(Original description) The shell is fusiform, with an elevated spire and an ovate aperture. The outer lip is sharp, and the umbilicus forms a narrow, linear opening.
(Described as Couthouyia) The shell is ovate, with a deep, broad umbilical chink and an acuminate spire. The whorls are convex and bear intersecting sculpture, while the body whorl is inflated. The sutures are impressed.
The aperture is semi-ovate. The inner lip is straight, narrow, and free, widening anteriorly, and the umbilical chink is elongated. The outer lip is simple and curved, with a sharp, entire margin.
↑Macromphalus S.V. Wood, 1842.Gofas, S. (2009). Macromphalus S.V. Wood, 1842. In: Bouchet, P.; Gofas, S.; Rosenberg, G. World Marine Mollusca database. Accessed through the World Register of Marine Speciesathttp://marinespecies.org/aphia.php?p=taxdetails&id=138625 on 27 December 2011.
↑Wood, S.V. (1842). "A catalog of shells from the Crag". Annals and Magazine of Natural History. 1 (9): 537. Retrieved 4 November 2026. This article incorporates text from this source, which is in the public domain.
Warén, A.; Bouchet, P. (1988). A new species of Vanikoridae from the western Mediterranean, with remarks on the Northeast Atlantic species of the family. Bollettino Malacologico. 24 (5-8): 73-100.
Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels. 50: pp.180–213.
Wikimedia Commons has media related to Macromphalus.