204 J. H. Emerton— Cobwebs of Uloborus. 
round as that of most Hpeiride, and is made in the same way 
by spinning a number of threads radiating from a center, cross- 
\ 
2. 
ing these with a loose spiral of the same kind of thread, and 
afterward beginning at the outside, crossing the rays again wit 
closer ieee gradually removing the first spiral of smooth 
ea 
thread, leaving only slight thickenings of the rays to show 
where it was attached. The principal difference between the 
webs is in the structure of the thread of the final spirals. In 
Epeira it is covered by a viscid liquid that collects on it 1 
drops. In rus it is covered by a band of fine threads 
drawn out by the calamistrum from the cribellum as descri 
in Hyptotes. 
