INSECTS INJURIOUS TO THE PINE. 
THE WHITE FINE LEAF-LOUSE. 
( Mytilaspis pinifolia ?, Fitch.) 
Order of HOMOPTERA. Family of Coccid^. 
Fitch’s 1st and 2d New York Reports, page 256. 
The White Pine (Finns Strobus of Linnaeus,) is the tallest and 
lost valuable of our timber trees, and also one of the most highly 
allied for ornamental purposes. Unfortunately its balsamic and 
ungent qualities afford it no immunity from the attacks of de- 
tructive insects. Many distinct species and myriads of individu- 
ls find sustenance in its majestic trunk or on its almost mnumer- 
ble leafets. . . „ , 
The species now under consideration appears in the form ol 
ittle oblong, white, muscle-shaped scales, one-tenth ot an inch in 
enath, attached to the leaves, and differing but little, except in 
olor from the well known scales of the Oyster-shell Bark-louse 
,f the apple tree. The insect, indeed, though it lives upon the 
eaves instead of the bark, belongs to the same family and the 
ame genus as this last mentioned notorious species. I do not 
mow "that they infest the tree in its native forest, but they are 
rery injurious to ornamental trees, not only to the White Pine 
iroper, but also it would seem to a still greater extent, to the va- 
•iety known as the Gray or Scotch Pine. They sometimes mul- 
jply go as to almost completely whiten the foliage, like a fine 
mow storm. They belong to the sucking, as distinguished from 
he vnawing division of insects, and impoverish the leaves to a 
treater or less extent, by imbibing their sap. The leaves turn 
brown and unsightly, and in some cases the whole tree presents a 
fickly and decaying aspect. I have noticed that the scales with 
which the insect covers itself assumes a different form upon the 
