Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, First Part: Porulosa (Spumellaria and Acantharia) / Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76, Vol. XVIII

by Ernst Haeckel

Dimensions.—Diameter of the capsules 0.06 to 0.08, length of the spicula 0.05 to 0.15.

Habitat.—North Atlantic, Azores, Station 354, surface.

15. Sphærozoum araucaria, n. sp.

Spicula all geminate-quadriradiate, with stout straight middle rod and four longer diverging shanks on each end of it. Shanks arborescent, with six to twelve thorny lateral branches.

Dimensions.—Diameter of the capsules 0.1 to 0.15, length of the spicula 0.05 to 0.1.

Habitat.—South Atlantic, coast of Brazil, Rabbe; surface.

16. Sphærozoum arborescens, n. sp. (Pl. [4], fig. 8).

Spicula all geminate-quadriradiate, with a stout straight middle rod and four longer diverging shanks on each end of it. Shanks arborescent, pine-shaped, with four to six verticils of lateral branches, which again are ramified and thorny.

Dimensions.—Diameter of the capsules 0.16 to 0.18, length of the spicula 0.1 to 0.2.

Habitat.—South Atlantic (Tristan da Cunha), Station 332, surface.