Catalogue of the primary types of marine molluscan taxa described by Tommaso Allery Di Maria, Marquis of Monterosato, deposited in the Museo Civico di Zoologia, Roma Author Appolloni, Massimo Author Smriglio, Carlo Author Amati, Bruno Author Lugliè, Lorenzo Author Nofroni, Italo Author Tringali, Lionello P. Author Mariottini, Paolo Author Oliverio, Marco text Zootaxa 2018 2018-09-14 4477 1 1 138 journal article 29178 10.11646/zootaxa.4477.1.1 5846b72f-37ca-4033-af93-c20fb297add9 1175-5326 1454652 5A6191BD-03BA-4374-B779-B3E73652BC7C gregarius, Vermetus [ Vermetus triquetrus Ant. Bivona, 1832 ] ( Figures 19G, H ) 1878c: 88 [XIX: 402]—available name Type material. MCZR –M–30027 —2 aggregates “ Vermetus gregarius Monts = V. triqueter var. β Ph., Moll. Sic. I. p. 170, t. IX f. 22 Palermo”// 1 aggregate “ Vermetus gregarious Monts, scogli dell’Arenella pr. Palermo buon tipo” MCZR –M–21234 —1 aggregate “Biv. triqueter Monts = Vermetus triqueter, Biv. var. gregaria = V. gregarius Monts. Sferracavallo pr. Palermo”. Type locality. Described from Mediterranean Sea. Remarks. Name proposed to raise to species level Vermetus triqueter var. β Philippi, 1836 . Subsequently figured (1892c, pl. II, figs 1, 2). Recorded by MolluscaBase (2018) as a synonym of Vermetus triquetrus Ant. Bivona, 1832 .