Oxy,

<< "....the last 9 of them (chapters 20 to
28) make up the Suttamaalaa. "
.....................................................
Is the other name of SuttAmAlA (chapters 20 to
28) Culla SaddanItti ? >>

Yes, that's correct. This also agrees with what W. Geiger says (p.
55 -- translation). This part takes up about a third (pp. 603-928) of
the entire Saddaniiti work.

Jim