Jarms, G., 1987. Thecocodium quadratum (Werner 1965) redescribed, T. penicillatum sp. nov., and a method for rearing hydrozoans. In: J. Bouillon, F. Boero, F. Cicogna & P.F.S. Cornelius, eds, Modern trends in the Systematics, Ecology and Evolution of Hydroids and Hydromedusae : 57-66.