Dimensions.—Longer axis of the ellipsoid 0.15 to 0.2, shorter axis 0.09 to 0.12; pores 0.08, bars 0.4.
Habitat.—North Pacific, Station 236, surface.
5. Cenellipsis micropora, n. sp.
Proportion of the longer axis to the shorter = 5 : 4. Network of the thick wall quite regular. All pores circular, without hexagonal frame, very small, scarcely half as broad as the bars; six to eight on the half equator. Surface quite smooth.
Dimensions.—Longer axis of the ellipsoid 0.1, shorter axis 0.08; pores 0.004, bars 0.01.
Habitat.—South Pacific, Station 289, surface.
Subgenus 2. Cenellipsula, Haeckel.
Definition.—Network of the shell irregular, with meshes of different size or form.
6. Cenellipsis heteropora, n. sp.
Proportion of the longer axis to the shorter = 3 : 2 or = 5 : 3. Network of the thin wall very irregular, with polygonal meshes of different size and form (for the most part pentagonal or hexagonal, but also many tetragonal or heptagonal). The largest pores four to six times as broad as the smallest; ten to twenty pores on the half equator; bars between them thin. Surface smooth or somewhat spiny.