Actinoptychus halionyx (currently accepted name Actinoptychus splendens var. halionyx). Arrangement with three examples on the slide, imaged using a 20x Nikon Plan Apo NA 0.65 objective. Prepared by Watson and Sons. Mounted in Styrax. 63x Leitz Pl Apo NA 1.40 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 16 images stacked using Zerene (Pmax).