=Flatworms.= By F. W. GAMBLE, M.Sc. =Nemertines.= By Miss L. SHELDON. =Threadworms, etc.= By A. E. SHIPLEY, M.A. =Rotifers.= By MARCUS HARTOG, M.A., D.Sc. =Polychaet Worms.= By W. BLAXLAND BENHAM, D.Sc. =Earth-worms and Leeches.= By F. E. BEDDARD, M.A., F.R.S. =Gephyrea, etc.= By A. E. SHIPLEY, M.A. =Polyzoa.= By S. F. HARMER, M.A.

_NATURAL SCIENCE._--“Certain to prove a most welcome addition to English zoological literature.... The whole is admirably illustrated.”