The Structure and Habits of Spiders. 31 



genus Erigone, containing a great number of 

 the smallest spiders known. Fig. 13 is the 

 common house Theridion enlarged. 



Fig. 13. 



EPEIRID.E. 



The round-web spiders. Large spiders, with 

 flat heads, and eyes wide apart, and short, 

 round abdomens, Figs. I, 4. They make webs 

 formed of radiating lines crossed by other adhe- 

 sive ones in a spiral or concentric loops, Fig. 

 28. They hang in the web, head downward, 

 or live upside down in a hole near by. 



