Six erect colonies with proximal rejuvenated portions belonging to Idm
idronea fraudulenta Ostrovsky & Taylor, 1996, Exidmonea arcuata Ostrov
sky Sc Taylor, 1996 and Entalophoroecia cf. rogickiana (Androsova, 196
8) are described in detail. This is the first report of rejuvenation i
n colonies of Recent Tubuliporida. Conditions in which rejuvenation mi
ght occur are discussed as well as some terminological problems concer
ning this phenomenon.