PREFACE. 
In offering my Seventh Yearly Report to the contributors 
who have favoured me with notes of observation, I once again 
beg them to accept my sincere thanks for their very serviceable 
information. 
Further, I should be doing wrong in not acknowledging the 
great obligations I am under both to the agricultural and general 
press not only in encouragement of my endeavours, but also in 
drawing attention to the great importance of the subject of 
practicable agricultural measures being often available at a paying 
rate to save the field crops from attack, or carry them through 
it. I also gratefully acknowledge the kind assistance I have 
received from Professor J. 0. Westwood, Life President of the 
Entomological Society, Mr. R. H. Meade, and Mr. G. B. Buckton 
in naming specimens I was unacquainted with. To all I tender 
my hearty thanks, and earnestly request their continued kind 
assistance. 
The most severe attacks of the past season of 1883 have 
(chiefly) been those of Fly-maggots and grubs of various sorts. 
Daddy Longlegs grubs were a general trouble ; so were Cabbage 
and Turnip-root maggots; and likewise the maggots of the 
Celery and Parsnip Leaf-miner ; and in some places those of 
the Mangold Leaf-miner. More information is much needed as 
to the means of prevention and remedy of these four kinds of 
attacks, and also as to the reasons of the prevalence of the 
last two. 
Mangold-leaf maggots have hitherto been supposed, in this 
country, to belong to only one kind of Fly, but there appears 
now reason to think that other kinds may be present, and there¬ 
fore specimens of Mangold-leaf maggots would be very acceptable 
in the coming season, as points in the habits of the Flies they 
