CHAPTER III. 



THE BUTTERFLY. 



Any butterfly will do for this study, but the large, 

 brownish red butterfly with black wing veins (Anosia 

 plexippus) is a good one. 



1. Find the body divisions. 



2. On the head, find the eyes, labial palpi, an- 

 tennae, and sucking tube. To what organs on the 

 grasshopper does the sucking tube correspond? 

 Are there any other mouth parts? Are there 

 ocelli? 



3. Study the legs. Are all alike? Identify all 

 the parts. Of what use are the legs? 



4. Study the wings. To what is each attached? 

 How are they held when at rest? Which side of 

 the wing is exposed to view when the butterfly is 

 resting? 



5. Scrape some dust off the wings. This dust 

 consists of scales which cover the wings and the body. 

 Examine a piece of the wing with your lens. The 

 scales may be seen overlapping each other like the 

 shingles on a roof. 



6. At the base of the fore wing, find an appendage 

 covered with scales or hair. This is the patagium, or 

 shoulder lapper. 



7. Make a drawing of the veins of the wing. The 

 central cell, from which several veins seem to start, is 

 called the discal cell. 



8. How many segments in the abdomen? Are 

 there spiracles? How many? 



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