« Teredo megotara: Valves rather short, rapidly diminishing to a moderately attenuated extremity ; auricles very large, rising dorsally above the level of the beaks, and extending ventrally far below the base of the triangular area, concave near the body, strongly reflected at their extremities, not marginated internally, nor abruptly defined externally. Pallets nearly resembling those of T. Norvagica. Tube simple, not concamerated posteriorly.[…] The entire surface of the valves is of an ivory-white, and often highly polished. » – S. Hanley in Forbes & Hanley: British Mollusca vol. I, London 1853, via BHL.