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bear a slight resemblance to some species of Lecanium. The oyster- 
shell bark louse, in most parts of Canada a serious enemy of the fruit 
erower, has been much reduced in numbers by the parasite Aphelinus 
mytilaspidis, which has been at work all through the Niagara district. 
Experiments have been tried with several of the usually recommended 
remedies for the oyster-shell bark louse, and the results of some exper- 
iments with a simple lime whitewash, which have been carried on by 
Mr. W. T. Macoun, horticulturist at the Central Experimental Farm, 
are worth mentioning. When spraying trees with whitewash to 
retard the opening of the flower buds, Mr. Macoun noticed that the 
bark lice were killed and scaled off in large numbers from the trees as 
the whitewash fell, and from present appearances the results of spray- 
ing fruit trees infested with the oyster-shell bark louse are such as to 
indicate that this will prove a valuable, simple, and inexpensive 
remedy. 
ROOTS AND VEGETABLES. 
The most troublesome insects this season under this head have been 
the root maggots of the onion and cabbage. Many remedies have 
been tried, but nothing actually new has been learned. The Gough 
tarred-paper disks have been very successfully used, and for cabbages 
and cauliflowers with more satisfaction than anything else. These 
have been fully described by Mr. Slingerland. Among the insect 
enemies of the pea, the pea weevil (Bruchus pisorwm) is still abundant 
in some parts of Canada—a fact, I think, due to greater negligence on 
the part of seedsmen in treating seed than was formerly the case. The 
destructive pea aphis has not yet made its reappearance in Canada this 
season. The white cabbage butterfly (Pveris rape), every year the 
cause of much loss to cabbage growers, has now reached Vancouver 
Island, and thus extends from the Atlantic to the Pacific. The red 
turnip beetle (Hntomoscel’s adonidis) has appeared rather earlier than 
usual in the Northwest, where it attacks all cruciferous plants. It is 
particularly attracted by the wild crucifers, Sisymbriwm incisum and 
Erysimum inconspicuum. Although no serious loss has as yet been 
reported from this insect, with the gradual settling up of the prairie 
provinces it is to be feared that this will become a serious pest of cab- 
bages, turnips, and radishes. 
CEREALS. 
One of the serious outbreaks of the present season is by locusts (JZ 
spretus and atlanis) in Manitoba, which hatched out remarkably early 
this year, namely, by May 20, and owing to the exceptional drought 
have already done much harm to crops. Cutworms have also been 
abundant in wheat fields. A new attack of much interest in the wheat 
fields of Manitoba last year was by the Hessian fly, which reduced the 
crop from 5 to 25 per cent in different places. Anothcr of the old- 
