Morphologie und Nahrungsaufnahme bei Eufolliculina spec. und Metafolliculina andrewsi, Zellteilung im Gehäuse (Schwärmerbildung), Zellteilung an herauspräparierten Tieren: Resorption des Peristomapparates, Entwicklung zweier verschieden geformter, getrennter Peristom-Anlagen, Pigmentverlagerung in die vordere Zellhälfte, Kondensation und Wiederaufgliederung des Makronukleus, Verlassen des alten Gehäuses.

Introductory, the film deals with the morphology and food intake of Eufolliculina spec. and Metafolliculina andrewsi. The unequal cell-division is demonstrated on a single animal of Eufolliculina, living in its case. The conspicuously pigmented, cortical stripe pattern allowed a detailed study of the completion of morphogenesis. The film facilitates interesting insights into the dynamics of these complicated processes. In the begin of cell-division, the parental peristome-apparatus is resorbed. Than, two differently formed, separate peristome constructions develop. There is a distinct migration of pigment into the anterior part of the cell. At the same time the macronucleus condenses to a sengle mass and divides again into a segmented chain. After completion of cell-division the anterior daughter leaves the parental case as a wormlike swarmer.