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

01. Ethmosphæra minuta.

02. Ethmosphæra vulgaris.

03. Ethmosphæra siphonophora.

04. Heliosphæra echinoidites.

05. Rhaphidococcus lusianensis.

06. Heliodiscus simplex.

07. Histiastrum lusianense.

08. Trematodiscus soritoides.

09. Euchitonia muellerites.

10. Euchitonia amœna.