I found a progenitor to my Atlantean race. They are the Anunnaki from the new Pathfinder Bestiary 5. They will be NPCs because they are Mythic.
Here is a link to the d20pfsrd for them. Some of the abilities that I really like are:
- bestow knowledge
- mimetic memory
- morphic anatomy
- morphic body
- psychic warding
These are perfect abilities for the Atlantean biomancers. The Devolution ability makes the degeneration of humans in my campaign possible.