Caption:
European perch, Perca fluviatilis 1, velvet worm, Peripatus iuliformis 2, lacewing, Perla marginata 3, and pearl oyster, Isognomon isognomum 4. Perche, Peripate, Perle, Perne. Handcoloured steel engraving by du Casse after an illustration by Adolph Fries from Felix-Edouard Guerin-Meneville's Dictionnaire Pittoresque d'Histoire Naturelle (Picturesque Dictionary of Natural History), Paris, 1834-39.