Metaxia duplicarinata has a uniformly glossy white conical shell.[2] The nuclear whorls are slightly angular.[3] The species measures 4mm in height.[4]
It differs from Metaxia maoria by having four instead of five spirals per whorl.[2]
^Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O, eds. (2022). "Metaxia duplicarinata (Powell, 1940)". MolluscaBase. World Register of Marine Species. Retrieved 20 October 2022.