I PRACTICAL ZOOLOGY. 



c. Color. 



d. Texture. 



e. Position, both when at rest and in motion. 

 /. Use. 



THE LEGS. 



1. Note their number, arrangement, and mode of attach- 

 ment. 



2. Study carefully one of the hind legs. 



a. A short segment near the body, the coxa. 



b. The big segment is the femur. 



. c. The slender segment is the tibia. 



d. The remainder is the foot, or tarsus; count its 

 segments, and examine thoroughly, using a lens. 

 Remove a hind leg, and make a drawing show- 

 ing all these parts. 



e. Examine the joint between the femur and tibia, 

 moving the parts back and forth. Note, also, 

 how these parts fit together when the leg is 

 drawn up. 



■f. In how many ways does the grasshopper travel? 



In what order are the legs moved in crawling ? 

 g. Grasshoppers make a shrill sound (stridulation) 

 by rubbing the inner surfaces of the hind legs 

 against the outer wings. 

 h. In what different ways does the grasshopper keep 

 from slipping when it jumps ? Remove the legs 

 and wings ; make drawings of the thorax as seen 

 from the side, from above, and from below. 



