Melaina

In Greek mythology, Melaena or Melena (Μέλαινα, feminine μέλᾱς "black, dark"), Melane   or Melanis  was a Corycian nymph, or member of the prophetic Thriae, of the springs of Delphi in Phocis.

Family
Melaena's father was one of the local river gods, either Kephisos or Pleistos of northern Boeotia. In another account, she was called the daughter of King Hyamus of Hyampolis and Melanthea (Melantho), daughter of Deucalion. Her sister was called Celaeno. 

Melanis was loved by Apollo and bore him Delphos, eponym of Delphi.

Mythology
Melaina was often identified with Thyia who was also named as the mother of Delphos in other traditions. She was usually confused with the chthonic nymph Melinoë, daughter of Persephone by Hades.