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

trigeminum, [928].

Plectellaria, [895].

Plectida, [898].

Plectocoronis, [979].

anacantha, [979].

pentacantha, [979].

triacantha, [979].

Plectoidea, [898].

Plectophora, [922].

arachnoides, [922].