123 
September 5th. Males disappeared. Young females still on the 
leaves. 
September 30th. The L. acericola have commenced moving, from 
the leaves to the limbs, and are settling down upon the lower side of 
the limbs, the heads not always in the same direction but always 
found extended lengthwise with the limh. 
October 15th. The leaves are falling from the trees, and the lice 
returning to the limbs. 
November 1st. The leaves have fallen, and the lice have settled 
down on under side of limbs. 
The increase over last year is very great. 
Natural History .—With the preceding notes, we have the life 
history nearly complete, and are prepared to enter into the minutia, 
somewhat. 
In the autumn, when the lice have returned to the limbs from the 
leaves where they have passed the summer months, they have be¬ 
come stronger in every way. The beak, at first so fragile, is now 
strong enough to pierce the bark, and my impression is, made by as 
close an examination as is possible to make, that the beak is inserted 
in the limb when the removal first takes place in the autumn, 
remaining in this position during the winter months. I find by 
carefully raising the lice from off the limb, the beak is always broken 
off close to the head, while if this was not the case, we should find it 
entire on the under side of the body. They are awakened in. early 
spring by the warm weather and the sap of the tree commencing to 
flow. 
The greatest irregularity exists in reference to the position which 
they assume on the limb, the bodies oftentimes over-lapping each 
other, when greatly crowded, lying in opposite directions, with the 
exception that they are always found lying lengthwise with the limb. 
Early in the month of May the attention is attracted to the ground 
or sidewalks, underneath the infected trees, which is covered with 
spots similar to honey-dew, the lower limbs and opening leaves pre¬ 
senting a sticky sensation to the touch, which continues to be noticea¬ 
ble for something over one week before the deposition of eggs com¬ 
mences. This is caused either by the many punctures made, in the 
bark of the tree, the sap coming out at these points, or as is more 
natural, issuing from the insects themselves. 
I find the appearance °f this honey-dew occurring under the infes¬ 
ted trees, recorded in the notes by Mr. Putnam, as early as May 13 r 
1871. The cause as given above is more rational, perhaps, when we 
find this ceases, as soon as the waxy secretion is observed issuing 
from the posterior portion of the insect. 
This secretion issues from the general under surface, but particu¬ 
larly from the thorax and abdomen. 
From the sides of the body under a common lens, can be seen short 
thick hairs, from these points and between the abdominal joints a 
portion of the waxy mass is secreted, but from around the anus comes 
the greater quantities. 
In this mass the eggs are concealed, the work goes on regularly, 
since we find the first eggs in the mass shortly after it is perceived, 
and the insect continues partaking of the sap during the enlarge¬ 
ment of the egg-mass. 
