GRASSHOPPERS AND CRICKETS . 33 
Do you find the so-called ear-drum (tympanum) on 
the first segment of the abdomen ? 
The female grasshopper has organs at the end of the 
abdomen for placing her eggs in the ground (oviposi¬ 
tors). 
Do you find both male and female grasshoppers ? 
Sketch a side view of a grasshopper’s abdomen X 5- 
The Thorax. What appendages are attached to the 
thorax ? How many segments in the thorax ? 
How many legs do you find ? Are they jointed ? 
How do they differ in size ? Sketch one of the hind 
legs, indicating all the parts X 5 - 
How many wings do you see ? Are any of the 
wings folded ? How ? Sketch a front and a hind 
wing fully extended X 5 - 
To what segments are the wings attached ? 
What can you say of the grasshopper’s powers of 
locomotion ? How many times its length can a grass¬ 
hopper jump ? Do the grasshoppers you have seen use 
their wings when they jump ? How do the wings of 
young grasshoppers compare with those of full-grown 
insects ? 
The Head. How many feelers do you find on the 
front of the head (antennae) ? Are they segmented ? 
What is their shape ? How does their length compare 
with the length of the body ? Sketch a side view of 
the head showing feelers. 
How many eyes do you find ? Compound eyes are 
made up of parts called facets. Small, simple eyes are 
called ocelli. How many compound eyes has the 
grasshopper ? How many ocelli ? Where are the 
eyes and ocelli situated ? Sketch a part of a com¬ 
pound eye as seen under a microscope. 
What is the shape of the upper lip (labrum) ? 
Sketch. 
Under this lip do you find hard jaws (mandibles) ? 
How many ? What color ? What shape ? In what 
direction do they move ? Sketch. 
