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

quadriloba, [645].

staurophora, [647].

tetracantha, [647].

transversa, [646].

turrita, [649].

Tetrapylonium, [657].

armatum, [659].

octacanthum, [658].

pantellipticum, [658].

quadrangulare, [658].