From the introduction:
A strange people. You are one of them.
A people of humanoid reptiles, each one different from the others: they are the Saurids, the Sons of the lizards.
No Saurid is like another: talls or smalls, snake-like or brawny, with two or four arms, with small or protuberant eyes, with vivid or shy colors... The most variable combinations are possible.