90 



FIRST BOOK OF ZOOLOGY. 



save that it has no wings, these growing gradually as the 

 creature increases in age. Fig. 87 represents a young grass- 

 hopper with the wings just appearing. At intervals, the in- 

 sect sheds its skin, or moults, the wings continually increas- 

 ing in length until mature size is reached. 



Let the pupils endeavor to collect some young grasshop- 

 pers representing various stages of growth, and place these 

 in their collections beside the full-grown one. 



By searching in the grass, the cast-off skins of grasshop- 

 pers may be occasionally found still clinging to the spears of 

 grass, where they were left when the grasshoppers shed them. 



]T IG . 88. CAST-OFF SKIN OF A GRASSHOPPER. The grasshopper has shed its skin while 



clinging to a blade of grass. The skin is imperfect, the antennae and parts of its legs are 

 broken ; the abdomen is shriveled, and does not show. 



