An arrangement of three Actinoptychus senarius from Weston-Super-Mare, Avon, UK. Mounted in Styrax and dated 18/9/1994. Some debris in the mountant, visible in the more hyaline parts of the diatoms. Prepared by Klaus Kemp. Olympus BHB microscope using 450nm LED light. 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. 36 images stacked in Zerene (Pmax).
Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843. Published in: Ehrenberg, C.G. (1843). Verbreitung und Einfluss des mikroskopischen Lebens in Süd- und Nord-Amerika. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1841: [291]–445 + [1, Berichtigungen], pls 1–4. Page 400, Plate 1.1 Figure 27, Plate 1.3 Figure 21.