THE 8PIDER AND ITS ALLIES 



89 



(1) Crab spiders (Laterigradse *) are so called because 

 they run sideways. They make nests by fastening together 

 leaves by threads of silk. Their young are reared in these 

 nests, and watched over by the mother (Fig. 88). 



('2) Running spiders (Citigradre 2 ). - These are for the 

 most part large and powerful species which wander over 



FIG. 86. Web of a tube-weaver; looking down upon the web, which is in a 

 corner between two vertical walls. The tube is in the angle. Photo, by 

 W. H. C. P. 



fields or along watercourses in search of prey. Our 

 Northern species belong chiefly to the genus Lycosa 3 (Fig. 

 89). They live in holes in the ground, making a ring of 

 silk at the orifice. The female carries her eggs about in 

 a special cocoon attached to the end of the abdomen. The 



j side ; gradus, locomotion. 2 citus, rapid, + yradus. 



3 Xtkoj, wolf. 



