2. Sagosphæra penicilla, n. sp. (Pl. [108], fig. 10).
Radial spines straight, stout, a single one at each nodal point, twice as thick, but of the same length as the smooth bars of the network, armed at the distal end with a brush of numerous thin radial bristles. (Very similar to Sagenoscena penicillata, but without pyramidal elevations on the surface of the sphere.)
Dimensions.—Diameter of the sphere 1.0 to 1.5, length of the bars 0.1 to 0.15, breadth 0.002 to 0.004.
Habitat.—Antarctic Ocean, Station 154, surface.
3. Sagosphæra verticilla, n. sp.
Radial spines slender, slightly curved, a single one at each nodal point, armed with three to five cruciate verticils, each of which is composed of four crossed lateral branches with spinulate terminal knobs (similar to Sagmidium crucicorne, Pl. [108], fig. 9), but with a spherical shell, having a simply latticed, and not a spongy wall.
Dimensions.—Diameter of the sphere 2.0 to 2.5, length of the bars 0.1 to 0.2, breadth 0.002.
Habitat.—North Pacific, Station 256, surface
4. Sagosphæra furcilla, n. sp. (Pl. [108], figs. 11, 11a).
Radial spines short, spinulate, with a spiny terminal knob (fig. 11a), two or three arising from each nodal point of the network in divergent directions, only one-third or one-fourth as long as its smooth bars. Meshes more or less irregular, triangular.