In Greek mythology, the Nereids ( ; Greek: Νηρηΐδες "Nereides", sg.
 Νηρηΐς "Nereis") are sea nymphs (female spirits of sea waters), the 50 daughters of Nereus and Doris, sister to Nerites.
 They often accompany Poseidon, the god of the sea, and can be friendly and helpful to sailors, like the Argonauts in their search for the Golden Fleece.
The Fomorians (Old Irish: Fomoire , Modern Irish: Fomhóraigh ) are a supernatural race in Irish mythology.
 They are often portrayed as hostile and monstrous beings who come from the sea or underground.
 Later, they were portrayed as giants and sea raiders.
 They are enemies of Ireland's first settlers and opponents of the Tuatha Dé Danann, the other supernatural race in Irish mythology.
 However, their relationship with the Tuath Dé is complex and some of their members intermarry and have children.
 The Fomorians have thus been likened to the jötnar of Norse mythology.
The Ursitory ("white women" also known as "Ursitori", "Oursitori", "Ursitele", "Urbitele", "Urditele", "Osatorele", "Ursoi", "Ursoni" or "Urmen", "Uremi", "Ourmes") are a group of three fairies or female spirits of fate in Romani folklore.
 Two of them are good spirits, while one tries to harm people.
 Their queen is Matuya, who makes use of gigantic birds called the charana.
A banshee ( ; Modern Irish "bean sí", from Old Irish: "ban síde" , ] , "woman of the fairy mound" or "fairy woman") is a female spirit in Irish mythology who heralds the death of a family member, usually by shrieking or keening.
 Her name is connected to the mythologically-important tumuli or "mounds" that dot the Irish countryside, which are known as síde (singular "síd") in Old Irish.
In French mythology or folklore, Dames Blanches (meaning literally white ladies) were female spirits or supernatural beings, comparable to the White Women of both Dutch and Germanic mythology.
 The Dames Blanches were reported in the region of Lorraine (Lotharingen) and Normandy.
 They appear (as "Damas blancas", in Occitan), in the Pyrenees mountains, where they were supposed to appear near caves and caverns.
Panchāpsaras (Sanskrit pañcāpsaras) is a lake mentioned in Book III (Aranya Kanda) of the ancient Sanskrit epic Ramayana.
 Its name means [the lake of] Five Apsaras, female spirits of the clouds and waters in Hindu and Buddhist mythology, which can be translated into English as "nymphs", "celestial nymphs" and "celestial virgins".
 The lake is visited by Rama, considered to be the seventh avatar of Vishnu in Hinduism, during his journey through the Dandaka forest.
 The lake is said to had been created by sage and hermit Māṇḍakarṇi through the power of his penance.
In Greek mythology, the were female spirits of curses, particularly of the curses placed by the dead upon those guilty of their death; they were associated with the underworld.
Daayan or Daayani (Hindi: डायन ) is a term for a witch in India descended from the Sanskrit word dakini, which refers to a female supernatural being.
 The dakini appeared in medieval legends in South Asia such as in the "Bhagavata Purana", "Brahma Purana", "Markandeya Purana" and "Kathasaritsagara" as a demon in the train of Kali who feeds on human flesh.
 They are comparable to malevolent or vengeful female spirits, imps or fairies in other cultures, such as the Persian peri.
The aos sí (] , older form aes sídhe ] ) is the Irish term for a supernatural race in Irish mythology and Scottish mythology (usually spelled Sìth, however pronounced the same), comparable to the fairies or elves.
 They are said to live underground in fairy mounds, across the western sea, or in an invisible world that coexists with the world of humans.
 This world is described in the "Lebor Gabála Érenn" as a parallel universe in which the "aos sí" walk amongst the living.
 In the Irish language, "aos sí" means "people of the mounds" (the mounds are known in Irish as "the "sídhe").
 In Irish literature the people of the mounds are also called daoine sídhe ] ; in Scottish mythology they are daoine sìth.
 They are variously said to be the ancestors, the spirits of nature, or goddesses and gods.
In Irish mythology, Clíodhna ( , Clídna, Clionadh, Clíodna, Clíona, transliterated to Kleena in English) is a Queen of the Banshees of the Tuatha Dé Danann.
 Cleena of Carrigcleena is the potent banshee that rules as queen over the "sidheog" (fairy women of the hills) of South Munster, or Desmond.

Question: Clíodhna was the queen of what female spirits in Irish mythology
Answer: Banshees