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tives of 2" to ^" were required, and asked whether any Fellow 

 had spare objectives which he would present. 



Papers. 



The following papers were read : — 



" On new and little-known Lagriidae from S. America," by 

 G. C. Champion, A.L.S., F.Z.S., F.E.S. 



" Additions to the Knowledge of the Cetoniidae of British 

 India," by 0. E. Janson, F.E.S. 



" The Condition of the Scales in leaden Males of Agriades 

 thetis and other Lycaenids," by E. A. Cockayne, M.A., M.D., 

 F.E.S. 



" Some Notes on Butterfly I\Iigrations in British Guiana," 

 by C. B. Williams, M.A., F.E.S. 



Commenting on Dr. Cockayne's paper Mr. Bethune-Baker 

 observed that the scales in these specimens were curved 

 triangularly and were ver)^ thin instead of fairly solid. Mr. 

 Newman said that such specimens needed to be set at once, 

 if killed with cyanide and relaxed they began to stain in less 

 than six hours, and that this was the case even if kept in a 

 dry cyanide bottle. 



Prof. Poulton, Rev. G. Wheeler, Comm. Walker and 

 Mr. Bethune-Baker commented on Mr. Williams' paper. 



Wednesday, March 21st, 1917. 

 Dr. C. J. Gahan, M.A., D.Sc, President, in the Chair. 



Election of Fellows. 



Messrs. David Hunter, M.A., M.B., The Coppice, Notting- 

 ham; Nicholas J. Kusnezov, The Imperial Academy of 

 Sciences, Petrograd, and Percy A. H. Muschamp, Charter- 

 house School, Godalming, Surrey, were elected Fellows of the 



Society. 



Exhibitions. 



A supposed Hybrid Butterfly. — Dr. T. A. Chapman 

 exhibited a supposed hybrid between Callophrys avis and 



