321 



Ontario Department of Agriculture, as a result of which a total of 

 about 7,690 square miles was found to be infested. The spread has 

 been more or less general from practically all points of the 1920 

 infestation, the most noticeable extension being in a northerly, north- 

 easterly and easterly direction. So far the injury in Canada has been 

 confined to maize. Details are given of the scouting work and the 

 quarantine in force against this pest. 



Maheux (G.). Report of the Provincial Entomologist.— i?^/)/. Minist. 

 Agric. [1919-20], Quebec, 1920, pp. 147-154. rReceived 18th 

 April 1922.] 



During 1919 vegetable pests included Pieris rapae (cabbage worm), 

 PJwrbia hrassicae and Leptinotarsa deccnilineata (potato beetle). 

 Epitrix cucnmeris (potato fiea-beetle) appeared in great numbers in 

 potato fields, but the damage did not extend to tomatos, as was the 

 case in 1918. The only important pest of cereals in 1920 was Melanoplus 

 atlantis. In 1919 there were fewer fruit pests. Aphis pomi caused 

 considerable injury during the greater part of the summer. Unspraved 

 orchards were attacked by Cydia {Carpocapsa) pomonella (codfing 

 moth), and in 1920 by Eucosma {Tmeiocera) ocellana (bud moth), 

 which caused great damage. There were considerable numbers of 

 Schizura concinna (red-humped caterpillar), which defohated many 

 apple trees, but only a few of Hemerocampa leucostigma (white-marked 

 caterpillar) and Datana ministra (yellow-neck caterpillar). The 

 Limacodid moth, Phobetron pithecium, which has been rarely seen for 

 several years, locally caused considerable damage. 



Pests of ornamental trees include Cryptorrhynchus lapathi (poplar 

 and willow weevil), which is spreading rapidly, and Agribis anxius 

 (white birch borer), both of which are probably introduced on trees 

 bought in neighbouring provinces. 



Sen (P. C). The Large Brown Cricket, Brachytrypes portentosus, 

 Lichet. — Bengal Agric. Jl., Dacca, i, no. 4. December 1921, pp. 

 111-112, 1 plate. [Received 18th April 1922.] 



Brachytrypes portentosus is sometimes very injurious to jute, chilHes, 

 cotton, etc., feeding at night on the young plants. Towards the end 

 of the rainy season the female, lays 40-50 eggs in a mass in the burrow ; 

 these hatch in September and the ^'oung make new burrows. Their 

 presence is detected by accumulations of fresh loosened earth near the 

 holes. They gradually become \\inged. The hfe-cycle occupies one 

 year. Remedial measures include destroying the crickets after driving 

 them from their burrows by making clean conical holes in the openings 

 and pouring in a mixture of 1 pint kerosene to 80 of water. If possible 

 the fields should be irrigated, as this drives the crickets out of 

 their burrows, and they are then destroyed by birds and other 

 enemies. 



Departmental Activities : Entomology.—//. Dept. Agric, Union 

 S. Africa, Pretoria, iv, no. 3, March 1922, pp. 206-210. 



The cultivation of Citrus in parts of the Transvaal is seriously 

 hampered by the presence of red scale [Chrysomphalus aurantii], 

 A co-operative society has eventually been formed for the purpose 

 of fumigation over a large area ; this, however, has been abandoned 

 for the present on account of heavy storms that have greatly damaged 



