( xxii ) 



fceding between united birch leaves at Cliiselhurst, Sept., 

 1889 ; and Scanlia picarella, bred from fungus collected m 

 Durham in May, 1890. 



Mr. S. Stevens, in speaking of a tour which he had lately 

 made in Devonshire, remarked on the extreme scarcity of 

 insects on the coast of that county as compared with the 

 coasts of Kent and Sussex ; there were very few larvie, and 

 the vegetation was very luxuriant and very little eaten ; he 

 thought it possible that the reason of the scarcity was the 

 heavy rainfall of South Devon, which washed off and 

 destroyed the young larvffi. 



Mr. Barrett said that his experience had been the. same, 

 and that he attributed the scarcity of larvfe to the violence 

 of the winds, which beat the insects from the trees. 



Mr. F. H. Blandford remarked that he had found Coleoptera 

 abundant on the Braunton Burrows, near Barnstaple, but 

 very scarce in other localities. Mr. Mason and others took 

 part in the discussion which followed. 



Mr. Stevens further said that when at Exeter he visited 

 the Museum, and was pleased to see the original specimen of 

 Plusia ni in the late Mr. H. Dorville's collection, taken at 

 Alphington, near Exeter, in August, 18C8, and a specimen of 

 Callimorplia hera, taken also at Alphington in August, 1871, 

 which is about six miles from the locality in which the latter 

 insect is now said to occur ; both the specimens are in fine 

 condition. 



Papers read. 



Prof. Westwood read a paper on a species of Aphis, received 

 from Mr. E. Ernest Green, of Ceylon, affecting the bread- 

 fruit tree, which he had named Siphonuphora artocarpi; at 

 the conclusion of his paper he alluded to the use of Paris- 

 green as a destructive agent for insects. 



Mr. Blandford then made some remarks as to the use of 

 London-purple (another arsenic compound) as an insecticide 

 in the place of Paris-green ; he stated that the compound 

 was a waste product and one-tenth the cost of Paris-green, 

 and further that it was more soluble and more easily applied ; 

 he was also of opinion that arsenic compounds do not greatly 



