An arrangement of three diatoms from Palos Verdes, California, USA. No makers name, but prepared by LDB Catalani. Dated July 1968 and mounted in Naphrax (R.I. 1.7). Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 40 images stacked in Zerene (Pmax).
The diatoms (left to right) are;
Cocconeis sp.
Navicula multicostata. This name is currently regarded as a synonym of Diploneis crabro var. multicostata (Grunow) Cleve.
Actinoptychus areolatus.