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

1. Staurodoras spongosphæra, n. sp.

Four crossed spines, two to three times as long as the diameter of the spongy sphere, three-sided prismatic, with three dentated and spirally contorted edges. (Form of Spongosphæra streptacantha, but without medullary shell and with four equal spines, crossed regularly at right angles.)

Dimensions.—Diameter of the sphere 0.25; length of the spines 0.4 to 0.7.

Habitat.—Central Pacific, Station 271, surface.

2. Staurodoras mojsisovicsi, Dunikowski.

Staurodoras mojsisovicsi, Dunikowski, 1882, Denkschr. d. k. Akad. d. Wiss. Wien, Bd. xlv. p. 28, Taf. v. fig. 56.

Four crossed spines, one and a half times as long as the diameter of the spongy sphere, three-sided pyramidal, with three smooth edges. (What Dunikowski describes as "inner canals" of the spines are their edges.)

Dimensions.—Diameter of the sphere 0.14; length of the spines 0.18 to 0.2. basal breadth 0.04.

Habitat.—Fossil in the Alpine Lias (Schafberg near Salzburg).

3. Staurodoras liassica, Dunikowski.