5. Anther, Johnstone, includes such definite as have not the power of retracting their tentacula. Several of the species grow to a large size.
Example, Anthea Tuedia. Johnstone, 'Brit. Zoophytes,' p. 222, fig. 33.
6. A ctiwdota, Blainville (Jletridiam, Oken), species in which the oral disk is divided at the margin into more or less rounded lobes, which bear short simple tentacula.
Example, A. dianthus, 'Phil. Trans.; vol. lvii., tab. 19, fig. 8.
7. Capnca, Forbes, of which one species only is known. The disk is round, with several circles of exceedingly short tubercular retractile tentacula, and the body is in part invested with a peculiar epidermis, which is divided at the margin into eight lobes.
Example, C. tanyuinea. (' Annals of Natural History; voL vii., pl. I, fig. 1.) Irish Sea.
C. Sea-Anemonies haring more or less pinnate tentacula.
8. A etineria, Quoy and Gaimard_ Such as have the entire disk covered by very small villose ramified tentacula.
Example. A. rillosa, Quoy and GaimazaL (`Voy. Astrolabe, Zooph.,'
pl. 49, figs. I, 2.) Tonga islands.
9. Actinodendron, Quay and Gaimard. Species having very long arborescent tentacula disposed in one or two series on the oral disk.
Example, A. alcyonoideum. (` Voy. Ast.,' pL 48, figs. 1, 2.) This animal is more than a foot in height, and secretes a stinging mucus.
10. Thalaztianthas, Leuckart. One species only is known, the T. aster, an inhabitant of the Red Sea, figured in the plates to Riippell's 'Voyage.' Its tentacula are numerous, short, and pinnate. It is probably identical with the Epicladia of Ehrenberg.
11. Heterodactyla, Ehrenberg. The tentacula are of two sorts, some simple and others pinnate. H. Hemprichii. Red Sea.
12. Metalictis, Ehrenberg, founded on an animal from the same locality with the last, and characterised by having all the tentacula arborescent, but the internal ones are the larger and more pinnate, and have their extremities hollowed into a sort of socket.
Example, 111egalictis Hemprichii.