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The Hessian fly, in different stages, 4, 5, 8, 9. | Grain or wheat worm, in different stages, 2, 3, 12, 13, 14.

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Grain or wheat, vorm, in different stages the worm magnified in lower figures.

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Peach tree borer: 1. female. 2. male. 3. Fallicle. 4. Pupa. | Male and female Canker-worm moth.

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Ox-bott, or Gad-fly, in different stages.

Horse-bots.a. The eggs attached to the hair- b. The shell of the egg, with holes through which the insects escape-c. A section of a horse's stomach with bots attached-d. Fall-grown larva, showing tentacula by which it attaches itsel to the membranes of the stomach-e. The female gad-fly or bottg. The larva of the smaller or red bott.

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Onion-fly and pupa.-a and b. larva natural size and magnified-c and d. pupa, natural size and magnified-e. the fly magnified.

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