INTRODUCTORY STUDIES OF LIVING ANIMALS ii 



2. Describe the outer surface or covering of the cater- 

 pillar. What structures, if any, are there, which might 

 make the animal distasteful or inedible ? 



3. How many pairs of legs are there ? How are they 

 distributed along the body ? Counting the segments, state 

 which ones bear no legs. 



4. To what extent do the legs act in locomotion ? Are 

 they mere organs for attachment while the body swings 

 forward and backward, or do the legs do this, as in a 

 horse .' Make a complete statement. 



5. Notice the openings of the internal breathing tubes. 

 How are they protected against dust and other foreign 

 matter ? 



6. Does the caterpillar seem to be a warm-blooded 

 animal .-' State how the free access of air along the body 

 would influence internal temperature. 



7. What do you know about a caterpillar's appetite ? 

 How might caterpillars be beneficial or harmful ? What 

 means has nature of holding their numbers in check .■■ 



8. Recalling that caterpillars finally "sleep " for several 

 days or weeks and awaken as winged creatures, how can you 

 account for their app.etites ? 



THE TUSSOCK MOTH 



Maierials. 



• 



Directions for the study of the caterpillar stage will be 

 found in the exercise " The Living Caterpillar," and 

 directions for the study of the adult male form will be 

 found in the exercise "The Living Butterfly or Moth." 

 The female tussock moth is a wingless, thick-bodied 

 ■ creature, gray in color, very downy, and about three 

 fourths of an inch long. The following directions apply 



