Sinetectula gen. nov., a new genus of Pisaniidae (Gastropoda: Buccinoidea) from the tropical Indian and Pacific Oceans Author Fraussen, Koen 5F9EFCF2-5BCF-486E-8D3E-088D85C45882 Leuvensestraat 25, 3200 Aarschot, Belgium. Honorary Attaché and Research Associate, Institute of Systematics, Evolution, Biodiversity (ISYEB), Muséum national d’histoire naturelle (MNHN), CNRS, SU, EPHE, UA, CP 51, Paris, France. koen.fraussen@skynet.be Author Vermeij, Geerat J. 14F57ADB-D930-4C52-AFCC-7B1F3248921E Department of Earth and Planetary Sciences, University of California, Davis, California 95616, USA. gjvermeij@ucdavis.edu text European Journal of Taxonomy 2021 2021-05-10 748 155 176 http://dx.doi.org/10.5852/ejt.2021.748.1351 journal article 10.5852/ejt.2021.748.1351 8d4fbb8d-b60b-4985-9599-fd161329d224 2118-9773 4770238 D5682561-AF13-475A-81DB-123686456C53 Sinetectula nigricostata ( Reeve, 1846 ) gen. et comb. nov. Figs 7 , 10R Buccinum nigricostatum Reeve, 1846 : [1], pl. 10 fig. 73 (see Fig. 10R ) ( type (s) not traced). Parviphos nigricostatus Watters 2009: 266 . Type locality Panama (under stones at low water)”. Material examined PANAMA2 lv ; Gulf of Chiriqui , off Canal of Afuera ; depth 70–80 m ; 1989; KF 0533 1 lv ; Gobernadora Island , at low tide ; KF 3378 (see Fig. 7A–D ) . Distribution Sinetectula nigricostata gen. et comb. nov. is restricted to the central eastern Pacific. Known from Panama . Remarks Sinetectula nigricostata gen. et comb. nov. is charactarised by the convex whorls and fine spiral sculpture in combination with a peculiar pattern consisting of well-defined spiral lines. S. nigricostata gen. et comb. nov. is the only member of the genus that shares with S. cinis gen. et comb. nov. the presence of a labral denticle (see Fig. 7D ). The labral denticle is usually situated at the 7 th (vs 8 th in S. cinis gen. et comb. nov. ) spiral interspace. Depending on the strength of the secondary spiral cords, the first interspace may be counted double in the case that it is divided by a secondary spiral cord that has become as strong as the primary spiral cords, thus with the labral denticle appearing in the 8 th interspace. Sinetectula cinis gen. et comb. nov. differs from S. nigricostata gen. et comb. nov. in its laterally more flattened spire (instead of convex whorls), the broader spiral cords, the weaker axial ribs that are higher in number, the stretched base (instead of constricted) with a shorter siphonal canal, a less defined pattern of lines, and the slightly larger adult size.