Figure 4. Enigmaticolus nipponensis comb. nov. A in Integrative taxonomy of enigmatic deep-sea true whelks in the sister-genera Enigmaticolus and Thermosipho (Gastropoda: Buccinidae)

Figure 4. Enigmaticolus nipponensis comb. nov. A, Natsu site, Iheya North hydrothermal field (27°46.8522'N, 126°54.0584'E), 1078 m deep, shell length 90.4 mm (NSMT-Mo 79173). B, Aki site, Iheya North hydrothermal field (27°46.103'N, 126°54.090'E), 1086 m deep, shell length 84.6 mm (NSMT-Mo 79174). C, Aki site, Iheya North hydrothermal field (27°46.103'N, 126°54.090'E), 1086 m deep, shell length 79.0 mm (NSMT Mol-79175). D, Kuroshima Knoll hydrocarbon seep site (24°07.830'N, 124°11.562'E), 641 m deep, shell length 88.7 mm (NSMT Mol-79176). Scale bars = 2 cm.