Mémoires sur les animaux sans vertèbres, Paris, G. Dufour, 1816 invertebrates woodshole, This illustration features a series of detailed scientific drawings of various cephalopod forms, showcasing their anatomy and structure. The drawings include labeled parts such as the mantle, fins, and arms, highlighting features like the siphon and beak. Each specimen is meticulously rendered, providing a comprehensive overview of their morphology. The layout includes numbers for reference, suggesting a classification system for these marine organisms, with a specific focus on the species Phallusia. Overall, the image serves as an educational resource, illustrating the complexity and diversity of cephalopod anatomy.