GOUT FLY ; RIBBON-FOOTED CORN FLY. 
31 
two white points, at the blunt or rounded hinder extremity, and the 
pair of mouth hooks at the somewhat tapering front extremity (what 
may be called the head end) are very small. The maggot of the “ Frit 
Fly” has two projecting spiracles at the blunt hinder extremity, and 
is bluntly pointed at the head end, which contains two strong mouth 
hooks, and on each side near the head it has a branched spiracle. The 
maggot of the Wheat-bulb Fly has a pair of fleshy, somewhat flattened, 
square teeth at the extremity of the blunt hinder extremity, and on 
each side of this central pair is one tubercle or tooth and sometimes 
more. When examined under a magnifier the central teeth will be 
found to be concave at the extremity. The head end contains two 
powerful black mouth hooks. For figures of these details see paper on 
Wheat-bulb Fly. 
On the 9tli of July, in the past season, Mr. Eardley Mason wrote 
me from Alford, Lincolnshire, that on examination of fields in that 
neighbourhood he found Chlorops attack was abundant, but otherwise 
only a few observations of presence of the infestation were sent me. 
These, for the most part, were only enquiries as to the nature of the 
attack, with specimens accompanying; the dates of application being 
from July 29tli to August 25tli; the localities near Bridgwater, Leo¬ 
minster, Doncaster, and Nottingham. Amongst these, however, the 
following note is of interest, which was sent on the 29th of July, from 
Springhill, Bulwell, Nottingham, by Mr. Arthur Gibson. This, it will 
be seen, gives an estimate of loss, and also notes that the infestation 
only occurred where seed from a locality and kind of land named was 
used. Mr. Gibson wrote :—“ I have taken them (the specimens of in¬ 
fested Barley, Ed.) from a 16-acre field of Barley. I notice the attack 
on one side of the field only; the crop generally is a heavy one, but 
at the spot from where I gathered these ears there would, I should say, 
be quite 10 per cent, similar to those I send you. I had the seed from 
Goole,—Wliarfe land. My other fields appear quite clear from the 
pest where different seed was used.” 
No advance was mentioned in methods of prevention or remedy 
beyond what has been previously reported, and of these the most 
practicable measure appears to be that brought forward in 1889 by 
Prof. W. McCracken, as observed by himself at the Boyal Agricultural 
College, Cirencester, of the beneficial effects of early sowing. In the 
instances he gave me (see my 13th Report) the portion of the crop 
sown in March was free from injury; that sown on April 6th was 
injured to the extent of 2 per cent., and that sown on May 3rd to the 
extent of not less than 20 per cent. 
i 
