Passage 8.3.6
ἐπὶ δὲ τῷ γένει παντὶ τῷ ἄρσενι θυγάτηρ Λυκάονι ἐγένετο Καλλιστώ. ταύτῃ τῇ Καλλιστοῖ---λέγω δὲ τὰ λεγόμενα ὑπὸ Ἑλλήνων---συνεγένετο ἐρασθεὶς Ζεύς· Ἥρα δὲ ὡς ἐφώρασεν, ἐποίησεν ἄρκτον τὴν Καλλιστώ, Ἄρτεμις δὲ ἐς χάριν τῆς Ἥρας κατετόξευσεν αὐτήν. καὶ ὁ Ζεὺς Ἑρμῆν πέμπει σῶσαι τὸν παῖδά οἱ προστάξας, ὃν ἐν τῇ γαστρὶ εἶχεν ἡ Καλλιστώ·
Within the entirety of Lycaon's male offspring, there was born to him a daughter named Callisto. To this Callisto—as I am repeating the story that the Greeks tell—Zeus became passionately attracted and lay with her. When Hera perceived this, she transformed Callisto into a bear; Artemis, wishing to please Hera, shot her down with arrows. Zeus dispatched Hermes with orders to save the child whom Callisto was carrying in her womb.