I tried to trip one and it said it doesn't have legs, here is the description:

A large humanoid form made of clay is standing here. It holds the ***bipedal*** shape of an earth elemental, but it is made entirely from materials and energies found on the prime plane. It stands about five feet tall and most likely weighs somewhere around eight hundred and fifty pounds. Golems such as this one blindly obey the whims of their master, though there is no sign on this creature of who its master might be.

Now since they weigh 850 pounds, they might be too heavy to trip but perhaps that should be the message instead of they have no legs?

valguarnera@carrionfields.com