. Annual report, including a report of the insects of New Jersey, 1909. Order HOMOPTERA, This ordinal term is employed for those Rhyngota in which the two pairs of wings are -either similar in texture, as in the plant-lice or "Cicada," or the primaries are of the same texture throughout, though this may be different from that of the secondaries, as in the leaf-hoppers. The mouth parts are composed of four lancets, of which two are usually grown together concealed in a jointed beak, except in the Coccidae or scale insects, in which the mouth parts are quite generally aborted in the ma
. Annual report, including a report of the insects of New Jersey, 1909. Order HOMOPTERA, This ordinal term is employed for those Rhyngota in which the two pairs of wings are -either similar in texture, as in the plant-lice or "Cicada," or the primaries are of the same texture throughout, though this may be different from that of the secondaries, as in the leaf-hoppers. The mouth parts are composed of four lancets, of which two are usually grown together concealed in a jointed beak, except in the Coccidae or scale insects, in which the mouth parts are quite generally aborted in the males and reduced to thread-like lancets in the females. Usually the base of the beak is on the under side of the head, and its point is directed backward so that it rests between the haunches of the foro-legs. All the species are plant feeders, piercing the tissue by means of the lancets and exhausting the cells be- neath. They are, therefore, of eco- nomic importance, and, as a matter of fact, some of our most destructive species belong to this order. In a general way the transforma- tions are incomplete; but the life his- tories of the species are often involved and sometimes curiously unique. No general recommendations for treat- ment can be given, except that only contact poisons are of any avail and stomach poisons are never indicated. Since the previous list was pub- lished this order has received much attention from collectors and students, and the number of species here listed has been greatly increased. Most of the species previously included as probable inhabitants have been defi- nitely authenticated and a few have '^> been dropped for one reason or an- other. By the courtesy of Mr. E. P. Van Duzee, of Buffalo, N. Y., the collec- tions of certain of the groups made in New Jersey have been determined, and he has also been good enough to look over the manuscript in these groups and to give me suggestions as to the order of species and genera. A very few species remai
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