Notes on the general biology of Tubularia Larynx Ellis & Solander

Abstract

A description is given of a number of observations ahd experiments on the larvae and colonies of Tubularia. The experimental material could best be referred to the species T. larynx Ellis & Solander. Its characters are not wholly consistent with the diagnosis of this species, but the differences which exist are not great enough to warrant the erection of a new species.Liberation of the actinulae takes place more freely in darkness than in light, and there is evidence which suggests that it only occurs in still water or in weak currents.