In his “Fortegnelse over Norges Lepidoptera” (Christiania Videnskabs-Selskabs Forhandlinger for 1893, No. 13), Dr. W. H. Schoyen, State Entomologist of Norway, has given us a list of 1267 species of Lepidoptera that inhabit his country, tabulated to show the Provinces in which they occur, and the exact latigude over which each species is known to be distributed. The interest which this list posesses for the American entomologist is in the number of species it contains that are common to both countries.