ANKHIROE (or Anchiroe) was the Naiad Nymph of a well, spring or fountain in the town of Megalopolis in Arkadia (southern Greece).
Pausanias, Description of Greece 8. 31. 4 (trans. Jones) (Greek travelogue C2nd A.D.) :
"[At Megalopolis in the enclosure of Demeter and Persephone:] The table also has a representation of Nymphai, Neda carrying the infant Zeus and another Arkadian Nymphe Anthrakia holding a torch, and Hagno with a water-jar in one hand and a drinking cup in the other; Ankhiroe and Myrtoessa are carrying water-jars and in fact water is pouring down from them."
- Pausanias, Guide to Greece - Greek Geography C2nd AD