The Committee on Entomology respectfully report: That their attention has recently been directed to several insects, of which specimens, in various stages of transformation, were received from members of the Society.

A species of Coccus, or Scale Insect, of the Apple tree; a noxious bark-louse, which injures the tree by sucking the juices from the branches to which it is permanently attached. They are of a brown color, about one-tenth of an inch in length, of an oblong oval form, and gregarious in their habits. Where they are crowded together in great numbers, on the limbs and branches, as is often the ease, the growth of the tree is materially impaired, and its life endangered. Dr. T.

W. Harris, in his able "Report on the Insects of Massachusetts injurious to vegetation," recommends, as the best remedy for its destruction, "a wash made of two parts of soft soap and eight of water, with which is to be mixed lime enough to bring it to the consistence of thick whitewash." This application is to be put on with a brush, to the limbs affected, "in the early, part of Jane, when the insects are young and tender." We have also used, with entire success, in the winter, the whale-oil-soap, applied with a hard brush.