Navicula carinifera from Hong Kong harbour. Single example on the slide. No makers name, but based on the handwriting and style I think it was prepared by William Allott Firth. 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. 57 images stacked in Zerene (Pmax).
Navicula carinifera Grunow 1874. Published in: Schmidt, A.[W.F.] (1874). Atlas der Diatomaceenkunde. Series I, Heft 1. pp. pls 1-4. Aschersleben: [Verlag von Ernst Schlegel]. Plate 2, Figure 1.