242 
chitinous membrane of a 
burnt-straw-color. There are not even 
rudimentary feet, but rather indications 
of what would be their normal position. 
On the anterior part of the sternum 
is a dark movable body, plainly seen be- 
neath the skin, corresponding in its 
appearance and motions to the heart of 
the earth-worm, 
The posterior end of this body is 
pointed, the anterior rounded. When 
the insect is at rest, this body is com- 
closed in a 
Lumbricus terrestris. 
paratively stationary. 
From the thorax the body becomes of 
a paler color, cylindrical, rounded at 
posterior end, and much larger than tho- 
racic segments. The abdomen seeins 
filled with eggs and fat, visible through 
the thin membrane. 
The female perfects her last trans- 
formation from about the middle of 
March to the middle of May. When 
first matured from the pupa stage she 
seems to have been covered with short 
hair of a soft silky texture and straw- 
color. This, rubbing off easily with her 
motions, falls like down around her, 
that on the anterior part of the body 
first. As soon as the female is perfected 
she projects her head from the lower end 
of the case and begins to deposit her 
egos. These are cylindrivo-oval, smooth, 
white, and glistening, and about twenty 
in number. They are imbedded in the 
soft hairs from the mother’s body, and 
remain thus for weeks before hatching. 
When the female has ceased depositing 
her eggs her body is an empty, lifeless 
shell. 
It is probable that the life-cycle em- 
braces a period: of two years, as the 
PSLCHE: 
larvae may be found at all seasons, and 
in various stages of growth, well protec- 
ted from the heat of summer and cold 
of winter by their weather-proof cases. 
The eggs mature, according to the sea- 
son, in three, six, or eight weeks and 
the young larvae are found as_ early 
as the latter part of June. Having 
eaten their shells they at once proceed 
to house-building, usually finding suit- 
able materials near at hand, as the 
female imago lives and dies in her case, 
which is swung to a twig or vine of her 
proper food-plant ; but if by chance this 
is inaccessible, many other forms of 
vegetation will serve their temporary 
needs, such as rose-leaves, or the Canna. 
When first noticeable, the larva is about 
2mm. long. It cuts out circular pieces 
from the leaf, about the size of a small 
tack-head; this it spins together with 
a little silk into a small cone, which it 
carries with the apex in the air, the pos- 
terior end of its anal segment adhering 
to the inner surface of the cone. It 
moves about from one part of the leaf 
to another, and, unlike the more fully 
grown individuals, when falling, sus- 
pends itself by a silk thread. It will 
even leave its case and afterwards re- 
turn to it. When not feeding it spins 
its upright tent to the leaf. 
When fully grown and presenting its 
more permanent features, it is about 40 
mm. long with a case much longer. — Its 
head and three anterior segments are 
brownish, polished, and with ivory vit- 
tae and spots. These segments over- 
lap anteriorly, and the elastic membrane 
between is of a dirty lavender color. 
The abdominal rings nearest these, which 
