Lewis & Short

Murcĭus (Murtĭus), a, um, adj. [Murcia, Murtia], sacred to or called after Venus Murcia: Murciae or Murtiae metae (sc. in Circo)), so named because near the chapel of the goddess Murcia, App. M. 6, p. 176, 13: Vallis, the valley in which her temple stood, Claud. Laud. Stil. 2, 404; Serv. Verg. A. 8, 636.