1908 ENTOMOLOGICAL SOCIETY. 187 



some parts of Quebec, but is not troublesome at Cowansville or in the 

 eastern part of the province. It is very abundant at Cbateauguay and La 

 Trappe. The Oyster-shell Bark-louse is also one of our most widespread 

 insects in Quebec, and is reported as being very abundant at Cowansville, 

 but at present it is not injurious at La Trappe to any extent. The Canker- 

 worm is not troublesome. The Fall web-worm is very prevalent throughout 

 the province this present autumn. 



Insects Affecting Small Fruits. The Currant-worm is common 

 everywhere, and is very injurious when left uncontrolled. At the Agri- 

 cultural Institute, at La Trappe, the insect was successfully controlled by 

 Nico Soap. The Raspberry Cane-borer was reported as doing little or no 

 harm, but has been observed as being abundant on the wild canes. 



Mites on Raspherrtes. In 1907 the raspberry plantation at Macdonald 

 College was badly infested and injured by mites, which have the habit of 

 clustering on the under surface of the leaves. They were again observed in 

 •Tune, 1908, and spraying operations were begun to determine the effect of 

 various solutions in controlling the pests. These operations were in charge 

 of Mr. J. M. Swaine. Ten plants were selected of about the same degree 

 of infestation. The following substances were used : 



Nico-soap ; Fair results. 



Lime-sulphur (5 oz. lime, 21-23 S, 2) ^ gal HjO.. Effective but killed leaves. 



Lead Arsenate (1 to 10) Not effective. 



Bordeaux ,,,,,,,,,,.. Not effective. 



y2 (1-10) Effective. 



Whale Oil Soap, 3 oz., 10 gals Fair results. 



Tobacco decoction Fair results. 



Kerosene Emulsion (1 to 9) Most effective. 



Water Effective. 



Later, the whole patch, excepting three rows, was sprayed with whale 

 oil soap, tobacco decoction and V2. They all killed the mites, where they 

 were very carefully applied, but on the whole about half of the mites were 

 killed. Tobacco was as effective as any of the substances tried. Probably 

 these mites can be better controlled by winter sprays^ and experiments will 

 be conducted this coming winter to test the effectiveness of winter sprays. 

 The White Marked Tussock Moth. Mr. Swaine reports that the Tus- 

 sock Moth was not nearly so abundant on the shade trees of Montreal as it 

 was in 1907. Fully 90 per cent, of the larvae that were collected at random 

 from trees were found infested with parasites. Mr. Swaine bred 16 species 

 of parasites. 



Insects of the Eastern Townships. According to Mr. Douglas Weir 

 Grass-hoppers were the cause of some damage to the grain crops in the 

 Eastern Townships, and the Potato Flea Beetle was observed in somewhat 

 greater numbers than usual, assisting the Colorado Beetle in the devasta- 

 tion of the potato crop. 



In the orchards the Tent Caterpillar and plant lice were perhaps most 

 evident, while in the forests and wood lots a species of Saw-fly (Nematus 

 Sp.) defoliated many fine groves of birch (mostly Betula papyri f era and B. 

 populi/olia). 



Insects Observed at the Port of Montreal. Mr. Merritt Baker, 

 Fruit Division, Ottawa, who is in charge of the inspection of apples at the 

 port of Montreal in connection with the inforcement of the Fruit Marks 

 Act informs me that the three most important insects which he has observed 

 in the course of his inspection are the Codling Moth, the Plum Maggot 

 and the Lesser Apple-Worm. The apples which he examined came mostly 

 from the Lake Ontario District, Ontario. The Lesser Apple Worm (Enar- 

 10 EN. 



