Habitat.—South Atlantic, Station 332, depth 2200 fathoms.
14. Hexalonche anaximenis, n. sp. (Pl. [25], fig. 5).
Cortical shell thin walled, twice as broad as the medullary shell, and covered with short conical by-spines. Pores regular circular, twice as broad as the bars; five to six on the radius. Circular pores of the medullary shell one-third as broad. Radial main spines conical, nearly as long as the radius of the shell.
Dimensions.—Diameter of the outer shell 0.1, pores 0.01, bars 0.005; inner shell 0.05; length of the spines 0.04, basal breadth 0.015.
Habitat.—Central Pacific, Station 272, depth 2600 fathoms.
15. Hexalonche aspera, n. sp.
Cortical shell thin walled, three times as broad as the medullary shell, and covered with short conical spines. Pores regular circular, four to six times as broad as the bars; eight to ten on the radius. Radial spines conical, about as long as the diameter of the shell.
Dimensions.—Diameter of the outer shell 0.12, pores 0.08, bars 0.0015; inner shell 0.04; length of the spines 0.1, basal breadth 0.02.
Habitat.—South Pacific, Station 300, depth 1375 fathoms.
16. Hexalonche castanella, n. sp.