HOP FLEA BEETLE, AND HOP GONE OR STRIG MAGGOT. 
71 
Mr. Turvill, also, writing from near Alton, mentions tlie 
appearance of “Mature Fly” about the 20tli of May, and deposit 
following. 
These points—namely, where they spend the winter, or whether 
they migrate—are what we need to know , in order to be able to 
forestall attack, and what can only be made out by watching the 
Hops. 
Aphis attack has now been going on as a most serious trouble 
for more than ninety years, and will so continue until we gain 
more knowledge, but a little careful observation by many growers 
would most likely give all we need to teach us how to reach the 
enemy when at our mercy in winter quarters. I should gladly 
receive any notes that I may be favoured with on the subject, to 
be formed into a paper for publication, and I would with the 
greatest pleasure identify whether specimens sent were Hop Aphis, 
or give every information in my power. 
Hop Flea Beetle, Psylliodes attenuatus; and Hop Cone or 
Strig Maggot. 
On April 22nd I received from Mr. T. H. Hart, Kingsnortli, Kent, 
specimens of the above-named Beetle, with the observation that this 
kind may be considered as “ the” Hop Flea Beetle of the district, the 
damage caused by “tooth-legged” or “brassy” Flea Beetle being 
small in comparison. The observer notes that nine-tenths of 
many hundreds taken in Hop gardens have proved to be this 
species, but that at a distance from such gardens he has seldom 
found it. 
The two kinds of Beetles are very much alike, both of them being 
brassy or bronze-green above, and about the size and shape of the 
common Turnip Flea Beetles, but under a magnifying-glass the 
P. attenuatus may be distinguished by the shank of the hind pair 
of legs having the foot inserted a little ivay up it (instead of at the 
lowest end), whilst the “tootli-legged” Flea Beetle has a tooth 
on the outer side of the shank of both of its two hinder pairs of legs 
(see fig.). 
Where the Psylliodes propagate is not known, neither is it known 
what the little white maggot, which sometimes does a deal of harm by 
burrowing along the strig of the Hop cone, turns into ; but if we can 
get a few observations, made about the beginning of September next, 
this point may be made out, and I conjecture we shall find the white 
