75 
from Spring Creek, are attached to polyzoa ; while the third, 
from Cape Otway, is fixed to the tube of Dentaliwm Man- 
telli. 
I dedicate this interesting coral to the late Hon. Friedrich 
Basedow, in remembrance of the great interest taken by him 
in the natural history of the State. 
I have now dealt with nearly all the undescribed corals in 
my collection. The few remaining are represented by single 
and mostly imperfect examples, and their consideration must 
be postponed till fresh material comes to hand. Some gene- 
ral remarks upon the distribution, affinities, etc., of Austra- 
lian tertiary corals will be made in a succeeding article, 
which is in course of preparation. 
EXPLANATION OF PLATES. 
Plate XXII. 
Fig. 
1. Flabellum microscriptum—corallum, natural size. 
9. Flabellum medioplicatum-—corallum, natural size. 
3. Flabellum Grangense—corallum, magnified 1:5 diam. 
4. Placotrochus magnus—a, corallum of deltoid example, natural 
size; b, corallum of cuneiform example, natural Size; 6, 
calice of the latter, magnified 1:5 diam. 
5. Ceratotrochus Australiensis—a, corallum, magnified 2 diam.; 
b, calice of same, with endothecal ring, magnified 6 diam. 
6. Platytrochus Maudensis—a, corallum, magnified 4 diam.; b, 
calice of another example, magnified 10 diam. 
7. Discotrochus ? pateriformis—a, corallum, magnified 6 diam; 
b, calice of same, magnified 8 diam. 
Plate XXIII. 
1. Deltocyathus stellaris—a, corallum, magnified 3 diam. ; b, calice 
Seen magnified 3 diam.; c, base of same, magnified 
3 diam. 
9. Parasmilia Flindersensis—a, coralum, magnified 2 diam.; b, 
calice of same, magnified 4 diam. 
3. Leptocyathus ? convezus—a, corallum, magnified 4 diam.; b, 
calice of same, magnified 8 diam. 
4. Trochocyathus Wilkinsoni—a, corallum, magnified 2 diam.; 0, 
calice of the same, showing two systems of septa, magnified 
6 diam. 
5. Deltocyathus fontinalis—a, corallum magnified 4 diam.; b, 
calice of same, magnified 4 diam. 
Plate XXIV. 
1. Conosmilia stylifera—a, corallum, magnified 2 diam.; b, calice 
of same, magnified 5 diam. 
2. Deltocyathus Verconis—a, calice, magnified 6 diam. ; b, base of 
another example, magnified 6 diam. 
3. Bathyactis Beaumariensis—a, calice, magnified 6 diam.; b, 
base of slightly smaller specimen, magnified 6 diam. 
4. Bathyactis excelsa—a, corallum, magnified 1:5 diam. ; b, calice 
of the same, magnified 2:5 diam. 
