1. C. ornatum, n. sp. Table 1 figures 3 to 5.
Cells triangular-urn shaped, very broad above, with a straight border, much compressed; mouths, 2 to 3, keyhole-shaped. Five fenestrae below each mouth; numerous branching bands on the back of the cell.
Habitat: Bass Strait, 45 fathoms.
This curious species is the only one belonging to the genus. The cells are very large, regular, and uniform, resembling very closely an antique sculptured urn. Colour dark brown, and the walls so thick as to be nearly opaque. The polyzoary, which appears to attain a height of four or five inches, is bipinnate (with all the branches on one plane) the branches alternate, and given off with extreme regularity. The ultimate ramules are incurved. The whole forms a very elegant object. The central stem, or series of cells, differs in no respect as regards the size or disposition of the cells composing it, from the branches.
Fam. 2. EUCRATIADAE.
7. EUCRATEA, Lamouroux.
1. Eucratea chelata, Lamouroux.
Habitat: Bass Strait, 45 fathoms.
In all respects identical with the British form. It also occurs at Port Adelaide.
8. ANGUINARIA, Lamarck.