GRASSHOPPERS AND CRICKETS. 33 
Do you find the so-called ear-drum ‘tympanum, on 
the first segment «7 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 mz:e and female grasshoppers ? 
Sketch a side view cf a grasshopper’s abdomen xX :. 
The Thorax. What appendages are attached to the 
thorax 2? How many segments in the thorax ? 
How many leg: do vou find? Are they jointed ? 
How do they differ in size? Sketch one of the hind 
legs, indicating all the parts x <. 
How many wings do you see? Are any of the 
wings folded? How? Sketch a front and a hind 
wing fully extended ~ 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 vou find on the 
front of the head (antennz):’ Are they segmented ? 
What is their shape 7 How does their length compare 
with the length of the body? Sketch a side view of 
the head showing feelers. 
How many eves do you find? Compound eves 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 eve 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. 
