1. A son of Pheres, and grandson of Jason and Medeia. He was the father of Ilus and Ephyra, and skilled in the art of preparing poison. (Hom. Od. i. 260; Eustath. ad Hom. p. 1416.)

2. A son of Jason and Medeia, is also called Macareus or Mormorus (Hygin. Fab. 239; Tzetz. ad Lyc. 175); he was murdered, together with his brother Pheres, by his mother at Corinth. (Apollod. i. 9. § 28; Hygin. Fab. 25; Diod. iv. 54.) According to others he was stoned to death by the Corinthians (Paus. ii. 3. § 6; Schol. ad Eurip. Med. 10), or he was killed during the chase by a lioness. (Paus. ii. 3. § 7.)

3. A centaur, Mermerus, is mentioned by Ovid. (Met. xii. 305.)