JOURNAL OF PROCEEDINGS. 
XXI 
A Memoir containing Descriptions of some New Species of Ex- 
otic Insects, by J. O. Westwood, was read. 
September 5th, 183(3. 
J. F. Stephens, Esq. in the Chair. 
Donations. 
No. 8J of Illustrations of British Entomology. By J. F. Ste- 
phens, Esq., the Author thereof. 
Descriptions of Two New American Species of Hydrachna. By 
Messrs. Dana and Whelpley, the Authors thereof. 
The Athenaeum for July and August, 1836. By the Editor. 
G. Jarman, Esq. of 21, Upper Berkely Street, and J. Bagster, 
Esq. of Paternoster Row, were elected Ordinary Members of the 
Society. 
Memoirs, Exhibitions, &c. 
Mr. Anderson exhibited specimens of Trichius nobilis, whereof 
nearly fifty were found in the perfect state, and some in the act of 
copulation, amongst some vegetable mould in a codling-apple tree 
in the garden of Dr. Dowler, of Richmond, by whom specimens 
were presented to the Society. 
Mr. Ashton exhibited two remarkable varieties of Argynnis Pa- 
pilla found in Kent by Mr. C. Griesbaclq the ground colour of the 
wings on the upper side being very dark greenish brown with the 
ordinary black spots. Mr. Stephens stated that there was a similar 
variety in the Collection of the British Museum. 
Mr. Shuckard exhibited a specimen of Philanthus androgymis re- 
cently captured in Epping Forest. 
Mr. Westwood noticed the great injury caused in the market- 
gardens to the west of London at the present time by a species of 
Aphis covered with a purple powder, which infests and prevents 
the growth of the cabbage, cauliflowers, &c. It had not been 
before observed by the gardeners who had directed his attention 
to it, nor by the Covent Garden salesmen, by whom it was termed 
a new kind of blight. He had suggested the application of lime 
and of tobacco water, and Mr. Sells considered that both of these 
materials united would be still more efficacious. 
