r 208 



The reason that froghopper infestation follows cleaning and weeding, 

 is that the froghoppers are driven from the wild plants on to the canes. 

 Whenever adults are seen to be numerous around a field it is better to 

 wait until they die off before cleaning up ; this would give them time 

 to oviposit, and the weeding and trashing would be effective in 

 destroying eggs and nymphs. If, however, cane-trash is merely heaped 

 up and left in the field, the incubation of the eggs is assured, if not 

 actually hastened. It is important to note the appearance of adults 

 on the paths and around the fields when brushing and weeding opera- 

 tions are contemplated ; in certain conditions, the froghoppers prefer 

 paths and drains, which are two of the principal sources from which 

 fields become infested, and the w^eeding, not brushing, of these is 

 recommended at the proper time [see this Revieiv, Ser. A, ii, p. 96]. 



The method of transporting adults adopted, is given, as well as 

 a few notes on Syrphid breeding ; the distribution of an additional 

 500 eggs is recorded. 



Hewitt (C. G.). Instructions to Importers of Trees, Plants and other 

 Nursery Stock into Canada. — Domin. Canada, Dept. Agric, Entom. 

 Branch, Ottawa, Circular no. 4, August 1914, 11 pp. [Received 

 2nd November 1914.] 



The authorship of this paper, of which an abstract has already 

 appeared [see this Revieiv, Ser. A, iii, p. 32 (January 1915)], was 

 erroneously attributed to the Minister of Agriculture instead of to 

 Dr. C. Gordon Hewitt. The reference, etc. , should read as above. 



Illingworth (J. F.). Further Notes on the Breeding of the Tachinid 

 Fly Parasitic on the Cane Beetle Borer. — Jl. Econ. Entom., Concord, 

 vii, no. 5. October 1914, pp. 390-398, 1 pi. 



The authorship of this paper, of which an abstract was given on 

 p. 88, vol. iii (February 1915) was, through a printers' error, attributed 

 to " Mingworth," instead of to Dr. J. F. Illingworth. 



HuKKiNEN (Y.). Vanliga Stinkflyet. [The common stinkfly {Dolycoris 

 baccarum).] — Agrikultur Ekonomiska Forsoksstationen i Finland, 

 Avdelning for Entomologi. Meddelande till Landyndn no. 34, 

 Helsingfors, 1914, 9 pp., 6 figs. 



This is a short treatise on the plant bug, Dolycoris baccarum, giving 

 information on its systematic characteristics, biology and development, 

 the damage caused by it in the beginning of the summer and the con- 

 trol measures against it. The insects are full grown at the end 

 of July and the beginning of August. The species has been 

 recorded from young fruits and berries and on young shoots 

 of several orchard plants. During the recent dry and warm 

 summers it has increased considerably in numbers and, as a 

 consequence, has begun to attack other plants, such as cereals, turnips, 

 cabbage, etc. This happened for the first time in Kuhmois in 1912. 

 The most serious attacks have been on turnips, clover, barley and rye, 

 but even cabbage and potatoes have been injured. On swedes, 

 cabbage and potatoes, the leaves and shoots are injured and wither 



