Buccinulum mariae are typically a dark reddish-brown colour, with some specimens exhibiting a lighter colour and darker spiral bands. The holotype of the species was 20 mm in height, with a diameter of between 10 and 75 mm,[3] however specimens have been recorded as large as 26 millimetres in height.[4]
^ abBieler 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). "Buccinulum mariae Powell, 1940". MolluscaBase. World Register of Marine Species. Retrieved 20 October 2022.