at the same time, which showed a most remarkable variety of 

 coloration, and elicited the fact that they had been killed with lump 

 ammonia, and that some of the insects had remained in the killing 

 chamber for varying periods. As a result, I have endeavoured to 

 obtain the same coloration, in which I have been successful. The 

 original specimen exhibited is marked " A," and underneath it you 

 will see three more specimens which have been subjected to pure 

 ammonia by removing the pins and letting the insects float on the 

 ammonia without the wings coming into contact with the liquid. 



I thought that it might also be of interest to ascertain what is 

 the result of prolonged exposure to cyanide of potassium ; and now 

 show some ten specimens in exhibit marked " B," which have been 

 placed in cyanide for thirty-one days. Except where the wings 

 were pushed into the damp mixture of plaster and cyanide, there is 

 no extreme change of coloration, only a slight dimming of the 

 same." 



Mr. A. W. Mera exhibited a bred series of A. Hrticw from various 

 English and Scotch counties, those from Eastbourne being some- 

 what lighter, otherwise there were no striking aberrations, except 

 in the undersides, which showed a wide range of coloration. 



Mr. B. S. Curwen exhibited three ab. polarU from Bossekop, a 

 dark dwarf from Dover, two showing the discal spots on a cream 

 ground from Colchester ; three icJaiusa forms from Colchester and 

 Dover, one brown specimen bred from Newport, one suffused under- 

 side from Swinley Woods, etc. 



Messrs. Tonge, C. H. Williams, Barnett, and Nicholson also 

 exhibited various forms, races, and aberrations of this species. 



Mr. R. Adkin exhibited long series from many parts of Great 

 Britain and Ireland, including examples of many of the forms 

 referred to by Messrs. Turner and Sperring, and one from Coventry 

 with pale straw ground colour. He agreed in the main with the 

 latter gentleman's remarks as to the generally richer ground colour 

 of the Scotch as compared with the South English examples. 



Mr. H. B. Williams exhibited Af^lais urtica : four specimens of a 

 pale ground colour, part of a brood bred from Haslemere larvfe in 

 1915 ; four specimens with 2nd costal blotch extended to a point 

 reaching the 3rd blotch, part of a brood from Norwich bred in 

 1913 ; four specimens from Warminster, Salisbury Plain, 1917, 

 including ab. ichnnsa and a specimen with traces of a dark band 

 across the forewings involving the twin spots; ab. pan-inotata, Rayn., 

 from Finchley ; two specimens from the " Webb " coll., one having 



