Then again the Hyrkanians rode from the blue east. The withdrawal of the imperial legions from Zamora was their incitement. Zamora fell easy prey to their thrusts, and the Hyrkanian king established his capital in the largest city of the country. This invasion was from the ancient Hyrkanian kingdom of Turan, on the shores of the inland sea, but another, more savage Hyrkanian thrust came from the north. Hosts of steel-clad riders galloped around the northern extremity of the inland sea, traversed the icy deserts, entered the steppes, driving the aborigines before them, and launched themselves against the western kingdoms. These newcomers were not at first allies with the Turanians, but skirmished with them as with the Hyborians; new drifts of eastern warriors bickered and fought, until all were united under a great chief, who came riding from the very shores of the eastern ocean. With no Aquilonian armies to oppose them, they were invincible. They swept over and subjugated Brythunia, and devastated southern Hyperborea, and Corinthia. They swept into the Cimmerian hills, driving the black-haired barbarians before them, but among the hills, where cavalry was less effectual, the Cimmerians turned on them, and only a disorderly retreat, at the end of a whole day of bloody fighting, saved the Hyrkanian hosts from complete annihilation. While these events had been transpiring, the kingdoms of Shem had conquered their ancient master, Koth, and had been defeated in an attempted invasion of Stygia. But scarcely had they completed their degradation of Koth, when they were over-run by the Hyrkanians, and found themselves subjugated by sterner masters than the Hyborians had ever been. Meanwhile the Picts had made themselves complete masters of Aquilonia, practically blotting out the inhabitants. They had broken over the borders of Zingara, and thousands of Zingarans, fleeing the slaughter into Argos, threw themselves on the mercy of the westward-sweeping Hyrkanians, who settled them in Zamora as subjects. Behind them as they fled, Argos was enveloped in the flame and slaughter of Pictish conquest, and the slayers swept into Ophir and clashed with the westward-riding Hyrkanians. The latter, after their conquest of Shem, had overthrown a Stygian army at the Nilus and over-run the country as far south as the black kingdom of Amazon, of whose people they brought back thousands as captives, settling them among the Shemites. Possibly they would have completed their conquests in Stygia, adding it to their widening empire, but for the fierce thrusts of the Picts against their western conquests. Nemedia, unconquerable by Hyborians, reeled between the riders of the east and the swordsmen of the west, when a tribe of Æsir, wandering down from their snowy lands, came into the kingdom, and were engaged as mercenaries; they proved such able warriors that they not only beat off the Hyrkanians, but halted the eastward advance of the Picts.