Oeuvres du comte de Lacépède A Paris Chez F.D. Pillot 1830-1833 dolphin natural history whale crustacea zoology vertebrates pictorial works physalie cylindrique dauphin ventru, The illustration depicts a marine creature known as a cylindrical whale, alongside a diagrammatic representation of its anatomy. The whale is shown in profile, emphasizing its elongated body and prominent dorsal fin. Attached to the whale is a length of fishing line with a hook, indicating the context of its capture or study. Below the whale, a smaller fish is included for scale and comparison, demonstrating the ecological interaction between species in their aquatic environment. The detailed lines convey the texture of the whale's body, while labels and annotations provide scientific names and classifications, reflecting the study of marine biology and the classification of cetaceans. The overall composition serves to highlight anatomical features and the relationship between the two depicted species.