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

quadrangula, [751].

quadrifolia, [752].

serrulata, [753].

stellata, [753].

tetracopa, [749].

Acanthonida, [740].

Acanthonidium, [751].

Acanthophracta, [791].

Acanthophractida, [791].

Acanthosphæra, [209].