Appearing to be a cross between a massive lion, with the top half of a human woman. The woman top half has sharp cat-like teeth and eyes however. Often standing over 10' tall.
Ecology and Habitats
The following excerpt is taken from D20PFSRD.com
Lamias are attracted to the ruined and forsaken parts of the world. Crumbling keeps, abandoned cities, and forgotten monuments all satisfy these deadly hunters’ cruel aesthetic—particularly those in arid or otherwise lifeless environs. Foremost, though, lamias favor decrepit temples. They delight in seeing the shrines of good deities in ruins and go out of their way to bring hardship to thriving holy places. Lamias look to the eldest female of the group as their leader, mother, and shaman, cleaving to her with fanatical reverence. While lamias shun most religious followings—viewing such as the source of the curse that blighted them with bestial forms—lamia elders claim to hear the whispers of the scouring desert winds and know the cold whims of the stars, drawing upon such mystical sources to lead their people. The lamias presented here are but the most common and least powerful members of this cursed race, with others bearing serpentine, avian, and even more perverse forms.