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

Habitat.—South Pacific, Station 302, surface.

Subgenus 3. Dorypeltonium, Haeckel.

Definition.—Free apophyses of the radial spines branched, and forming perforated shields by union of their anastomosing branches.

6. Dorypelta lithoptera, n. sp.

Apophyses of the long compressed radial spines with anastomosing branches; each spine bearing two free separated shields (each with two roundish aspinal pores). At the base of each spine (in the network of the outer shell) two elliptical aspinal pores, larger than the other pores.

Dimensions.—Diameter of the outer shell 0.09, of the inner 0.03.

Habitat.—North Pacific, Station 239, surface.

7. Dorypelta tessaraspis, n. sp. (Pl. [133], fig. 2).

Apophyses of the long cylindrical spines with anastomosing branches; each spine bearing a single free shield with four crossed aspinal pores of equal size (on the margin of the shield twelve to sixteen spikes). At the base of each spine (in the outer shell) four crossed aspinal pores, about as large as the other roundish pores.

Dimensions.—Diameter of the outer shell 0.11, of the inner 0.05.