A Placotrochides cylindrica, holotype, Museum of Tropical Queensland G55627, off Queensland B P. frustum, holotype, USNM 36451, Lesser Antilles; paratype, NMC, Hudson 4B, Lesser Antilles C Placotrochus laevis, USNM 81994, Great Barrier Reef, Australia D Falcatoflabellum raoulensis, upper image, holotype, Museum of New Zealand, CO 258, Kermadec Ridge; lower images, paratype, USNM 94313, Kermadec Ridge. Scale bars: 1mm (A); 2 mm (B); 10 mm (C), except for basal scar, which is 5 mm; 1 mm (D), except latera view, which is 5 mm.