11 



PEA BUGS. 



Mr. Weld also inquired as to the experience of those present as to the ravages of 

 this pest during the year. 



Mr. Arnold said that the Pea Bug had committed more damage this year in his 

 neighbourhood than ever before. Some friend had recommended him to enclose a piece 

 of camphor in the bags of seed peas with a view of destroying the insect ; this he liad 

 tried, and found useless. Mr. Gott, of Arkona, had not found the beetles so plentiful 

 this year as usual. The subject was discussed at some length, and the general opinion 

 expressed that the most feasible remedy was to cease growing peas for a time in any dis- 

 trict where the insect had proved seriously destructive, and thus starve them out. 



THE MAPLE TREE BORER. 



Prof. Bell remarked that he had found this borer, Clytus speciosus, not nearly sa 

 common as formerly. Mr. Saunders said that he believed it to be increasing in the neifjh- 

 bourhood of London, and that some of the street trees had been seriously injured by it ; 

 he also referred to the depredations of another maple borer, Aegeria acerni, a small 

 moth whose larva burrows under the bark of the Red Maple, Ace7^ ruhrum, and in season 

 was quite common on the trunks of the maple trees on our streets. Mr. Reed also reported 

 the maples round his house being much infested by this pest, the empty cocoons being 

 found protruding from the trunks of the trees in quantities during the summer. 



A discussion then ensued on the probabilities of new insect pests being introduced 

 from abroad by the importation of grains, seeds and trees, in which several of the members 

 took part. Mr. Weld urged that the Society should call the attention of the Government 

 to the necessity of taking every possible precaution to prevent the introduction of sucli 

 insects. The President remarked that in his official capacity he had, through the Provin- 

 cial Agricultural Association, already brought this matter before the Government, and that 

 some steps in this direction had been taken. 



The meeting then assumed an informal character, and the members were shown by 

 Messrs. Saunders, Denton, and Reed many of the more interesting . specimens in the 

 Society's large collections, and also exhibited microscopic specimens illustrating the 

 structure of insects. The valuable library of the Society was also examined by the mem- 

 bers, and added to the interest of the gathering. 



After enjoying a very pleasant and profitable evening, the meeting adjourned. 



MEETING OF THE SUB SECTION OP ENTOMOLOGY OF THE AMERICAN 

 ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE. 



The meeting of the American Association for the Advancement of Science was held 

 at Cincinnati, Ohio, commencing at 10 o'clock a.m. on Wednesday, the 17th of August, 

 1881. At the conclusion of the opening exercises the several Sections proceeded to 

 organize, when the Sub-section of Entomology was called to order by the President, Rl'V. 

 J. G. Morris. A large number of Entomologists were present, among others C. V. Riley,, 

 Washington j Cyrus Thomas, Carbondale, 111. ; Wm. H. Edwards, Coalburgh, W. Va. ; 

 J. A. Lintner, Albany, N. Y. ; Rev. J. G. Morris, Baltimore, Md. ; Wm. Saunders, Lon- 

 don, Ontario ; E. W. Claypole, Yellow Springs, Ohio ; Miss M. W. Brooks, Salem, Mass. ; 

 B. Pickman Mann, Washington ; C. D. Zimmermann, Buffalo, N.Y. ; A. J. Cook, Lansing,. 

 Mich. ; J. D. Putnam, Davenport, Iowa ; S. H. Peabody, Champaign, 111. j Y. T. Cham- 

 bers, Covington, Ky. ; and Chas. Drury, Avondale, Ohio. 



On Thursday, August 18th, the Sul3-section of Entomology met at 2.30 p.m. 



The first paper read was by Prof. C. Y. Riley, on Retarded Development in Insects^ 

 In this paper the author recorded several interesting cases of retarded development in 

 insects, whether as summer coma, or dormancy of certain portions of a given brood of 

 caterpillars, the belated issuing of certain imagines from the pupa, or the deferred hatch- 

 ing of eggs. One of the most remarkable cases of this last to which he called attention 



