DRAGON-FLY: LABORATORY WORK. 



Which pair of wings are the larger? What is the 

 genera! arrangement of the veins in the wings ? Is the 

 head freely movable ? What is the size of the compound 

 eyes ? How many simple eyes do you find ? How would 

 you describe the antennae ? 



Are the mouth-parts fitted for biting ? Do they move 

 like those of a grasshopper? Do you find upper lip 

 (labrum) ? maxillae ? labium ? What is the character of 

 the mandibles ? Are they toothed ? Have any of the 

 mouth-parts palpi ? 



Do you find all three of the thoracic segments? Are 

 those present of equal size? Are they firmly united to 

 each other ? What is the relative size of the legs ? How 

 many joints in the foot ? 



How many segments do you find in the abdomen ? Are 

 any of them partially divided ? On what ones do you find 

 spiracles ? Are there appendages on any of the abdominal 

 segments ? 



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