Libra is the seventh sign of the zodiac and is the only one that is not symbolized by a living creature. It is said that it was created in Roman times to maintain a balance between Virgo - Scorpio pair. In Genesis, Libra is considered to be Eve who crushed the head of the Scorpio at the new moon subsequently followed by the Autumnal Equinox.
Scorpio: October 24th - November 22nd
The eighth sign of the zodiac, Scorpio is symbolized by a Scorpion. As per Greek mythology it was placed in the zodiac by Hera as a reward for killing Orion - the Hunter. The fascinating story of Scorpio also finds its roots in Jewish myth and is also sometimes referred to as the Babylonian legend, Gilgamesh.
Sagittarius: November 23rd - December 21st
The ninth sign of the zodiac, Sagittarius is symbolized as a Centaur with an arrow. Greek Mythology has it that this Centaur is Crotus, the son of the lusty God - Pan and Eupheme.