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THE CABBAGE PLUTELLA. 
( Plutella crucifer arum Zeller.) 
Second only in importance to the Cabbage Plusia is another cabbage 
worm, the “ Cabbage Plutella,” the larva of a small moth, and which 
may easily be confoun.ded with the very young larva of the Cabbage 
Plusia. 
This insect was treated at some length in Professor Riley’s Annual 
Report as Entomologist to the Department for 1883, and it will therefore 
be unnecessary to go into detail here? I maj state, however, that while 
at the North there are probably but two annual generations, there are 
at least four here in Florida. Tbe larvse are quite plentiful on cabbage 
from the last of February to July, and again in the fall. The damage 
done is very similar to that of the 'Plusia and is almost as great, al- 
though it seldom attacks other than the outer leaves. 
I have bred a parasite, additional to those mentioned by Professor 
Riley, which agrees with the description of Cresson’s Limneria obscura. 
THE CABBAGE APHIS. 
(Aphis brassicce Linn.) 
The Cabbage Aphis (Aphis brassicce ) first described by Linnaeus, in 
his “Systema Naturae,” is quite widely spread throughout this country 
and Europe. It was undoubtedly imported into this country at a very 
early day, for Dr, Fitch shows, by reference to the Transactions of the 
New York State Agricultural Society for 1791, that it was already 
known as a cabbage pest at that early date, and at this day it has 
spread to most parts of the world where the cabbage is cultivated. 
Food Plants — It is found on the Turnip, Raddish, Field-cress (Isatis 
tinctoria ), Shepherd’s-purse (Capsella bursa-pastor is), Charloch (Brassica 
arvensis ), Cabbage, and other cruciferous plants. 
Here I found it on Cabbage, Turnip, and Raddish. 
Its Life History. — The Young. — These are oval, about .01 inch in 
length, and of a greenish -yellow color, without the mealy coating of the 
older ones. 
Buckton, the British authority on the Aphididae, thus describes the 
different forms : 
Apterous Vivijjarous Female. — Body long, oval ; plentifully covered with a wliitisli 
mealy coat, hoth on the upper and under sides. When this is removed by a drop of 
spirits of wine the body below is grayish-green, with ©light black spots ranged down 
each side of the back, which increase in size as they approach the tail. Antennae 
green with black tips, shorter than the body. Eyes and legs black. Cornicles very 
short and black. Tail also small and black. 
Winged Oviparous Female. — Head, neck, and thoracic lobes black. Antennae and 
nectaries dark brown. Eyes black. Rest of the body yellowish-green. Abdomen 
with a row of fine punctures on each lateral edge, with several obscure transverse 
dorsal marks. Legs dusky brown, pilose. Tail dark green or brown ; hairy. Cor- 
