Habitat.—Tropical Atlantic, Stations 346 to 348, surface.
2. Gorgonetta geryonia, n. sp.
Shell hemispherical, twice as broad as long, with short scattered thorns on the surface. Twelve feet of similar shape to those in the preceding species, but differing in the following characters:—the six ascending feet are much smaller, about as long as the breadth of the shell, and each bears only six to twelve short branches; the six descending feet are about three times as long as the shell, more or less curved; their pencils much smaller, and the two spathillæ of each pencil-thread bear five anchor-teeth. The distal ends are more richly and irregularly branched.
Dimensions.—Length of the shell 0.4, breadth 0.7.
Habitat.—Indian Ocean (Cocos Islands), Rabbe, surface.
3. Gorgonetta carmarina, n. sp.
Shell flat, cap-shaped, three times as broad as long. Twelve feet similar in shape to those of the two preceding species, but more irregular in form and arrangement, and differing in the following characters:—the six ascending feet are nearly horizontally expanded, one and a half times as long as the breadth of the shell, with few short branches, each of which bears a spathilla with six recurved anchor-teeth. The six descending feet are about five times as long as the shell, irregularly curved, studded with numerous small pencils, each thread of which bears a double spathilla with six teeth. The distal ends are irregularly branched.
Dimensions.—Length of the shell 0.2, breadth 0.7.
Habitat.—South Pacific, Station 318, depth 2040 fathoms.
4. Gorgonetta bisenaria, n. sp.