effusa, Coleophysis [ Retusa truncatula (Bruguière, 1792)] (Figures 32A, B)

1890c: 188 [XXXVIII c: 922]—available name

Type material. MCZR–M–16030 —4 sh “n.sp. Palermo 1886”

Type locality. Described from Palermo (Sicily), and Villefranche-sur-Mer (France).

Remarks. The recognition of the type material was discussed by Oliverio & Tringali (2001: 131; 124, fig. 9, 128, figs 31–32, 132, fig. 52). This species needs to be revised in the framework of a complete revision of the Retusa truncatula (Bruguière, 1792) complex. Recorded by MolluscaBase (2018) as a synonym of Retusa truncatula (Bruguière, 1792) .

minutissimus, Utriculus [ Retusa minutissima (Monterosato, 1878 ex H. Martin ms.)] (Figures 32C–E)

1872b: 54 [VI: 136]—nomen nudum

1875b: 46 [XIII: 272], as Cylichna minutissima —nomen nudum

1878a: 159 [XX: 449]—available name

Type material. MCZR –M–16015 —11 sh “ Utriculus minutissimus Martin Algier 15 m ” (by hand of Joly)// 146 + 1 sh “ Algier (Joly)!”// 27 sh label very damaged “ Bulla minutissima M. Golfe de Fos ”// 7 sh “Vado, Mar.se G: Doria”// 1 sh “Livorno F.lli Caifassi”. Label on the box bottom: “ Utriculus minutissimus H. Martin ms. = U. obtusus, var. minor, apice depresso, Jeffr. varie località!”

Type locality. Described from Golfe de Fos (France) , Vado and Livorno (Italy), Algiers (Algeria) .

Remarks. Type and non– type material in the Monterosato collection was commented by Oliverio & Tringali (2001: 131, 133–135, 124, figs 2a–b; 128, fig. 38a–b; 130, figs 41–42), who also discussed its identity, the distinction from the similar Retusa obtusa (Montagu, 1803), and documented shell variation and gizzard plates morphology, concluding on its actual belonging to the genus Retusa T. Brown, 1827 . Recorded by MolluscaBase (2018) as Retusa minutissima (Monterosato, 1878) .