tornaria (fig. 229) cannot be definitely united either with the Trochosphere or with the Echinoderm larval type.
Alimentary diverticula are characteristic of the larv of the Echinodermata and of tornaria.
In addition to this ciliated band the form of the tornaria is quite characteristic and unlike the adult.
A peculiar little creature, known as tornaria, was once considered to be the larva of a starfish.