Habitat.—North-Western Pacific (off Japan), Station 231, surface.
5. Auloscena verticillus, n. sp. (Pl. [110], figs. 10, 11).
Radial tubes slender, cylindrical, twice as long as the smooth or somewhat thorny pyramidal tubes, armed in the distal part with two or three irregular verticils of three to six perpendicular spines, and on the distal end with a corona of twelve to eighteen straight, divergent, pointed, terminal branches, which often arise in pairs.
Dimensions.—Diameter of the sphere 3.2; pyramidal tubes 0.15 long, 0.01 broad.
Habitat.—South Atlantic, Station 318, depth 2040 fathoms.
6. Auloscena penicillus, n. sp. (Pl. [110], fig. 3).
Radial tubes slender, cylindrical, thorny, one and a half times as long as the thin and smooth pyramidal tubes, armed in the distal half with densely crowded perpendicular spines and a terminal corona of numerous (twenty to thirty or more) bristle-shaped branches, like a brush.
Dimensions.—Diameter of the sphere 2.0 to 2.5; radial tubes 0.15 to 0.2 long, 0.005 to 0.01 broad.
Habitat.—Antarctic Ocean, Stations 156, 157, surface.
7. Auloscena flammabunda, n. sp. (Pl. [110], fig. 4).