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 Atlantic, Station 332, surface.

Subgenus 2. Litholophidium, Haeckel.

Definition.—Number of the radial spines variable, between ten and twenty, commonly twelve to sixteen.

5. Litholophus ligurinus, Haeckel.

Litholophus ligurinus, Haeckel, 1865, Zeitschr. f. wiss. Zool., Bd. xv. p. 366.

Spines of variable number, from eleven to twenty, commonly twelve to sixteen, four-sided prismatic, with smooth thin edges, of equal breadth in their whole length or a little thinner towards the proximal end.

Dimensions.—Length of the spines 0.3, breadth 0.005.

Habitat.—Mediterranean (Nice); Central Pacific, Station 274, surface.

6. Litholophus rhipidium, Haeckel.

Litholophus rhipidium, Haeckel, 1862, Monogr. d. Radiol., p. 402, Taf. xix. fig. 6.