105 



evolutionary change. If records had been made even ten 

 years ago of the exact areas already affected, or of the pro- 

 portions of dark and normal forms in the affected areas, they 

 would be now of great value. The Evolution Committee 

 hoped to be able to collect some of the facts still known to 

 collectors respecting the progress of the change, and to induce 

 many to begin to record the present state of things in their 

 own districts. It was not necessary that such records should 

 be of an elaborate character, and negative statements based 

 on personal knowledge, that in a given district melanic 

 forms had not yet appeared, were of high importance. A list 

 had been drawn up of species likely to be of special interest 

 in connection with this inquiry, and schedules for recording 

 had been prepared. Mr. Bateson would be glad to send 

 these papers to an}' one who would write for them to him at 

 Grantchester, Cambridge. 



NOVEMBER 22nd, 1900. 

 Mr. W. J. Lucas, B.A., F.E.S., President, in the Chaii. 



Mr. Cane, of East Dulwich, was elected a member. 



Mr. R. Adkin exhibited six specimens of Abraxas p'os- 

 snlariata, which, he said, were the most strongly marked 

 examples bred from some two thousand larvae collected 

 from Euonyimis in the West of London. In all of the 

 specimens exhibited the black markings of the outer por- 

 tions of the fore-wings were much intensified, while in two 

 of them the whole area of the fore-wings was black, with 

 the exception of a few small, irregular white blotches and 

 faint indications of the usual yellow lines. The hind-wings 

 showed little variation from the type. 



Mr. Ashby exhibited a fine, long, and very varied series of 

 the Coleopteron, Ontlwpliagtis vacca, taken at Willesden, 

 April, 22nd, igoo. 



Mr. Turner exhibited a number of species of Lepidoptera, 

 and a few specimens of other orders, to illustrate his notes 

 on the Natural History of Dawlish. He also read a paper 

 entitled "Desultory Days at Dawlish in August, igoo " 

 (p. 21). 



