The length of the shell varies between 3 mm and 8 mm. The shell consists of almost straight-sided whorls with deep, flat sutures. Its shell, marked with "thick, flat, slightly sinuous, oblique costae" that are "indistinct on the first whorl" and prominent thereafter, has a milky-white colour, on which the Turbonilla lactea species name is based.[6][7]
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Synonymy: It is unclear why some British authors (e.g. Winckworth, 1932; Graham, 1971; McKay & Smith, 1979) prefer the junior synonym Turbonilla elegantissima (Montagu, 1803).
^Backeljau, T. (1986). Lijst van de recente mariene mollusken van België (List of the recent marine molluscs of Belgium). Koninklijk Belgisch Instituut voor Natuurwetenschappen: Brussels, Belgium. 106 pp.
^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
^Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda.
^Peñas A. & Rolán E. (1997) La familia Pyramidellidae Gray, 1840 (Mollusca, Gastropoda, Heterostropha) en Africa occidental. 2. Los géneros Turbonilla y Eulimella. Iberus suplemento 3: 1-105. (5 June 1997)