88 
CORN AND GRASS. 
site they may propose to turn loose in our crops, and the most serious 
consequences might be expected to ensue. 
Hessian Fly, nat. size and magnified. 
On this point we have the advantage of a very clearly expressed 
opinion from the excellent authority of the Entomologist of the Dept, 
of Agriculture, U.S.A. Prof. Riley states:—“At present, and with 
general entomological knowledge in its present state, there can be no 
doubt that it will be advisable to burn or otherwise destroy screenings 
which examination shows to contain puparia. It is a great bother for 
any one to breed parasites, and for a practical man it is out of the 
question.” * 
No observations were sent me of presence of the attack in the 
autumn-sown or winter Wheat. 
Winter attack .—As yet I have received no information of winter 
attack of Hessian Fly being present, that is to say the form of attack 
caused by the Hessian Fly laying her eggs on the young autumn Corn 
shortly after it has come up, which attack is necessarily quite distinct 
in form to the summer infestation. 
Presence or absence of this is of enormous importance, as so long 
as we do not suffer from this not only is the growing crop safe, but we 
are spared the increased amount of multiplication which would other¬ 
wise have taken place. It may therefore be of practical interest to 
give some special observations as to the appearance of the infested 
crop. 
The fly is stated to lay her eggs at the sheathing base of the leaves 
of the young plant, just above the roots or near the surface. 
The appearance of the attacked plant is described by Prof. F. M. 
Webster, of Lafayette, Ind., U.S.A., in his circular on Hessian Fly, 
with figure (now given opposite) showing the fly maggot at “a.” 
“ The plant itself has not tillered, the leaves are of a darker colour 
than those of a healthy plant, and proportionally broader. The 
central spindle-shaped leaf is missing, and the whole plant is only a 
* ‘Insect Life’: periodical Bulletin of TJ.S.A. Dept, of Agriculture, March, 1889, 
p. 294. 
