( 21 ) 



Ixiv] 



Professor Poulton said that the ample material kindly 

 sent by Mr. Wiggins had now shown beyond any doubt 

 that Pseudacraea tirikeiisis, Neave, was the female of Ps. 

 hobleyi of the same author, the two sexes being mimetic of 

 different species of Plane^na. This last point was an interest- 

 ing one, inasmuch as the sexes of the mimetic Pseudacraeas 

 usually mimic the corresponding sexes of the same species of 

 model. Here, however, the female hobleyi was a beautiful 

 mimic of the female of Planema alcinoe, while the male of 

 hobleyi did not mimic the male alcinoe but bore the closest 

 superficial resemblance to both sexes of Planema poggei. 



The speaker expressed the hope that Mr. C. A. Wiggins 

 would persist in his investigation of this deeply interesting 

 locality, and continue his kind and most efficient help to the 

 study of mimicry by forwarding the captures of single days 

 selected at intervals up to the end of next May, thus complet- 

 ing an entire year. It was to be hoped and expected that 

 more light would thus be thrown on the study of mimicry than 

 has ever yet been received from any source whatever. 



Ixvii] Wednesday, November 17th, 1909. 



Mimetic Relations of East and West African Butterflies. 

 — Mr. H. Eltringham exhibited examples of certain African 

 butterflies, and explained that when working out the mimetic 

 relations of Acraea alciojm^ Auriv., he had been struck by the 

 fact that whilst in West Africa the female of that species was 

 well known, it having in fact been described from a female, 

 all East African examples were males. He had written to 

 Dr. Jordan to ask him if he had seen any East African females, 



