Canis Major (The Greater Hunting Dog) - One of Orion's two hunting dogs, giving chase to Lepus (The Hare). Contains Sirius (The Dog Star), the brightest star in the sky.
Taurus
Corona Australis (The Southern Crown) - Wreath that sits at the feet of Sagittarius.
Gemini
Andromeda - Princess of Aethiopia that was sacrificed to Poseidon and put in the sky, next to her husband, Perseus.
Cancer
Delphinus (The Dolphin) - A messenger sent by Posidon, in the form of a dolphin, to Amphitrite went he was courting her.
Leo
Sagitta (The Arrow) - The arrow of the legendary Greek hero Heracles. A small (third smallest) but distinctive constellation in prominent area.
Virgo
Ursa Major (The Greater Bear) The nymph Callisto, lover of Zeus, turned into a bear by Hera and made into a constellation by Zeus.
Libra
Lyra (The Lyre) - The lyre of Orpheus, the mythical musician, poet, and prophet. Made by Hermes and given to Apollo in a bargain. Contains Vega, the first star to be photographed besides the Sun.
Scorpio
Serpens (The Serpent) - A snake held by the healer Asclepius (Ophiuchus) and later resurrected. Actually two constellations connected to make one. Serpens Caput (The Serpent's Head) and Serpens Cauda (The Serpent's Tail).
Sagittarius
Draco (The Dragon) - The dragon, Ladon, guardian of the golden apple tree. Later slain by Heracles.
Capricorn
Corvus (The Crow) - A crow sent by Apollo to find water. Appears on the back of Hydra, next to Crater (cup).
Aquarius
Cygnus (The Swan) - Zeus disguised as a swan.
Pisces
Pegasus (The Winged Horse) - Son of Poseidon and Medusa and companion of Perseus.
Hope you enjoyed. If you're picking up what I'm putting down, you can check out my other articles and my Astrology collection here:
