51 



TUESDAY, August 5th, i i a.m. 



SECTION— EVOLUTION, BIONOMICS, AND MDIICRY. 



President : Y. Sjöstedt. 

 Vice-President : H. Skixxer. 

 Secretary : L. Doxcaster. 



The President called on E. B. Poultox to give his papar 

 entitled : 



Mr. C. a. Wiggins's and Dr. G. H. Carpenter's Researches 

 IN Mimicry in the Forest Butterflies of Uganda. 

 (No manuscript received for the Transactions, but the fol- 

 lowing abstract sent in by Prof. Poultox gives all the main 

 points. — Editors.) 



Prof. PouLTON exhibited a long series of the commonest 

 species of Planema, together with their Nymphaline, Acrœine, 

 and Papilionine mimics, collected bv Mr. C. A. Wiggins, D.P.M.O. 

 of the Uganda Protectorate, in forest-patches in the neighbour- 

 hood of Entebbe. The exhibited series formed the continuation 

 of that shown at Brussels ' and published in the Report of the First 

 International Entomological Congress (pp. 483-508). The later 

 captures, on the whole, strongly supported the conclusions that 

 had been drawn from the earlier. Together with the great 

 collection from Entebbe, Prof. Poulton exhibited Dr. G. D. H. 

 Carpenter's fine series of the same mimetic groups, so far as 

 they were represented in Damba Island and Bugalla, one of the 

 Sesse Islands, — both in the N.\\'. of the \'ictoria Nyanza. Dr. 

 Carpenter's groups formed a most interesting contrast with 

 those collected by ]Mr. Wiggins. On both islands the Planema 

 models were relatively rare, and the Nymphaline mimics of the 

 genus Pseudacrœa unusually abundant — a relationship reversed 



, 1 On Dr. C. A. Wiggins' Researches on Mimicry in the Forest Butterflies 

 of Uganda (1909). 



