THE LYCOSID.-E 7 1 



on the surface of the ground. The males (fig. 174) are half or 

 five-eighths of an inch long and spread two inches. They are 

 colored like the sand, — a little redder sometimes in the middle 

 spots and on the femora, and gray at the sides. There is a 

 spot in the middle of the abdomen edged with black and 



Fig. 172. Mouth of hole of Lycosa nidifex in sand, and footprints of the spider where 

 it ran out from the hole and back again. One-third the real size. 



a black band on each side of the head divided in front, the 

 branches extending to the lateral eyes of both rows. The 

 ends of the palpi and the spinnerets are black. The mandibles 

 are black, except in the middle, where they are covered with 

 bright yellow hairs. On the under side (fig. 175) the two front 

 pairs of legs, sternum, and mouth parts are black, the hinder 



