πρωτοτοκεῖα
From LSJ
οὗτος μὲν ὁ πιθανώτερος τῶν λόγων εἴρηται, δεῖ δὲ καὶ τὸν ἧσσον πιθανόν, ἐπεί γε δὴ λέγεται, ῥηθῆναι → this is the most credible of the stories told; but I must relate the less credible tale also, since they tell it
English (LSJ)
A v. πρωτοτόκια.
German (Pape)
[Seite 806] τά, das Recht der Erstgeburt, LXX.