- 9 - 
end of the body, as is well shown in the figure. They also differ' 
from any of the preceding larvas in looping the body when they 
travel, like the so-called “ measuring worms” and “ inch worms.’” 
The larva, when mature, unlike the preceding species, spins a slight 
silken cocoon [Fig. 7 /;]. At the end of ten days or two weeks it 
comes forth as a moth. These cocoons are found among the leaves- 
near the base of the cabbage head, if the larv§e are very abundant.. 
There are from two to five broods of this insect in a year, the num¬ 
ber depending upon the length of the summer season. 
The food-plants of this insect, as given by Dr. Filey, are cab¬ 
bage, kale, turnip, tomato, mignonette, dandelion, dock, clover, and 
a few others. 
The remedies are the same as for Pieris raps?. 
THE CABBAGE PLUTELLA. 
{Plutella crueiferarum Zell.) 
This insect, in the mature stage, is also a moth, but a ver}^' 
small, narrow-winged one, that is liable to escape notice. It meas-- 
ures hardly more than half of an inch from tip to tip of the fore* 
wings Avhen they are spread. The moth is shown with wings 
sprea d and closed at Fig. 8, / and li. The general color of the* 
Fig. 8. 
wing is dark to light brown, and there is a wavy, white line along- 
the posterior margin. When the wings are closed over the abdo¬ 
men the two white margins meet so as to make a conspicuous white* 
dorsal stripe, which is continuous, with white upon the thorax and 
head. These markings are well shown at/and li, Fig. 8. 
The winter is probably spent in the chrysalis stage, as the* 
larv8e appear upon early cabbages about as soon as they are set out 
in this locality. These larvse [Fig. 8 a] are slender, green in color,, 
and are ver}^ active when disturbed, wriggling themselves quickly 
off the leaves and dropping on a silken thread. 
When mature, the larvse form delicate white cocoons [Fig. 8 e]j 
timong the leaves, and in a few days appear as moths. These 
