Lewis & Short

2. Macae, ārum, m., = οἱ Μάκαι (Herod. 4, 175), a people of Africa in the regio Syrtica, Mela, 3, 8, 6; Plin. 5, 5, 5, § 34; Sil. 3, 275; 15, 670.
Sing.: Maces, Sil. 9, 222.
Acc. Macen, Sil. 2, 60.