Same entry, according to Adler, in the Ambrosian Lexicon (287).
This toponym is otherwise poorly-attested, but it does occur (in the accusative case) in Georgius Cedrenus 2.213, part of his narrative of the efforts of Basil I (Byzantine emperor 867-886) to overcome the Paulicians. He glosses it there as 'the metropolis of the Manicheans'.
Should this not be the correct referent of the present entry, other tenuous possibilities are:
[NF] Cameria, an unlocated site in central Italy. See Barrington Atlas map 44, Unlocated Toponyms.
[DW] Kameiros, on Rhodes; cf. alpha 1982, kappa 280.