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

Definition.—Pores of the cortical shell regular, circular, without hexagonal frames, all of nearly equal size and form.

6. Carposphæra cerasus, n. sp.

Cortical shell thin walled, smooth, twice as broad as the medullary shell; both with regular circular pores, six times as broad as the bars. Twelve to fifteen pores on the quadrant. Outer pores twice as large as the inner.

Dimensions.—Diameter of the outer shell 0.24, inner 0.12; outer pores 0.016, inner 0.008.

Habitat.—Central Pacific, Station 271, surface.

7. Carposphæra apiculata, Haeckel.

? Haliomma apiculatum, Ehrenberg, 1872; Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 313.

Cortical shell thin-walled, covered with numerous short conical thorns, three times as broad as the medullary shell. Pores regular, circular, four times as broad as the bars. Six to eight pores on the quadrant.

Dimensions.—Diameter of the outer shell 0.15, inner 0.05, outer pores 0.012, bars 0.03.

Habitat.—North Pacific, California, depth 2000 fathoms; Station 254, depth 3025 fathoms.