Superfamily Argiopoidea 



The spider waits for its prey in its retreat; as soon as an 

 insect alights or falls upon the sheet, the spider rushes forth to 

 seize it. 



(Photographed by Glenn W. Berrick) 

 Fig. 670. FUNNEL-LIKE WEB OF AGELENA N^EVIA 



The continued use of a web for several months, the spidei 

 spinning a drag-line in each of its trips over it, results in a constant 

 addition to the thickness of the sheet; but this addition is not 



590 



