SPIDERS. 117 



There are other kinds of webs which other kinds of spiders 

 spin. Indeed, among the orb- weavers alone, there is great variety 

 in the character of the webs; some orb-webs for example, lack a 

 sector of the circle, the web being otherwise constructed 

 on the regular orb-web plan; others are composed of perhaps less 

 than one-half a circle, although still with radii, and with con- 

 centric arcs of circles in place of complete circles in the spiral 

 zone. Certain kinds of spiders spin a peculiar broad line or 

 rather band of curling silk, which leads from the snare to the 



Fig. 74. The triangle spider (Hyptiotes) and its snare. 



side retreat of the spider. Or they make out of this band of 

 curled silk a central zone not composed of a spiral line but of a 

 closed oval or circular shield. A certain very small spider 

 spins a triangular web (fig. 74), from which a main stay line runs 

 upon which the spider triangle spider it is called rests with a 

 loop of the stay line held between the fore and hind legs. When 

 an insect alights upon the snare the spider looses the hold of the 



