"The Hylleans are never mentioned in any historical narrative, but always in mythical [Greek] legends; and they appear to have been known to the geographers only from mythological writers. Yet they are generally placed in the islands of Melita and Black-Corcyra, to the south of Liburnia." _C. O. Müller, History and Antiquity of the Doric Race, volume 1, introduction._ HYMETTUS. One of the noted mountains of Attica, "celebrated for its excellent honey, and the broad belt of flowers at its base, which scented the air with their delicious perfume." _M. and R. P. Willson, Mosaics of Grecian History, page 9._ HY-NIALS AND EUGENIANS. "As surnames were not generally used, either in Ireland or anywhere else, till after the 10th century, the great families are distinguishable at first only by their tribe or clan names. Thus, at the north we have the Hy-Nial race; in the south the Eugenian race, so called, from Nial and Eoghan, their mutual ancestors." _T. D. McGee, Popular History of Ireland, book 1, chapter 2 (volume 1)._ HYPATIA. See ALEXANDRIA: A.D. 413-415. HYPERBOREANS, The. A mythical people, supposed by the ancients to dwell beyond the north wind, and therefore to enjoy a perfect climate in the extreme north. HYPHASIS, The. The ancient name of the river Sutlej, in the Punjab. HYRCANIA. HYRCANIAN SEA. "The mountain-chain which skirts the Great Plateau [of Iran] on the north, distinguished in these pages by the name of Elburz, broadens out after it passes the south-eastern corner of the Caspian Sea till it covers a space of nearly three degrees (more than 200 miles). Instead of the single lofty ridge which separates the Salt Desert from the low Caspian region, we find between the 54th and 59th degrees of east longitude three or four distinct ranges, all nearly parallel to one another, having a general direction of east and west. … Here in Persian times was settled a people called Hyrcani; and from them the tract derived the name of Hyrcania (Vehrkana), while the lake [Caspian Sea] on which it adjoined came to be known as 'the Hyrcanian Sea.' The fertility of the region, its broad plains, shady woods, and lofty mountains were celebrated by the ancient writers." _G. Rawlinson, Five Great Monarchies: Persia, chapter 1._ "In the inscriptions of the Achæmenids their land [Hyrcania] is known as Valkana; the modern name is Jorjan. Here, according to the Greeks, the mountains were covered with forests of oaks, where swarms of wild bees had their hives; in the valleys vines and fig-trees flourished, and the soil down to the sea was so luxuriant that corn grew from the fallen grains without any special sowing." _M. Duncker, History of Antiquity, book 7, chapter 1._ See, also, PARTHIA. {1692} I. IAPYGIANS, The.