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

Galear bows simple, smaller than the frontal bows, which are again smaller than the thoracal bows. Therefore the breadth of the shell increases towards the base. Sagittal constriction flat in the apical part, deep in the basal part. All bows armed with small irregularly scattered spines; at the base six larger divergent feet (two lateral, two anterior, and two posterior).

Dimensions.—Length of the shell 0.17, breadth 0.15.

Habitat.—South Pacific, Station 295, depth 1500 fathoms.

Subgenus 3. Toxonium, Haeckel.

Definition.—Galear and thoracal bows forked.

8. Toxarium costatum, n. sp.

Galear and thoracal bows forked, smaller than the frontal bows, all bows thorny, without larger spines. Sagittal constriction on both poles deep. Lateral outlines of the shell nearly parallel.

Dimensions.—Length of the shell 0.15, breadth 0.12.

Habitat.—Indian Ocean, Socotra (Haeckel), surface.

9. Toxarium bifurcum, n. sp. (Pl. [93], fig. 20).