Demetrios1453
Hero
2e. They were in The Illithiad.
http://www.dmsguild.com/product/17448/Monstrous-Arcana-The-Illithiad-2e
I was wondering if they were in that. I found them in some 3e products I own (mentioned in Lords of Madness and statted in the Expanded Psionics Handbook), but couldn't trace them any further back...