Two examples of Navicula splendida. No makers name or location. Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 37 images Pmax. Rims upwards towards the coverslip (underside views). Couldn’t get close enough with the 63x Leitz.
Navicula splendida W.Gregory, nom. illeg. 1856. Published in: Gregory, W. (1856). On the post-Tertiary diatomaceous sand of Glenshire, Part II. Containing an account of a number of additional undescribed species. Transactions of the Microscopical Society, New Series 4: 35-48, pl. V. Page 44, Plate 5, Figure 14. This name is currently regarded as a synonym of Diploneis splendida Cleve. 1894. Published in: Cleve, P.T. (1894). Synopsis of the naviculoid diatoms. Part I. Kongliga Svenska Vetenskapsakademiens Handlingar Series 4 26(2): 1-194, 5 pls. Page 87.