(Ἑρμανοῦβις), a son of Osiris and Nephthys, was represented as a human being with a dog's head, and regarded as the symbol of the Egyptian priesthood, engaged in the investigation of truth. (Plut. de Is. et Os. 61; Diod. 1.18, 87.)
[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