Ptolemaic rulers and consorts:
Ptolemy V of Egypt Epiphanes and Cleopatra I of Egypt
Ptolemy VI of Egypt Philometor and Cleopatra II of Egypt
Ptolemy VIII of Egypt and Cleopatra III of Egypt Euergetes
(Kokke)
Ptolemy IX of Egypt Philometor Soter II (Lathyros) and Cleopatra
IV of Egypt (also Cleopatra Selene)
Ptolemy X of Egypt Alexander I and Cleopatra V of Egypt Berenice
III
Ptolemy XII of Egypt Neos Dionysos (Auletes) and Cleopatra VI of
Egypt Tryphaena
Ptolemy XIII of Egypt and Cleopatra VII of Egypt
http://www.wikipedia.org/wiki/Ptolemaic_dynasty
Cleopatra Selene (40 BC - 6 AD), sometimes referred to as
Cleopatra VIII, was the daughter of Cleopatra VII of Egypt and Mark
Antony. In about 26 BC she married Juba II of Numidia, and as a
wedding present Augustus Caesar made Cleopatra Selene queen of
Mauretania in her own right.
They had at least two children: Ptolemy of Mauretania (1 B.C. -
40 A.D.) and Drusilla of Mauretania.(b. 5 A.D.); there may also
have been a daughter named Cleopatra.
http://www.wikipedia.org/wiki/Cleopatra_Selene
So, while there was a Cleopatra VIII and possibly a ninth,
neither were Queen of Egypt.
Note - there seems to be a contradiction regarding Cleopatra
Selene, but that lies with the source.