78 INSECTA 



(7) The Legs. 



(a) Number of pairs? 



(b) Are they of the same size, or do they vary? 



(c) The segments in order, beginning at the body of the 



grasshopper, are: coxa, trochanter, femur, tibia, 

 tarsus of foot. Sketch one leg, much enlarged, 

 and name the parts present. 



(d) Compare first pair of legs with second pair, segment 



for segment, noting similarities and differences. 



(e) Compare second and third pairs. 



(8) The Wings. 



(a) Number? 



(b) Location? 



(c) Color above? 



(d) Color below? 



(e) Covering scaly, smooth, or hairy? 



(f) Anterior and posterior wings equal in size? 



(g) Anterior and posterior wings of same thickness? 

 (h) How folded when at rest? When in motion? 



(i) Wings analogous or homologous to the wings of a 

 bird? 



(j) Sketch the wings extended, putting in all the mark- 

 ings. 

 3. The Abdomen. 



(1) Shape? 



(2) Size compared with the thorax? 



(3) Covering? 



(4) Number of segments? 



(5) Ovipositor present or absent? 



(6) The Sting present or absent? 



(a) Why? 



(b) Why not found in all insects? 



(7) Tympana, on first abdominal segment of the grass- 



hopper. If your specimen is not a grasshopper, you 

 may have to look elsewhere for them. If you do not 

 find them, consult a large work on insects (Kellogg 

 or Comstock). 



(a) Size of tympana? 



(b) Number? 



