( XXX ) 



Wednesday, March 21st, 1906. 



Mr. F. Mbrrifield, Prcsideut, in the Chair. 



Election of Fellovs. 

 The Kev. Geouge A. Obawshay, M.A., of "LoAvlands," 

 Leighton-Buzzard ; Mr. Heeeward Dollman, of Hove House, 

 Newton Grove, Bedford Park, W. ; Mr. Edward Dukinfield 

 Jones, of "Castro," Pveigate ; Dr, John Neville Keynes, 

 M.A., D.Sc, of G, Harvey Road, Cambridge; Mr. D. L. 

 McCarrison, Indian Police Forces, Madras Chib, Madras ; 

 and Mr. George E. Tryhane, of St. Ann's, Trinidad, B.W.I. , 

 were elected Fellows of this Society. 



Exhibits. 

 Dr. Dixey exhibited male and female examples of Pierines 

 belonging to the genus Eronia with the closely-allied genera 

 (or subgenera) Neplieronia and Leuceronia. He drew attention 

 to the great diversity of aspect that obtained between different 

 members of this group, especially the females, and showed that 

 in many instances this was due to the fact that one or both 

 sexes of the Eronia had been assimilated in aspect to a form 

 or group of forms either known or suspected to be distasteful. 

 He believed the association to be in most cases synaposematic 

 (Miillerian) rather than pseudaposematic (Batesian) ; but it 

 was perhaps possible that in Eronia leda, Avhich possessed a 

 cryptic under-side, we had a case of true mimicry. Eronia 

 cleodora, Hiibn., which was more closely related to E. leda 

 than were any of the forms shown, was not a mimic ; its sexes 

 were similar to each other, and both male and female appeared 

 to trust for protection to their cryptic under surface. The 

 same was probably the case with the female of E. leda, which 

 also seemed not to be a mimic ; but the male in this instance, 

 though to some extent cryptic beneath, was an excellent copy 

 of another Pierine, viz. Teracolus auxo, Liic, or of its northern 

 form T. incretus, Butl. On these grounds the presumption was 

 that both E. cleodora and its congener E. leda were less 

 distasteful than other members of the Eronia group, and it 



