(adjective) : Ātreus (dissyl.; cf. Quint. 1, 5, 24), ei, m., = Ἀτρεύς.
* A son of Pelops (hence, Pelopeïus, Ov. H. 8, 27) and Hippodamia, brother of Thyestes, father of Agamemnon and Menelaus, king of Argos and Mycenoe, Ov. M. 15, 855.—Atrea (acc.), Ov. Am. 3, 12, 39.—Atreu (voc.), Sen. Thyest. 486; 513.
* Derivv.
* Ātrēĭus or Ātrēus, a, um, , of or belonging to Atreus, poet. for Argive, Stat. Th. 8, 743; cf. Pompei. Gram. p. 113 Lind.
* Ātrīdes (Atridă in nom., Prop. 2, 14, 1), ae, m., a male descendant of Atreus; Atrides, absol. usu. for Agamemnon; in plur.: Atridae, the Atrides, i. e. Agamemnon and Menelaus, Plaut. Bacch. 4, 9, 1: non minor Atrides, non bello major et aevo,i. e. not Menelaus, not Agamemnon,Ov. M. 12, 623; cf. id. ib. 13, 359; 15, 162.—In dat. and abl. plur.: Atridis,Hor. S. 2, 3, 203; Ov. P. 1, 7, 32.—In acc. plur.: Atridas superbos,Hor. C. 1, 10, 13.—In sing.
* For Agamemnon, Prop. 4, 6, 23; Hor. C. 2, 4, 7; id. Ep. 1, 2, 12; id. S. 2, 3, 187; Ov. M. 13, 189; 13, 230; 13, 365; 13, 439; 13, 655 et saep.
* For Menelaus, Hor. Ep. 1, 7, 43; Ov. M. 15, 805.—Sarcastically: Atrides, of Domitian, as a haughty ruler of Rome,Juv. 4, 65.

s. TLL