110 ENTOMOLOGICAL SOCIETY OF ONTARIO. 



Mr. Smith then read a paper on the San Jose scale in New Jersey. He stated that 

 4he scale had lirst come to him from a nursery in the state in March, 1892, but had not 

 been recognized and he did not become aware of the true nature of* the insect until he 

 received the spacial circular sent out by the United States Department of Agriculture 

 early in 1894. He described his work iu connection with the stamping out of the scale, 

 and particularly the active and energetic steps taken by the owners of the infested 

 nurseries, from which the scale had been exterminated on young stock. He reported 

 sending out letters to all persons who had obtained stock from the nurseries in question, 

 enclosing the circular from the Department of Agriculture referred co, and the examina- 

 tion of nearly 100 orchards in person. As a result of his observations and woi-k, he felt 

 confident that the scale would ultimately be completely stamped out. -The introduction 

 of the scale was shown to have been either in 18SG or 1SS7, on some plum stock claimed 

 to be curculio-proof, obtained from the San Jose region in California. Other fruit trees 

 imported from California were also shown to be very likely infested. He gave some 

 facts in regard to the trees and varieties which are most liable to be infested, also some 

 notes on rem'^dies. 



In the discussion of these two papers Dr. Lintuer considered the possibility of the 

 ■introduction of the scale on fruit from California and concluded that the likelihood of the 

 3cale, so introduced, obtaining a foothold, was very slight. 



Mr. Marlatt thought there was danger in placing too much confidence in the work or 

 the statements of nurserymen as to the completeness of the eradication of the scale, point- 

 ing out the great ditiicuity of thorough extermination and the ease with which a random 

 sale here and there could be overlooked. Mr. Banks referred to the publication in a New 

 York paper of occurrences of the scale in two or three localities in New York, accom- 

 panied with the report of the adoption of active measures to stamj) it out in each instance. 



AFTERNOON SESSION— AUGUST I'mx, 189i. 



In continuation of the discussion of the morning session, Mr. Smith exhibited speci- 

 mens of California pears, obtained in Brooklyn which were covered with the Sau Jose 

 scale in all stages of development. 



Mr. Lintner exhibited an apple coming from Ottawa, Canada, handed to bim by Mr. 

 ■Saunders which was covered with the .=cales of Myfila.'<pi>! pomorian. (Fig. 51.) 



Mr. Davis read a paper on mealy bugs and other lice. He gave a careful resume of 

 the life history of the cooimon mealy bug (Dacti/lopijs d-'dructor) with detailed descrip- 

 tions of the different stages, also some notes on D. lonfjifilis. He also described a coccus 

 which he found on roots of clover, giving a general account of the habits and careful 

 descriptions of the species. He also referred to Kriococcus azaleie and other scale 

 injects. 



The paper was discussed by Messrs. Sirrine, Ashmead and Howard. Mr. Sirrine thought 

 Mr. Davis's clover coccus was the sariie as the one found by Professor Forbes on white clover, 

 and named by him Coccus trifolii, Mr. Ashmead coinciding in this view, and Mr. Howard 

 stating that the Eriococcvs azalece. was certainly not an introduced species from Belgium, 

 as suggested by the author, since the specie.s is not known in Europe, and Professor Corn- 

 stock has found it on wild plants near Ithaca, indicaliog that it is undoubtedly a native 

 species. He said also that the two old species of Dactylopius referred to by the author 

 had been shown by Berlese to be synonymous with European species, and that their life 

 histories had been worked out by this author in great detail. 



Mr. Marlatt read a paper on the Pear-tree Psylla in Maryland, in which he described 

 the sudden occurrence of this northern pear pest in two orchards on the eastern shore of 

 Maryland, in very destructive numbers. The introduction of the species was shown to 

 have been upon nursery stock from infested regions in New York, and the author was 

 confident that the injury, while excessively severe for the moment, would not be of long 

 duration, judging from the past history of the insect. A brief review of the life history 

 was given, with some notes on the natural enemies, notably a species of lace-wing fly, 



