DYES. 345 “scarlet” with the kermes established, properly concludes that the kermes dye was known before the times of Moses ; that the dye was known to the Egyptians in the time of Moses, for the Israelites must have carried it along with them from Egypt; and that the Arabs received the name hermes with the dye, from Armenia and Persia, where it was indigenous, and had been long known. The kermes has been long superseded by the American cochineal (Coccus cacti), which is far superior to any ancient dye. This very singular insect belongs to the order He- miptera, and the various species are often called scale insects; they are of diminutive size, the males winged, the females without these appendages; the antenne are long and fili- form in the male, the legs short. When young they are tolerably active, “having much the appearance of tiny red tortoises, and feeding on the stems or leaves of plants, pierc- ing them by means of a long and sharp rostrum, which goes to the very centre of the shoot, causing the sap to flow in abundance, by which means great injury is done, especially to the vines. In this state they continue growing in size for some time; but the period soon arrives when the sexes undergo a very singular difference in their transforma- tion. All the insects now affix themselves to the surface of