Stolon ans stolon formation in Haplosyllis chamaeleon . A.- Adult worm during the process (ventral view). B.- Posterior end of an adult just after releasing the stolon. C.- Posterior end of an adult some time after releasing the stolon. D.- Released stolon (dorsal view). E.- Head of the stolon (dorsal view). F.- Head of the stolon (frontal view). G.- Parapodium of the stolon showing the swimming chaetae.