4. Carposphæra melissa, n. sp.
Cortical shell thick walled, four times as broad as the medullary shell, with regular circular, hexagonally framed pores, three times as broad as the bars. Eight to ten pores on the quadrant. Medullary shell with simple circular pores.
Dimensions.—Diameter of the outer shell 0.16, inner 0.04, outer pores 0.012, bars 0.004.
Habitat.—Central Pacific, Station 268, depth 2900 fathoms.
5. Carposphæra melitomma, n. sp. (Pl. [20], fig. 4).
Melitomma melittosphæra, Haeckel, 1881; Prodromus et Atlas, loc. cit.
Cortical shell thick walled, with thorny surface, two and a half times as broad as the medullary shell. Its pores regular, circular, twice as broad as the bars, elegantly six-lobed, separated by crested hexagonal frames; in each hexagon-corner a short conical papilla (alternating with a lobe). Eight to ten pores on the quadrant. Medullary shell with small simple circular pores.
Dimensions.—Diameter of the outer shell 0.17, inner 0.07, outer pores 0.01, bars 0.005, inner pores 0.005.
Habitat.—Central Pacific, Stations 266 to 274, in various depths.