The differences between the rissoids Crisilla marioni and C. cristallinula are discussed on the basis of S.E.M. photographs. We conclude that these nominal taxa represent two valid species.

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Basteria

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Nederlandse Malacologische Vereniging

H.J. Hoenselaar, & J. Hoenselaar. (1994). Conchological differences between Crisilla marioni (Fasulo & Gaglini, 1987) and Crisilla cristallinula (Manzoni, 1868) (Gastropoda Prosobranchia: Rissoidae). Basteria, 58(4), 195–197.