145 
A correspondent to the Canadian Entomologist, from Peterboro, 
Ontario, writes: “In 1874 my cauliflowers and cabbages, during my 
frequent absence from home, were well-nigh eaten up by this garden 
pest, and such as were not actually devoured were rendered unfit for 
use by the quantity of excrement deposited between the leaves of the 
plants.” 
While visiting in Central New York in the summer of 1876, I had 
a chance to see the working of this insect in my father’s garden, and 
can say that. the above is not an exaggeration. The time was the 
latter part of August, when the heads of the late cabbages were be¬ 
ginning to form. The incipient heads were eaten through and 
through, there not being a single one that had escaped, while the 
white butterflies were flying about over the patch. 
This caterpillar is a pale green worm, an inch and a half long, 
finely dotted with black; a yellow stripe down the back, 
and a row of yellow spots along each side, in a line with the stigmata 
or breathing pores. The eggs from which these are produced are laid 
on the under side of the leaves. There are at least two broods of the 
worms in a season, the first changing to chyrsalids in June and 
hatching to butterflies in seven or eight days afterwards, while the 
second brood pass the winter in the pupa state. The chrysalis is vari¬ 
able in color, being sometimes yellowish brown or yellow, and passing 
thence, into green speckled with minute black dots. The perfect 
insect is about the size of the turnip butterfly. In color the body is 
black in the male, the wings white, with the tip and a dot near the 
middle of the front wings black, and a black dash in the front edge 
of the.hind wings. On. the under side, there are two black dots on the 
fore wings, while the tip and the whole surface of the hind wings are 
lemon yellow. In the female the upper side of the wings are a whi¬ 
tish ochre, while the lemon yellow of the under side is more intense 
than in the male, and there are two dots on the upper side of the fore 
wings instead of one. 
These caterpillars differ from both the foregoing kinds in their 
manner of eating. While the larvae of the southern cabbage and 
the turnip butterflies feed mostly on the outside leaves, going but 
little, if any, into the head; these are much more destructive, as they 
have the habit of boring into the interior of the head. When about 
to change to chrysalids they, like the last, leave the cabbage and 
attach their chrysalids to the underside of sticks, pieces of board and 
stones that are above the ground, etc—anything that can offer a shel¬ 
ter and support. 
Remedies .—As in the preceding, advantage may be taken of the fact 
that the full.grown caterpillars leave the cabbages for some sheltered 
place in which to undergo their transformations, by placing boards, 
that are raised a little from the ground, among the infested plants. 
By examining these boards every five or six days and destroying the 
chrysalids, the future work of the worms may be very materially les¬ 
sened. Where there are but few infested plants, the caterpillars may 
be destroyed by hand. As the worms work inside the heads more 
than either of the other species, chicken picking would be of but 
little service, as they would not find those that were doing the most 
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