712 APPENDIX I. 
94, Cueretes ovata (Lonsdale) Dana.—Plate 11, fig. 9, natural size; 9 a, 6, en- 
larged views of columns. 
Harper’s Hill. 
The columns are rather irregular in outline, and number about 30 in a breadth of half 
an inch. The branches in our specimens are half an inch in diameter, and have rounded 
terminations. The mode of divergence and interpolation mentioned by Lonsdale as 
characterizing this and other species, belongs to all corals growing, like these, from a 
budding cluster, and is well seen in the Pocilloporee, many Porites, and in other genera. 
Lonsdale’s specimens are quoted from the same localities as the ¢asmanzensis. The 
figure in Strzelecki represents well the character of our specimens, except that the 
constrictions of the columns are not quite as numerous. 
Stenopora ovata, Lonsdale, Darwin’s Vole. Islands, p. 163 ; Strzelecki’s New South Wales, p. 
263, pl. 8, fig. 3. 
95. CuHerETEs GRacttis (Dana).—Ramose, branches slender, 13 to 3 lines thick ; 
cells subelliptical, and having the border a little prominent. Columns of the size in the 
ovata, (about 6 to a line in breadth,) even, with few constrictions.—Plate 11, fig. 10, 
natural size; 10 a, columns enlarged ; 4, c, surface of different parts enlarged. 
Wollongong Point and Black Head, Illawarra. 
Fig. 15, plate 10, represents another small coral ; but the specimen is so imperfect that 
we refer it very doubtingly to the genus Hemitrypa. 
96. Encrryirat Remains. Fragments of one or more species of Encrinital remains 
occur in the Glendon rock, with the Fenestellz and other species of that locality, But 
no good specimens have been seen by the writer.—Plate 11, figures 12 a, b, represent 
portions of one from that place. 
Plate 11, figures 13, 14, represent portions of Encrinital remains in limestone, pro- 
bably from the limestone region towards Yass Plains. Figure 15 is a fragment from the 
sandstone of Wollongong. 
97. Genus PENTADIA.—This genus is formed for three singular fossils, or portions 
of fossils, from Illawarra. 'T'wo of them have been seen only as casts, presenting finely 
the minute markings of the surface. The other is solid calcareous, and has been recrys- 
tallized since fossilization, so as to have an oblique transverse cleavage. There is evi- 
dence that they must have been hard, and not mere animal tissue, in their solid structure 
and the perfect symmetry of form which is retained by the specimens, for they are 
not at all distorted by pressure. That they were not each an Echinoderm is also appa- 
rent from their being quite solid calcareous throughout, whence it is obvious that they must 
have been calcareous or subcalcareous plates, when in their original condition. They must 
either be an internal secretion of some animal, or portions of an external shell or cover- 
ings. Mr. James Hall, to whom I submitted the specimens, pronounces them portions of 
a Crinoid, and offers reasons that seem to place it beyond doubt. The symmetrical 
radiate form of one specimen, precludes the idea of its having come from the interior of 
any mollusc, while, at the same time, it corresponds in this respect. with the Radiata. 
