This beast is more commonly
known as "The Devourer" in ancient Egyptian mortuary
lore. Part lioness, part hippopotamus and part crocodile which
is frequently seated on a small pylon, but the most common depiction
of Amemait is in the pictures of the Judgement
scene from the 'Book of the Dead' - (the walls of Der el
Medineh also show much detail).
She is also called 'She
who destroys the wicked', it was her function to devour the hearts
of the dead who did not past the test of Judgement and thus destroys
totally the soul of the dead.
Unfortunately very little
more is known beyond this point.