Caption:
Sea slug mollusc species. Doris tunicata 1, Doris floridella 2, Felimida purpurea 3, Felimare orsinii 4, Felimare picta 5, Doto coronata 6, Spurilla neapolitana 7, Calliopaea bellula 8, and Dolabrifera ornata 9. Molluscs nus. Chromolithograph from Alfred Fredols Le Monde de la Mer, the World of the Sea, edited by Olivier Fredol, Librairie Hachette et. Cie., Paris, 1881. Alfred Fredol was the pseudonym of French zoologist and botanist Alfred Moquin-Tandon, 1804-1863.