By H. A. Baylis, M.A., D.Sc., Assistant Keeper, Department of Zoology, British Museum (Natural History). Pp. xi and 276. An index of Parasites and a General Index. 200 text figures. Wm. Wood and Company, New York
By Robert Hegner, Ph.D., Francis M. Root, Ph.D., and Donald L. Augustine, Sc.D. The Century Biological Series. Pp. I–XXI. 1–731. Illustrated. Octavo. The Century Company. New York and London. 1929
By John Gordon Thomson, M.A., M.D., Ch.B., and Andrew Robertson, M.B., Ch.B. Royal Octavo, Pp. I–XIII. 1–376. Illustrated. 1929. Wm. Wood and Company, New York