. Muddy Creek, Hamilton Tertiaries, South Australia. 
22. BALANOPHYLLIA AUSTRALIENSIS, Duncan. Plate XXI. fig. 6. 
The corallum is pedicellate, long, cylindrical, tapering and curved. 
The calice is elliptical. The fossa is shallow. The septa are not 
exsert, are thin, marked with arched ridges, and there are four 
cycles, in six systems, with a few laminz of the fifth cycle. The 
higher orders unite with the tertiary close to the wall, which is very 
thin. The columellaislarge. The epitheca is scanty, and surrounds 
the corallum at certain parts only. The cost are vermiculate, and 
slightly spinate. 
Height of corallum 13 inch. Length of calice +4 inch. 
Locality. Muddy Creek, Hamilton Tertiaries, South Australia. 
