Report on the Anomura collected by H.M.S. Challenger during the years 1873-1876 / by J. R. Henderson -- Report on the anatomy of the Deep-Sea Mollusca collected by H.M.S. Challenger during the years 1873-1876 / by Paul Pelseneer -- Report on Phoronis Buskki n.s.p. dredged during the voyage of H.M.S. Challenger 1873-1876 /W. C. M'Intosh --Report on the Tunicata collected by HMS Challenger during the years 1873-1876. Part III / by W. A Herdman