Lepidosiren, [231] f., [233]Sluiter, [38]Smelt, [568], [411]Smitt, [569] n., [714] n.Social Ascidians, [71]Sole, [687]Solea, [687], [685];S. vulgaris, [686], [687]Solenocytes, [29], [126], [127]Solenognathus, [634]