Proceedings of the Zoological Society of London, London, Academic Press, periodicals, zoology, The illustration features detailed studies of the shell of Philomedes polynii, a species of marine ostracod. The central focus is on the highly textured carapace, showcasing its intricate patterns and unique morphology. Surrounding views display different angles and components of the shell, including outlines of the valves and other anatomical features. Each numbered section highlights specific characteristics, providing insights into the organism's structure and classification. The work reflects a meticulous attention to detail, typical of scientific illustrations from the era.