: 
INJURIOUS AND BENEFICIAL INSECTS. 537 
tions, where the weevil may come out and die, without being 
allowed to go at liberty, the beans may be sown with impunity. 
By the exercise of a little care, and by combination among gar- 
deners this pest may be kept under. 
Larva. The grub or larva occurred February 10th in oan ree of growth, the 
largest being one-seventh (-14) of an thee long and ab half as thick (08). Other 
8 were ~ half as long. Some chrysalides oc- 
Fig, 141. 
curred also at this date while the atoll beetles were m 
is much rounded and incurved. The head is white, 
becoming honey-yellow about the abort, puni jaws. 
One specimen was in the semi-pupa e, being in 
termediate between the larva am nites Its ieay' was camera out, the head 
being at the extreme end and now quite prominent, while before it was hidden in the 
soft body. The three AEREN Eri segments were full and ti the third being very 
distinct from the suce eeding one, the basal abdominal segment. The whole body was 
much flatter and thinner than i in ine eh: It was evident that the remarkable changes 
by which it b the Br pected state had begun 
Grub of Bean-weevil. 
INSECTS INJURIOUS TO FRUIT AND FOREST TREES. 
The Seventeen-year Locust.—This remarkable insect having, 
after its long absence of seventeen years, again, as had been pre- 
dicted by observers, made its appearance in the southerly parts of 
the state, we take this occasion to draw attention to its strange 
and unwonted habits, and to solicit aid from observers in the 
state in determining its natural boundaries. I should be greatly 
obliged if any persons in every town in the state in which it ap- 
peared would let me know of the fact, that we may ascertain its 
range. While it has been known to appear in the southeastern 
part of the state, and even as far east as Plymouth, situated on 
Massachusetts Bay, we want to know in what towns to the north 
of this it has appeared. The point is of much interest to natu- 
ralists, as in determining the northern boundary of the district it 
inhabits, which undoubtedly accords with certain lines of temper- 
ature which regulate the distribution of many other insects and 
Plants, it may throw much light on the physical geography and 
meteorology of our state. The cicada also often does much 
injury to fruit-trees, especially in the West, and it is thus, aside 
from its deeply interesting and unique mode of life, an object of 
Solicitude to farmers. 
