The Association of Economic Biologists 



President 



Professor NEWSTEAD, F.R.S. 



Vice-Presidents 



Professor CARPENTER, M.R.I.A. 

 Professor STANLEY GARDINER, F.R.S. 

 Professor HICKSON, F.R.S. 

 R. STEWART MacDOUGALL, D.Sc. 

 A. E. SHIPLEY, Sc.D., F.R.S. 



Council 



Prof. B. T. P. BARKER A. D. IMMS, D.Sc. 



S. E. CHANDLER, D.Sc. Prof. W. MAXWELL LEFROY 



F. J. CHITTENDEN G. A. K. MARSHALL, D.Sc. 



A. D. COTTON Prof. H. G. PLIMMER, F.R.S. 



E. E. GREEN A. G. L. ROGERS 



Prof. P. GROOM, D.Sc. 



Hon. Treasurer 



J. C. F. FRYER, Esq., 



Craven House, 



Northumberland Avenue 



Hon. Secretary 



S. A. NEAVE, Esq., 



89, Queen's Gate, S.W. 7 



CONTENTS OF Vol. IV, No. 3 



FAOX 



1. On the Larval and Pupal Stages of Bibio Johannis L. By Hubert 



M. Morris, M.Sc. (Manch.). (With Plate II and 12 Text-Figures.) 91 



2. Two Experiments in House Fumigation. By H. Maxwell-Lefroy 115 



3. The Locust in Cyprus. By W. P. Delane Steering, F.G.S. . 119 



4. Mussel Beds; their Productivity and Maintenance. By Frank S. 



Wright 123 



