G02 
The Diamond-hack Moth. 
attack. Several are isolated observations, but where practicable, 
they are arranged under the headings of their respective counties, 
and these under the headings of England and Scotland, with some 
small amount of observation of presence of the infestation in Ireland. 
England. 
Yorkshire. — The first communication which I received regarding 
presence of the caterpillars of the diamond-back moth was sent me 
on July 2, from Long Whins, Hunmanby, Yorks, by Mr. Robt. W. 
Smith, as follows : " Herewith I send you leaf of a turnip with 
specimens of caterpillar which has on some farms in the neighbour- 
hood entirely destroyed the turnip crop and is fast destroying it on 
my own." The specimens forwarded were much eaten from the 
underside so as often to leave mere patches of the upper cuticle of 
the leaf remaining, and sometimes even this was eaten through. Tho 
caterpillars accompanying were of various tints, from yellowish colour 
to apple green, and of variovis sizes from a quarter to full grown. 
On July 22, specimens of turnip and cauliflower plants infested 
by diamond -back caterpillars were forwarded by Mr. Thos. Brown, 
Pocklington, Yorks, with mention that, according to report received, 
scores of acres were similarly affected. 
On July 21, report was sent from Spiker's Hill, West Ayton, 
Yorks, on the part of Mr. Thos. Darrell, mentioning that caterpillars 
(of which specimens showing them to be diamond-backs were 
subsequently sent me) were eating up all turnips and swedes in 
this locality. 
On July 24, specimens were sent from Lebberton, near Filey, 
Yorks, by Mr. John P. Darrell, with mention that the attack had 
somewhat abated since the previous communication, as some nice 
showers had fallen which seemed to strengthen the plant. 
Mr. G. W. Clark, auctioneer and valuer. Great Driffield, Yorks, 
(from whom, as will be seen further on, I had subsequently valuable 
notes as to different amount of attack on different nature of land), 
forwarded me diamond-back caterpillars on July 24 as specimens of 
the pest that was making havoc of the turnips. 
On July 25, Mr. Pippet, agent for Lord Herries, of E\'er- 
ingham Park, York, forwarded specimens of badly injured turnip 
leaves, together with diamond -back caterpillars, and the observation 
that the attack was ruining whole fields of turnips in the district. 
On July 29, inquiry was sent me by Lord Auckland from 
Edenthorpe, Doncaster, regarding the diamond-back caterpillar 
which had been devastating fields in that neighbourhood ; and on 
July 31, Lord Auckland further mentioned thOiton visiting one of his 
fields that morning, he found great numbers of specimens, including 
caterpillars, chrysalids, and moths, but the latter form was the most 
numerous. Lord Auckland was good enough at the time to reply 
to some of my inquiries, which answers are placed with those with 
which I was afterwards favoured by observers in reply to my 
circular. 
