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the food-plant of the butterfly Mylothris ayathina, and curiously 

 enough the larva? of this in habits exactly resemble those of 

 Musfjravia leighi, congregating together upon the trunks of 

 the trees by day and feeding by night." 



Mr. Stanley W, Kemp exhibited two additions to the 

 British list of Coleoptera, Bemhidlum argenteolum, from 

 Lough Neagh, Armagh, and Lx:nQs'enus complanatus from 

 the neighbourhood of Dublin, taken in June 1902. 



Mr. W. J. Kaye exhibited examples of Heliconius lindigil. 

 Heliconius antiochus, and Morpho acMlles from British Guiana 

 with notches taken out of the hind-wings, presumably by 

 birds, to illustrate tliat these distasteful or warning-coloured 

 species are subject to attack, thus helping to show that ex- 

 perimental tasting as propounded by the Miillerian theory 

 of mimicry does exist and go on. 



Papers, etc. 



Professor L. C. Miall, F.R.S., communicated a Paper by 

 Mr. T. H. Taylor, M. A., entitled " The Tracheal System of 

 Simulium." 



Professor Auguste Forel, M.D., communicated a Paper 

 entitled " Descriptions of some Ants from the Rocky Moun- 

 tains of Canada (Alberta and British Columbia) collected 

 by Edward Whymper." 



Dr. T. A. Chapman, M.D., F.Z.S., read a Paper entitled 

 " On Heterogynis 2Ja7-adoxa." 



October 15th, 1902. 



Professor Edward B. Poulton, M.A., D.Sc, F.R.S., Vice- 

 President, in the Chair. 



Exhibitions. 

 Mr. A. J. Chitty showed an entirely black specimen of 

 Metoecus ])aradoxus as tending to disprove the mimicry suggested 

 by him at the meeting on the 1st Octobei-. Dr. Chapman said 

 that in his experience one out of every six specimens of this 

 species was black. Mr. Donisthorpe stated that out of about 

 one hundred specimens he had never caught or bred a black 

 Metoecus. 



