ξένος ὢν ἀκολούθει τοῖς ἐπιχωρίοις νόμοις → as a foreigner, follow the laws of that country | when in Rome, do as the Romans do
καταπόντισις: -εως, ἡ, καταβύθισις εἰς τὴν θάλασσαν, πνίξιμον ἐντὸς αὐτῆς, Ἰω. Κλίμ. 334. 23.