3. Tripodiscium clavatum, n. sp.
Shell ovate, smooth, one and a half times as long as broad. Pores irregular roundish, of different sizes. Mouth constricted, two-thirds as broad as the shell, with three divergent, straight club-shaped feet, nearly as long as the shell.
Dimensions.—Shell 0.12 long, 0.08 broad; feet 0.1 long.
Habitat.—Tropical Atlantic, Station 348, depth 2450 fathoms.
4. Tripodiscium campanula, Haeckel.
Carpocanium campanula, Stöhr, 1880, Palæontogr., vol. xxvi. p. 96, Taf. iii. fig. 9.
Shell campanulate or subspherical, smooth, about as long as broad. Pores small, regular circular, as broad as the bars. Mouth constricted, about half as broad as the shell, with three short conical descending feet.
Dimensions.—Shell 0.06 long, 0.05 broad; feet 0.02 long.
Habitat.—North Pacific, Station 244, depth 2900 fathoms; fossil in Sicily.