centrifuga, Pseudomalaxis [ Spirolaxis centrifuga (Monterosato, 1890)] (Figures 24O, P)

1890b: 161 [XXXVIII b: 909]—available name

Type material. MCZR–M–30035 —2 sh “Madeira”.

Type locality. Described from Madeira.

Remarks. Name introduced to distinguish Bifrontia zanclaea Philippi, 1844 sensu McAndrew (1852), considered as a distinct species. Subsequently figured (1913: 363, 1 unnumb. fig.), see also Smriglio et al. (1990). Recorded by MolluscaBase (2018) as Spirolaxis centrifuga (Monterosato, 1890) .