47 
“strig” fly maggot. 
lessly black and leaves fallen off, the ‘ Cuckoo ’ could not be found, 
and we were hoping he had removed ; this year (1888) he has again 
appeared, but at present (May BOtli) it looks as if the plant would be 
master. 
“ The injury done by them is by puncturing the bine ; after they 
have left it the sap exudes in beads, and the plant is literally bled to 
death.” 
The appearance of the Jumper, in connection with the use of old 
poles, is worth further observation, as, if found to occur as a frequent 
thing, it might perhaps be stopped at a moderate cost, by different 
treatment of the poles, or more careful tarring of the ends. 
“ Strig ” Fly Maggot. (Scientific name not ascertained at present.) 
In the course of 18821 received information from various observers 
regarding a maggot which did much harm by tunnelling passages in 
the stalk or strig of the Hop cones. 
The damage was plainly to be seen, but I failed in any case to find 
the maggot within; this year, however, we have advanced so far 
as to find that the maggots are certainly those of some kind of two¬ 
winged Fly. 
On August 31st Mr. W. J. Goodwin (who had communicated with 
me on the subject in 1882) reported from Winfield House, Cranch, near 
Sevenoaks, that there was again a bad attack of maggot in the strig of 
the Hops, and specimens of infested strigs were forwarded. These 
were tunnelled by the maggots, some of which were then at work in 
the strigs, and, on laying them on the table, the maggots shortly were 
very plainly to be seen, for they came out from the cones, and, joining 
head and tail, skipped (for their size) with tremendous leaps all about 
in the fashion of cheese-maggots. These maggots were white, very 
numerous, and certainly of some kind of two-winged My. 
The only kind of two-winged My which I find mentioned as 
injuring the Hop by the minings of its maggot is the Agromyza 
frontalis, one of a genus of “ small to very small ” Flies, of which the 
maggots live generally by “ mining in leaves or in the pith of plants, 
and which are all vegetable-feeders.” But I do not find that mention 
is made of any kind of Agromyza maggots having the power of 
skipping about, which is a most marked characteristic of these strig 
maggots. 
In turning to the genus, which includes the Cheese Maggots 
( Piophila ), I find that there is one small kind which is noted as having 
“the habits of an Agromyza 1 '; therefore I conjecture we may very 
likely find this maggot, which is so injurious to the Hop-cones, is the 
