retusa, Trochocochlea [ Phorcus articulatus (Lamarck, 1822)] (Figures 6A, B)

1888a: 180 [XXXIII: 842]—available name

Type material. MCZR–M–11122 —10 sh + 3 juv. “ Tr. retusa Porto Maurizio d. Sulliotti 1884 =? Ph. striatus Risso ”

Type locality. Described from Porto Maurizio, Livorno, Chioggia and Trieste (Italy).

Remarks. Recorded by MolluscaBase (2018) as taxon inquirendum. It is a synonym of Phorcus articulatus (Lamarck, 1822) [new synonymy].

rotella, Gibbula [ Steromphala nivosa (A. Adams, 1853)] (Figures 6C, D)

1888a: 173 [XXXIII: 835]—available name

Type material. MCZR –M–11303 —16 sh + 1 juv. “ G. rotella, n. sp. Monts Malta ( Caruana)”

Type locality. Described from Malta.

Remarks. Recorded by MolluscaBase (2018) as a synonym of Steromphala nivosa (Adams, 1851) (Smriglio et al., 1991).