imperspicuus, Adeorbis [Tjaernoeia imperspicua Monterosato, 1875] (Figures 28O, P)

1875b: 36 [XIII: 262]—available name

Type material. MCZR–M–30038— 10 sh “ Adeorbis imperspicuus Monts. Palermo 30—90 m!”

Type locality. Described from Palermo (Sicily).

Remarks. Adeorbis imperspicuus Monterosato, 1875 is recorded as nomen nudum in MolluscaBase (2018) giving validity to Tjaernoeia exquisita (Jeffreys, 1883). However, the original description of Monterosato is fully diagnostic [“Palermo 90–110 m! Rassomigliante in piccolo all’ A. pulchralis, S. Wood, fossile del Crag.”— “Palermo 90–110 m! Resembling a miniature of A. pulchralis, S. Wood, fossil from the Crag.”], and this must be the name for the species [new status].