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

staurobelonium, [639].

tricinctum, [637].

Trochodiscida, [412].

Trochodisculus, [417].

Trochodiscus, [417].

cenophacus, [417].

cingillum, [419].

echiniscus, [418].

medusinus, [417].

odontotrochus, [418].