THE EPEIRID^ 



187 



The legs are yellow, without rings or other markings. The 

 abdomen is yellow brown, darker toward the hinder end, with 

 white or light yellow stripes. The under side is the same 

 yellow-brown color, darker in the middle, with two narrow, 

 curved, light lines from 

 the spiracles to the spin- 

 nerets. The males are 

 marked in the same way 

 and have a smaller abdo- 

 men and longer spines 

 on the legs. 



Singa variabilis. — This 

 is a little smaller than 

 pratensis, usually about a 

 sixth of an inch long. 

 The legs and cephalo- 



thorax are bright orange Figs. 434,435, 435^. Male palpi of Zilla. — 434, Zilla 

 , ^_. r r . atrica. 435, Zilla x-notata. 435^, Zilla montana. 



color. The front of the 



head between the eyes is black. The abdomen is usually 

 entirely black, but occasionally has bright yellow markings 

 (fig. 436) arranged somewhat as in pratensis. Sometimes there 



is a wide middle stripe, with narrower 

 ones at the sides and two underneath. 

 Sometimes there are only the two lateral 

 stripes, and there are all variations 

 between these markings. The males 

 are colored in the same way and have 

 the same varieties. They are smaller than the males of 

 pratensis, but have the palpal organs as large or larger. 



Fig. 436. Markings of the 

 back of Singa variabilis. 



