CHAPTER IV. 



THE SPIDER. 



1. HoAV many body divisions? What may they be 

 called? 



2. How many legs? To what are they attached? 

 How many segments in each leg? Homologize the 

 parts with the segments of the leg of the grass- 

 hopper. If you find an extra segment, it may be called 

 patella. 



3. Which pair of legs is the longest? Examine 

 the foot. Draw. 



4. Find the eyes. How many? Draw. 



5. Find the mandibles, with their poison fangs. 

 Draw. 



6. Find the maxillse. See the palpi. If the 

 palpi are swollen, it indicates a male. Are there 

 antennse? 



7. At the tip of the abdomen, on the under side, 

 note the spinnerets. How many? Of what is each 

 composed? 



8. Near the base of the abdomen on the ventral 

 side of the female, find a hollow, curved tube, the 

 epigynum. Draw. 



9. Near the epigynum, find on each side an open- 

 ing into the breathing organs, which may be called 

 air gills, or lung sacs. 



THE DADDY IiO]!fGL,EGS. 



1. Identify the body divisions. 



2. Where are the eyes? How many? What kind? 



61 



