From right to left :
first cartouche : Ptolemaïs
second cartouche : Caesar living for ever, beloved of Ptah, Aset(Isis)
Egyptians used to write stanger names like to-day jewellers write your names in cartouches when you visit modern Luxor (it was very usefull for Champollion !).

You can see better pictures there and and there.

For some details regarding the naming convention of the pharaohs, see on my website if you speak french and there if not.

Since the Ptolemies adopted Pharaonic titulature and customs it was rather superficial and one can think they have "copied-pasted" ancient names.