"This is the difference between a meretrix (harlot) and a prostibula (common strumpet): a meretrix is of a more honorable station and calling; for meretrices are so named a merendo (from earning wages) because they plied their calling only by night; prostibulu because they stand before the stabulum (stall) for gain both by day and night." Prostibula--She who stands in front of her cell or stall.
Proseda--She who sits in front of her cell or stall.

She who later became the Empress Theodora belonged to this class, if any credit is to be given to Procopius.
Nonariae--She that is forbidden to appear before the ninth hour.
Mimae--Mime players.

They were almost invariably prostitutes.
Cymbalistriae--Cymbal players.

They were almost invariably prostitutes.
Ambubiae--Singing girls.

They were almost invariably prostitutes.
Citharistriae--Harpists.