1.: Introduction and Protozoa / S. J. Hickson, J. B. Farmer 2.: The Porifera and Coelentera / by E. A. Minchin, G. Herbert Fowler and Gilbert C. Bourne 3.: The Echinoderma / by F. A. Bather ; assisted by J. W. Gregory and E. S. Goodrich 4.: The Platyhelmia, Mesozoa and Nemertini / by W. Blaxland Benham 5.: Mollusca / by Paul Pelseneer 7.: Appendiculata / W. T. Calman 9.: Vertebrata Craniata /E.S. Goodrich |