Lewis & Short

aegŏcĕrōs, ōtis, m., = αἰγόκερως, the wild goat (in pure Lat. capricornus), used only poet. as a sign of the zodiac, Lucr. 5, 615: humidus, Luc. 9, 536.
Note: Also aegŏcĕrŏs, i, m., sedem aegoceri, Caes. Germ. Arat. 213: Aegoceron Cancrumque tenet. Luc. 10, 213.