T’. W. Harris on the Seventeen-year Locust. 219 
but separated from each other by a portion of woody fibre, and 
one end points upwards. When two eggs have been thus placed, 
the insect withdraws the piercer for a moment, and then inserts 
it again and drops two more eggs in a line with the first, and 
repeats the operation till she has filled the fissure from one end 
to the other, upon which, she removes to a little distance, and 
begins to make another nest to contain two more rows of eggs. 
She is about fifteen minutes in preparing a single nest and filling 
it with eggs; but it is not unusual for her to make fifteen or 
twenty fissures in the same limb; and one observer counted fifty 
hests extending along in a line, each containing fifteen or twenty 
eggs in two rows, and all of them apparently the work of one 
msect. After one limb is thus sufficiently stocked, the Cicada 
goes to another, and passes from limb to limb and from tree to 
tree, till her store, which consists of four or five hundred eggs, 
is exhausted. At length she becomes so weak by her incessant 
labors to provide for a succession of her kind, as to falter and fall 
im attempting to fly, and soon dies. 
Although the Cicadas abound most upon the oak, they resort 
occasionally to other forest trees and even to shrubs, when im- 
pelled by the necessity for depositing their eggs, and not unfre- 
quently commit them to fruit trees, when the latter are in their 
Vicinity. Indeed there seem to be no trees or shrubs that are 
exempted from their attacks, except those of the pine and fir 
tribes, and of these even the white cedar is sometimes invaded 
by them. The punctured limbs languish and die soon after the 
€ggs which were placed in them are hatched; they are broken 
by the winds or by their own weight, and either remain hanging 
by the bark alone, or fall with their withered foliage to the 
ground. In this way orchards have suffered severely in conse- 
and the claws of the fore-legs, which are reddish ; and it is cov- 
ered with little hairs. In form it is sorhewhat grub-like, being 
