Fusus
in zoölogy a genus of Gasteropoda, family Muricidæ. Shell, fusiform ; canal, long, straight; operculum, ovate curved; nucleus, apicol. Known recent species, 184; fossil, 320; these latter, latter , perhaps from the Bath Oölite, or at least the Gault, to the Eocene. Fusus or Chrysodomus antiquus is the buckie and roaring buckie of Scotland. F. colosseus and F. proboscidalis are of large size.