Superfamily Argiopoidea 



observed, in very limited localities, and only in small numbers. 

 There is a little nook, a few minutes walk from my laboratory, 

 on the south bank of a deep ravine, where but little direct sun- 

 light falls, and where the air is kept moist by a near cataract. 

 Here, upon the low straggling branches of the American yew, 

 in the dense shade of tall hemlock trees, there is established a 



Fig. 241. MESHED HUB OF ULOBORUS AMERICANUS 



colony of Uloborus, which has persisted through several years. 

 By careful search one can find here, at the right season, perhaps 

 a score of webs. But nowhere else in the region about have I been 

 able to find this spider except occasionally an individual; and these 

 have been found in somewhat similar situations. 



Although most of the webs that I have studied were made 

 on the yew, it happens that those that I was able to photograph, 



267 



