154).
[Illustration: Fig.

153 .-- Plan of tomb of Khnumhotep, at Beni Hasan.] [Illustration: Fig.

154 .-- Plan of unfinished tomb, Beni Hasan.] [Illustration: Fig.

155 .-- Funeral processions and ceremonies from wall- painting in tomb of Manna, Thebes, Nineteenth Dynasty.] To form a _serdab_ in the solid rock was almost impossible; while on the other hand, movable statues, if left in a room accessible to all comers, would be exposed to theft or mutilation.

The _serdab_, therefore, was transformed, and combined with the stela of the ancient mastabas.