Triceratium westianum from Springfield, Barbados. Single example on the slide, in between two other diatoms to aid with finding it. I think this is now called Trilamina westiana. Prepared by WA Firth. Olympus BHB microscope using 450nm LED light. 100x Leitz Pl Apo NA 0.60-1.32 objective, oil immersion, iris wide open. Olympus Aplanat Achromat condenser, oil immersion, bright field lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 12 images stacked in Zerene (Pmax).