10 PRACTICAL ZOOLOGY. 



veins of the other wing, the cricket makes its chirping 

 noise. Watch crickets to see how the wings are man- 

 aged during this process. 



6. With a lens look for the so-called hearing organ on 

 the tibia of the fore leg. 



7. Make a drawing showing all that can be seen from 

 above (dorsal view), and naming all the parts shown. 



Grasshoppers and crickets both belong to the order of 

 insects called Orthoptera, or straight-winged insects. 



THE BUMBLE BEE. 



1. Find three ocelli on the top of the head. How are 

 they arranged? 



2. Describe the antennae. 



3. The mouth parts : — 



a. A pair of true jaws. 



b. The long, hairy tongue. 



c. Above the tongue the two blades of the maxillae. 



d. Below the tongue the thin, narrow labial palpi. 



The last three form a proboscis ; pick the parts asunder, 

 and make a drawing of the front of the head, showing all 

 these parts. 



4. How does the bee take its food ? Is the honey stored 

 by the bee the same as when taken from the flower ? 



5. Compare the segments of the legs with those of the 

 grasshopper. How does the bee get pollen ? What 

 does the bee do with the pollen ? 



