"Scyphistoma stage of Cyanaea capillata, showing two ordinary hydrae tubae, between which are two others,…
"Diagrammatic sagittal section of Microstomum, showing a chain of four zooids produced by fission. b,…
An illustration of the first stage of fission in the Noctiluca scintillans. Noctiluca scintillans, also…
An illustration of the second stage of fission in the Noctiluca scintillans. Noctiluca scintillans,…