THE LYCOSID^ 



87 



Dolomedes tenebrosus. — This is one of our largest spiders, 

 spreading its legs over four inches. The color is light and 

 dark gray. The legs are indistinctly marked with light and 



dark rings and have long 



dark spines (fig. 213). 

 The thorax is dark in the 

 middle and lighter toward 

 the eyes. On each side 

 are light bands that extend 

 around under the eyes and 

 meet in front. The abdo- 

 men has three pairs of 

 transverse dark stripes, 

 each with a light border 

 on the hinder edge. The 

 cephalothorax is four- 

 tenths of an inch long and 

 three-tenths wide, half as 

 wide in front, and nearly 

 straight on the front edge. 

 It is rounded in the mid- 

 dle, but not very high, 

 and just behind the eyes 

 is nearly flat. The under 

 side of the thorax and legs 

 is light colored, without 



markings, the abdomen a little darker. The abdomen is as 

 long as the thorax, widest across the middle, and a little pointed 

 behind. The male has longer legs and is more slender and 

 strongly marked ; under the fourth femora near the end is a 

 bunch of stiff hairs. The male palpi are long, with large tarsi 

 and palpal organs and a long hook on the outer side of the 

 tarsus. They live near water, on the ground or low bushes. 



Fig. 217. Xest of the young of Ocyale undata in 

 a wild-rose bush. One-third the real size. 



