Caption:
Indo-Pacific Portuguese man-of-war, Physalia utriculus 1, Azores man-of-war, Physalia physalis 2, and Siphonophora zoophyte, Physsophora disticha 3. Physalies, Physsophore. 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.