Mythology of the Constellations - http://www.emufarm.org/~cmbell/myth/myth.html

Constellation Mythology - http://www.geocities.com/seagryphon/constellations.html#99

Constellation List and stories - http://einstein.stcloudstate.edu/Dome/constellns/constlist.html  

Alphabetical Listing of Constellations with links to myths - http://www.astro.wisc.edu/~dolan/constellations/constellation_list.html

Windows to the Universe –www.windows.ucar.edu -  Click on Enter the Site, then find Myths. Included are myths from many cultures.

The Eighty-eight Constellations - http://www.coldwater.k12.mi.us/lms/planetarium/myth/index.html   - All the major myths and lots of minor ones.

The Constellations – http://www.dibonsmith.com/menu.htm –a large index of information. Click on Constellations Table, Graphics of all Constellations, and Mythic Names.