Glorioptychus callidus. Single example on the slide. No location given. Mounted in Hyrax and dated 1949. Prepared by Northern Biological Supplies (NBS). 63x Leitz Pl Apo 1.4 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 56 images stacked in Zerene (Pmax).