(Θελξίων), in conjunction with Telchin, murdered Apis, when he attempted to subjugate Peloponnesus; but they themselves were slain in return by Argus Panoptes. (Apollod. 2.1.1, &c.) Pausanias ( 2.5.5) calls him a son of Apis and the father of Aegyrus.
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890