Dimensions.—Shell diameter 0.1; length of the arm-ring 0.4, breadth 0.3.
Habitat.—Central Pacific, Station 265, depth 2900 fathoms.
2. Stephanospyris verticillata, n. sp. (Pl. [85], fig. 11).
Shell nut-shaped, tuberculate, with subregular circular pores. Basal plate with numerous small pores. Apical horn cylindrical, four to six times as long as the shell, with six to ten verticils of teeth. The connected feet form a circular ring, the diameter of which is four times as great as that of the shell. Each foot bears ten to twelve conical teeth, about as long as the shell. Distal ends not crossed and not prominent.
Dimensions.—Diameter of the shell 0.1, of the arm-ring 0.4.
Habitat.—Central Pacific, Station 266, depth 2750 fathoms.
3. Stephanospyris excellens, n. sp. (Pl. [83], fig. 20).
Shell subspherical, tuberculate, with regular circular pores. Basal plate with numerous small pores. Apical horn cylindrical, twice as long as the shell, with eight verticils of teeth. The connected feet form an ovate ring, which is three times as long and two and a half times as broad as the shell. Each foot bears eight conical spinulate teeth, about as long as the shell. The crossed and prominent distal ends bear two parallel vertical teeth.
Dimensions.—Diameter of the shell 0.1, of the arm-ring 0.2 to 0.3.
Habitat.—Central Pacific, Station 268, depth 2900 fathoms.