1870. ] DUNCAN—AUSTRALIAN CORALS. 295 
Family Octuttnip#. 
Division Oculinacee. 
15. Amphihelia incrustans, Duncan. No. 8, Upper Coralline beds, Cape 
Otway. 
Family Foner. 
Subfamily Lophoserine. 
16. Palxoseris Woodsi, Duncan. Hamilton tertiaries, Muddy Creek. 
17. Cycloseris tenuis, Duncan. No. 7, 2 miles east of the river Gellibrand. 
Family Astra1pm. 
Subfamily Husmiline. 
Division Trochosmiliacee. 
18. Conosmilia elegans, Duncan. Geelong tertiaries. 
19. anomala, Duncan. Hamilton tertiaries. 
20. striata, Duncan. Geelong tertiaries. 
21. lituolus, Duncan. No. 9, 3 miles west of the river Gellibrand.. 
Division Lnthophylliacee. 
22. Antillia lens, Duncan. Hamilton tertiaries. 
Section MADREPORARIA PERFORATA. 
Family Maprporm2. 
Subfamily Hupsammine. 
23. Balanophyllia campanulata, Duncan, No. 4. 
seminuda, Duncan. Hamilton tertiaries. 
armata, Duncan. Hamilton tertiaries. 
26. —— tubuliformis, Duncan. Hamilton tertiaries. 
27 fragilis, Duncan. Hamilton tertiaries. 
28 australiensis, Duncan. Hamilton tertiaries. 
29 Selwyni, Duncan. No 3, Upper coral-beds. 
30. cylindrica, Mich., var. No. 1, 14 mile west of Cape Otway. 
31. —— Ulrichi. Duncan. No. 1, 14 mile west of Cape Otway. 
IV. Description OF THE SPECIES. 
1. CagyorHytiia viota, Duncan and Woods. Plate XIX. fig. 1. 
Turbinolia viola, Woods, MS. 
The coral is cuneiform and very much compressed at the base, 
which is rounded inferiorly. The calice is elliptical and shallow. The 
septa are delicate; the principal are exsert and rounded, having 
large lateral spiny granules. There are six systems of septa, and 
four cycles. The first three orders are nearly equal; but the septa 
of the fourth and fifth orders are small, curve towards and touch the 
tertiary. The pali are tall rounded lobes on the tertiary septa; they 
are stout, larger than the end of the septa, and are sparsely granu- 
lar. The columella is long and papillary. The coste are visible to 
the base, are slightly wavy in their course, are separated by di- 
