Intro: "I will here give the diagnoses of some new species belonging to Hermellidae and Sabellidae. Two of the species have been found in the collections of the Swedish Antarctic Expedition 1901-1903 and are preserved in the Swedish State Museum, most, however, are from the large and excellent collections made by Dr. S. Bock during his journey to Japan and the Bonin Islands in 1914, which collections are preserved in the Zoological Institution of Uppsala."