Habitat.—Pacific, central area, Stations 270 to 274, from 2350 to 2925 fathoms.
2. Ellipsoxiphus flosculus, n. sp.
Proportion of the major axis to the minor = 6 : 5. Shell very thick walled, with regular, hexagonal meshes, eight to nine on the half equator, three to four times as broad as the bars. The inner contour of the meshes is circular, the outer six-lobed (similar to Xiphostylus phasianus, Pl. [13], fig. 9). Polar spines three-sided pyramidal, about as long as the major axis of the shell; their basal thickness equals one mesh.
Dimensions.—Longer axis 0.12, shorter axis 0.1; pores 0.012 to 0.015, bars 0.004; length of the polar spines 0.12 to 0.15, basal breadth 0.015.
Habitat.—Fossil in the Tertiary rocks of Barbados (Teuscher).
3. Ellipsoxiphus fragilis, n. sp.
Proportion of the major axis to the minor = 4 : 3. Shell thin walled, with regular, circular meshes, twice as broad as the bars; ten to twelve on the half equator. Surface smooth. Polar spines cylindrical, at the apex conical, half as long as the major axis.
Dimensions.—Longer axis 0.16, shorter axis 0.12; pores 0.008, bars 0.004; length of the polar spines 0.09, basal breadth 0.008.
Habitat.—South Atlantic, Station 325, surface.