THE THERIDID^ 



127 



Spintharus flavidus. — A sixth to a quarter of an inch long. 



The cephalothorax is nearly circular, and the head small and 

 narrow like that of Argyrodes, with the hinder 

 middle eyes very far apart. The abdomen is 

 widest across the front third, where it is two- 

 thirds as wide as it is long, and from here it 

 tapers to a blunt point over the spinnerets 

 (fig. 302). On the back the abdomen is flat 

 and marked with white stripes each side, and 

 between them a large pattern in 

 black and red, lighter toward the 

 middle, where there are two or 

 three pairs of white spots. The 

 legs are slender like those of 

 Argyrodes, the first and fourth 

 pairs the same length and twice 

 as long as the second pair. The 

 tibiae of the first and second legs 

 are bright orange color, and the 

 rest, like the cephalothorax, pale 



yellow. The male has longer legs and more 



slender abdomen. They live on low plants, and 



the web is unknown. They have been found 



from Massachusetts to Alabama. 



Euryopis funebris. — A little dark-colored spider, 



with a flat abdomen pointed behind and bor- ^ 



dered with a silver-white stripe. It is almost 



an eighth of an inch long. The cephalothorax 



is small and as wide as it is long, with the sides 



rounded. The head is half as wide as the thorax, 



a little raised and extended forward over the mandibles (fig. 303). 



The front middle eyes are largest and are farther apart and 



farther forward than the others. The abdomen is flat and 



Fig. 302. Spintha- 

 rus flavidus, en- 

 larged four 

 times. 



Fig. 303. Euryopis 

 funebris, enlarged 

 four times. 



Fig. 304. Theridula 

 sphaerula, en- 

 larged four times. 



