4. Soreuma acervulina, n. sp.
Shell quite irregular, cloddy, or tuberous, composed of twenty to thirty (or more) roundish chambers of almost uniform size, the largest twice to three times as broad as the smallest. Pores irregular, roundish. Surface smooth.
Dimensions.—Diameter of the shell 0.18 to 0.24, of the largest chambers 0.06, of the smallest 0.02.
Habitat.—South Pacific, Station 295, depth 1500 fathoms.
Subgenus 2. Soreumidium, Haeckel.
Definition.—Shell with radial spines.
5. Soreuma spinosum, n. sp.
Shell quite irregular, cloddy, or tuberous, composed of thirty to forty subspherical chambers of nearly the same size. Pores subregular, circular, twice as broad as the bars; on the equator of each chamber six to eight pores. Surface thorny, covered with irregularly scattered conical radial spines, about as long as the diameter of the chambers.
Dimensions.—Diameter of the shell 0.17 to 0.25, of the chambers 0.04.
Habitat.—North Pacific, Station 241, depth 2300 fathoms.