The periodical cicada in WVa. . 7^ 1st Report onthe Insects of Mo., 1868. Bulletin 8 of the Division of S. Dept, of Agr., May, 1885; and the Report of theU. S. Dept. of Agr., for 1885. Considerable additional informa-tion has been published from time to time by different Stateand Station entomologists and by the Division of Entomologyof the U. S. Dept. of Agriculture. Thus, a mass of information has accumulated with referenceto the habits, life history, geographical distribution, and other in-teresting features of this remarkable insect. WEST VIRGINIA EXPERIMENT STATION. During the mon
The periodical cicada in WVa. . 7^ 1st Report onthe Insects of Mo., 1868. Bulletin 8 of the Division of S. Dept, of Agr., May, 1885; and the Report of theU. S. Dept. of Agr., for 1885. Considerable additional informa-tion has been published from time to time by different Stateand Station entomologists and by the Division of Entomologyof the U. S. Dept. of Agriculture. Thus, a mass of information has accumulated with referenceto the habits, life history, geographical distribution, and other in-teresting features of this remarkable insect. WEST VIRGINIA EXPERIMENT STATION. During the month of June each female cicada deposits threeto five hundred eggs in numerous ragged punctures made byher powerful ovipositor in the twigs of shrubs and trees, andsometimes in the stems of herbaceous plants. These hatch in. Wounds in apple twigs made by female cicada when ovipositing. 1—Fresh wounds where eggs have been deposited. 2—Condition ofsame three months later. 3—Condition of same one to four years later.•4—Condition four to seventeen years later. The change in the conditiondepends on whether the wounded twig is making a slow or rapid growth. 5—Wound seventeen years old, prevented from healing by slow growthof twig which was in the top of an old apple tree. Evidence is also foundthat the wound had been aggravated by the woolly aphis, (Sketchedfrom specimen collected January, 1898.) about six to eight weeks from the time they are deposited, andthe young cicada larvae emerge from the twigs and fall to theground. They then burrow beneath the surface and enterupon their long and menial existence in the ground, feeding on THE PERIODICAL CICADA. 7 the liquids of roots and possibly subsisting on such nutrimentas can be obtained from the soil itself. They change their posi-tion from time to t
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