14 The Structure and Habits of Spiders. 



other six or seven. The legs are seven-jointed; 

 and on the terminal joint are three claws, Fig. 

 2, A, B, C, and various hair and spines. In 

 many spiders a brush of hairs takes the place 

 of the middle claw, as in the jumping spiders, 

 Fig. 3. Spiders with these brushes on their 

 feet can walk up a steep surface, or under a 



Fig. 2. 



horizontal one, better than those who have 

 three claws. The legs of most spiders have 

 among the hairs movable spines, which, when 

 the spider is running about, extend outward 

 at a right angle with the leg, and, when it is 

 resting, are closed down against the skin. 



