1635. The earwig (Forficula auricularia) and the thrips are also insects too destructive to be omitted in our list, and too well known to require description. Their singular formation has caused each of these insects (and the families to which they respectively belong) to be raised to the rank of distinct orders, as already noticed. Fig. 290. f represents Thrips physapus of the natural size, and h the same insect greatly magnified.