A slide of Tryblionella punctata (spelt Triblionella on the label) from the Gulf of Naples. A range of them in between two Eupodiscus diatoms. No makers name. Olympus BHB microscope using 450nm LED light. As well as an image with a 10x Nikon Plan Apo NA 0.45 objective, I imaged one using the 63x Leitz Pl Apo NA 1.40 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 39 images stacked in Zerene (Pmax). ‘S’ shaped cross section.
Tryblionella punctata W.Smith 1853. Published in: Smith, W. (1853). A synopsis of the British Diatomaceae; with remarks on their structure, function and distribution; and instructions for collecting and preserving specimens. The plates by Tuffen West. In two volumes. Vol. I. pp. [i]-xxxiii, 1-89, pls I-XXXI. London: John van Voorst, Paternoster Row. Page 36, Plate X [10], Figure 76 a’; Supp. Plate XXX [30], Figure 261.
I have recently imaged a few slides by this maker, all of which are nice. If you want to see others search for CCCCC in the ‘Search’ function.