THE GRASSHOPPER. 3 



2. The remainder of the thorax is formed by the union 

 of two parts, each bearing a pair of legs, the part to 

 which the middle pair of legs is attached being the 

 mesothorax, the hinder legs arising from the meta- 

 thorax. Look for the line separating these two parts 

 of the thorax. 



3. Look just above the second pair of legs for a narrow 

 opening, guarded by a pair of lips, which, in the live 

 grasshopper, keep separating and coming together; 

 this is a breathing pore, or spiracle. Look for another 

 spiracle on the soft skin under the posterior edge of 

 the prothorax on each side. 



4. Carefully compare the prothorax, mesothorax, and 

 metathorax. 



THE WINGS. 



1. Notice the position of the outer wings, and their mode 

 of overlapping. 



2. With the forceps seize one of the outer wings by its 

 lower edge, near the anterior end, and draw it hori- 

 zontally forward, till it makes a right angle with the 

 body, and pin in this position. Seize the inner wing 

 by its lower edge near the posterior end, and pull 

 forward to its fullest extent, observing how it is 

 folded ; pin this wing as expanded, and make a draw- 

 ing of both wings as thus seen. Cut a piece of paper 

 the same size and shape as the inner wing, and fold 

 it as the inner wing is folded. 



3. The framework of the wings is composed of veins. 



4. Compare the inner and outer wings in : — 



a. Size. 



b. Shape. 



