76 INSECTA 



(b) Number of segments to each palpus? 



(c) Motion? 



(d) Use? 



(13) The Labium, or Lower Lip. 



(a) Shape? 



(b) Color? 



(c) Size? 



(d) Motion? 



(e) Use? 



(14) The Labial Palpi. 



(a) Number on each side? 



(b) Number of segments to each palpus? 



(c) Motion? 



(d) Use? 



(15) Sketch front or side view of the head, much enlarged. 



Show all the parts you can. 



(16) Mouth-parts. Remove the mouth-parts from one side 



and sketch. 



(a) Mouth-parts adapted for (1) sucking or (2) biting? 



(b) Mouth-parts united into tube or free? 



(c) Why so many or so few parts, as the case may be? 

 2. The Thorax. 



(1) Shape? 



(2) Size compared with the head? 



(3) Size compared with the abdomen? 



(4) Number of spiracles? 



(5) Covering? 



(6) Divisions. In the grasshopper the thorax has three 



divisions. 



(a) The Prothorax or cape, as seen in the grasshopper, 



just back of the head. 



(1) Shape? 



(2) Color? 



(3) Number of appendages, as legs or wings? 



(4) Number of spiracles, if any? 



(b) The Mesothorax just posterior to the prothorax. 



Same questions as for prothorax. 



(c) The Metathorax. 



Same questions as for the prothorax. 



