Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index / Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76, Vol. XVIII

by Ernst Haeckel

8. Cœlodendrum digitatum, n. sp.

Terminal branches irregularly ramified, with unequal, spinulate, straight ramules, diverging at acute angles; the two last fork-branches digitate, each with five diverging finger-shaped ramules, lying in a meridian plane; their end-knobs conical, pointed, with a corona of recurved hooks.

Dimensions.—Diameter of the skeleton 1.6, of the valves 0.24.

Habitat.—Indian Ocean, Madagascar (Rabbe), surface.

9. Cœlodendrum flabellatum, n. sp. (Pl. [121], fig. 6).

Terminal branches flabellate, irregularly ramified, each of the last two fork-branches being divided into four or five diverging straight branches of different lengths; usually the last eight or ten ramules lie in a meridional plane; their end-knobs cap-shaped, with a corona of recurved teeth.

Dimensions.—Diameter of the skeleton 2.0 to 2.5, of the valves 0.25 to 0.3.

Habitat.—North Pacific, Station 235 to 240, surface.

10. Cœlodendrum serratum, n. sp. (Pl. [121], fig. 5).

Terminal branches flabellate, irregularly ramified like the preceding species; it differs from this in the strong compression of the broad, saw-shaped, terminal branches; the two opposite edges (placed in the meridional plane of the flabellum) are finely serrated; their end-knobs with a corona of diverging teeth.