Zool. [mod.L., f. Gr. τόρν-ος or L. torn-us a turner’s wheel, in reference to the shape of the larva.] The larval form of species of the Sea-acorn, Balanoglossus. Hence Tornarian a., of or pertaining to a tornaria.
1888. Rolleston & Jackson, Anim. Life, 592. Tornaria requires a fresh examination…. Balfour regarded Tornaria as intermediate in structure between the Echinoderm larva and the Trochosphere.
1891. Cent. Dict., Tornarian.
1892. J. A. Thomson, Outl. Zool., xvi. 355. The Tornaria becomes pelagic, acquires a proboscis, loses its special bands of cilia, and becomes diffusely ciliated, but has not yet a mouth or anus.
