THE MARGINED LARGUS: REMEDIES. 167 



Remedies. 



There is but little probability that this insect will become particularly 

 injurious to peaches or to other fruits. From the little that is known 

 of its habits, and from what may be inferred from related species, it 

 will rarely, if ever, ascend trees in search of food, but will prefer to 

 seek its food upon the ground. 



It would be difficult or impossible to devise a preventive of its at- 

 tack, as its suctorial habits preclude the beneficial use of external appli- 

 cations to the fruit. It remains, therefore, iii the event of its abundance 

 and threatened injuries, to find means for destroying such numbers as to 

 lessen the amount of its depredations. It is probable that the same methods 

 that have been employed with beneficial results for the destruction of the 

 cotton-stainer, as given by Mr. Glover, will also serve for this: " These 

 insects being in the habit of collecting together where there were splint- 

 ers or fragments of sugar-cane on the ground, advantage was taken of 

 this fact to draw them together by means of small chips of sugar-cane 

 laid upon the earth near the plants, when they were at once destroyed 

 by boiling water. They also collect around heaps of cotton seed where 

 they may readily be destroyed at the commencement of cold weather. 

 Small heaps of refuse trash, dried cornstalks, or especially of crushed 

 sugar-cane, may be made in various parts of the plantation in the 

 vicinity of the plants. Under these the insects take shelter from the 

 cold, and when a sufficient quantity of the bugs are thus drawn together 

 the various heaps may be fired, and the insects destroyed with the trash. 

 A very cold morning, however, should be selected, and the fire made 

 before the insects have been thawed into life and vigor by the heat of the 

 sun; and especially all dead trees, decayed stumps> and weeds in the 

 vicinity of the field should be burned or otherwise destroyed, as they 

 afford a comfortable shelter for all sorts of noxious insects, in which 

 they can pass the winter in a semi-dormant state." 



Cicada septendecim Linn. 

 The Seventeen-year Locust. 



(Ord. Hemiptera: Subord. Homoptera: Fam. Cicadid/e.) 



LiNN^lTS: Syst. Nat., i, pt. ii, 1767, p. 708, No. 20. 



Fabr.: Syst. Ent., 1775, p. 679, No. 6; Spec. Ins., ii, 1781, p. 319, No. 6; Mant. 



Ins., ii, 1787, p. 266. No. 9 (Tettigorda septendecim). 

 Hildreth: in Silliman's Amer. Jouru. Sci.-Arts, x, 1826, pp. 327-329 (emergence, 



oviposition^ injuries, etc.). 



