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

Dimensions.—Shell 0.06 long, 0.08 broad.

Habitat.—Mediterranean; Messina, surface.

Subgenus 4. Dictyospyromma, Haeckel.

Definition.—Basal plate with six or more collar pores.

15. Dictyospyris hexastoma, n. sp.

Shell nut-shaped, tuberculate, with deep sagittal stricture. Pores small, irregular, roundish. Three pairs of larger pores on each side of the ring. Basal plate with six large pores; the middle pair (cardinal) twice as large as the anterior (jugular) and the posterior (cervical).

Dimensions.—Shell 0.08 long, 0.12 broad.

Habitat.—Fossil in Barbados.

16. Dictyospyris enneastoma, n. sp.

Shell ellipsoidal, smooth, without external sagittal stricture, but with an internal free sagittal ring. Pores small and numerous, regular, circular. No larger annular pores. Basal plate with nine pores, three larger interradial alternating with three pairs of adradial.