The guardian or protector of the law of hospitality. We find the title of dii hospitales as applied to a distinct class of gods, though their names are not mentioned. (Tacit. Ann. xv. 52; Liv. xxxix. 51; Ov. Met. v. 45.) But the great protector of hospitality was Jupiter, at Rome called Jupiter hospitalis, and by the Greeks Zeus Xenius. (Serv. ad Aen. i. 140; Cic. ad Q. frat. ii. 12; Horn. Od. xiv. 389.)