Vol. 1. [1906] Protozoa / by Marcus Hartog ; Porifera (sponges) / by Igerna B.J. Sollas ; Coelenterata & Ctenophora / by S.J. Hickson ; Echinodermata / by E.W. MacBride -- Vol. 2. [1896] Flatworms and Mesozoa / by F.W. Gamble ; Nemertines / by L. Sheldon ; Thread-worms and Sagitta / by A.E. Shipley ; Rotifers / by Marcus Hartog ; Polychaet worms / by W. Blaxland Benham ; Earthworms and leeches / by F.E. Beddard ; Gephyrea and Phoronis / by A.E. Shipley ; Polyzoa / by S.F. Harmer -- Vol. 3. [1895] Molluscs / by A. H. Cooke ; Brachiopods (recent) / by A.E. Shipley ; Brachiopods (fossil) / by F.R.C. Reed -- Vol. 4. [1909] Crustacea / by Geoffrey Smith and W.F.R. Weldon ; Trilobites / by Henry Woods ; Introduction to Arachnida, and king-crabs / by A.E. Shipley ; Eurypterida / by Henry Woods ; Scorpions, spiders, mites, ticks, etc. / by Cecil Warburton ; Tardigrada (water-bears) / by A.E. Shipley ; Pentastomida / by A.E. Shipley ; Pycnogonida / by D'Arcy W. Thompson -- Vol. 5. [1901] Peripatus / by Adam Sedgwick ; Myriapods / by F.G. Sinclair ; Insects (pt. 1) / by David Sharp -- Vol. 6. [1901] Insects (pt. 2) / by David Sharp -- Vol. 7. [1901] Balanoglossus, etc. [Hemichordata] / by S.F. Harmer ; Ascidians and Amphioxus / by W.A. Herdman ; Fishes (exclusive of the systematic account of Teleostei) / by T.W. Bridge ; Fishes (systematic account of Teleostei) / by G.A. Boulenger -- Vol. 8. [1901] Amphibia and reptiles / by Hans Gadow -- Vol. 9. [1899] Birds / by A. H. Evans -- Vol. 10. [1902] Mammalia / by Frank Evers Beddard 10 52