A handbook of the destructive insects of Victoria, with notes on the methods to be adopted to check and extirpate them . ty is generally ofa very stiff and heavy nature, with a firm, hard, and oftenstony subsoil, and a knowledge of these facts may helpus to unravel this mystery, and would appear to point tothe heavy tenacious soil as one of the principal causes ofthe trees immunity from insects of this kind. In anotherpart of the present number an account is given of animplement by which bisulphide of carbon may be injectedinto the soil. This machine is fully explained, and, it ishoped, may pr
A handbook of the destructive insects of Victoria, with notes on the methods to be adopted to check and extirpate them . ty is generally ofa very stiff and heavy nature, with a firm, hard, and oftenstony subsoil, and a knowledge of these facts may helpus to unravel this mystery, and would appear to point tothe heavy tenacious soil as one of the principal causes ofthe trees immunity from insects of this kind. In anotherpart of the present number an account is given of animplement by which bisulphide of carbon may be injectedinto the soil. This machine is fully explained, and, it ishoped, may prove as successful as has been we can master the pests at the roots, success as tothe other pests, if carefully attended to, will be sure tofollow. DESTRUCTIVE INSECTS OF VICTORIA: PLATE XVI. Black Peach Aphis (Mtzus cerasi. Fabr.).Fig. 11 Branch of peach, showing insects on stem and young size. 2. Winged female. Magnified. 3. Wingless female. Magnified. 4. Pupa. Magnified. 5. Winged male. Magnified. (After Buckton.) 6. Winged female, green. Magnified. 7. Rostrum (or beak). C. G#ritiU&an&. -Del. ? Plat. THE BLACK PEACH APHIS. CHAPTER XXII. THE BLACK PEACH APHIS. (Myzus cerasi. Fabr.)Order : Hemiptera. Sub-order: Homoptera. Family : Aphididce. This is one of the two kinds of Aphis so much dreadedby growers of peaches throughout the colony. It is anintroduction from Europe, where, according to Buckton,it does much injury to the cherry orchards in early spring,when they cluster by thousands under the leaves and drythem up as if scorched by heat. Fitch, in America,counted 190 ranged down the mid-rib of one leaf. Theychoke and gum up the pores of the leaves by the secre-tion which they eject from their conicles, or leaf-likeprocesses. On account of this sweet substance theaffected branches are much visited by ants, of which thelittle black one, with a vile smell, and a perfect terror tohousewives, would appear to be the most common here. To
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