Passage 5.17.2
τὰς δὲ Ἑσπερίδας πέντε ἀριθμὸν Θεοκλῆς ἐποίησε, Λακεδαιμόνιος μὲν καὶ οὗτος, πατρὸς Ἡγύλου, φοιτῆσαι δὲ καὶ αὐτὸς παρὰ Σκύλλιν καὶ Δίποινον λέγεται. τὴν δὲ Ἀθηνᾶν κράνος ἐπικειμένην καὶ δόρυ καὶ ἀσπίδα ἔχουσαν Λακεδαιμονίου λέγουσιν ἔργον εἶναι Μέδοντος , τοῦτον δὲ ἀδελφόν τε εἶναι Δορυκλείδου καὶ παρὰ ἀνδράσι διδαχθῆναι τοῖς αὐτοῖς.
The Hesperides, five in number, were made by Theocles, who was also a Lacedaemonian, son of Hegylus, and he himself is said to have studied under Scyllis and Dipoenus. The statue of Athena, depicted with a helmet on her head and holding a spear and shield, is said to be the work of Medon of Lacedaemon; Medon was the brother of Dorycleidas and trained under the same masters.