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 horridus, Vermetus [ Thylacodes arenarius (Linnaeus, 1758) ] ( Figures 19I , J ) 1892c: 34, pl. IV, figs 1–3, 6, 7 [XLIV: 1036, 1057, figs 1–3, 6, 7]—available name Type material. MCZR–M–5800 —4 sh “ V. horridus Monts forma tipica juv. ved. Monog. Verm. p. 34. t. IV f. 7 Palermo!!”. MCZR–M–5794 —4 sh “ Vermetus horridus Monogr. Vermetidae esemplari figurati nella tav. IV Palermo e Catania”. Type locality. Described from Acitrezza and Palermo ( Sicily ). Remarks. Recorded by MolluscaBase (2018) as a synonym of Thylacodes arenarius (Linnaeus, 1758) . petraea, Bivonía [ Dendropoma cristatum (Biondi, 1859) ] 1884g : 61 [XXX h: 641]—available name Type material. Types are those of Vermetus glomeratus Bivona (if still existing). Type locality. Described from Palermo ( Vermetus glomeratus Ant. Bivona, 1832 and Philippi, 1836 ), Catania ( V. cristatum Biondi, 1859 ), and localities of Mediterranean Sea. Remarks. Replacement name for Vermetus glomeratus Ant. Bivona, 1832 (not Serpula glomerata Linnaeus, 1758 ). As suggested by Monterosato himself ( 1884g : 61), and confirmed by Scuderi (1995) , this is a junior synonym of Vermetus cristatus Biondi, 1859 . Recorded by MolluscaBase (2018) as a synonym of Dendropoma cristatum (Biondi, 1859) .