n. plSycones(Zoöl) A division of calcareous sponges.☞ They usually resemble a fig, being vase-shaped with a fringed opening at the summit. The feeding cells are in ampullæ connected with radial tubes in the thickened walls of the body.
Century Dictionary and Cyclopedia
syconesOne of the divisions of the Calcispongiæ or chalk-sponges, represented by forms which are essentially compound Ascones. See this word and Leucones.