In the seventies F. Nordsieck introduced many new nominal taxa in the Pyramidellidae (Opisthobranchia). His original material of the genera Chrysallida, Ondina (s.n. Evalea) and Menestho has been revised. For some taxa lectotypes are designated. For Odostomia (Evalea) elegans A. Adams, 1860, a neotype is designated. In addition Ondina jansseni sp. nov. is described.

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Nederlandse Malacologische Vereniging

J.J. van Aartsen, & H.P.M.G. Menkhorst. (1996). Nordsieck’s Pyramidellidae (Gastropoda Prosobranchia): A revision of his types. Part 1: The genera Chrysallida, Ondina (s.n. Evalea) and Menestho. Basteria, 60(1/3), 45–56.