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

araneosa, [1266].

circumtexta, [1266].

discoides, [1265].

enneaptera, [1266].

hexaptera, [1265].

polyptera, [1267].

trifida, [1267].

umbellifera, [1263].

Arachnocorythium, [1267].

Arachnopegma, [267].