The stars called PLEIADES in the constellation of Taurus commemorate the PLEIADES, daughters of Atlas & Pleione, daughter of Oceanus. The rising of the PLEIADES is a sign of summer and their setting of winter, and for this reason this constellation has been more honored than the others.
It is said that the PLEIADES are seven in number but only six can be seen. Some say that the reason is that all mated with immortals except one of them (Merope 1). However others say that because of the sack of Troy and the destruction of the house of Dardanus 1, Electra 3 left her sisters and took a place in the Artic circle. That is why they sing:
But ancient astronomers placed the PLEIADES apart from the constellation Taurus. They say that when Pleione once was travelling with her daughters through Boeotia, she was attacked by Orion and, as she managed to escape from him, he sought her for seven years without being able to find her. Zeus then, pitying the girls, appointed a way to the stars and later astronomers said that they were in the Bull's tail (Taurus' tail). That is why Orion goes after them as they flee towards the west.
Alcyone 1 This was the second of the PLEIADES to have intercourse with Poseidon.
Celaeno 2 Others say her father was Ergeus but they do not say who her mother was.
Electra 3 This is the one of the PLEIADES who does not appear in the sky because of the death of Dardanus 1 and the loss of Troy.
Maia This is the eldest of the PLEIADES. She was said to have surpassed her sisters in beauty. Brought up Arcas 1, son of Zeus & Callisto, in Arcadia.
Merope 1 This is the seventh of the PLEIADES. She married a mortal man and she repents of it, and from shame at the deed she alone of the sisters hides herself in the sky.
Sterope 3
Taygete This is the one of the PLEIADES who consecrated to Artemis the Cerynitian Hind with the golden horns that Heracles 1 had to fetch.
...In Troy's last hour...Electra shrouded her form in mist and cloud, and left the Pleiad-band...Still rises up...their bright troop in the skies; but she alone hides viewless ever since the town of her son Dardanus in ruin fell... [Quintus Smyrnaeus, The Fall of Troy 13.555]