526 



more popular. The folly of adopting spray calendars drawn up for 

 use in other locahties is pointed out ; local conditions should be studied 

 and the most suitable spraying system should then be developed, 

 since insects and diseases vary with the season and the locality. 



McLaine (L. S.). The Present Situation of the Brown-tail Moth in 

 Eastern Canada. — 11th A^m. Bept. Quebec Soc. Prot. Plants jrom 

 Insects and Funguos Diseases, 191S-1919 ; Quebec, 1919, pp. 29-32, 

 4 figs. [Received 14th October 1919.] 



While the province of Quebec has not yet been invaded by the 

 brown-tail moth [Nygmia phaeorrhoea, Don.], it is necessary to scout 

 and inspect the localities in close proximity to infested areas, the 

 insect being in some case no more than 20 miles from Quebec. An 

 open country such as Quebec, which contains many favourite food- 

 plants of this moth, such as cultivated and wild apple, wild cherry, 

 thorns and Amelanchier, would offer every encouragement to its spread. 



In New Brunswick, no nests of N . phaeorrhoea were discovered in 

 1918-1919, this being the first time the province has been free from the 

 pest since 1910. The outbreaks are, however, more or less epidemic 

 in character and, under favourable meteorological conditions, are 

 likely to recur. Nests undoubtedly remain undiscovered under the 

 snow throughout the winter, the mortality in these being very low, 

 and these are responsible for maintaining an infestation which other- 

 wise would be exterminated. 



In Nova Scotia, the pest was already established and spreading 

 before the Canadian Government took over the control work. The 

 climate is mild and favourable, and food-plants are much more 

 abundant, with the result that three examinations are necessary in 

 some localities, while in New Brunswick only one is made. In two 

 localities where thorn was heavily infested, hand-picking Avas 

 impracticable ; these areas were sprayed with oil and burned over. 

 The results were excellent in both cases. Although there has been a. 

 \ gradual reduction in the number of nests collected in Nova Scotia 



-^ during the past few years, the brown-tail moth is still breeding 



extensively, and vigorous campaigns are necessary to keep it in check. 



The work of rearing parasites at Massachusetts has continued for 

 four years, over 100,000 parasites being imported into Canada. The 

 Braconid, Apanteles lacteicolor, Vier., has been recovered in New 

 Brunswick and Nova Scotia. The Tachinid, Co)npsilura eoncinnata, 

 Meig., has been liberated in Quebec, New Brunswick and Nova Scotia, 

 where its hosts are Hemerocampa leucostigma, Vanessa {Euvanessa) 

 antiopa, Datana minisira and Pieris [Pontia) rapae. The predaceous 

 beetle, Calosoma sycophanta, has also been liberated in Quebec, New 

 Brunswick, and Nova Scotia. 



HuTCHiNGS (C. B.). The Imported Leaf Miner. — 11th Ann. Repf. 

 Quebec Soc. Prot. Plants Jrom Insects and Fungous Diseases, 

 1918-1919; Quebec, 1919. pp. 35-37, 6 figs. [Received 14th 

 October 1919.] 



Kaliosysphinga dohrni, Tischb. (alder leaf-miner) has been causing 

 severe damage at the experiment farm at Ottawa to a fine collection 

 of alder trees, the leaves of which are disfigured by large brown 



