Habitat.—North Pacific, Station 236 south of Japan, surface.
Subgenus 2. Drymosphæromma, Haeckel.
Definition.—Radial by-spines forked or branched (main spines simple).
3. Drymosphæra furcata, n. sp.
Inner shell with irregular, polygonal meshes and thin bars, the former five times as broad as the latter; outer shell two and a half times as broad, with simple triangular meshes and smooth bars, bearing numerous long smooth bristle-shaped by-spines, which in the distal half are forked. Radial main spines with three smooth edges.
Dimensions.—Diameter of the outer shell 0.4, inner 0.16.
Habitat.—Indian Ocean, Ceylon, surface, Haeckel.
4. Drymosphæra cladophora, n. sp.
Inner shell with irregular, polygonal meshes, three to six times as broad as the smooth bars; outer shell twice as broad, with simple triangular meshes and very thin smooth bars, bearing numerous curved, irregularly branched, smooth by-spines. Radial main spines with three serrated edges.
Dimensions.—Diameter of the outer shell 0.4, inner 0.2.