VOLUME I.

Protozoa, Marcus Hartog, M.A., Sc.D., Trinity College (Professor of Natural History in the Queen's College, Cork); Sponges, W. J. Sollas, Sc.D., F.R.S., St. John's College (Professor of Geology in the University of Oxford); Jellyfish, Sea-Anemones, etc., S. J. Hickson, M.A., F.R.S., Downing College (Beyer Professor of Zoology in the Owens College, Manchester); Star-fish, Sea-Urchins, etc., E. W. MacBride, M.A., St. John's College (Professor of Zoology, McGill University, Montreal).

VOLUME IV.

Spiders, Mites, etc., C. Warburton, M.A., Christ's College (Zoologist to the Royal Agricultural Society); Scorpions, Trilobites, etc., M. Laurie, B.A., King's College, D.Sc. (Edinb.), (Professor of Zoology in St. Mungo's College, Glasgow); Pycnogonids, etc., D'Arcy W. Thompson, C.B., M.A., Trinity College (Professor of Zoology in University College, Dundee); Linguatulida and Tardigrada, A. E. Shipley, M.A., F.R.S.; Crustacea, W. F. R. Weldon, M.A., F.R.S., St. John's College (Linacre Professor of Comparative Anatomy in the University of Oxford).

[In the Press.

MACMILLAN AND CO., Ltd., LONDON.

NOTES

[1]

Bateson, Quart. J. Micr. Sci. xxv. Suppl. 1885, p. 111.