Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. — Volume 1 / Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition.

by John MacGillivray

(a) Cells distichous.

5. S. subcarinata, n. sp.

Cells tubular, upper half divergent, ascending. Mouth looking upwards, circular, with an anterior and two lateral broad, expanding teeth. A narrow angular line or keel down the front of the cell. Ovicell ---- ?

Habitat: Bass Strait, 45 fathoms dead shells.

Colour white, transparent, growth small, straggling. Branches irregular, divaricate nearly at rightangles, subalternate. The three expanding teeth and the anterior ridge or keel, besides its habit, distinguish it from a Tasmanian species with which alone can it be confounded. The cells are large.

6. S. patula, n. sp.

Cells tubular, upper third free, divergent ascending. Mouth perfectly round, looking upwards and outwards, margin entire everted. Ovicell ---- ?

Habitat: Bass Strait, 45 fathoms, dead shells.

Colour whitish. A small parasitic species, with opposite branches.

7. S. Orthogonia, n. sp.