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

Trizonium, [637].

amphibelonium, [638].

constrictum, [637].

decabelonium, [639].

dodecabelos, [640].

hexabelonium, [639].

hexagonium, [638].

octobelonium, [639].

octogonium, [638].

pleurobelonium, [638].