Lernaean Hydra that Hera placed the Hydra and crab as constellations in the night sky after Heracles slew him. When the sun is in the sign of Cancer (Latin for "The Crab"), the constellation Hydra has its head nearby. In fact, both constellations derived from the earlier Babylonian signs: Bashmu ("The Venomous Snake") and Alluttu ("The Crayfish"). Primary sources Secondary sources Lernaean Hydra The Lernaean Hydra or Hydra of Lerna (, "Lernaîa Hýdra"), more often known simply as the Hydra, is a serpentine water monster in Greek and Roman mythology. Its lair was the lake of Lerna in the Argolid, which was
Dictionary of Greek and Roman Biography and Mythology Dictionary of Greek and Roman Biography and Mythology The Dictionary of Greek and Roman Biography and Mythology (1849, originally published 1844 under a slightly different title) is an encyclopedia/biographical dictionary. Edited by William Smith, the dictionary spans three volumes and 3,700 pages. It is a classic work of 19th-century lexicography. The work is a companion to Smith's "Dictionary of Greek and Roman Antiquities" and "Dictionary of Greek and Roman Geography". The work lists thirty-five authors in addition to the editor, who is also an author for some definitions and articles. The authors were classical scholars, primarily from Oxford, Cambridge, Rugby