324 General Notes. { May, 
I have examined the wing-cases of a number of apecies. and 
find that they all have alike arrangement to the one 
scribed, although the shape of the flanges may vary, toa Faro eo 
xtent.—Mewton B. Pierce. 
THE LECANIUM OF THE TULIP TREE.—On page 218 of the 
“Revised Manual,” in speaking of other sources than flowers 
from which bees collect sweets, I remark that I have seen the bees 
thick about a large bark-louse, which attacks and often destroys 
one of our best honey-trees. This is an undescribed species of 
the genus Lecanium. 
In the summer of 1870 this louse, which, so far as I know, has 
never yet been described, and for which I propose the name 
Lecanium tulipifere—the Lecanium of the tulip tree—was very 
ommon on the tulip trees about the lawns of the Michican Agri- 
cultural College, at Lansing. So destructive were they that some 
the trees were killed outright, others were much injured, and 
had not the lice, for some unknown reason, ceased to thrive, we 
should soon have missed from our grounds one of our most 
gran trees. 
e the date above given, I have received these insects from 
cing “of the States, especially those bordering the Ohio river. 
In Tennessee they seem very common, as they are often noticed 
in abundance on the fine stately tulip trees of that goodly State. 
In the South this tulip tree is called the poplar, which is very — 
incorrect, as it is in no way related to the latter. The poplar 
belongs to the htt family ; the tulip to the magnolia, which 
families are wide a 
Wherever the ip -tree lice have been observed, sucking the 
sap and vitality from the trees, there the bees have also been seen, 
lapping up a sweet juicy exudation which is secreted by the lice. 
In 1870 I observed that our tulip trees were alive with bees and 
wasps, even as late as August, though the trees are in blossom 
only in June. Examination showed that the ppn sweets from 
these lice were what attracted the bees. This was observed with 
‘some anxiety, as the secretion gives off a very sciiti odor. 
The oozing secretions from this and other lice, not only of the 
bark-louse family (Coccidæ), but of the plant-louse family 
(Aphidæ), are often referred to as honey-dew. Would it not be 
better to speak of these as insect secretions, and reserve the name 
honey-dew for sweet man from plants, other than those 
which come from the flow 
The fully developed Hat like all bark lice, is in the form of 
a scale (Fig. 1), closely applied to the limb or twig on which it 
works. This insect, like most of its genus, is brown, very convex 
above (Fig. 1), and concave beneath (Fig. 2). On the under side 
which serves to enfold the eggs. Underneath the species in 
question are two transverse parallel lines af f this’ white down (Fig. 
