The _Caryophilliæ_ are sometimes dredged from great depths; Professor Travers dredged one in eighty fathoms, and Dr. Johnston remarks that the existence of an animal so vividly coloured at so great a depth is worthy of remark. "When taken," says the professor, "the animal was scarcely visible, being contracted; when expanded, the disk was conspicuously marked by two dentated circles of bright apple-green, the one marginal and outside the tentacula, the other at some distance from the transverse and linear mouth. In the dark, the animal gave out a few dull flashes of phosphorescent light." In addition, we may mention the assertion of Mr. Swainson, that _C. ramea_, common in the Mediterranean, is occasionally found on the Cornish coast; but Dr. Johnston thinks it improbable that it could have escaped the attention of Mr. Couch and Mr. Peach, had it been so. As belonging to this family, we present here illustrations of _Flabellum pavoninum_, Lesson (Fig. 67). [Illustration: Fig. 67. Flabellum pavoninum (Lesson). 1. Vertical position. 2. Upper edge, with its plates and median thread. 3. Form of the animal. ] Of the _Occulinæ_, the animal is unknown, but it is contained in regular round radiated cells, more or less prominent, and scattered on the surface of a solid, compact, fixed tree-like coral. The individuals dispose themselves in ascending spiral lines, and appear to be regularly dispersed on the surface of the several branches. The typical species, _O. virginea_, formerly known as the White Coral, although it differs widely in reality from the true Coral, both in its structure and by its star-like polypiferous cells (Fig. 68), is found in the Mediterranean and also in the equatorial seas. Over the specimen we see (2) a portion of a branch magnified, in order that the reader may appreciate numerically the form of polype over its cells. [Illustration: Fig. 68. Occulina virginea (Lamarck).] [Illustration: Fig. 69. Stylaster flabelliformis (Lamarck).] The species formerly named _Occulina flabelliformis_, and which now bears the name of _Stylaster flabelliformis_, which is represented in Fig. 69, will give an excellent idea of these arborescent zoophytes. The polypidom is in the form of a fan, with many very unequal branches; the larger branches are smooth, the middle-sized are covered with small points. This fine zoophyte is found in the seas which surround the Isle of Bourbon and the Mauritius, a fine example of which is to be seen in the collection of the Museum of Natural History of Paris. ASTRÆACEA.