Encyclopedia Entry:
A higher race of lamia. Like their cousins, echidna have the upper body of a human and the lower body of a snake. Their extraordinarily powerful magic sets them apart from the other lamia races. Their personalities vary between individuals, but the one common factor is their extraordinary libido.
Very few in number, they make in the deepest parts of perilous dungeons and seldom appear in the outside world. On the assumption that anyone powerful enough to reach their lair is worth having a child by, echidna scatter treasure about their home dungeon to lure humans toward the center.