A Trinacria (probably Trinacria regina) from Mors, Denmark, in an arrangement with three Cerataulus edwardsii. The Trinacria is mounted with the rim downwards, and the Cerataulus with their rims upwards towards the coverslip. Prepared by Bernard Hartley. Mounted in Styrax and dated August 1988. Olympus BHB microscope using 450nm LED light. 20x Nikon Plan Apo NA 0.65 objective. Olympus Aplanat Achromat condenser, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 29 images stacked in Zerene (Pmax).