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 imperspicuus, Adeorbis [ Tjaernoeia imperspicua Monterosato, 1875] ( Figures 28O, P ) 1875b: 36 [XIII: 262]—available name Type material. MCZR–M–30038— 10 sh “ Adeorbis imperspicuus Monts. Palermo 30—90 m !” Type locality. Described from Palermo ( Sicily ). Remarks. Adeorbis imperspicuus Monterosato, 1875 is recorded as nomen nudum in MolluscaBase (2018) giving validity to Tjaernoeia exquisita (Jeffreys, 1883). However, the original description of Monterosato is fully diagnostic [“Palermo 90–110 m ! Rassomigliante in piccolo all’ A. pulchralis , S. Wood , fossile del Crag.”— “Palermo 90–110 m ! Resembling a miniature of A. pulchralis , S. Wood , fossil from the Crag.”], and this must be the name for the species [ new status ].