An arrangement of three Actinoptychus maculatus from Oamaru, New Zealand. Coverslip thickness 0.004″ (0.1mm). Dated 1893. Prepared by WA Firth. Olympus BHB microscope using 450nm LED light. 20x Nikon Plan Apo NA 0.65 objective. Olympus Aplanat Achromat condenser, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 18 images stacked in Zerene (Pmax).
There is some faint writing on the label and a ‘?’. I’m not sure as to why, as these do look like A. maculatus. Also known as Actinoptychus vulgaris var. maculatus.