Busk, G. 1886. Report on the Polyzoa collected by H.M.S. Challenger during the years 1873-76. Part II. - The Cyclostomata, Ctenostomata, and Pedicellinea. - pp. i-viii (= 1-8), 1-47, Pl. I-X (= 1-10), in: Thomson, C. W. & Murray, J. ...