Superfamily Argiopoidea 



siderably greater than the horizontal, though sometimes it is 

 nearly circular, as is the one shown in Fig. 522. In the more typical 

 specimens about three fifths of the orb is below the centre of the 

 hub. The hub is meshed; and from the upper edge of it, one or 



two traplines lead to the lattice- 

 like retreat. There is a more 

 or less distinct free zone. In 

 the webs of full-grown spiders 

 the number of turns of the 

 viscid threads varies from ten to 



. . 1 m 



Fig. 519- 

 ARANEA THADDEUS 



Fig. 520- 

 EPIGYNUM OF ARANEA THADDEUS 



Fig 521. RETREAT OF ARANEA THADDEUS 



twenty-five above the hub and from forty to eighty below. 

 Usually the turns are much closer together below the hub than 

 above. 



Sometimes this spider builds an orb of the zilla type, the 



491 



