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. (Tac. Ann. 15.52; Liv. 39.51; Ov. Met. 5.45.) But the great protector of hospitality was Jupiter, at Rome called Jupiter hospitalis, and by the Greeks Ζεὺς ξένιος. (Serv. ad Aen. 1.140; Cic. ad Q. frat. 2.12; Horn. Od. 14.389.)