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Haltica punctipennis Lec.*—About the 20th day of May this beetle 
began appearing in large numbers in northern Colorado upon numerous 
native and cultivated plants, and many complaints have been received 
concerning its injuries, especially to small apple trees in nursery rows. 
Tt has also been quite abundant upon grapevines and the foliage of red 
raspberry, and it has attacked strawberry plants to a small extent. 
The native plants upon which it has been most abundant here are 
species of (Hnothera, two of which, @nothera biennis and Gi. pinnati- 
jida, have supported the beetle in great numbers. 
Plant-lice.—The present summer has been the most favorable for the 
increase of plant lice of any that I have yet known in Colorado. The 
cause seems to be the lack of sufficient predaceous enemies to keep 
them in check. 
There are two species of which I wish to speak in particular. The 
first of these, Hyalopterus pruni Fab., has not attracted special atten- 
tion in Colorado previous to the present summer so far as I can learn. 
The attack this year has been widespread, complaints having come to 
me from the west slope and, on the east of the mountains, from Rocky 
Ford to Fort Collins. The complaints concerning these lice have nearly 
equaled all other complaints concerning insects the present summer. 
The injuries have been chieiy to American varieties of the plum, but 
it has also been reported upon prunes. Trees heavily set with plums 
have dropped their entire crop of fruit and nearly all their leaves and 
are how putting out new leaves. Plums aud their stems, as well as 
the leaves, were literally covered with green lice before the predaceous 
insects, chiefly Syrphlus larvee, began to get them under control. Com- 
plaints are now coming (August 5) that the lice are rapidly increasing 
again, and it is feared that they will destroy the new leaves that 
have appeared. The photograph marked 1, which I send with this, 
shows wilted leaves and blasted fruit upon a twig of a plum tree that 
was badly attacked by the lice. The photograph marked 5 shows the 
lice upon the plums and plum stems. One can readily understand how 
piums thus infested soon wilt and fall. 
In our experiments, whale-oil soap, in the proportion of a pound to 8 
gallons of water, has been more effectual than the ordinary kerosene 
emulsion in destroying the lice. The powdery excretion upon the sur- 
face of these lice interferes greatly with any successful treatment unless 
the application be made with much force. 
The most common lady-beetle among these lice was Hippodamia con- 
vergens Guer., but it was not very abundant. Syrphus larvee destroyed 
many more lice than the Coccinellid larve. and most of them were of the 
one species, Hupeodes volucris O. S. 
Schizoneura americana Riley, on white elm.—This louse has been 
“A careful comparison of the beetle with its description and with specimens deter- 
mined for me by Mr. Charles Liebeck and Mr. E. A.Schwarz show them to be this 
species and not foliacea Lec. 
