Habitat.—Central Pacific, Station 265, depth 2900 fathoms.
3. Tiarospyris mitra, n. sp. (Pl. [87], figs. 9, 10).
Shell subspherical, smooth. Cephalis on the lateral sides with small roundish, double-contoured pores, on each side of the ring with three to five pairs of larger pores, each of which is closed by a thin fenestrated lamella (different on the frontal face, fig. 9, and the dorsal face, fig. 10). Cupola flat, cap-shaped, separated by a distinct coronal stricture, with similar pores. Basal coronet with, ten to twelve short conical convergent feet.
Dimensions.—Shell 0.11 long, 0.12 broad; ring 0.04 long; feet 0.02 long.
Habitat.—West Tropical Pacific, Station 225, depth 4475 fathoms.
4. Tiarospyris amphora, n. sp. (Pl. [87], fig. 8).
Shell amphora-shaped, in the upper half smooth, in the lower spiny, without external sagittal stricture. Cephalis subspherical with a small number of irregular, large, roundish pores, which are closed by a thin fenestrated lamella. Cupola flat, cap-shaped, with numerous small pores. Base covered with numerous conical divergent feet of different sizes, the largest one-third as long as the shell. Internal sagittal ring ovate, nearly free.
Dimensions.—Shell 0.14 long, 0.13 broad; ring 0.1 long; feet 0.04 long.
Habitat.—South Pacific, Station 285, depth 2375 fathoms.