Dimensions.—Diameter of the shell 0.15; length of the tubules 0.05 to 0.09.
Habitat.—South Atlantic, Station 332, depth 2200 fathoms.
7. Siphonosphæra conifera, n. sp. (Pl. [6], fig. 9).
Shell subspherical, everywhere occupied by irregular conical tubules, the length of which nearly reaches the shell radius. Inner aperture of the cones two to three times as large as the outer. Four to five tubules in the half meridian of the shell. Distances between the bases of the cones small and irregular.
Dimensions.—Diameter of the shell 0.06 to 0.08, length of the tubules 0.03 to 0.04; inner aperture of the cones 0.01 to 0.02, outer aperture 0.008 to 0.01.
Habitat.—Indian Ocean, Cocos Islands, Rabbe, surface.
8. Siphonosphæra fragilis, n. sp.
Shell quite irregular roundish or nearly ovate, very thin and fragile, everywhere occupied by irregular, short, and broad cylindrical or conical tubes. Six to ten tubes in the half meridian of the shell. Diameter of the tubules about one-eighth that of the shell, three to four times as large as the length of the tubules, and the distance apart of their bases.
Dimensions.—Diameter of the shell 0.16 to 0.24, of the tubules 0.02 to 0.03; length of the tubules 0.006 to 0.008, distance of them 0.005 to 0.009.
Habitat.—East coast of Australia, Sydney, Faber; Station 165, surface.