CHAPTER I. 



THE GRASSHOPPER, 



1. Distinguish the head, thorax, and abdomen. 

 These are called the body divisions. 



The Head. 



2. Find the antennae. How many segments in 

 each? 



3. Find the compound eyes. Your lens will show 

 only some fine lines running criss-cross over the sur- 

 face. 



4. Find three simple eyes (ocelli) on the head. 



5. See the upper lip (labrum). Raise it. Cut it 

 off. Examine the under side. Draw. 



6. See the mandibles, or true jaws. Pry them 

 apart. In what direction do they move? Pull one 

 off. Examine. Draw. 



7. Below the mouth is the labium, or lower lip. Is 

 it a single appendage, or two united? 



8. Find the labial palpi, attached to the labium. 

 How many segments in each? 



9. Find the maxillse. These consist of three 

 pieces each : — 



(a) Maxillary palpus. How many segments? 

 (6) A spoon shaped piece, the galea.' 

 (c) The lacinia, or maxilla proper. How many 

 points has it? 



10. Draw the head, as seen from the side. As seen 

 from the front. 



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