. Natural history. For the use of schools and families. Zoology. HALF-WINGED INSECTS. 291. takes place. Sometimes the animal is not able to effect its exit, and dies in the struggle. These shells may often be found clinging to trees and fences in considerable numbers. It is supposed that the Seventeen-years Locusts really remain in their grub state under ground seventeen years, but Jaeger holds to the contrary. 494. The Frog-hoppers are so call- ed from their great power of leaping. Fig. of Cicada, rpj^^^g of this family most familiar to us are the Tree-hoppers, of which a specimen is


. Natural history. For the use of schools and families. Zoology. HALF-WINGED INSECTS. 291. takes place. Sometimes the animal is not able to effect its exit, and dies in the struggle. These shells may often be found clinging to trees and fences in considerable numbers. It is supposed that the Seventeen-years Locusts really remain in their grub state under ground seventeen years, but Jaeger holds to the contrary. 494. The Frog-hoppers are so call- ed from their great power of leaping. Fig. of Cicada, rpj^^^g of this family most familiar to us are the Tree-hoppers, of which a specimen is given in Fig. 226. The thorax or chest of these insects is very large. They are commonly motionless for hours together; but if they are disturbed, they make a sudden leap of two or three hund- red times their own length, and, spreading out Tr««. opper. ^.j^^jj, .^^jjjgg^ gy gff iQ gome other spot. The insects of this family are sometimes called Froth-hoppers, from a frothy fluid which exudes from them. In some species, in tropical countries, this exudation is very abun- 1^495. The AphidsB, or Plant Lice, have small, round, full bodies, presenting different colors on different plants. Some have wings and some have not. They live in great numbers on the stalks and leaves of plants, sucking the sap with their beaks. The postures which they sometimes assume is very amusing. I saw the past summer in my garden some stalks of the wild Aster lined with them from top to bottom, and every one had its head downward. The hind legs did not touch the stalk at all, but were raised up, and the insects rested on the fore legs and the beak. Thus standing out, and being of a reddish color, they gave the appearance of or- oamental appendages, until the eye was brought neat enough to see what they Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1883