Passage 8.36.4
Μεθυδρίου δὲ ὡς τριάκοντα ἀπέχει σταδίους Νυμφασία πηγή· τοσοῦτοι δὲ ἀπὸ Νυμφασίας ἕτεροι πρὸς τοὺς Μεγαλοπολιτῶν εἰσι καὶ Ὀρχομενίων τε κοινοὺς καὶ Καφυατῶν ὅρους.
From Methydrium at a distance of about thirty stades is a spring called Nymphasia; from Nymphasia it is likewise about another thirty stades to the boundaries shared jointly by the Megalopolitans, Orchomenians, and Caphyatans.