Les, mollusques, marins, du, Roussillon, Paris, J.-B. Baillière, 1882-1898, France, mollusks, Roussillon, province, This visual representation showcases a variety of marine mollusks from the Roussillon region, specifically focusing on the Pelecypoda class. The diagram depicts multiple views of different shell types, labeled with corresponding numbers for easy identification. Each specimen is intricately detailed, illustrating the unique features of their shapes and patterns. The layout presents a systematic view aimed at aiding in the study and classification of these mollusks, highlighting their diversity and physical characteristics. The accompanying labels provide additional information about each type, emphasizing the scientific inquiry into marine life in the region.