Glyphodiscus bipunctatus from Allan’s Farm, Oamaru, New Zealand. Single example on the slide. Prepared by Richard Gosden. Mounted in Naphrax and dated 10th June 1967. Olympus BHB microscope using 450nm LED light. 63x Leitz Pl Apo NA 1.40 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 22 images stacked in Zerene (Pmax).