94 



INSECT LIFE. 



get any, borrow one of some more successful collec- 

 tor. Do not touch the specimen itself, lest you break 

 it, but handle it by means of the pin with which it is 

 pinned. 



1. Observe the general appearance of the insect, 

 noting the large head, the slender neck, the stout 

 thorax, the broadly expanded wings, and the long, 

 slender abdomen. 



2. Study the head, noting its shape, the puffed out 

 front portion, the concave hinder side, and *the large 

 compound eyes. 



3. Examine the compound eyes with a lens or 

 microscope, and make a drawing illustrating the struc- 

 ture of the surface ; only a small portion of one eye 

 need be represented, but show this greatly enlarged. 

 State the proportion of the surface of the head occu- 

 pied by the compound eyes. 



4. Find the simple eyes, using a lens for this pur- 

 pose ; they are situated in the triangular space be- 

 tween the compound eyes and the puffed out front 

 portion of the head. How many of them are there? 



5. Observe the antennas ; these are very small, 

 and are situated in the same triangular space as the 

 simple eyes. Each antenna consists of a stouter 

 basal part and a slender, bristlelike part composed of 

 several segments. Make a drawing of one antenna 

 greatly enlarged. 



6. Make a drawing of the head seen from above, 

 representing each of the parts already mentioned. 

 Make the drawing large enough so that the simple 

 eyes and antennae can be well shown. 



7. Study the lower side of the head and make a 

 drawing of the mouth-parts that can be seen without 



