122, TURNIP. 
some instances containing the partly developed moth accompanying, 
by Mr. John Browne, from Peasiehill, Arbroath, Co. Fife, N.B. :— 
‘As the leaves of the Swedish Turnips in many fields in this 
district are getting badly destroyed, I forward you some of the affected 
leaves ; underneath the leaf you will notice the insect in the cases. 
‘‘ When they come out of the case and are disturbed they drop 
down on a slim cord to the ground.” —(J. B.). 
Enquiries as to the name of the pest, and circumstances favourable 
or otherwise to its increase, were added. 
In this instance the caterpillars were apple-green and about full- 
grown. The cocoons were attached to the leaf, and in some the 
change of the chrysalis to the perfect moth was so far advanced that 
the form of the wings folded beneath the body could be clearly seen, 
and colouring had begun. As in this attack the condition of the in- 
festation was manifestly (from the various specimens sent me) passing 
from caterpillars in their active condition to the spun-up state, it is 
probable that those noticed as leaving their cases or cocoons had only 
just begun their spinning operations. 
The leaves forwarded were not very much injured, but the charac- 
teristic method of injury of Diamond-back caterpillars, by gnawing 
away the under part of the substance of the leaf and leaving the upper 
cuticle as a film, was quite noticeable. 
The following observations regarding a somewhat severe attack of 
the same infestation in a district near Aberdeen was sent to me on 
Sept. 15th by Mr. H. Simmons, from Monaltrie Villa, Seafield, Aber- 
deen, N.B. :— 
« Having noticed that a great number of fields of Green-top Yellow 
Turnip in this district were suffering from some kind of blight, I care- 
fully examined a lot this morning, and found that the damage was 
being caused by a very small green caterpillar which attacks the 
foliage. I have taken the liberty to send you per parcels post the top 
or leaves cut from one of the above-mentioned Turnips, also a few 
specimens of the caterpillars.” —(H. §.). 
Enquiries as to nature and means of prevention of the attack were 
added. 
The specimens sent were very characteristic. The caterpillars, 
which were numerous, were for the most part nearly or quite full- 
grown, of an apple-green, the head pale and spotted, and the segment 
behind the head with very minute dots. The body of the caterpillar 
with a few black bristles, and the caudal prolegs spreading apart. 
Some of the caterpillars had woven their long light cocoons almost 
entirely by the midrib (as far as I saw) of the Turnip leaves, and 
the chrysalis or moth was quite distinguishable through the open 
network. 
