Dimensions.—Shell 0.1 long, 0.11 broad; horn and feet 0.1 to 0.15 broad.
Habitat.—Mediterranean, Corfu (Haeckel), surface.
Subgenus 3. Tripospyrissa, Haeckel.
Definition.—Basal plate with two pairs of collar pores (two larger posterior cardinal pores and two smaller anterior jugular pores).
8. Tripospyris semantrum, n. sp. (Pl. [95], fig. 3).
Shell thorax-shaped, thorny, with deep sagittal stricture and subcircular ring. Basal plate with four large collar pores (two smaller ovate jugular, and two larger pentagonal cardinal pores). Facial and occipital plates also each with two pairs of large annular pores; lateral sides with smaller irregular polygonal pores. Apical horn and the three feet slender, prismatic, divergent, longer than the shell.
Dimensions.—Shell 0.07 long, 0.08 broad; horn and feet 0.11 to 0.13 long.
Habitat.—South Atlantic, Cape of Good Hope (Wilhelm Bleek), surface.
9. Tripospyris capitata, n. sp. (Pl. [84], fig. 1).
Shell subspherical, spiny, with slight sagittal stricture and ovate internal ring. Basal plate with four large collar pores. Facial plate with three pairs and occipital plate with two pairs of large roundish annular pores; lateral lattice with smaller irregular pores. Apical horn and the three feet subcylindrical, about half as long as the shell, straight, divergent, with a spherical, spinulate knob at the distal end.