Catophragminae is a subfamily of acorn barnacles. This subfamily includes the genera Catophragmus Sowerby, 1826, and Catolasmus Ross & Newman, 2001. Species included all have a calcareous basis, carinate imbricating plates, and with long multi-segmented caudal appendage.Originally, Utinomi established Catophragminae as a subfamily of the Chthamalidae to include those genera with imbricating plate whorls.